QuakeIndex

Earthquake · automatic estimate, may change

M 2.4md

Earthquake near Crescent City, CA

No earthquake was likely felt in Crescent City in the 24 hours to 12:17 am PST (08:17 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 13 km (8 mi) south-southeast of Crescent City, CA, at 11:40 am PDT on 2 August 2025 (18:40 UTC), 9.4 km deep. 1 person has reported feeling it to USGS. The magnitude and location are an automatic first estimate and may change.

USGS: 14 km SSW of Crescent City, CA

11:40 am PDT, Aug 2, 2025 · · 9.4 km deep · released about 120 lb of TNT

10 km30 km60 km120 km N Del Norte County 19 kmCurry County 92 kmJosephine County 96 kmHumboldt County 106 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
11:40 am PDT on 2 August 2025 ()
Where
13 km (8 mi) south-southeast of Crescent City, CA · earthquakes near Crescent City
Magnitude
M 2.4 (md)
Depth
9.4 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Del Norte County, 19 km NE
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 435 days ago

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 19 km (12 mi) from the epicentre. In Crescent City, 13 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.

Likely felt in: Crescent City 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 120 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.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 790 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.9 5 km NNE of Hiouchi, California · 24 km NNE 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 41.6412, -124.1618. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Del Norte County, CA 19 km (12 mi) NE earthquakes near Del Norte County
Curry County, OR 92 km (57 mi) N earthquakes near Curry County
Josephine County, OR 96 km (60 mi) NNE earthquakes near Josephine County
Humboldt County, CA 106 km (66 mi) S earthquakes near Humboldt County
Trinity County, CA 141 km (88 mi) SE earthquakes near Trinity County

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

Aftershocks so far

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

  1. 1.7 1 km NW of Brookings, Oregon
  2. 1.5 25 km WNW of Crescent City, California
  3. 2.4 20 km SE of Klamath, CA
  4. 3.2 28 km NW of Trinidad, CA

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

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