Earthquake · reviewed by a seismologist
M 2.4md
Earthquake near Crescent City, CA
No earthquake was likely felt in Crescent City in the 24 hours to 11:43 pm PST (07:43 UTC). The last one was M 4.9, 162 km (101 mi) WNW, at 2:55 am PDT on 6 August 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Crescent City
This page: a magnitude 2.4 earthquake was recorded 49 km (30 mi) southeast of Crescent City, CA, at 4:35 pm PDT on 6 August 2026 (23:35 UTC), 28 km deep.
USGS: 20 km SE of Klamath, CA
- When
- 4:35 pm PDT on 6 August 2026 ()
- Where
- 49 km (30 mi) southeast of Crescent City, CA · earthquakes near Crescent City
- Magnitude
- M 2.4 (md)
- Depth
- 28 km below the surface
- Felt
- no reports yet
- Nearest
- Del Norte County, 41 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 86 days ago
Earthquake alerts for Crescent City, CA
Get a notification in this browser when USGS records an earthquake near Crescent City, CA. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. In Crescent City, 49 km away, the estimate is intensity II (weak). 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 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
- Magna, Utah 2020 M 5.7 100,000× the energy of this one
- Around the size people start to feel M 3.0 9.1× the energy of this one
- This earthquake M 2.4 about 100 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
The largest earthquake within 50 km since 2016 was M 4.3 on 2024-01-23 — about 900 times the energy of this one.
Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:
- 7.2 The 1980 Eureka, California Earthquake · 44 km SW of this epicentre
- 5.6 26 km NNW of Willow Creek, California · 28 km SSE of this epicentre
- 5.0 4 km NE of Fieldbrook, California · 45 km SSW of this epicentre
- 5.0 4 km NE of Fieldbrook, California · 45 km SSW of this epicentre
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 41.3912, -123.8703. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Del Norte County, CA | 41 km (25 mi) | NNW | earthquakes near Del Norte County |
| Humboldt County, CA | 76 km (47 mi) | S | earthquakes near Humboldt County |
| Trinity County, CA | 104 km (65 mi) | SE | earthquakes near Trinity County |
| Josephine County, OR | 113 km (70 mi) | NNE | earthquakes near Josephine County |
| Siskiyou County, CA | 113 km (71 mi) | ENE | earthquakes near Siskiyou County |
| Curry County, OR | 123 km (76 mi) | NNW | earthquakes near Curry County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
1 earthquake has been recorded within 50 km since this one.
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . 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.