Seismicity by period · derived statistics from Skjálftalísa (Icelandic Met Office)
Status (automatic)
No particular signs of unrest in the last 24 hours — 0 earthquakes recorded, within the system's normal range.
Volcanic system north of Langjökull with a well-known geothermal area. Last erupted around 950 AD. (overview — more at vedur.is) · circle on the map = rough outline of the system (radius).
📜 Did you know?
Hveravellir is a geothermal field in the central highlands, on the Kjölur route between Langjökull and Hofsjökull, with many hot springs and pools. The 18th-century outlaw Fjalla-Eyvindur sheltered here and is said to have cooked his food in the hot springs. The site was long a key waypoint on Kjalvegur, an ancient route across the interior.
Points = earthquake locations in the selected window, coloured by magnitude: ● M3+ · ● M2+ · ● smaller (a sample if more than 800).
Earthquakes
0
Largest
–
M3,0+
0
Depth range
–
Earthquakes over time
Cumulative count · 0 earthquakes · countmoment
Depth (0 km at top).
Not enough depth data.
Magnitude distribution
Earthquakes
0
Largest
–
M3,0+
0
Depth range
–
Earthquakes over time
Cumulative count · 0 earthquakes · countmoment
Depth (0 km at top).
Not enough depth data.
Magnitude distribution
Earthquakes
1
Largest
M0.2
M3,0+
0
Depth range
5–5 km
Earthquakes over time
Cumulative count · 1 earthquakes · total moment ≈ M0.2 · countmoment
Depth (0 km at top). Grey: fixed depth.
Not enough depth data.
Magnitude distribution
Earthquakes
5
Largest
M4.7
M3,0+
2
Depth range
5–5 km
Earthquakes over time
Cumulative count · 5 earthquakes · total moment ≈ M4.7 · countmoment
Depth (0 km at top). Grey: fixed depth.
Magnitude distribution
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
Earthquakes
26
Largest
M4.7
M3,0+
2
Depth range
0–6 km
Earthquakes over time
Cumulative count · 26 earthquakes · total moment ≈ M4.7 · countmoment
Depth (0 km at top). Grey: fixed depth.
Magnitude distribution
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
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
34
Largest
M4.7
M3,0+
2
Depth range
0–6 km
Earthquakes over time
Cumulative count · 34 earthquakes · total moment ≈ M4.7 · countmoment
Depth (0 km at top). Grey: fixed depth.
Magnitude distribution
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
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.
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.
Earthquakes in the system
Time (UTC)
Mag
Depth (km)
Area
2026-07-20 13:27
M0.2
5.2
Other areas
2026-07-08 08:15
M0.9
5.2
Other areas
2026-06-27 18:26
M4.7
5.2
Other areas
2026-06-27 16:58
M3.1
5.2
Langjökull
2026-06-27 16:31
M-1.0
5.2
Other areas
2026-05-31 00:07
M1.1
0.0
Other areas
2026-04-17 06:19
M1.9
2.0
Other areas
2026-04-16 15:09
M2.0
2.6
Other areas
2026-04-01 12:51
M1.7
4.5
Other areas
2026-03-30 17:25
M1.9
5.3
Other areas
2025-09-19 12:21
–
4.1
Other areas
2025-09-10 08:45
–
6.0
Other areas
2025-08-20 02:55
–
3.8
Other areas
2025-08-18 18:31
–
3.1
Other areas
2025-08-18 00:59
–
5.4
Other areas
2025-08-17 09:11
–
4.7
Other areas
2025-08-17 08:37
–
3.5
Other areas
2025-08-17 08:28
–
5.9
Other areas
2025-08-17 08:27
–
3.7
Other areas
2025-08-17 07:27
–
4.9
Other areas
2025-08-17 01:36
–
5.2
Other areas
2025-08-17 00:46
–
5.8
Other areas
2025-08-16 23:35
–
6.1
Other areas
2025-08-16 23:08
–
5.1
Other areas
2025-08-16 22:29
–
5.2
Other areas
2025-08-16 22:23
–
4.9
Other areas
2025-04-18 21:21
M1.5
1.1
Other areas
2024-09-18 22:14
M1.2
1.1
Other areas
2024-08-14 00:05
–
1.5
Other areas
2024-08-11 06:09
–
0.9
Other areas
2024-08-11 01:05
–
0.5
Other areas
2024-08-10 23:57
M1.4
1.0
Other areas
2024-08-10 23:49
M1.6
3.8
Other areas
2024-08-10 22:32
M1.7
1.1
Other areas
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).