Earthquake near Funny River, AK

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 78 km (48 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.

Likely felt in: Sterling 5 km, intensity II · Soldotna 15 km, intensity II · Kenai 27 km, intensity II · Kalifornsky 29 km, intensity II · Nikiski 36 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 11 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.9 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 16,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 710× the energy of this one
3. Magna, Utah 2020 M 5.7 500× the energy of this one
4. This earthquake M 3.9 about 11 tons of TNT
5. Around the size people start to feel M 3.0 this one released 22× more

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

The largest earthquake within 50 km since 2016 was M 4.7 on 2019-07-03 — about 16 times the energy of this one.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

1. 6.8 24 km ENE of Sterling, Alaska · 28 km NE of this epicentre Oct 3, 1954
2. 6.7 6 km WNW of Nikiski, Alaska · 42 km NW of this epicentre Jun 18, 1934
3. 6.4 19 km SSE of Tyonek, Alaska · 48 km NNW of this epicentre Jul 30, 1941
4. 6.0 31 km S of Funny River, Alaska · 30 km SSE of this epicentre Oct 24, 1937
5. 5.4 19 km NE of Nikiski, Alaska · 39 km NNW of this epicentre Apr 25, 1994

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 60.4891, -150.7798. Map © OpenStreetMap contributors.

Nearby places

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

1. 1.6 18 km SSE of Funny River, Alaska 16:49 UTC
2. 1.7 9 km SSE of Point Possession, Alaska 09:08 UTC
3. 1.8 9 km WSW of Point Possession, Alaska 19:35 UTC
4. 2.1 16 km SE of Clam Gulch, Alaska 21:42 UTC
5. 1.5 19 km ESE of Kasilof, Alaska 09:37 UTC
6. 1.5 22 km ENE of Sterling, Alaska 05:21 UTC
7. 1.9 5 km NNW of Sterling, Alaska 18:37 UTC
8. 2.1 2 km WSW of Sterling, Alaska 13:35 UTC
9. 1.7 0 km N of Funny River, Alaska 04:41 UTC
10. 2.1 14 km E of Nikiski, Alaska 14:25 UTC
11. 1.5 15 km E of Nikiski, Alaska 17:15 UTC
12. 1.5 5 km NNW of Ridgeway, Alaska 18:45 UTC
13. 1.6 13 km S of Funny River, Alaska 05:58 UTC
14. 2.6 14 km SW of Point Possession, Alaska 05:03 UTC
15. 2.5 14 km ESE of Point Possession, Alaska 14:52 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 03:48 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.