QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near McKinleyville, CA

No earthquake was likely felt in McKinleyville in the 24 hours to 6:29 am PST (14:29 UTC). The last one was M 5.0, 139 km (86 mi) WSW, at 8:56 pm PST on 4 November 2026, estimated intensity II (weak) in town; 145 felt reports to USGS. Every earthquake near McKinleyville

This page: a magnitude 2.5 earthquake was recorded 41 km (25 mi) east-northeast of McKinleyville, CA, at 1:09 pm PDT on 2 May 2022 (20:09 UTC), 29 km deep.

USGS: 5km SSE of Weitchpec, CA

1:09 pm PDT, May 2, 2022 · · 29 km deep · released about 150 lb of TNT

10 km30 km60 km120 km N Humboldt County 52 kmDel Norte County 72 kmTrinity County 73 kmSiskiyou County 109 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
1:09 pm PDT on 2 May 2022 ()
Where
41 km (25 mi) east-northeast of McKinleyville, CA · earthquakes near McKinleyville
Magnitude
M 2.5 (md)
Depth
29 km below the surface
Felt
no reports yet
Nearest
Humboldt County, 52 km SSW
Nearest mapped fault
Bald Mountain-Big Lagoon fault, 24 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1587 days ago

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 McKinleyville, 41 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.

Earthquakes near other towns within 30 km: Willow Creek.

How big was it?

This earthquake released about 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 72,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.5× the energy of this one
  4. This earthquake M 2.5 about 150 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 4.8 on 2016-07-21 — about 3,300 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.2 The 1980 Eureka, California Earthquake · 47 km W of this epicentre
  2. 6.4 The 1954 Eureka-Arcata, California Earthquake · 37 km SSW of this epicentre
  3. 5.8 Near Eureka, California · 46 km SW of this epicentre
  4. 5.6 15 km SW of Burnt Ranch, California · 48 km S of this epicentre
  5. 5.6 26 km NNW of Willow Creek, California · 8 km W 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 41.1412, -123.6905. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Humboldt County, CA 52 km (32 mi) SSW earthquakes near Humboldt County
Del Norte County, CA 72 km (45 mi) NNW earthquakes near Del Norte County
Trinity County, CA 73 km (45 mi) SE earthquakes near Trinity County
Siskiyou County, CA 109 km (67 mi) ENE earthquakes near Siskiyou County

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

Aftershocks so far

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

  1. 2.8 1 km SSE of Arcata, CA
  2. 2.2 32 km ENE of Willow Creek, CA
  3. 2.3 17 km NE of Willow Creek, CA
  4. 2.1 18 km WNW of Willow Creek, CA
  5. 2.4 14 km SE of Weitchpec, CA
  6. 2.0 13 km SSE of Willow Creek, CA
  7. 2.5 22km S of Klamath, CA
  8. 2.8 10km S of Somes Bar, CA
  9. 2.0 15km SE of Blue Lake, CA
  10. 2.1 18km S of Willow Creek, CA
  11. 2.5 17km SSE of Somes Bar, CA
  12. 2.1 8km ENE of Blue Lake, CA
  13. 2.8 17km NNW of Trinidad, CA
  14. 2.2 22km SE of Willow Creek, CA
  15. 2.5 8km W of Willow Creek, 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.