Hrómundartindur

No particular signs of unrest in the last 24 hours — 0 earthquakes recorded, within the system's normal range.

Small volcanic system east of Hengill, often treated as separate from the Hengill system (GVP 371051). Independent magma intrusions were detected in 1994 — magma movement at 5–7 km depth but did not reach the surface. Strong geothermal activity at Ölkelduháls and Bitra. No known Holocene eruptions. (overview — more at vedur.is) · circle on the map = rough outline of the system (radius).

In the last 24 hours, seven earthquakes were recorded in the Hrómundartindur system, a small volcanic system east of Hengill, with activity now increasing and slightly higher than usual for this area. The increase is characterized by distributed background activity rather than swarms and most closely resembles the period around January 20, 2025. The largest earthquake in the last 48 hours was M1.2 and the cumulative magnitude is Mw 1.4. Results are automatic preliminary results and further information can be found below on the page.

In the last 24 hours, eight earthquakes were recorded in the Hrómundartindur system, a small volcanic system east of Hengill, indicating an increase from the weekly average although activity remains within normal levels for this area. According to automatic preliminary results, this increase is characterized by distributed background activity rather than swarms, with the largest earthquake in the last 48 hours being magnitude M1.2 and a cumulative moment of Mw 1.4. Activity most closely resembles the period around January 20, 2025, but these are automatic preliminary results and depth data is unreliable.

Over the last 24 hours, seismic activity in Hrómundartindur, a small volcanic system east of Hengill with strong geothermal activity at Ölkelduháls and Bitra, has been increasing and is somewhat higher than usual for this area. There were 8 earthquakes detected in the last 24 hours, which is well above the weekly average, with the largest earthquake measuring magnitude 2.5 (M2.5) and a cumulative moment magnitude (Mw) of 2.5 over the last two days. This represents scattered background activity rather than swarms, as 74% of events over the last seven days were independent, and the activity most closely resembles the period around May 16, 2026. Please note that these are automatic preliminary results where depth is unreliable, but further data and maps can be found lower on the page.

Over the last 24 hours, 13 earthquakes were detected in Hrómundartindur, a small volcanic system east of Hengill, which represents somewhat more activity than usual for this area where the average is typically 0.6 earthquakes per day. This increase is characterized by scattered background activity rather than short-lived swarms and most closely resembles the period around May 16, 2026, when 15 earthquakes were recorded. The largest earthquake in the last 48 hours was magnitude M2.5, with a cumulative moment magnitude of Mw 2.5. Please note that these are automatic preliminary results with unreliable depths, but more detailed data and maps can be found further down the page.

Over the last 24 hours, seismic activity in the Hrómundartindur volcanic system has been increasing and is somewhat higher than usual for this area, which is a small volcanic system east of Hengill with strong geothermal activity at Ölkelduháls and Bitra. A total of 9 earthquakes were detected during the last 24 hours, which is well above the weekly average, with the largest earthquake measuring magnitude 2.5 (M2.5) and the cumulative moment magnitude of the last 48 hours reaching 2.5 (Mw). This represents scattered background activity rather than swarms, as 75% of the events over the last seven days were independent, and the activity most closely resembles the period around May 16, 2026, when 15 earthquakes were recorded. Please note that these are automatic preliminary results where depth is unreliable, but further data and maps can be found lower on the page.

Over the last 24 hours, seismic activity in Hrómundartindur, a small volcanic system east of Hengill with strong geothermal activity, has been increasing and is somewhat higher than usual for this area. A total of 6 earthquakes were detected in the last 24 hours, which is well above the weekly rate, and the largest earthquake in the last 48 hours was magnitude 2.5 (M2.5) with a cumulative moment magnitude of 2.5 (Mw) during the same period. This represents scattered background activity rather than earthquake swarms, closely resembling the period around May 16, 2026, although these are automatic preliminary results where depth is unreliable. Maps and further details on the development of the activity are available below.

Over the last 24 hours, 4 earthquakes were detected in Hrómundartindur, a small volcanic system east of Hengill, indicating that activity is increasing compared to the average of recent weeks. This seismic activity is, however, within what is considered normal for this area and consists mostly of scattered background activity rather than swarms, with the largest earthquake measuring magnitude 1.6 and the cumulative magnitude over the last 48 hours being 1.8. This increase most closely resembles the period around 20 May 2026 as a historical analogue, but all results are automatic preliminary findings where depth is unreliable. Maps and further data on the development can be found below on this page.

In the last 24 hours, four earthquakes were recorded in the Hrómundartindur system, indicating slightly higher activity than usual for this area with the increase consisting mostly of short-lived swarms. Activity is similar to the past week, while the largest earthquake in the last 48 hours was magnitude M0.9 and the cumulative moment for the period is Mw 1.2. These are automatic preliminary results and the activity most resembles the period around February 20, 2026; further details are available below.

In the last 24 hours, 15 earthquakes were recorded in the Hrómundartindur system, indicating slightly higher activity than usual for this area and an increase from previous days. The increase is mostly due to short-lived swarms rather than distributed background activity, with the largest event at M1.4 and a cumulative magnitude of Mw 1.5 over the past 48 hours. These automatic preliminary results most closely resemble the period around February 20, 2026, in terms of event count. Further charts and maps are available below.

In the last 24 hours, 11 earthquakes were recorded in the Hrómundartindur system, indicating slightly higher activity than usual for this area and an increase from previous days. The increase is mostly due to short-lived swarms rather than distributed background activity, with the largest event at M1.4 and a cumulative magnitude of Mw 1.5 over the past 48 hours. These automatic preliminary results most closely resemble the period around February 20, 2026, and further details on trends are available below.

In the last 24 hours, nine earthquakes were recorded in the Hrómundartindur system, a small volcanic system east of Hengill, where activity is increasing but remains normal for this area. The increase is mainly due to short-lived swarms rather than distributed background activity and most closely resembles the period around February 20, 2026. The largest earthquake in the last 48 hours was M1.4 with a cumulative magnitude of Mw 1.5, though these figures are automatic preliminary results. Further details on trends and maps can be found lower on the page.

In the last 24 hours, 13 earthquakes were recorded in the Hrómundartindur system, indicating slightly higher activity than usual for this area and marking an increase from previous days. The increase is mostly due to short-lived swarms rather than distributed background activity, with the largest earthquake in the last 48 hours being magnitude M1.1 and a cumulative moment of Mw 1.3. These automatic preliminary results most closely resemble the period around May 28, 2025, while further data on trends and land uplift are available below.

In the last 24 hours, 14 earthquakes were recorded in the Hrómundartindur system, a small volcanic system east of Hengill, where activity is now increasing and slightly higher than usual for this area. The increase is mostly due to short-lived swarms rather than distributed background activity, with a b-value of 3.9 and a cumulative magnitude of Mw 1.3 over the past 48 hours. This automatic preliminary result most closely resembles the period around May 28, 2025, in terms of event count. Further charts and maps are available below.

In the last 24 hours, 13 earthquakes were recorded in the Hrómundartindur system, indicating slightly higher activity than usual for this area and an increase from previous days. The increase is mostly due to short-lived swarms rather than distributed background activity, with the largest event at M1.1 and a cumulative magnitude of Mw 1.3. These automatic preliminary results most closely resemble the period around January 20, 2025, and further data on trends and land uplift are available below.

In the last 24 hours, 10 earthquakes were recorded in the Hrómundartindur system, indicating slightly higher activity than usual for this area with the increase consisting mostly of short-lived swarms. Activity is increasing compared to the weekly average and resembles the period around January 20, 2025, while the largest earthquake in the last 48 hours was M1.1 with a cumulative magnitude of Mw 1.3. These figures are automatic preliminary results, and further details on trends can be found lower on the page.

In the last 24 hours, nine earthquakes were recorded in the Hrómundartindur system, indicating higher than usual activity for this area and an increase from previous days. The increase is primarily due to short-lived swarms rather than distributed background activity, with the largest event at M1.1 and a cumulative magnitude of Mw 1.3 over the past 48 hours. These automatic preliminary results most closely resemble the period around February 19, 2026, and further details on trends are available below.

In the last 24 hours, eight earthquakes were recorded in the Hrómundartindur system, indicating slightly higher activity than usual for this area with an increase consisting mostly of short-lived swarms. The largest earthquake was magnitude M1.1 and the cumulative moment over the past 48 hours was Mw 1.3, with current conditions resembling the period around February 21, 2026. These figures are automatic preliminary results, and further details can be found below on the page.

In the last 24 hours, five earthquakes were recorded in the Hrómundartindur system, a small volcanic system east of Hengill, where activity is now increasing and slightly higher than usual for this area. The increase is mostly due to short-lived swarms rather than distributed background activity, with the largest earthquake at M1.1 and a cumulative magnitude of Mw 1.2. These automatic preliminary results most closely resemble the period around February 18, 2026, and further details on trends are available below.