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Reykjanes / Svartsengi

Seismicity by period · derived statistics from Skjálftalísa (Icelandic Met Office)
Status (automatic)
In the last 24 hours, five earthquakes were recorded in the Reykjanes/Svartsengi system and activity is similar to the past week. Seismicity remains within normal levels for this area and is characterized by distributed background activity rather than swarms. The cumulative magnitude of the largest events in the last 48 hours was Mw 1.8, and current conditions most closely resemble the period around February 11, 2026. Results are automatic preliminary results, and further reports are available below.
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 — 11 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 (2026-06-10T08:00 UTC). Yellow > 20 µg/m³, orange > 125 (health threshold), red > 350. Nearest stations to this system; past 24h shown for the highest.
Grindavík7.4 µg/m³
Ásbrú (Keflavík)7.1 µg/m³
Keflavík (Vatnaveröld)4.7 µg/m³
Sandgerði3.8 µg/m³
Vogar3.6 µg/m³
2009:0013:0017:0021:0001:0005:00
Points = earthquake locations in the selected window, coloured by magnitude: ● M3+ · ● M2+ · ● smaller (a sample if more than 800).
Earthquakes
5
Largest
M1.7
M3,0+
0
Depth range
0–2 km
Earthquakes over time
309:2014:0818:5623:4404:3209:20
Cumulative count · 5 earthquakes · total moment ≈ M1.8 · count moment
n=50M1.8009:2014:0818:5623:4404:3209:20
Depth (0 km at top). Grey: fixed depth.
0km1km2km09:2014:0818:5623:4404:3209:20
Magnitude distribution
3<121–202–303–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km1km2km22.70°W22.63°W22.57°W22.51°W22.44°WE-W
0km1km2km63.83°N63.84°N63.86°N63.87°N63.89°NN-S
Earthquakes
11
Largest
M1.7
M3,0+
0
Depth range
0–20 km
Earthquakes over time
208.0608.0609.0609.0609.0610.06
Cumulative count · 11 earthquakes · total moment ≈ M1.8 · count moment
n=110M1.8008.0608.0609.0609.0609.0610.06
Depth (0 km at top). Grey: fixed depth.
0km10km20km08.0608.0609.0609.0609.0610.06
Magnitude distribution
9<121–202–303–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km10km20km22.70°W22.62°W22.55°W22.47°W22.39°WE-W
0km10km20km63.83°N63.85°N63.86°N63.88°N63.89°NN-S
Earthquakes
23
Largest
M1.7
M3,0+
0
Depth range
0–20 km
Earthquakes over time
203.0604.0606.0607.0608.0610.06
Cumulative count · 23 earthquakes · total moment ≈ M1.8 · count moment
n=230M1.8003.0604.0606.0607.0608.0610.06
Depth (0 km at top). Grey: fixed depth.
0km10km20km03.0604.0606.0607.0608.0610.06
Magnitude distribution
21<121–202–303–40≥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°W22.37°WE-W
0km10km20km63.83°N63.86°N63.90°N63.94°N63.97°NN-S
Earthquakes
80
Largest
M2.4
M3,0+
0
Depth range
0–20 km
Earthquakes over time
1511.0517.0523.0529.0504.0610.06
Cumulative count · 80 earthquakes · total moment ≈ M2.6 · count moment
n=800M2.6011.0517.0523.0529.0504.0610.06
Depth (0 km at top) — shallowing in the data (4.7→2.0 km). Grey: fixed depth.
0km10km20km11.0517.0523.0529.0504.0610.06
Magnitude distribution
72<161–222–303–40≥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°W22.37°WE-W
0km10km20km63.80°N63.84°N63.88°N63.93°N63.97°NN-S
Earthquakes
893
Largest
M2.4
M3,0+
0
Depth range
0–20 km
Earthquakes over time
24310.0622.0803.1115.0129.0310.06
Cumulative count · 893 earthquakes · total moment ≈ M2.8 · count moment
n=8930M2.8010.0622.0803.1115.0129.0310.06
Depth (0 km at top). Grey: fixed depth.
0km10km20km10.0622.0803.1115.0129.0310.06
Magnitude distribution
454<1641–232–303–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km10km20km22.72°W22.63°W22.54°W22.46°W22.37°WE-W
0km10km20km63.79°N63.84°N63.89°N63.95°N64.00°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
4993
Largest
M3.6
M3,0+
6
Depth range
0–20 km
Earthquakes over time
91010.0603.1129.0322.0815.0110.06
Cumulative count · 4993 earthquakes · total moment ≈ M4.0 · count moment
n=49930M4.0010.0603.1129.0322.0815.0110.06
Depth (0 km at top). Grey: fixed depth.
0km10km20km10.0603.1129.0322.0815.0110.06
Magnitude distribution
1927<13681–2712–363–40≥4
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
0km10km19km22.72°W22.63°W22.55°W22.46°W22.37°WE-W
0km10km19km63.79°N63.84°N63.88°N63.93°N63.97°NN-S
Gutenberg-Richter b ≈ 0.90 ± 0.07 (i.e. likely 0.83–0.96, M≥1.7, n=135)
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
-105mm+0mm+771mm10.0618.0827.1004.0115.0323.05
REYK (Reykjavík) — reference ~-2 mm/yr
-12mm+0mm+40mm10.0618.0827.1004.0115.0323.05
Show all stations (N/E/Up + cluster)
SENG — horizontal and vertical displacement (N · E · Up) past 365 d, mm from first reading
-40mm+15mm+70mmN-93mm-43mm+7mmE-105mm+333mm+771mmUp10.06.2518.08.2527.10.2504.01.2615.03.2623.05.26
Þorbjörn/Svartsengi cluster — Up comparison past 365 d, mm from each station's first reading
-160mm+0mm+771mmHS02NBIOORFCSENGSKSH10.06.2518.08.2527.10.2504.01.2615.03.2623.05.26
Advanced uplift analysis (cycle, baseline, Mogi)
Since Gos 9 (2025-07-16): 329 days · +850 mm uplift · +0.5 mm/dag rate — 551% 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.
-133mm-22mm+90mmSENG↔HS02SENG↔NBIOSENG↔ORFCSENG↔SKSH10.06.2514.08.2518.10.2523.12.2526.02.2602.05.26
Mogi ΔV(t) — fixed Svartsengi chamber (63.889°N, -22.461°W, depth 4.5 km — Sigmundsson et al. 2024). Past 30-d mean: +1.34 Mm³/30d. Latest day (2026-05-28): +1.06 Mm³ (rms 5.7 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=+1.13 Mm³ rms=4.8 mm2026-05-25 ΔV=+1.25 Mm³ rms=6.9 mm2026-05-26 ΔV=+1.33 Mm³ rms=6.8 mm2026-05-27 ΔV=+0.48 Mm³ rms=1.8 mm2026-05-28 ΔV=+1.06 Mm³ rms=5.7 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/s12.2306.2412.2406.2512.2506.26< 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 2026-05-23). Interpreted deformation: Icelandic Met Office.

🌊 Volcanic tremor — Baseline tremor is currently normal, but unreliable weather models at this inland station…
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 7 m/s (Grindavík), waves 1.0 m — moderate.
Baseline tremor is currently normal, but unreliable weather models at this inland station mean only recent days can be used for comparison. (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 Hz2217-7761 (~3587)1-2 Hz1761-7478 (~2935)2-4 Hz891-7196 (~1804)31.0502.0603.0605.0607.0608.0610.06dark = low · orange = medium · red = high (per-band relative)

Earthquakes in the system

Time (UTC)MagDepthArea
2026-06-10 02:48M0.60.0Reykjanesskagi
2026-06-10 02:29M1.70.0Reykjanesskagi
2026-06-10 02:22M1.52.3Reykjanesskagi Grindavík
2026-06-09 20:05M0.80.0Reykjanesskagi
2026-06-09 10:03M-0.90.2Reykjanesskagi Grindavík
2026-06-09 07:09M-1.01.1Reykjanesskagi Grindavík
2026-06-08 23:37M-1.12.8Reykjanesskagi Grindavík
2026-06-08 23:37M-1.13.7Reykjanesskagi Grindavík
2026-06-08 20:16M-0.619.9Reykjanesskagi Grindavík
2026-06-08 13:17M-1.51.1Reykjanesskagi Grindavík
2026-06-08 12:27M-1.01.1Reykjanesskagi Grindavík
2026-06-07 07:11M-0.10.0Reykjanesskagi
2026-06-07 02:43M-0.95.4Reykjanesskagi Grindavík
2026-06-06 11:02M-0.70.0Reykjanesskagi Grindavík
2026-06-06 03:33M-0.60.0Reykjanesskagi Grindavík
2026-06-06 03:33M-1.45.1Reykjanesskagi Grindavík
2026-06-06 00:28M-1.70.5Reykjanesskagi Grindavík
2026-06-06 00:28M-1.70.5Reykjanesskagi Grindavík
2026-06-04 22:53M-1.31.8Reykjanesskagi
2026-06-04 07:00M0.53.2Reykjanesskagi
2026-06-03 23:07M0.07.3Reykjanesskagi
2026-06-03 14:16M0.01.1Reykjanesskagi Grindavík
2026-06-03 09:45M0.25.6Reykjanesskagi Grindavík
2026-06-03 08:03M-1.21.8Reykjanesskagi Grindavík
2026-06-03 08:03M0.14.3Reykjanesskagi Grindavík
2026-06-03 01:25M-0.60.0Reykjanesskagi Grindavík
2026-06-03 01:25M-1.71.7Reykjanesskagi Grindavík
2026-06-03 01:25M-1.61.6Reykjanesskagi Grindavík
2026-06-02 18:51M0.03.9Reykjanesskagi Grindavík
2026-06-02 14:53M0.34.4Reykjanesskagi Grindavík
2026-06-02 02:22M0.85.7Reykjanesskagi Grindavík
2026-06-01 21:53M-1.00.0Reykjanesskagi Grindavík
2026-06-01 12:40M-1.86.1Reykjanesskagi Grindavík
2026-06-01 08:09M0.35.6Reykjanesskagi
2026-06-01 04:38M-0.54.5Reykjanesskagi
2026-05-31 12:48M-0.54.3Reykjanesskagi Grindavík
2026-05-30 13:23M-0.00.0Reykjanesskagi Grindavík
2026-05-30 12:26M0.54.9Reykjanesskagi Grindavík
2026-05-30 12:26M0.06.4Reykjanesskagi Grindavík
2026-05-30 08:13M-1.84.5Reykjanesskagi Grindavík
2026-05-30 06:43M-2.02.8Reykjanesskagi Grindavík
2026-05-30 06:43M-2.02.8Reykjanesskagi Grindavík
2026-05-30 03:59M-0.90.0Reykjanesskagi Grindavík
2026-05-30 03:12M-0.25.2Reykjanesskagi Grindavík
2026-05-30 03:08M0.15.6Reykjanesskagi Grindavík
2026-05-30 03:08M-1.29.6Reykjanesskagi Grindavík
2026-05-30 02:52M0.34.1Reykjanesskagi Grindavík
2026-05-30 02:52M1.25.2Reykjanesskagi Grindavík
2026-05-30 02:47M-0.15.9Reykjanesskagi Grindavík
2026-05-30 02:39M0.04.7Reykjanesskagi Grindavík
2026-05-30 02:39M0.22.0Reykjanesskagi Grindavík
2026-05-29 22:47M-0.80.0Reykjanesskagi Grindavík
2026-05-29 21:16M-0.64.7Reykjanesskagi Grindavík
2026-05-28 20:46M-0.27.9Reykjanesskagi Grindavík
2026-05-28 15:33M-0.14.4Reykjanesskagi Grindavík
2026-05-28 07:24M-1.16.9Reykjanesskagi Grindavík
2026-05-28 03:11M-0.25.9Reykjanesskagi Grindavík
2026-05-27 23:19M0.14.7Reykjanesskagi Grindavík
2026-05-27 21:30M-1.18.6Reykjanesskagi Grindavík
2026-05-27 18:42M-0.80.0Reykjanesskagi Grindavík
For the advanced — expert charts — Coulomb, migration, InSAR
🔬 Coulomb stress transfer — advanced analysis
6 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 — ratsjár-aflögun yfir allt svæðið
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
2026-06-10 02:45:03 UTC
In the last 24 hours, five earthquakes were recorded in the Reykjanes/Svartsengi system and activity is similar to the past week. Seismicity is within normal levels for this area and is characterized by distributed background activity rather than swarms. The cumulative magnitude of the largest events in the last 48 hours was Mw 1.8, and current conditions most closely resemble the period around February 12, 2026. Results are automatic preliminary results, and further reports can be found lower on the page.
2026-06-09 23:50:04 UTC
In the last 24 hours, three earthquakes were recorded in the Reykjanes/Svartsengi system, indicating activity similar to the past week and within normal levels for this area. The seismicity is characterized by distributed background activity rather than swarms and most closely resembles the period around November 11, 2024. The largest earthquake in the last 48 hours was Mw 0.8, and uplift at Svartsengi is minor and step-like. These results are automatic preliminary results, and further reports are available below.
Repeated × 2 since 2026-06-09 13:30:06 — last 2026-06-09 20:30:05
In the last 24 hours, five earthquakes were recorded in the Reykjanes/Svartsengi system, indicating activity similar to the past week and within normal levels for this area. The recent pattern is characterized by distributed background activity rather than distinct swarms and most closely resembles the period around November 11, 2024. The largest earthquake in the last 48 hours was Mw 0.8, and these figures are automatic preliminary results. Further details on land uplift and trends are available below.
2026-06-09 10:05:04 UTC
In the last 24 hours, seven earthquakes were recorded in the Reykjanes/Svartsengi system and activity is increasing although still within normal levels for this area. The increase consists mostly of short-lived swarms rather than distributed background activity, with the largest event being M-0.6. Automatic preliminary results show that uplift at Svartsengi is minor and step-like, most similar to the period around January 8, 2026. Further charts and maps are available below.
2026-06-09 07:30:05 UTC
In the last 24 hours, six earthquakes were recorded in the Reykjanes/Svartsengi system and activity is increasing although still within normal levels for this area. The increase consists mostly of short-lived swarms rather than distributed background activity, with the largest event at M-0.6. Automatic preliminary results show minor, step-like deformation on GNSS stations and activity most closely resembles the period around January 10, 2026. Further charts and maps are available below.
2026-06-09 00:15:04 UTC
In the last 24 hours, five earthquakes were recorded in the Reykjanes/Svartsengi system and activity is similar to the past week. Seismicity is within normal levels for this area and the increase consists mostly of short-lived swarms. The cumulative magnitude of the largest events in the last 48 hours was Mw -0.0 and uplift at Svartsengi is minor and step-like. Results are automatic preliminary results and further charts are available below.
2026-06-08 20:30:05 UTC
In the last 24 hours, three earthquakes were recorded in the Reykjanes/Svartsengi system, indicating activity similar to the past week and within normal levels for this area. The recent increase is primarily due to short-lived swarms rather than distributed background seismicity, with the largest event in the past 48 hours measuring M-0.1. These automatic preliminary results most closely resemble the period around November 12, 2024, and further data on deformation and trends are available below.
2026-06-08 15:50:04 UTC
In the last 24 hours, two earthquakes were recorded in the Reykjanes/Svartsengi system and activity is similar to the past week, which is considered normal for this area. The increase over recent days is mostly due to short-lived swarms rather than distributed background activity. These automatic preliminary results most closely resemble the period around November 12, 2024, in terms of magnitude. Further plots on land uplift and trends are available below.
2026-06-08 12:40:05 UTC
In the last 24 hours, one earthquake was recorded in the Reykjanes/Svartsengi system and activity is decreasing compared to the weekly average. This frequency is considered normal for the area, with recent increases consisting mostly of short-lived swarms rather than distributed background activity. The activity most closely resembles the period around November 12, 2024, though these are automatic preliminary results. Further reports on land uplift and trends can be found lower on the page.
2026-06-08 07:20:04 UTC
In the last 24 hours, no seismic activity was measured in the Reykjanes/Svartsengi system and activity is decreasing compared to the weekly average. This level is within what is considered normal for the area, though increased activity over the past week has consisted mostly of short-lived swarms rather than distributed background activity. Results are automatic preliminary results and most closely resemble the period around November 12, 2024. Further charts and maps are available below.
2026-06-08 02:45:03 UTC
In the last 24 hours, one earthquake was 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 the recent increase has consisted mostly of short-lived swarms. Activity most closely resembles the period around November 12, 2024, though results are automatic preliminary results. Further reports on land uplift and trends can be found lower on the page.
2026-06-07 11:05:04 UTC
In the last 24 hours, two earthquakes were recorded in the Reykjanes/Svartsengi system and activity is similar to the past week. This frequency is within normal levels for the area and the increase consists mostly of short-lived swarms rather than distributed background activity. The activity most resembles the period around November 11, 2024, though these are automatic preliminary results. Further plots on land uplift and trends are available lower on the page.
2026-06-07 07:15:10 UTC
In the last 24 hours, three earthquakes were recorded in the Reykjanes/Svartsengi system, indicating activity similar to the past week and within normal levels for this area. The recent increase is primarily due to short-lived swarms rather than distributed background activity, with the largest earthquake in the last 48 hours measuring M-0.1. This activity most closely resembles the period around November 11, 2024, though results are automatic preliminary data. Further reports on land uplift and trends are available below.
2026-06-07 03:25:03 UTC
In the last 24 hours, four earthquakes were recorded in the Reykjanes/Svartsengi system, indicating activity similar to the past week and within normal levels for this area. The recent increase consists mostly of short-lived swarms rather than distributed background seismicity, with the largest event in the last 48 hours measuring M-0.6. These automatic preliminary results most closely resemble the period around November 12, 2024, and further details on deformation and trends are available below.
2026-06-07 00:35:04 UTC
In the last 24 hours, three earthquakes were recorded in the Reykjanes/Svartsengi system, with activity similar to the past week. This frequency is within normal levels for the area, and the increase consists mostly of short-lived swarms rather than distributed background activity. The activity most closely resembles the period around November 12, 2024, though results are automatic preliminary findings. Further data on land uplift and trends can be found lower on the page.
2026-06-06 11:25:05 UTC
In the last 24 hours, five earthquakes were recorded in the Reykjanes/Svartsengi system, indicating activity similar to the past week and within normal levels for this area. The recent increase is primarily due to short-lived swarms rather than distributed background seismicity, with the largest event in the last 48 hours being M-0.6. These automatic preliminary results most closely resemble the period around November 12, 2024, and further data on land uplift and trends are available below.
Repeated × 2 since 2026-06-06 03:40:06 — last 2026-06-06 07:30:08
In the last 24 hours, four earthquakes were recorded in the Reykjanes/Svartsengi system, indicating activity similar to the past week and within normal levels for this area. The recent increase is primarily due to short-lived swarms rather than distributed background activity, with the largest earthquake in the last 48 hours being M-0.6. Activity most closely resembles the period around November 12, 2024; results are automatic preliminary data, and further reports are available below.
2026-06-05 22:55:06 UTC
In the last 24 hours, no seismic activity was measured in the Reykjanes/Svartsengi system and activity is decreasing compared to the weekly average. This level is within normal range for the area as the recent increase has consisted mostly of short-lived swarms. Activity most closely resembles the period around July 18, 2024, but results are automatic preliminary results. Further reports 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).

Data: Icelandic Met Office (Skjálftalísa API), automatic preliminary results — may change. This is not an official warning. Official warnings: vedur.is and Civil Protection (112).