63 km SSW of Chenega, Alaska

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 11 km (7 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
3. Around the size people start to feel M 3.0 130× the energy of this one
4. This earthquake M 1.6 about 7.6 lb of TNT

Energy from the Gutenberg–Richter relation (log₁₀E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 8 earthquakes of M5 or more within 50 km; the five largest:

1. 6.5 92 km SSE of Lowell Point, Alaska · 30 km SSW of this epicentre Jan 12, 1946
2. 6.3 37 km SSE of Lowell Point, Alaska · 41 km WNW of this epicentre Mar 28, 1964
3. 6.1 25 km WSW of Chenega, Alaska · 47 km N of this epicentre Mar 28, 1964
4. 6.0 54 km SE of Lowell Point, Alaska · 20 km NW of this epicentre Mar 28, 1964
5. 5.9 33 km SSE of Lowell Point, Alaska · 42 km NW of this epicentre Mar 29, 1964

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 59.5746, -148.5837. Map © OpenStreetMap contributors.

Aftershocks so far

55 earthquakes have been recorded within 50 km since this one.

1. 1.5 44 km SE of Lowell Point, Alaska 06:51 UTC
2. 2.2 27 km SW of Chenega, Alaska 11:56 UTC
3. 2.1 25 km SE of Lowell Point, Alaska 17:16 UTC
4. 1.8 31 km SSW of Chenega, Alaska 03:32 UTC
5. 2.2 61 km SSE of Lowell Point, Alaska 05:31 UTC
6. 1.6 35 km ESE of Lowell Point, Alaska 02:37 UTC
7. 2.1 36 km S of Chenega, Alaska 15:00 UTC
8. 2.0 39 km WSW of Chenega, Alaska 06:22 UTC
9. 2.2 32 km ESE of Lowell Point, Alaska 07:52 UTC
10. 2.3 31 km S of Chenega, Alaska 01:11 UTC
11. 2.3 39 km SSW of Chenega, Alaska 16:42 UTC
12. 1.7 31 km SE of Lowell Point, Alaska 18:13 UTC
13. 2.3 44 km S of Chenega, Alaska 16:15 UTC
14. 2.2 27 km WSW of Chenega, Alaska 16:06 UTC
15. 2.1 25 km SSW of Chenega, Alaska 08:34 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 23:40 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

• The official USGS event page — the source of record for every value above
• Did you feel it? Report it to USGS — reports go to USGS, not to us
• ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.