Tindfjallajökull
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. Volcano is in normal, non-eruptive state.
VONA = Volcano Observatory Notice for Aviation; the official Met Office colour code for aviation. Independent of Skjálfti's automatic analysis.
Central volcano between Hekla and Eyjafjallajökull. No eruptions in historical time. (overview — more at vedur.is) · circle on the map = rough outline of the system (radius).
Subglacial system: a subglacial eruption can cause a jökulhlaup (sudden glacial meltwater flood) with little warning, and volcanic gases (incl. SO₂, CO₂) can be dangerous near vents and may pool in hollows. These are standing features of the system, not a sign of an imminent eruption.
📜 Did you know?
Tindfjallajökull is the smallest glacier-capped central volcano in Iceland, its highest peak Ýmir reaching 1,462 m. It is an old, deeply eroded central volcano with a caldera, richer in silicic rock (rhyolite) than most neighbouring systems. No eruption is known there in historical time.
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 · count moment
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 · count moment
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 · count moment
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 · count moment
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 · count moment
Depth (0 km at top).
Not enough depth data.
Magnitude distribution
Earthquakes
2
Largest
M0.9
M3,0+
0
Depth range
10–15 km
Earthquakes over time
Cumulative count · 2 earthquakes · total moment ≈ M1.0 · count moment
Depth (0 km at top).
Not enough depth data.
Magnitude distribution
Earthquakes
7
Largest
M1.3
M3,0+
0
Depth range
2–15 km
Earthquakes over time
Cumulative count · 7 earthquakes · total moment ≈ M1.5 · count moment
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
32
Largest
M3.2
M3,0+
1
Depth range
1–15 km
Earthquakes over time
Cumulative count · 32 earthquakes · total moment ≈ M3.3 · count moment
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
81
Largest
M3.2
M3.0+
1
Days with data
71
This is a reduced view: it is built from the daily aggregate (counts, moment, magnitude bands, depth histogram) rather than individual events. Map points, the depth scatter, cross-sections and the migration fit are therefore missing — they need each event's location and depth. Counts, total moment and the b-value are exact, not approximated.
Earthquakes over time
Cumulative count and moment
Total moment of all events in the window equals a single Mw 3.3
Magnitude distribution
<149
1–227
2–34
3–41
≥40
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
132
Largest
M3.2
M3.0+
1
Days with data
117
This is a reduced view: it is built from the daily aggregate (counts, moment, magnitude bands, depth histogram) rather than individual events. Map points, the depth scatter, cross-sections and the migration fit are therefore missing — they need each event's location and depth. Counts, total moment and the b-value are exact, not approximated.
Earthquakes over time
Cumulative count and moment
Total moment of all events in the window equals a single Mw 3.4
Magnitude distribution
<169
1–250
2–312
3–41
≥40
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
625
Largest
M3.7
M3.0+
4
Days with data
351
This is a reduced view: it is built from the daily aggregate (counts, moment, magnitude bands, depth histogram) rather than individual events. Map points, the depth scatter, cross-sections and the migration fit are therefore missing — they need each event's location and depth. Counts, total moment and the b-value are exact, not approximated.
Earthquakes over time
Cumulative count and moment
Total moment of all events in the window equals a single Mw 3.9
Magnitude distribution
<1356
1–2219
2–346
3–44
≥40
Gutenberg-Richter b ≈ 1.02 ± 0.10 (i.e. likely 0.93–1.12, M≥1.7, n=94)
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
901
Largest
M3.7
M3.0+
5
Days with data
576
This is a reduced view: it is built from the daily aggregate (counts, moment, magnitude bands, depth histogram) rather than individual events. Map points, the depth scatter, cross-sections and the migration fit are therefore missing — they need each event's location and depth. Counts, total moment and the b-value are exact, not approximated.
Earthquakes over time
Cumulative count and moment
Total moment of all events in the window equals a single Mw 4.0
Magnitude distribution
<1377
1–2401
2–3116
3–45
≥40
Gutenberg-Richter b ≈ 1.18 ± 0.07 (i.e. likely 1.12–1.25, M≥1.7, n=248)
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.
Earthquakes in the system
| Time (UTC) | Mag | Depth (km) | Area |
|---|---|---|---|
| 2026-04-26 14:46 | M0.9 | 15.0 | Other areas |
| 2026-03-28 07:04 | M0.2 | 10.2 | Other areas |
| 2025-11-28 08:13 | M0.5 | 6.1 | Other areas |
| 2025-10-29 06:05 | M0.6 | 1.5 | Other areas |
| 2025-10-29 02:15 | M0.7 | 5.2 | Other areas |
| 2025-10-03 09:06 | M1.3 | 5.0 | Other areas |
| 2025-09-19 04:45 | M1.0 | 2.9 | Other areas |
| 2025-07-06 11:16 | M0.4 | 5.2 | Other areas |
| 2025-07-06 08:52 | M0.4 | 6.1 | Other areas |
| 2025-07-05 11:51 | M0.3 | 2.5 | Other areas |
| 2025-07-04 17:40 | M0.5 | 9.4 | Other areas |
| 2025-07-04 02:19 | M0.1 | 5.2 | Other areas |
| 2025-07-02 22:37 | M0.5 | 5.2 | Other areas |
| 2025-07-02 21:13 | M0.4 | 5.2 | Other areas |
| 2025-06-09 08:11 | M-0.2 | 1.1 | Other areas |
| 2025-06-05 10:08 | M0.9 | 5.2 | Other areas |
| 2025-06-05 00:06 | M0.2 | 4.9 | Other areas |
| 2025-05-26 22:06 | M0.3 | 7.9 | Other areas |
| 2025-05-26 18:50 | M0.0 | 3.9 | Other areas |
| 2025-05-22 21:12 | M0.6 | 5.0 | Other areas |
| 2025-05-22 19:41 | M0.6 | 1.7 | Other areas |
| 2025-05-14 23:49 | M2.1 | 14.0 | Other areas |
| 2025-04-13 02:17 | M1.0 | 5.2 | Other areas |
| 2025-04-02 23:58 | M0.3 | 1.1 | Other areas |
| 2025-04-01 16:55 | M2.5 | 13.2 | Other areas |
| 2025-04-01 02:20 | M0.2 | 1.1 | Other areas |
| 2025-03-31 22:35 | M0.5 | 3.4 | Other areas |
| 2024-12-06 13:01 | M2.8 | 1.1 | Other areas |
| 2024-10-31 09:05 | M0.4 | 1.1 | Mýrdalsjökull (Katla) |
| 2024-10-11 07:13 | M1.1 | 5.2 | Other areas |
| 2024-10-06 17:57 | M3.2 | 5.2 | Other areas |
| 2024-10-01 08:47 | M0.6 | 5.2 | 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).