139 km WSW of Pistol River, Oregon

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

How big was it?

This earthquake released about 5.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 32,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 1,400× the energy of this one
3. Magna, Utah 2020 M 5.7 1,000× the energy of this one
4. This earthquake M 3.7 about 5.4 tons of TNT
5. Around the size people start to feel M 3.0 this one released 11× 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.

Where

Epicentre 41.8390, -125.9796. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 2.6 155 km WSW of Pistol River, Oregon 12:33 UTC
2. 2.3 136 km WSW of Pistol River, Oregon 13:19 UTC
3. 5.1 169 km WSW of Pistol River, Oregon 03:04 UTC
4. 3.1 137 km W of Pistol River, Oregon 12:49 UTC
5. 2.0 112 km WSW of Pistol River, Oregon 19:56 UTC
6. 2.1 118 km WSW of Crescent City, California 07:49 UTC
7. 2.5 135 km WSW of Pistol River, Oregon 20:25 UTC
8. 2.5 145 km WSW of Pistol River, Oregon 21:34 UTC
9. 2.7 176 km W of Crescent City, California 05:53 UTC
10. 2.5 116 km WSW of Pistol River, Oregon 05:42 UTC
11. 1.9 107 km W of Crescent City, California 15:08 UTC
12. 3.1 120 km WSW of Gold Beach, OR 12:07 UTC
13. 4.0 139 km WSW of Pistol River, Oregon 00:13 UTC
14. 2.8 112 km W of Crescent City, CA 20:19 UTC
15. 2.8 146 km W of Pistol River, Oregon 04:30 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 19:04 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 5.2 on 2019-10-28 — it released about 200 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

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.