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Reykjanes / Svartsengi

Seismicity by period · derived statistics from Skjálftalísa (Icelandic Met Office)
Status (automatic)
Over the last 24 hours, only 1 earthquake was detected in the Reykjanes and Svartsengi volcanic system, indicating that activity is decreasing and is currently below the weekly rate. This seismic activity is within what is considered normal for this area, consisting mostly of scattered background activity rather than swarms, and most closely resembles the period around December 30, 2025. The largest earthquake in the last 48 hours was magnitude M-0.2, with a cumulative moment magnitude of Mw -0.2 over the same period. Please note that these are automatic preliminary results with unreliable depths, but further details on ground deformation and trends can be found in the reports below. (status from 2026-07-22 00:00 UTC)
VONA (Reykjanes): Yellow (unchanged since 2025-08-05) · source
VONA = Volcano Observatory Notice for Aviation; the official Met Office colour code for aviation. Independent of Skjálfti's automatic analysis.
Depth — 3D and cross-section Reykjanes Peninsula · last 90 days
Each dot is an earthquake, depth as the third dimension — Reykjanes Peninsula, last 90 days. Drag the 3D view to rotate; point at a dot for details.
3D (rotatable) · depth ×2.5
Cross-section — distance along profile (km) vs depth (km)
Map (top view)
<24 klst2–7 dolderunconstrained depthsize ∝ magnitude (M)
⚠ Preliminary depths, unreliable (automatic Met Office solutions; depth often poorly constrained). events with unconstrained (default) depth shown as open rings — not real structure. For illustration, not analysis.
🕰️ Last eruption / event — 12 months ago
Eruption 9 at Sundhnúkur fissure (2025-07-16). Part of the active period since Dec 2023 (9 dike intrusions, 7 surfaced). Current cycle is the longest — uplift now exceeds 5× the median of previous cycles.
Fissure system at the western tip of the Reykjanes Peninsula. Svartsengi/Sundhnúkur has erupted repeatedly since December 2023 with magma dike intrusions by Grindavík (basaltic fissure eruptions). Intense seismicity and uplift. (overview — more at vedur.is) · circle on the map = rough outline of the system (radius).
📜 Did you know?
Since December 2023, nine dike intrusions have occurred at Sundhnúkur, seven reaching the surface. This is the first active period on Reykjanes in about 800 years — the last comparable was the Reykjaneseldar of 1210-1240.
Historical eruptions in the system — points colored by size, blue circle shows where we are now in time.
Sundhnúksgosa-cycle201920202021202220232024202520262027202820292030G4G5G6G7G9nowsmallmediumlarge
❓ What if another eruption starts at Sundhnúkur?
Timeline: Likely 30 minutes to hours between first seismic precursors (M3+ swarm) and surface eruption. Seven of nine recent dike intrusions reached the surface as eruptions. Impact: Lava front advances at 1-20 m/h in worst phases (Sundhnúkur eruptions recorded front speeds of 0.3-1.5 m/s right after onset), can reach the sea. The town has been evacuated multiple times — renewed evacuation likely. Blue Lagoon and Svartsengi power plant are at risk (partial protective berm already built). Reykjanes road (highway to Keflavík airport) probably stays open, depending on eruption location. Sulphur dioxide (SO₂) from new vent affects Reykjavík air quality when wind is northerly. Sources: Experience from 7 prior eruptions (2023-2025), Met Office hazard maps.
This is not a forecast. Based on historical experience and official hazard assessments from the Met Office / Civil Protection.
☁ Air quality — SO₂
Real-time SO₂ from Environment Agency (2026-07-26T19:00 UTC). Yellow > 20 µg/m³, orange > 125 (health threshold), red > 350. Nearest stations to this system; past 24h shown for the highest.
Grindavík11.2 µg/m³
Vogar4.9 µg/m³
Sandgerði4.3 µg/m³
Ásbrú (Keflavík)2.7 µg/m³
Keflavík (Vatnaveröld)2.6 µg/m³
2020:0000:0004:0008:0012:0016:00
Points = earthquake locations in the selected window, coloured by magnitude: M3+ · M2+ · smaller (a sample if more than 800).
Earthquakes
3
Largest
M1.2
M3,0+
0
Depth range
0–5 km
Earthquakes over time
119:5000:3805:2610:1415:0219:50
Cumulative count · 3 earthquakes · total moment ≈ M1.2 · count moment
n=30M1.2019:5000:3805:2610:1415:0219:50
Depth (0 km at top). Grey: fixed depth.
0km2km5km19:5000:3805:2610:1415:0219:50
Magnitude distribution
2<111–202–303–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km2km5km22.70°W22.67°W22.64°W22.61°W22.58°WE-W
0km2km5km63.80°N63.82°N63.83°N63.85°N63.87°NN-S
Earthquakes
10
Largest
M1.8
M3,0+
0
Depth range
0–8 km
Earthquakes over time
224.0725.0725.0726.0726.0726.07
Cumulative count · 10 earthquakes · total moment ≈ M1.9 · count moment
n=100M1.9024.0725.0725.0726.0726.0726.07
Depth (0 km at top). Grey: fixed depth.
0km4km8km24.0725.0725.0726.0726.0726.07
Magnitude distribution
8<121–202–303–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km4km8km22.71°W22.66°W22.60°W22.54°W22.49°WE-W
0km4km8km63.80°N63.82°N63.84°N63.85°N63.87°NN-S
Earthquakes
16
Largest
M1.8
M3,0+
0
Depth range
0–8 km
Earthquakes over time
319.0721.0722.0724.0725.0726.07
Cumulative count · 16 earthquakes · total moment ≈ M1.9 · count moment
n=160M1.9019.0721.0722.0724.0725.0726.07
Depth (0 km at top). Grey: fixed depth.
0km4km8km19.0721.0722.0724.0725.0726.07
Magnitude distribution
14<121–202–303–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km4km8km22.71°W22.64°W22.56°W22.49°W22.42°WE-W
0km4km8km63.79°N63.81°N63.83°N63.85°N63.87°NN-S
Earthquakes
54
Largest
M2.1
M3,0+
0
Depth range
0–20 km
Earthquakes over time
526.0602.0708.0714.0720.0726.07
Cumulative count · 54 earthquakes · total moment ≈ M2.3 · count moment
n=540M2.3026.0602.0708.0714.0720.0726.07
Depth (0 km at top). Grey: fixed depth.
0km10km20km26.0602.0708.0714.0720.0726.07
Magnitude distribution
49<141–212–303–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km10km20km22.71°W22.63°W22.54°W22.46°W22.38°WE-W
0km10km20km63.79°N63.82°N63.85°N63.88°N63.91°NN-S
Earthquakes
638
Largest
M3.1
M3,0+
1
Depth range
0–26 km
Earthquakes over time
13026.0707.1019.1202.0314.0526.07
Cumulative count · 638 earthquakes · total moment ≈ M3.2 · count moment
n=6380M3.2026.0707.1019.1202.0314.0526.07
Depth (0 km at top). Grey: fixed depth.
0km13km26km26.0707.1019.1202.0314.0526.07
Magnitude distribution
466<1461–242–313–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km13km26km22.72°W22.63°W22.55°W22.46°W22.37°WE-W
0km13km26km63.79°N63.83°N63.88°N63.92°N63.97°NN-S
Note: before February 2026 about half of events lacked an automatic magnitude, so magnitude-dependent figures (b-value, count of M≥X) under-count earlier periods — the catalogue is not homogeneous across this window. Cumulative moment is barely affected.
Earthquakes
5019
Largest
M3.6
M3,0+
7
Depth range
0–26 km
Earthquakes over time
89626.0719.1214.0507.1002.0326.07
Cumulative count · 5019 earthquakes · total moment ≈ M4.1 · count moment
n=50190M4.1026.0719.1214.0507.1002.0326.07
Depth (0 km at top). Grey: fixed depth.
0km10km19km26.0719.1214.0507.1002.0326.07
Magnitude distribution
2066<13771–2732–373–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km6km12km22.72°W22.63°W22.54°W22.46°W22.37°WE-W
0km6km12km63.79°N63.84°N63.89°N63.94°N63.99°NN-S
Gutenberg-Richter b ≈ 0.89 ± 0.06 (i.e. likely 0.83–0.95, M≥1.7, n=141)
Note: before February 2026 about half of events lacked an automatic magnitude, so magnitude-dependent figures (b-value, count of M≥X) under-count earlier periods — the catalogue is not homogeneous across this window. Cumulative moment is barely affected.

Depth is automatic and uncertain; earthquakes alone do not show magma movement — deformation (GPS) and gas are needed. Grey points: automatic fixed-depth values. b-value computed for M≥1.5 (automatic magnitudes make lower completeness unreliable). Preliminary data.

Glossary & magnitude scale →

Uplift — GNSS deformation

SENG — rapid, step-like deformation (eruption cycles); not a steady annual rate — see chart
-0mm+0mm+874mm26.0701.1007.1213.0221.0427.06
REYK (Reykjavík) — reference ~-2 mm/yr
-21mm+0mm+31mm26.0701.1007.1213.0221.0427.06
Show all stations (N/E/Up + cluster)
SENG — horizontal and vertical displacement (N · E · Up) past 365 d, mm from first reading
-0mm+55mm+110mmN+0mm+24mm+48mmE-0mm+437mm+874mmUp26.07.2501.10.2507.12.2513.02.2621.04.2627.06.26
Þorbjörn/Svartsengi cluster — Up comparison past 365 d, mm from each station's first reading
-6mm+0mm+874mmHS02NBIOORFCSENGSKSH26.07.2501.10.2507.12.2513.02.2621.04.2627.06.26
Advanced uplift analysis (cycle, baseline, Mogi)
Since Gos 9 (2025-07-16): 375 days · +862 mm uplift · +0.7 mm/dag rate — 558% of median prior cycle. Current cycle (orange) overlaid on prior 8 dike-intrusion cycles (grey). 9 dike intrusions since Dec 2023, of which 7 reached the surface as eruptions.
-782mm-11mm+760mmmedian peak of prior cycles (154 mm)0d20d40d60d80d100d120d
Horizontal baseline lengths between SENG and 4 nearest stations past 365 d — mm from first common day. Horizontal only (e,n) to avoid vertical paradox. Increase = stations moving apart = radial outward inflation; decrease = subsidence or contraction. Common-mode filter: atm/geomag noise cancels.
-70mm+74mm+217mmSENG↔HS02SENG↔NBIOSENG↔ORFCSENG↔SKSH26.07.2520.09.2515.11.2510.01.2607.03.2602.05.26
Mogi ΔV(t) — fixed Svartsengi chamber (63.889°N, -22.461°W, depth 4.5 km — Sigmundsson et al. 2024). Past 30-d mean: +1.30 Mm³/30d. Latest day (2026-05-28): +0.73 Mm³ (rms 3.4 mm). Green = good fit (<10 mm), yellow medium, grey poor. Assumptions: point-Mogi, ν=0.25, fixed depth 4.5 km (Sigmundsson et al. 2024). Interpretation: the chamber refills by ~1 cubic megameter (≈1 million m³) per month on average. Sill geometry / shallower depth (Hreinsdóttir 2025) would give ~30% higher ΔV — lower bounds.
-16.6+2.1+20.7Mm³/30d2025-08-01 ΔV=-14.91 Mm³ rms=52.3 mm2025-08-02 ΔV=-14.73 Mm³ rms=53.2 mm2025-08-03 ΔV=-14.58 Mm³ rms=53.1 mm2025-08-04 ΔV=-14.79 Mm³ rms=54.0 mm2025-08-05 ΔV=-14.25 Mm³ rms=54.3 mm2025-08-06 ΔV=-15.06 Mm³ rms=54.3 mm2025-08-07 ΔV=-13.98 Mm³ rms=54.6 mm2025-08-08 ΔV=-14.48 Mm³ rms=54.7 mm2025-08-09 ΔV=-14.77 Mm³ rms=54.7 mm2025-08-10 ΔV=-2.34 Mm³ rms=135.1 mm2025-08-11 ΔV=-14.96 Mm³ rms=53.4 mm2025-08-12 ΔV=-3.09 Mm³ rms=132.1 mm2025-08-13 ΔV=-14.27 Mm³ rms=51.9 mm2025-08-14 ΔV=-13.54 Mm³ rms=51.3 mm2025-08-15 ΔV=+2.41 Mm³ rms=9.5 mm2025-08-16 ΔV=+5.16 Mm³ rms=19.9 mm2025-08-17 ΔV=+4.79 Mm³ rms=21.2 mm2025-08-18 ΔV=+5.22 Mm³ rms=20.3 mm2025-08-19 ΔV=+17.37 Mm³ rms=117.0 mm2025-08-20 ΔV=+17.19 Mm³ rms=117.5 mm2025-08-21 ΔV=+17.79 Mm³ rms=118.3 mm2025-08-22 ΔV=+17.54 Mm³ rms=117.6 mm2025-08-23 ΔV=+17.89 Mm³ rms=118.0 mm2025-08-24 ΔV=+17.78 Mm³ rms=118.8 mm2025-08-25 ΔV=+17.33 Mm³ rms=117.5 mm2025-08-26 ΔV=+18.46 Mm³ rms=117.7 mm2025-08-27 ΔV=+18.79 Mm³ rms=118.4 mm2025-08-28 ΔV=+18.86 Mm³ rms=118.5 mm2025-08-29 ΔV=+18.36 Mm³ rms=118.7 mm2025-08-30 ΔV=+18.70 Mm³ rms=119.4 mm2025-08-31 ΔV=+18.58 Mm³ rms=118.6 mm2025-09-01 ΔV=+18.17 Mm³ rms=118.4 mm2025-09-02 ΔV=+18.73 Mm³ rms=119.5 mm2025-09-03 ΔV=+18.69 Mm³ rms=119.4 mm2025-09-04 ΔV=+18.51 Mm³ rms=120.0 mm2025-09-05 ΔV=+18.42 Mm³ rms=119.5 mm2025-09-06 ΔV=+18.18 Mm³ rms=118.6 mm2025-09-07 ΔV=+17.95 Mm³ rms=119.1 mm2025-09-08 ΔV=+18.07 Mm³ rms=120.1 mm2025-09-09 ΔV=+6.02 Mm³ rms=25.0 mm2025-09-10 ΔV=+18.60 Mm³ rms=117.9 mm2025-09-11 ΔV=+6.02 Mm³ rms=22.2 mm2025-09-12 ΔV=+18.16 Mm³ rms=118.9 mm2025-09-13 ΔV=+17.90 Mm³ rms=118.9 mm2025-09-14 ΔV=+18.16 Mm³ rms=119.1 mm2025-09-15 ΔV=+17.99 Mm³ rms=117.2 mm2025-09-16 ΔV=+18.17 Mm³ rms=118.9 mm2025-09-17 ΔV=+17.57 Mm³ rms=118.3 mm2025-09-18 ΔV=+5.75 Mm³ rms=20.9 mm2025-09-19 ΔV=+5.70 Mm³ rms=19.6 mm2025-09-20 ΔV=+5.50 Mm³ rms=21.2 mm2025-09-21 ΔV=+6.36 Mm³ rms=21.7 mm2025-09-22 ΔV=+6.52 Mm³ rms=21.1 mm2025-09-23 ΔV=+5.44 Mm³ rms=22.1 mm2025-09-24 ΔV=+6.10 Mm³ rms=23.6 mm2025-09-25 ΔV=+5.57 Mm³ rms=19.9 mm2025-09-26 ΔV=+5.39 Mm³ rms=21.6 mm2025-09-27 ΔV=+5.01 Mm³ rms=20.3 mm2025-09-28 ΔV=+5.64 Mm³ rms=19.7 mm2025-09-29 ΔV=+5.17 Mm³ rms=17.9 mm2025-09-30 ΔV=+5.35 Mm³ rms=20.1 mm2025-10-01 ΔV=+5.13 Mm³ rms=18.1 mm2025-10-02 ΔV=+4.61 Mm³ rms=18.7 mm2025-10-03 ΔV=+5.64 Mm³ rms=19.3 mm2025-10-04 ΔV=+4.88 Mm³ rms=19.0 mm2025-10-05 ΔV=+5.23 Mm³ rms=19.8 mm2025-10-06 ΔV=+4.49 Mm³ rms=18.6 mm2025-10-07 ΔV=+5.50 Mm³ rms=21.0 mm2025-10-08 ΔV=+5.80 Mm³ rms=17.9 mm2025-10-09 ΔV=+4.91 Mm³ rms=19.2 mm2025-10-10 ΔV=+4.80 Mm³ rms=18.5 mm2025-10-11 ΔV=+3.97 Mm³ rms=18.1 mm2025-10-12 ΔV=+4.81 Mm³ rms=18.5 mm2025-10-13 ΔV=+3.48 Mm³ rms=17.9 mm2025-10-14 ΔV=+4.10 Mm³ rms=17.4 mm2025-10-15 ΔV=+3.97 Mm³ rms=17.8 mm2025-10-16 ΔV=+3.97 Mm³ rms=17.2 mm2025-10-17 ΔV=+4.51 Mm³ rms=16.0 mm2025-10-18 ΔV=+4.15 Mm³ rms=17.2 mm2025-10-19 ΔV=+4.14 Mm³ rms=15.9 mm2025-10-20 ΔV=+3.93 Mm³ rms=15.5 mm2025-10-21 ΔV=+4.41 Mm³ rms=17.3 mm2025-10-22 ΔV=+3.67 Mm³ rms=16.4 mm2025-10-23 ΔV=+4.12 Mm³ rms=15.3 mm2025-10-24 ΔV=+3.31 Mm³ rms=13.7 mm2025-10-25 ΔV=+3.49 Mm³ rms=15.6 mm2025-10-26 ΔV=+3.34 Mm³ rms=14.1 mm2025-10-27 ΔV=+3.80 Mm³ rms=16.4 mm2025-10-28 ΔV=+4.98 Mm³ rms=21.8 mm2025-10-29 ΔV=+3.41 Mm³ rms=17.9 mm2025-10-30 ΔV=+3.67 Mm³ rms=15.1 mm2025-10-31 ΔV=+2.91 Mm³ rms=16.2 mm2025-11-01 ΔV=+4.21 Mm³ rms=14.0 mm2025-11-02 ΔV=+2.86 Mm³ rms=12.7 mm2025-11-03 ΔV=+3.03 Mm³ rms=12.3 mm2025-11-04 ΔV=+3.75 Mm³ rms=13.7 mm2025-11-05 ΔV=+3.15 Mm³ rms=11.4 mm2025-11-06 ΔV=+2.83 Mm³ rms=10.6 mm2025-11-07 ΔV=+2.31 Mm³ rms=12.3 mm2025-11-08 ΔV=+2.45 Mm³ rms=12.5 mm2025-11-09 ΔV=+2.87 Mm³ rms=12.3 mm2025-11-10 ΔV=+4.18 Mm³ rms=14.4 mm2025-11-11 ΔV=+2.35 Mm³ rms=15.2 mm2025-11-12 ΔV=+2.26 Mm³ rms=11.3 mm2025-11-13 ΔV=+2.01 Mm³ rms=10.3 mm2025-11-14 ΔV=+3.41 Mm³ rms=11.5 mm2025-11-15 ΔV=+2.77 Mm³ rms=12.1 mm2025-11-16 ΔV=+2.62 Mm³ rms=14.7 mm2025-11-17 ΔV=+2.44 Mm³ rms=13.1 mm2025-11-18 ΔV=+2.89 Mm³ rms=14.1 mm2025-11-19 ΔV=+2.72 Mm³ rms=15.2 mm2025-11-20 ΔV=+2.74 Mm³ rms=13.5 mm2025-11-21 ΔV=+2.63 Mm³ rms=12.3 mm2025-11-22 ΔV=+3.11 Mm³ rms=13.4 mm2025-11-23 ΔV=+3.34 Mm³ rms=14.5 mm2025-11-24 ΔV=+2.60 Mm³ rms=14.4 mm2025-11-25 ΔV=+2.38 Mm³ rms=14.1 mm2025-11-26 ΔV=+2.79 Mm³ rms=12.2 mm2025-11-27 ΔV=+2.26 Mm³ rms=18.9 mm2025-11-28 ΔV=+3.49 Mm³ rms=16.4 mm2025-11-29 ΔV=+3.00 Mm³ rms=14.7 mm2025-11-30 ΔV=+2.38 Mm³ rms=11.9 mm2025-12-01 ΔV=+2.19 Mm³ rms=13.1 mm2025-12-02 ΔV=+2.55 Mm³ rms=14.8 mm2025-12-03 ΔV=+2.93 Mm³ rms=15.0 mm2025-12-04 ΔV=+1.70 Mm³ rms=13.3 mm2025-12-05 ΔV=+2.61 Mm³ rms=15.1 mm2025-12-06 ΔV=+2.58 Mm³ rms=14.5 mm2025-12-07 ΔV=+3.00 Mm³ rms=14.0 mm2025-12-08 ΔV=+3.18 Mm³ rms=15.0 mm2025-12-09 ΔV=+2.75 Mm³ rms=14.1 mm2025-12-10 ΔV=+2.54 Mm³ rms=13.5 mm2025-12-11 ΔV=+3.80 Mm³ rms=15.4 mm2025-12-12 ΔV=+4.85 Mm³ rms=16.9 mm2025-12-13 ΔV=+3.28 Mm³ rms=15.0 mm2025-12-14 ΔV=+2.89 Mm³ rms=14.1 mm2025-12-15 ΔV=+3.32 Mm³ rms=12.7 mm2025-12-16 ΔV=+3.06 Mm³ rms=10.6 mm2025-12-17 ΔV=+4.33 Mm³ rms=12.3 mm2025-12-18 ΔV=+3.63 Mm³ rms=11.1 mm2025-12-19 ΔV=+3.52 Mm³ rms=11.0 mm2025-12-20 ΔV=+2.75 Mm³ rms=8.9 mm2025-12-21 ΔV=+2.99 Mm³ rms=9.7 mm2025-12-22 ΔV=+2.69 Mm³ rms=9.5 mm2025-12-23 ΔV=+2.66 Mm³ rms=8.6 mm2025-12-24 ΔV=+3.07 Mm³ rms=8.0 mm2025-12-25 ΔV=+2.65 Mm³ rms=8.4 mm2025-12-26 ΔV=+2.57 Mm³ rms=8.1 mm2025-12-27 ΔV=+1.39 Mm³ rms=6.2 mm2025-12-28 ΔV=+1.03 Mm³ rms=8.0 mm2025-12-29 ΔV=+1.68 Mm³ rms=8.3 mm2025-12-30 ΔV=+1.94 Mm³ rms=9.1 mm2025-12-31 ΔV=+1.60 Mm³ rms=9.3 mm2026-01-01 ΔV=+2.24 Mm³ rms=8.1 mm2026-01-02 ΔV=+2.81 Mm³ rms=8.9 mm2026-01-03 ΔV=+2.44 Mm³ rms=7.7 mm2026-01-04 ΔV=+2.31 Mm³ rms=7.8 mm2026-01-05 ΔV=+2.38 Mm³ rms=6.5 mm2026-01-06 ΔV=+2.55 Mm³ rms=9.1 mm2026-01-07 ΔV=+2.51 Mm³ rms=7.2 mm2026-01-08 ΔV=+2.23 Mm³ rms=8.4 mm2026-01-09 ΔV=+2.26 Mm³ rms=8.8 mm2026-01-10 ΔV=+1.39 Mm³ rms=8.1 mm2026-01-11 ΔV=+2.08 Mm³ rms=10.6 mm2026-01-12 ΔV=+2.68 Mm³ rms=8.9 mm2026-01-13 ΔV=+2.25 Mm³ rms=7.9 mm2026-01-14 ΔV=+2.50 Mm³ rms=9.2 mm2026-01-15 ΔV=+2.38 Mm³ rms=8.8 mm2026-01-16 ΔV=+1.22 Mm³ rms=7.5 mm2026-01-17 ΔV=+1.83 Mm³ rms=8.4 mm2026-01-18 ΔV=+2.58 Mm³ rms=8.9 mm2026-01-19 ΔV=+2.79 Mm³ rms=8.9 mm2026-01-20 ΔV=+2.62 Mm³ rms=9.2 mm2026-01-21 ΔV=+3.07 Mm³ rms=9.6 mm2026-01-22 ΔV=+2.64 Mm³ rms=8.1 mm2026-01-23 ΔV=+2.65 Mm³ rms=9.3 mm2026-01-24 ΔV=+2.63 Mm³ rms=7.9 mm2026-01-25 ΔV=+2.50 Mm³ rms=9.0 mm2026-01-26 ΔV=+2.84 Mm³ rms=9.1 mm2026-01-27 ΔV=+3.32 Mm³ rms=9.0 mm2026-01-28 ΔV=+3.06 Mm³ rms=8.3 mm2026-01-29 ΔV=+3.13 Mm³ rms=8.3 mm2026-01-30 ΔV=+2.60 Mm³ rms=7.9 mm2026-01-31 ΔV=+2.41 Mm³ rms=7.4 mm2026-02-01 ΔV=+2.04 Mm³ rms=7.7 mm2026-02-02 ΔV=+2.11 Mm³ rms=7.8 mm2026-02-03 ΔV=+1.83 Mm³ rms=8.1 mm2026-02-04 ΔV=+2.27 Mm³ rms=7.5 mm2026-02-05 ΔV=+1.54 Mm³ rms=7.1 mm2026-02-06 ΔV=+1.52 Mm³ rms=8.1 mm2026-02-07 ΔV=+1.82 Mm³ rms=7.0 mm2026-02-08 ΔV=+1.38 Mm³ rms=6.3 mm2026-02-09 ΔV=+1.66 Mm³ rms=6.5 mm2026-02-10 ΔV=+1.03 Mm³ rms=5.0 mm2026-02-11 ΔV=+1.00 Mm³ rms=6.4 mm2026-02-12 ΔV=+1.21 Mm³ rms=6.3 mm2026-02-13 ΔV=+0.68 Mm³ rms=5.7 mm2026-02-14 ΔV=+1.00 Mm³ rms=5.8 mm2026-02-15 ΔV=+1.35 Mm³ rms=7.0 mm2026-02-16 ΔV=+2.21 Mm³ rms=7.2 mm2026-02-17 ΔV=+1.63 Mm³ rms=7.2 mm2026-02-18 ΔV=+1.69 Mm³ rms=6.7 mm2026-02-19 ΔV=+1.49 Mm³ rms=6.3 mm2026-02-20 ΔV=+1.32 Mm³ rms=6.1 mm2026-02-21 ΔV=+1.81 Mm³ rms=5.5 mm2026-02-22 ΔV=+1.53 Mm³ rms=7.5 mm2026-02-23 ΔV=+1.57 Mm³ rms=8.0 mm2026-02-24 ΔV=+1.59 Mm³ rms=7.1 mm2026-02-25 ΔV=+1.74 Mm³ rms=8.9 mm2026-02-26 ΔV=+1.58 Mm³ rms=7.4 mm2026-02-27 ΔV=+1.18 Mm³ rms=5.7 mm2026-02-28 ΔV=+1.18 Mm³ rms=5.8 mm2026-03-01 ΔV=+2.31 Mm³ rms=8.9 mm2026-03-02 ΔV=+1.59 Mm³ rms=6.3 mm2026-03-03 ΔV=+1.42 Mm³ rms=6.9 mm2026-03-04 ΔV=+1.88 Mm³ rms=7.6 mm2026-03-05 ΔV=+2.29 Mm³ rms=6.7 mm2026-03-06 ΔV=+2.62 Mm³ rms=9.6 mm2026-03-07 ΔV=+2.04 Mm³ rms=7.5 mm2026-03-08 ΔV=+1.18 Mm³ rms=6.6 mm2026-03-09 ΔV=+2.18 Mm³ rms=7.1 mm2026-03-10 ΔV=+1.83 Mm³ rms=6.9 mm2026-03-11 ΔV=+2.46 Mm³ rms=8.0 mm2026-03-12 ΔV=+2.44 Mm³ rms=8.4 mm2026-03-13 ΔV=+1.87 Mm³ rms=8.0 mm2026-03-14 ΔV=+2.28 Mm³ rms=10.4 mm2026-03-15 ΔV=+2.29 Mm³ rms=8.5 mm2026-03-16 ΔV=+2.22 Mm³ rms=8.8 mm2026-03-17 ΔV=+2.41 Mm³ rms=9.5 mm2026-03-18 ΔV=+1.95 Mm³ rms=7.8 mm2026-03-19 ΔV=+2.22 Mm³ rms=8.5 mm2026-03-20 ΔV=+1.62 Mm³ rms=7.7 mm2026-03-21 ΔV=+1.86 Mm³ rms=8.2 mm2026-03-22 ΔV=+2.03 Mm³ rms=8.5 mm2026-03-23 ΔV=+2.14 Mm³ rms=9.0 mm2026-03-24 ΔV=+2.30 Mm³ rms=7.8 mm2026-03-25 ΔV=+2.14 Mm³ rms=5.4 mm2026-03-26 ΔV=+3.04 Mm³ rms=9.5 mm2026-03-27 ΔV=+2.12 Mm³ rms=7.0 mm2026-03-28 ΔV=+1.90 Mm³ rms=6.9 mm2026-03-29 ΔV=+2.46 Mm³ rms=7.8 mm2026-03-30 ΔV=+1.71 Mm³ rms=9.7 mm2026-03-31 ΔV=+1.06 Mm³ rms=7.0 mm2026-04-01 ΔV=+1.80 Mm³ rms=8.2 mm2026-04-02 ΔV=+3.03 Mm³ rms=12.3 mm2026-04-03 ΔV=+1.74 Mm³ rms=8.4 mm2026-04-04 ΔV=+1.42 Mm³ rms=6.4 mm2026-04-05 ΔV=+0.70 Mm³ rms=4.9 mm2026-04-06 ΔV=+1.62 Mm³ rms=6.7 mm2026-04-07 ΔV=+2.05 Mm³ rms=6.5 mm2026-04-08 ΔV=+1.01 Mm³ rms=7.2 mm2026-04-09 ΔV=+1.69 Mm³ rms=7.7 mm2026-04-10 ΔV=+0.66 Mm³ rms=5.8 mm2026-04-11 ΔV=+1.11 Mm³ rms=6.1 mm2026-04-12 ΔV=+1.67 Mm³ rms=6.5 mm2026-04-13 ΔV=+0.38 Mm³ rms=6.1 mm2026-04-14 ΔV=+0.71 Mm³ rms=5.7 mm2026-04-15 ΔV=+0.98 Mm³ rms=5.9 mm2026-04-16 ΔV=+0.51 Mm³ rms=5.2 mm2026-04-17 ΔV=+1.39 Mm³ rms=6.1 mm2026-04-18 ΔV=+1.75 Mm³ rms=6.7 mm2026-04-19 ΔV=+0.90 Mm³ rms=6.4 mm2026-04-20 ΔV=+1.28 Mm³ rms=5.1 mm2026-04-21 ΔV=+0.48 Mm³ rms=8.0 mm2026-04-22 ΔV=+0.48 Mm³ rms=8.7 mm2026-04-23 ΔV=+0.70 Mm³ rms=6.0 mm2026-04-24 ΔV=+1.51 Mm³ rms=7.1 mm2026-04-25 ΔV=+0.50 Mm³ rms=6.0 mm2026-04-26 ΔV=+0.96 Mm³ rms=7.0 mm2026-04-27 ΔV=+1.71 Mm³ rms=8.4 mm2026-04-28 ΔV=+0.81 Mm³ rms=6.1 mm2026-04-29 ΔV=+1.97 Mm³ rms=7.0 mm2026-04-30 ΔV=+1.49 Mm³ rms=7.3 mm2026-05-01 ΔV=+1.67 Mm³ rms=7.1 mm2026-05-02 ΔV=+0.16 Mm³ rms=10.9 mm2026-05-03 ΔV=+1.47 Mm³ rms=5.9 mm2026-05-04 ΔV=+1.63 Mm³ rms=5.6 mm2026-05-05 ΔV=+1.10 Mm³ rms=6.3 mm2026-05-06 ΔV=+1.85 Mm³ rms=5.8 mm2026-05-07 ΔV=+1.43 Mm³ rms=5.9 mm2026-05-08 ΔV=+1.33 Mm³ rms=4.4 mm2026-05-09 ΔV=+0.94 Mm³ rms=4.6 mm2026-05-10 ΔV=+1.50 Mm³ rms=4.4 mm2026-05-11 ΔV=+1.28 Mm³ rms=5.0 mm2026-05-12 ΔV=+1.27 Mm³ rms=5.3 mm2026-05-13 ΔV=+1.48 Mm³ rms=4.9 mm2026-05-14 ΔV=+1.77 Mm³ rms=5.8 mm2026-05-15 ΔV=+1.61 Mm³ rms=4.5 mm2026-05-16 ΔV=+1.70 Mm³ rms=4.6 mm2026-05-17 ΔV=+0.97 Mm³ rms=4.1 mm2026-05-18 ΔV=+0.66 Mm³ rms=4.6 mm2026-05-19 ΔV=+1.88 Mm³ rms=7.2 mm2026-05-20 ΔV=+1.15 Mm³ rms=4.8 mm2026-05-21 ΔV=+1.46 Mm³ rms=5.5 mm2026-05-22 ΔV=+1.52 Mm³ rms=5.6 mm2026-05-23 ΔV=+1.70 Mm³ rms=5.6 mm2026-05-24 ΔV=+0.89 Mm³ rms=3.3 mm2026-05-25 ΔV=+1.22 Mm³ rms=6.3 mm2026-05-26 ΔV=+1.02 Mm³ rms=4.0 mm2026-05-27 ΔV=+0.19 Mm³ rms=2.2 mm2026-05-28 ΔV=+0.73 Mm³ rms=3.4 mm01.08.2530.09.2529.11.2528.01.2629.03.2628.05.26
Lava flux of Sundhnúkur eruptions (9 events, Dec 2023 - Aug 2025) — total 267 Mm³ of lava (≈ 0.27 km³). Each bar = one eruption, width = duration, height = total volume (Mm³), colour = peak flux. Largest (G6): peak ~2000 m³/s — the largest lava flux on Iceland since Skaftáreldar 1783.
0 Mm³30 Mm³61 Mm³G1G1: 2023-12-18 til 2023-12-21, 12.0 Mm³, topp ~300 m³/sG2G2: 2024-01-14 til 2024-01-16, 2.0 Mm³, topp ~200 m³/sG3G3: 2024-02-08 til 2024-02-10, 13.0 Mm³, topp ~600 m³/sG4G4: 2024-03-16 til 2024-05-09, 35.0 Mm³, topp ~1200 m³/sG5G5: 2024-05-29 til 2024-06-22, 45.0 Mm³, topp ~1500 m³/sG6G6: 2024-08-22 til 2024-09-06, 61.0 Mm³, topp ~2000 m³/sG7G7: 2024-11-20 til 2024-12-08, 49.0 Mm³, topp ~1300 m³/sG8G8: 2025-04-01 til 2025-04-01, 0.4 Mm³, topp ~100 m³/sG9G9: 2025-07-16 til 2025-08-05, 50.0 Mm³, topp ~800 m³/s12.2306.2401.2507.2501.2607.26< 400 m³/s400-800800-1500> 1500

Up = land rising (possible magma accumulation), down = subsidence. From Nevada Geodetic Lab (third-party processing, ~3-week lag, latest 2026-06-27). Interpreted deformation: Icelandic Met Office.

🌊 Volcanic tremor — Baseline volcanic tremor is currently low, with variations well explained by moderate win…
Tremor (RSAM)
IMO tremor plot (station grv). Most of the signal is weather and surf — not eruption confirmation. All stations: vedur.is ↗.
Weather now: wind 4 m/s (Grindavík), waves 1.4 m — moderate.
Baseline volcanic tremor is currently low, with variations well explained by moderate wind and ocean wave activity. (AI)
Band analysis past 9 days (from digitized RSAM values). High 2-4 Hz + low 0.5-1 Hz = possible magma-movement signal; high 0.5-1 Hz without 2-4 Hz = weather/surf.
0,5-1 Hz2609-7761 (~3620)1-2 Hz2174-7478 (~3000)2-4 Hz1065-7196 (~1739)16.0718.0720.0721.0723.0725.0726.07dark = low · orange = medium · red = high (per-band relative)

Earthquakes in the system

Time (UTC)MagDepth (km)Area
2026-07-26 13:17M1.24.9Reykjanesskagi
2026-07-26 06:16M-0.90.0Reykjanesskagi Grindavík
2026-07-25 22:53M-0.70.0Reykjanesskagi Grindavík
2026-07-25 16:44M1.88.3Reykjanesskagi
2026-07-25 16:44M0.05.3Reykjanesskagi Grindavík
2026-07-25 07:59M-0.70.0Reykjanesskagi Grindavík
2026-07-25 07:09M-0.10.0Reykjanesskagi Grindavík
2026-07-25 07:09M-0.84.9Reykjanesskagi Grindavík
2026-07-25 05:54M0.44.1Reykjanesskagi Grindavík
2026-07-25 01:40M-0.80.0Reykjanesskagi Grindavík
2026-07-24 12:31M-0.03.7Reykjanesskagi
2026-07-24 11:05M-0.70.0Reykjanesskagi Grindavík
2026-07-24 04:57M-0.25.3Reykjanesskagi Grindavík
2026-07-22 03:17M-0.84.8Reykjanesskagi Grindavík
2026-07-22 02:42M-1.14.2Reykjanesskagi Grindavík
2026-07-21 23:54M-0.25.5Reykjanesskagi Grindavík
2026-07-19 19:17M-0.70.0Reykjanesskagi Grindavík
2026-07-19 12:36M0.84.0Reykjanesskagi
2026-07-19 12:36M1.14.0Reykjanesskagi
2026-07-19 00:01M-0.50.0Reykjanesskagi Grindavík
2026-07-18 20:21M0.83.3Reykjanesskagi Grindavík
2026-07-18 19:30M0.05.9Reykjanesskagi Grindavík
2026-07-18 07:01M-1.23.9Reykjanesskagi Grindavík
2026-07-18 04:45M-0.90.0Reykjanesskagi Grindavík
2026-07-18 04:30M-0.52.4Reykjanesskagi Grindavík
2026-07-18 04:28M-0.70.0Reykjanesskagi Grindavík
2026-07-18 04:06M-0.91.1Reykjanesskagi Grindavík
2026-07-17 17:10M0.85.2Reykjanesskagi
2026-07-17 14:50M0.64.6Reykjanesskagi
2026-07-17 01:51M-0.73.1Reykjanesskagi Grindavík
2026-07-16 05:57M0.10.0Reykjanesskagi
2026-07-14 13:14M-0.10.0Reykjanesskagi Grindavík
2026-07-14 07:09M-1.56.0Reykjanesskagi Grindavík
2026-07-12 14:59M-0.03.2Reykjanesskagi Grindavík
2026-07-11 07:28M-0.13.4Reykjanesskagi Grindavík
2026-07-10 23:54M-0.10.1Reykjanesskagi Grindavík
2026-07-10 17:59M2.19.8Reykjanesskagi Grindavík
2026-07-10 02:36M-1.00.0Reykjanesskagi Grindavík
2026-07-08 04:32M-0.73.6Reykjanesskagi Grindavík
2026-07-07 05:57M0.77.2Reykjanesskagi Grindavík
2026-07-07 05:03M0.54.9Reykjanesskagi Grindavík
2026-07-07 05:03M-0.23.8Reykjanesskagi Grindavík
2026-07-07 04:57M0.38.3Reykjanesskagi
2026-07-05 08:48M-1.20.0Reykjanesskagi Grindavík
2026-07-05 05:02M-1.00.0Reykjanesskagi Grindavík
2026-07-05 01:08M-0.410.8Reykjanesskagi Grindavík
2026-07-04 12:29M1.716.9Reykjanesskagi Grindavík
2026-07-04 12:28M-0.219.9Reykjanesskagi Grindavík
2026-07-04 12:23M-0.40.0Reykjanesskagi Grindavík
2026-07-04 11:56M-0.91.2Reykjanesskagi Grindavík
2026-07-04 05:52M-0.60.0Reykjanesskagi Grindavík
2026-07-03 02:56M-0.12.9Reykjanesskagi Grindavík
2026-06-29 23:44M-1.15.5Reykjanesskagi Grindavík
2026-06-29 00:37M-0.80.0Reykjanesskagi Grindavík
2026-06-25 18:51M0.90.0Reykjanesskagi
2026-06-25 03:23M-0.90.0Reykjanesskagi Grindavík
2026-06-24 11:01M-0.10.0Reykjanesskagi Grindavík
2026-06-24 02:43M-0.25.4Reykjanesskagi Grindavík
2026-06-23 14:02M-0.10.0Reykjanesskagi Grindavík
2026-06-23 02:50M-0.60.0Reykjanesskagi
For the advanced — expert charts — Coulomb, migration, InSAR
🔬 Coulomb stress transfer — advanced analysis
7 earthquakes M≥3.0 in this window on this system. Such events transfer stress to neighbouring faults — some become more likely to slip, others less ("Coulomb stress transfer"). The Met Office does not publish focal mechanisms for automatically located events, so Skjálfti does not compute this itself — it requires strike/dip/rake data which is only available for M≥4.5 events in the GCMT catalogue.

For Coulomb analysis, see: USGS Coulomb 3.4 (stand-alone software) and focal mechanisms for Iceland in Global CMT.
📡 InSAR — radar deformation across the area
InSAR is satellite radar from Sentinel-1: it measures deformation across the whole area, not just points like GNSS stations. Six-day interferograms reveal where the ground rose or subsided between passes. InSAR distinguishes vertical deformation (magma chamber inflation) from horizontal (dike intrusion) — GNSS alone cannot.

View latest interferograms and time-series at COMET LiCS portal (Sentinel-1, ~4-6 day lag).

System journal

Automatic snapshots and media coverage, in chronological order. Subscribe: RSS · ntfy skjalftar-reykjanes-svartsengi
2026-07-22 00:00:06 UTC
Over the last 24 hours, only 1 earthquake was detected in the Reykjanes and Svartsengi volcanic system, indicating that activity is decreasing and is currently below the weekly rate. This seismic activity is within what is considered normal for this area, consisting mostly of scattered background activity rather than swarms, and most closely resembles the period around December 30, 2025. The largest earthquake in the last 48 hours was magnitude M-0.2, with a cumulative moment magnitude of Mw -0.2 over the same period. Please note that these are automatic preliminary results with unreliable depths, but further details on ground deformation and trends can be found in the reports below.
Repeated × 2 since 2026-07-20 20:35:04 — last 2026-07-21 13:35:02
Over the last 24 hours, seismic activity in the Reykjanes and Svartsengi fissure system has decreased, with no earthquakes detected, placing the activity below the weekly average. This scattered background activity is within the normal range for this area, with a historical analogy most closely resembling the period around December 30, 2025. The cumulative magnitude of earthquakes over the last 48 hours was Mw -0.7, with the largest event measuring M-0.7, although these are automatic preliminary results with unreliable depths. Rapid and step-like deformation from ground uplift continues to be measured according to older GNSS data, and further maps and trend plots can be viewed lower on the page.
2026-07-20 18:30:06 UTC
Over the last 24 hours, only 1 earthquake was detected on the Reykjanes peninsula, indicating that activity is decreasing and is currently below the weekly average of 2 earthquakes per day. This seismic activity is considered normal for this area, consisting mostly of scattered background activity rather than swarms, as 86% of the events over the last 7 days were independent. The largest earthquake in the last 48 hours was magnitude 1.1 (M1.1) with a cumulative moment magnitude of 1.3 (Mw), although these results are automatic preliminary findings where depth is unreliable. GNSS data show rapid, step-like deformation cycles, and further charts and maps detailing this development can be found below.
2026-07-20 00:15:05 UTC
Over the last 24 hours, 3 earthquakes were detected on the Reykjanes peninsula, with seismic activity remaining similar to the past week, which is considered normal background activity for this area. This represents scattered background activity rather than earthquake swarms, with the largest earthquake in the last 48 hours measuring magnitude 1.1 and the cumulative magnitude for the period reaching 1.3. Rapid, step-like deformation due to land uplift continues to be detected at Svartsengi, although it should be noted that the seismic results are automatic preliminary data with unreliable depths. This activity most closely resembles the period around 30 December 2025, and further maps and trend charts can be found lower on the page.
2026-07-18 19:50:05 UTC
Over the last 24 hours, seismic activity in the Reykjanes and Svartsengi fissure system has been increasing, with 6 earthquakes recorded, which is well above the weekly average. This activity is, however, within what is normal for this area, where the two-year daily average is 5.1 earthquakes per day, consisting of scattered background activity rather than swarms. The largest earthquake in the last 48 hours was magnitude 0.8 (M0.8), and the cumulative magnitude in the area was 0.9 (Mw). The current activity most closely resembles the period around January 22, 2025, although it should be noted that these are automatic preliminary results where depth is unreliable. Further information on ground deformation and trends can be found in the sections below.
2026-07-17 20:10:03 UTC
Over the last 24 hours, 3 earthquakes were detected in the Reykjanes and Svartsengi fissure system, indicating that activity is increasing as the last 24 hours are well above the weekly average of 1 earthquake per day. This seismic activity is, however, within what is considered normal for this area, with the largest earthquake in the last 48 hours measuring magnitude 0.8 and the cumulative moment magnitude for the same period being 0.9 Mw. The activity consists of scattered background activity rather than swarms, as 76% of events over the last 7 days were independent, and the situation most closely resembles the period around January 2, 2025. Please note that these results are automatic preliminary findings with unreliable depth measurements, but further details on the rapid and step-like deformation changes on GNSS instruments can be found in the charts below.
2026-07-17 16:25:04 UTC
Over the last 24 hours, 2 earthquakes were detected in the Reykjanes and Svartsengi fissure system, which is a level of activity similar to the past week and considered normal for this area. The largest earthquake in the last 48 hours was magnitude 0.6 (M0.6), with a cumulative moment magnitude of 0.6 (Mw) during the same period. This represents scattered background activity rather than swarms, as 64% of events over the last seven days were independent background events, and the activity most closely resembles the period around November 11, 2025. It should be noted that these results are automatic preliminary findings with unreliable depths, but further details on ground deformation and trends can be found in the charts below.
2026-07-17 09:10:05 UTC
Over the last 24 hours, 2 earthquakes were detected on the Reykjanes peninsula, indicating that activity in this fissure system is similar to the past week and is considered normal for this area. The seismicity consists mostly of scattered background activity rather than swarms, with the largest earthquake in the last 48 hours measuring magnitude 0.1 and the cumulative moment magnitude during this period being 0.3 Mw. Rapid, step-like deformation is measured at the Svartsengi GNSS station, though these results are automatic preliminary data with unreliable depths. The current activity most closely resembles the period around 29 September 2025, and further maps and trend charts can be found below.
2026-07-17 02:45:04 UTC
Over the last 24 hours, 3 earthquakes were detected in the Reykjanes and Svartsengi fissure system, indicating that activity is increasing as the last 24 hours are well above the weekly rate. This seismic activity is, however, within what is considered normal for this area, currently consisting of scattered background activity rather than swarms, closely resembling the period around September 29, 2025. The largest earthquake in the last 48 hours was magnitude 0.1, with a cumulative moment magnitude of 0.3 Mw, while measurements also show rapid and step-like deformation due to ground uplift. Please note that these are automatic preliminary results with unreliable depths; further maps and trend plots can be viewed below on the page.
2026-06-20 06:45:04 UTC
In the last 24 hours, eight earthquakes were recorded in the Reykjanes/Svartsengi system and activity is decreasing compared to the weekly average. This frequency is within normal levels for the area and is characterized by distributed background activity rather than swarms. The largest earthquake was M1.8 and automatic preliminary results show minor, step-like deformation at the GNSS station. Further charts on trends and deformation are available below.
2026-06-20 03:55:03 UTC
In the last 24 hours, six earthquakes were recorded in the Reykjanes/Svartsengi system, which is below the weekly average and indicates that activity is decreasing. This background activity is within normal levels for the area and is characterized by scattered events rather than swarms. The largest earthquake was M1.8, and results are automatic preliminary results where depth is unreliable. Further data on land uplift and trends can be found lower on the page.
2026-06-20 00:15:03 UTC
In the last 24 hours, three earthquakes were recorded in the Reykjanes/Svartsengi system, which is below the weekly average and indicates that activity is decreasing. This background activity is within normal levels for the area and is characterized by scattered events rather than swarms. Results are automatic preliminary results and most closely resemble the period around April 8, 2025. Further charts and maps are available lower on the page.
2026-06-19 21:35:04 UTC
In the last 24 hours, two earthquakes were recorded in the Reykjanes/Svartsengi system and activity is decreasing compared to the weekly average. This background activity is within normal levels for the area and is characterized by distributed activity rather than swarms. Results are automatic preliminary results and most closely resemble the period around April 8, 2025. Further data on land uplift and trends can be found lower on the page.
2026-06-19 18:25:03 UTC
In the last 24 hours, five earthquakes were recorded in the Reykjanes/Svartsengi system and activity is decreasing compared to the weekly average. This frequency is considered normal for the area and is characterized by distributed background activity rather than swarms, with the largest earthquake being M0.7 and a cumulative magnitude of Mw 0.9. Results are automatic preliminary results and most closely resemble the period around April 8, 2025, while further charts on land uplift and trends can be viewed below.
2026-06-19 15:40:07 UTC
In the last 24 hours, four earthquakes were recorded in the Reykjanes/Svartsengi system, which is below the weekly average and indicates that activity is decreasing. This background activity is within normal levels for the area and consists mostly of scattered events rather than swarms. The cumulative magnitude over the past 48 hours was Mw 0.9, and results are automatic preliminary results. Further details on deformation and trends can be found lower on the page.
Repeated × 2 since 2026-06-19 07:25:03 — last 2026-06-19 12:25:03
In the last 24 hours, six earthquakes were recorded in the Reykjanes/Svartsengi system and activity is decreasing compared to the weekly average, yet remains within normal levels for this area. Seismicity is characterized by distributed background activity rather than swarms, with the largest earthquake in the past 48 hours being M0.7 with a cumulative magnitude of Mw 1.0. This period most closely resembles conditions around April 8, 2025, and results are automatic preliminary results. Further reports on land uplift and trends can be found below.
2026-06-19 04:40:05 UTC
In the last 24 hours, five earthquakes were recorded in the Reykjanes/Svartsengi system, which is below the weekly average and indicates that activity is decreasing. This background activity is within normal levels for the area and is characterized by distributed activity rather than swarms. Results are automatic preliminary results and most closely resemble the period around April 8, 2025. Further charts and maps are available below.
2026-06-19 01:15:04 UTC
In the last 24 hours, 8 earthquakes were recorded in the Reykjanes/Svartsengi system, which is below the weekly average and indicates that activity is decreasing. This background activity is within normal levels for the area and is characterized by scattered events rather than swarms. The cumulative magnitude over the last 48 hours was Mw 1.0, and results are automatic preliminary results. Further details on land uplift and trends can be found lower on the page.
What do the numbers mean — and what should I do?

β (swarm signal): how high activity is versus the area's 2-year average. β above 2 means an ongoing swarm. It measures activity, not a forecast of a large quake.

Cumulative moment (Mw): the combined energy of the quakes in the period. Uplift (GNSS): whether the ground is rising or sinking, mm per year — the data are a few weeks old. Some systems (e.g. Svartsengi) deform in steps during eruption cycles rather than at a steady annual rate.

Swarm character is computed for a whole volcanic belt, not a single system — it describes the belt, not necessarily this one system.

What should I do? This is automatic monitoring for information — not an official warning. Follow official information from the Icelandic Met Office and Civil Protection (112).