Reviewed by USGSAlaska3mo ago
M2.5 earthquake 94 km S of False Pass, Alaska
Saturday, June 20, 2026, 22:35:17 UTC · 54.011°N, 163.610°W
A magnitude 2.5 earthquake struck 94 km S of False Pass, Alaska on Saturday, June 20, 2026, 22:35:17 UTC, at a depth of 24.9 km (shallow).
- Magnitude
- 2.5
- Minor · ml
- Depth
- 25 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeDashed circle: 50 km aftershock search area
In context
How big was it, and why here?
Energy released
85 kg of TNT
That is about 1/177,558 of the Hiroshima bomb. A magnitude 5.0 releases about 5,623 times more energy.
Tectonic setting
96 km
from the nearest mapped plate boundary, between the North American and Pacific plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
25 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 50 km
USGS lists 14 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M3.1 on July 12, 2026. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 2.5118 km ESE of Akutan, Alaska2mo ago · 40 km SW of this epicenter
- 2.6126 km S of False Pass, Alaska2mo ago · 38 km SE of this epicenter
- 2.5124 km S of False Pass, Alaska2mo ago · 33 km SE of this epicenter
- 2.5112 km SSW of False Pass, Alaska2mo ago · 23 km SW of this epicenter
- 2.8114 km SSW of False Pass, Alaska2mo ago · 23 km SW of this epicenter
- 3.1117 km ESE of Akutan, Alaska2mo ago · 41 km SW of this epicenter
- 2.684 km S of False Pass, Alaska2mo ago · 21 km NE of this epicenter
- 2.664 km SSW of False Pass, Alaska2mo ago · 34 km N of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 490 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.6The 1946 Unimak Island, Alaska EarthquakeApril 1, 1946 · 77 km SE of this epicenter
- 7.881 km E of Nikolski, AlaskaJuly 2, 1965 · 290 km W of this epicenter
- 7.62020 Sand Point, Alaska EarthquakeOctober 19, 2020 · 267 km E of this epicenter
- 7.454 km SE of Sand Point, AlaskaMay 31, 1917 · 264 km NE of this epicenter
- 7.32025 Sand Point, Alaska EarthquakeJuly 16, 2025 · 213 km E of this epicenter
- 7.22023 Sand Point, Alaska EarthquakeJuly 16, 2023 · 190 km E of this epicenter
- 7.190 km SE of King Cove, AlaskaMay 14, 1948 · 172 km NE of this epicenter
- 7.139 km S of Akutan, AlaskaMarch 22, 1957 · 144 km W of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 11 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 169 recorded deaths. The most severe:
- 1946M8.6
Unimak Island
1 Apr 1946 · 77 km away · intensity VI
168 deaths$26 million damagetsunami
- 2023M7.2
Alaska Peninsula
16 Jul 2023 · 192 km away · intensity VI
1 deathtsunami
- 1965M6.5
Aleutian Islands: Fox Islands
2 Jul 1965 · 282 km away
Limited damage (under $1M)tsunami
- 1788M8.0
Alaska Peninsula
6 Aug 1788 · 201 km away
tsunami
- 2020M7.6
Alaska
19 Oct 2020 · 267 km away · intensity IX
tsunami
- 1948M7.5
Alaska Peninsula
14 May 1948 · 178 km away
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.