Earthquakes in Anchorage, Alaska
Last earthquake: 1 hour ago · 375 in past 30 days · Largest: M3.4 · Population 291K
Last updated: August 8, 2026 at 06:58 PM UTC · Data: USGS Earthquake Hazards Program
No significant earthquakes recorded near Anchorage recently. Last M2.5+: 2 days ago.
Quick Facts — Earthquakes in Anchorage
- Population
- 291K
- Seismic activity level
- very high
- Nearest major fault
- Castle Mountain Fault (50 km)
- Largest recorded nearby
- M9.2 (1964 Great Alaska earthquake)
- 30-year probability M6.7+
- 90% (NSHM)
- Earthquakes past 30 days
- 375
- Last significant (M2.5+)
- 2 days ago
- 2026 total (M1.0+)
- 3209
Anchorage experienced a magnitude 3.1 earthquake 2 days ago 36 km WSW of Skwentna, Alaska, at a depth of 122.0 km. Over the past 7 days, 59 earthquakes (M1.0+) have been recorded within 150 km.
Anchorage sits in the very high category for U.S. seismic activity. The largest earthquake in or near Anchorage since records began was the magnitude 9.2 1964 Great Alaska earthquake, which struck approximately 120 km east of the city.
According to the U.S. Geological Survey's National Seismic Hazard Model, there is approximately a 90% probability of a magnitude 6.7 or greater earthquake within 100 km of Anchorage in the next 30 years, and a 60% probability of a magnitude 7.0 or greater event. The largest credible earthquake predicted for the Anchorage area is a magnitude 7.5 event on the Castle Mountain Fault, which lies 50 km from downtown Anchorage. Source: USGS Alaska Earthquake Center; USGS NSHM 2023
Anchorage sits in a region characterized by Pacific Plate subduction beneath the North American Plate, producing frequent megathrust and crustal earthquakes along the Aleutian arc. Beyond the Castle Mountain Fault, secondary fault systems include the Aleutian Subduction Zone and Denali Fault. View all earthquakes in Alaska.
2026 Activity vs Historical Average
Recent Significant Earthquakes Near Anchorage
Earthquake Map — Anchorage Area
Fault Lines Near Anchorage
| Fault Name | Type | Distance | Max Credible Mag | Last Major Rupture |
|---|---|---|---|---|
| Castle Mountain Fault | right-lateral strike-slip | 50 km | M7.5 | 1984 (M5.7) |
| Aleutian Subduction Zone | subduction zone | 80 km | M9.2 | 1964 (M9.2 Great Alaska) |
| Denali Fault | right-lateral strike-slip | 200 km | M8.0 | 2002 (M7.9) |
| Border Ranges Fault | thrust | 30 km | M7.0 | paleoseismic data limited |
Recent Earthquakes (Last 30 Days)
Dataset at a glance — Anchorage
Over the past 30 days, Anchorage has recorded 375 earthquakes of magnitude 2.5 or greater in our tracker. The remaining 30 fell in the M2.5–M3.9 band. By depth: 287 shallow (<70 km), 88 intermediate (70–300 km). 190 of the epicenters were offshore. 92 events produced at least one felt report, totalling 132 citizen submissions to the USGS Did You Feel It? system. Focal depths ranged from 0.0 km to 122.0 km. 356 of the 375 solutions have been reviewed by a USGS seismologist; the remaining 19 are automatic and may be refined.
Each row in the table below includes a narrative summary of the event, ordered by time. Use the column headers to sort or filter by magnitude.
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2 days ago 2026-08-06 09:41:25 UTC | 3.1ml | 36 km WSW of Skwentna, Alaska 61.910°, -152.080° | 122.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 09:41 UTC on August 6, 2026, a magnitude 3.1 tremor occurred 36 km WSW of Skwentna, Alaska. This is the deepest earthquake in the current dataset — an intermediate depth event. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2 days ago 2026-08-06 05:41:36 UTC | 3.1ml | 16 km SSW of Funny River, Alaska 60.357°, -150.834° | 45.9 km | 1 | II | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.1 earthquake 16 km SSW of Funny River, Alaska at 05:41 UTC on August 6, 2026. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2 days ago 2026-08-06 02:16:55 UTC | 2.5ml | 30 km NW of Susitna, Alaska 61.759°, -150.855° | 67.7 km | - | - | - | ✓ Reviewed | USGS → |
August 6, 2026 brought a magnitude 2.5 earthquake 30 km NW of Susitna, Alaska, logged at 02:16 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
4 days ago 2026-08-04 09:45:40 UTC | 3.3ml | 48 km NE of Susitna North, Alaska 62.441°, -149.140° | 60.9 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 earthquake was recorded 48 km NE of Susitna North, Alaska on August 4, 2026 at 09:45 UTC. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
6 days ago 2026-08-02 06:58:29 UTC | 3.4ml | 20 km W of Salamatof, Alaska 60.622°, -151.687° | 79.0 km | 8 | I | - | ✓ Reviewed | USGS → |
On August 2, 2026 at 06:58 UTC, a magnitude 3.4 earthquake struck 20 km W of Salamatof, Alaska. In the 72 hours after this event, the USGS recorded 4 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-01 2026-08-01 18:31:21 UTC | 2.6ml | 18 km SW of Point Possession, Alaska 60.792°, -150.906° | 60.1 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 18 km SW of Point Possession, Alaska at 18:31 UTC on August 1, 2026. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-01 2026-08-01 11:38:21 UTC | 3.0ml | 38 km SSW of Skwentna, Alaska 61.681°, -151.708° | 96.5 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 3.0 event was detected 38 km SSW of Skwentna, Alaska on August 1, 2026, with origin time 11:38 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-31 2026-07-31 16:05:13 UTC | 2.5ml | 7 km W of Funny River, Alaska 60.507°, -150.904° | 2.4 km | 1 | - | - | ✓ Reviewed | USGS → |
On July 31, 2026 at 16:05 UTC, a magnitude 2.5 earthquake struck 7 km W of Funny River, Alaska. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-30 2026-07-30 08:03:22 UTC | 3.2ml | 33 km SSE of Knik River, Alaska 61.168°, -148.737° | 17.0 km | 15 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.2 earthquake 33 km SSE of Knik River, Alaska with origin time 08:03 UTC on July 30, 2026. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-28 2026-07-28 19:24:19 UTC | 2.5ml | 12 km N of Meadow Lakes, Alaska 61.737°, -149.568° | 32.3 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 12 km N of Meadow Lakes, Alaska on July 28, 2026 at 19:24 UTC. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-27 2026-07-27 06:06:50 UTC | 3.0ml | 23 km ESE of Susitna North, Alaska 62.090°, -149.436° | 15.4 km | 8 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 23 km ESE of Susitna North, Alaska came in on July 27, 2026 at 06:06 UTC. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-27 2026-07-27 00:28:59 UTC | 2.5ml | 58 km NNW of Chickaloon, Alaska 62.312°, -148.699° | 18.2 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 58 km NNW of Chickaloon, Alaska with origin time 00:28 UTC on July 27, 2026. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-26 2026-07-26 08:09:55 UTC | 2.5ml | 24 km SW of Susitna, Alaska 61.392°, -150.838° | 62.6 km | 1 | - | - | ✓ Reviewed | USGS → |
On July 26, 2026, Anchorage registered a magnitude 2.5 earthquake 24 km SW of Susitna, Alaska at 08:09 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-25 2026-07-25 17:14:49 UTC | 2.8ml | 16 km E of Willow, Alaska 61.774°, -149.730° | 16.5 km | 1 | - | - | ✓ Reviewed | USGS → |
On July 25, 2026 at 17:14 UTC, a magnitude 2.8 earthquake struck 16 km E of Willow, Alaska. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-23 2026-07-23 13:30:35 UTC | 2.5ml | 7 km NW of Susitna North, Alaska 62.213°, -149.947° | 0.7 km | 2 | - | - | ✓ Reviewed | USGS → |
At 13:30 UTC on July 23, 2026, a magnitude 2.5 tremor occurred 7 km NW of Susitna North, Alaska. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-22 2026-07-22 06:14:22 UTC | 2.8ml | 35 km SW of Skwentna, Alaska 61.749°, -151.839° | 108.5 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 earthquake was recorded 35 km SW of Skwentna, Alaska on July 22, 2026 at 06:14 UTC. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-21 2026-07-21 04:14:43 UTC | 2.9ml | 29 km NW of Cooper Landing, Alaska 60.663°, -150.236° | 52.2 km | 4 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 seismic event took place 29 km NW of Cooper Landing, Alaska on July 21, 2026 at 04:14 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-21 2026-07-21 01:21:24 UTC | 2.9ml | 26 km W of Anchorage, Alaska 61.179°, -150.379° | 5.0 km | 3 | - | - | ✓ Reviewed | USGS → |
July 21, 2026 brought a magnitude 2.9 earthquake 26 km W of Anchorage, Alaska, logged at 01:21 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-20 2026-07-20 15:26:21 UTC | 2.5ml | 18 km WSW of Anchorage, Alaska 61.141°, -150.195° | 47.0 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 18 km WSW of Anchorage, Alaska at 15:26 UTC on July 20, 2026. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-20 2026-07-20 10:49:06 UTC | 2.5ml | 26 km SSE of Chickaloon, Alaska 61.575°, -148.283° | 1.9 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 26 km SSE of Chickaloon, Alaska on July 20, 2026, with origin time 10:49 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-20 2026-07-20 03:56:37 UTC | 3.2ml | 17 km NW of Susitna, Alaska 61.652°, -150.746° | 65.2 km | 3 | II | - | ✓ Reviewed | USGS → |
On July 20, 2026, Anchorage registered a magnitude 3.2 earthquake 17 km NW of Susitna, Alaska at 03:56 UTC. In the 72 hours after this event, the USGS recorded 6 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-20 2026-07-20 00:10:48 UTC | 2.7ml | 59 km S of Glacier View, Alaska 61.273°, -147.701° | 0.3 km | 1 | - | - | ✓ Reviewed | USGS → |
On July 20, 2026, Anchorage registered a magnitude 2.7 earthquake 59 km S of Glacier View, Alaska at 00:10 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-17 2026-07-17 21:52:10 UTC | 2.5ml | 36 km N of Fishhook, Alaska 62.066°, -149.135° | 23.1 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 36 km N of Fishhook, Alaska came in on July 17, 2026 at 21:52 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-17 2026-07-17 17:04:59 UTC | 2.6ml | 4 km SW of Tyonek, Alaska 61.035°, -151.184° | 71.7 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 4 km SW of Tyonek, Alaska on July 17, 2026, with origin time 17:04 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-15 2026-07-15 13:28:27 UTC | 2.6ml | 21 km E of Point Possession, Alaska 60.944°, -150.297° | 58.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 21 km E of Point Possession, Alaska came in on July 15, 2026 at 13:28 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-15 2026-07-15 03:45:48 UTC | 2.8ml | 17 km SSW of Petersville, Alaska 62.356°, -150.936° | 78.5 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 17 km SSW of Petersville, Alaska with origin time 03:45 UTC on July 15, 2026. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-13 2026-07-13 23:08:30 UTC | 2.5ml | 6 km ESE of Sutton-Alpine, Alaska 61.758°, -148.646° | 11.8 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 6 km ESE of Sutton-Alpine, Alaska on July 13, 2026 at 23:08 UTC. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-13 2026-07-13 00:09:01 UTC | 2.6ml | 34 km W of Kalifornsky, Alaska 60.471°, -151.909° | 91.5 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 34 km W of Kalifornsky, Alaska on July 13, 2026 at 00:09 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-12 2026-07-12 11:02:41 UTC | 2.7ml | 29 km SSW of Petersville, Alaska 62.261°, -151.030° | 77.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 11:02 UTC on July 12, 2026, a magnitude 2.7 tremor occurred 29 km SSW of Petersville, Alaska. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-07-11 2026-07-11 20:07:44 UTC | 2.5ml | 7 km E of Sutton-Alpine, Alaska 61.771°, -148.623° | 3.2 km | 2 | - | - | ✓ Reviewed | USGS → |
July 11, 2026 brought a magnitude 2.5 earthquake 7 km E of Sutton-Alpine, Alaska, logged at 20:07 UTC. In the 72 hours after this event, the USGS recorded 6 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
Common Questions About Earthquakes in Anchorage
How often do earthquakes happen in Anchorage?
Anchorage experiences frequent earthquake activity. The area averages 250 earthquakes of magnitude 3.0 or greater per year, with 4 reaching magnitude 5.0 or higher. In the past 30 days, 375 earthquakes (M1.0+) have been recorded within 150 km of the city.
What was the biggest earthquake to hit Anchorage?
The largest earthquake in or near Anchorage since records began was the magnitude 9.2 1964 Great Alaska earthquake in 1964, which struck approximately 120 km east of the city.
What is the earthquake risk in Anchorage?
Earthquakes cannot be predicted with precision. However, the U.S. Geological Survey estimates there is approximately a 90% probability of a magnitude 6.7 or greater earthquake within 100 km of Anchorage in the next 30 years. The most likely source is the Castle Mountain Fault, which has a maximum credible magnitude of 7.5.
What fault lines are near Anchorage?
The Castle Mountain Fault runs approximately 50 km from Anchorage and is the most significant local seismic threat, with a maximum credible magnitude of 7.5. Other nearby faults include the Aleutian Subduction Zone (80 km), the Denali Fault (200 km), the Border Ranges Fault (30 km).
Was there an earthquake in Anchorage today?
No earthquakes of magnitude 2.5 or greater have been recorded near Anchorage in the past 24 hours. The most recent M2.5+ event was 2 days ago.
About This Page
This page is maintained by Earthquake Tracker, an independent seismic activity reporting service. Earthquake data is sourced from the U.S. Geological Survey (USGS) Earthquake Hazards Program and updated every hour. Probability estimates use the USGS National Seismic Hazard Model (NSHM 2023). Historical earthquake data is sourced from the USGS Historical Earthquake Catalog. Fault information comes from the USGS Quaternary Fault and Fold Database and SCEC Community Fault Model.
Last data refresh: August 8, 2026 at 06:58 PM UTC