QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Crescent City, CA

USGS: 7 km NNW of Crescent City, California

11:03 pm PDT, Apr 9, 2020 · · 36 km deep · released about 69 lb of TNT

Every earthquake near Crescent City Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Del Norte County 21 kmCurry County 72 kmJosephine County 83 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
11:03 pm PDT on 9 April 2020 ()
Where
7 km (4 mi) N of Crescent City, CA · earthquakes near Crescent City
Magnitude
M 2.2 (ml)
Depth
36 km below the surface
Felt
no reports yet
Nearest
Del Norte County, 21 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2366 days ago

A magnitude 2.2 earthquake was recorded 7 km (4 mi) N of Crescent City, CA, at 11:03 pm PDT on 9 April 2020 (06:03 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Fort Dick, Bertsch-Oceanview, Harbor, Brookings.

How big was it?

This earthquake released about 69 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 220,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 69 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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

  1. 5.9 5 km NNE of Hiouchi, California · 14 km E 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 41.8182, -124.2183. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Del Norte County, CA 21 km (13 mi) ESE earthquakes near Del Norte County
Curry County, OR 72 km (45 mi) N earthquakes near Curry County
Josephine County, OR 83 km (51 mi) NE earthquakes near Josephine County

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

Aftershocks so far

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

  1. 1.8 15 km SSW of Pistol River, Oregon
  2. 1.9 7 km NE of Harbor, Oregon
  3. 1.8 13 km NNW of Brookings, Oregon
  4. 1.6 15 km SW of Pistol River, Oregon
  5. 2.4 14 km SSW of Crescent City, CA
  6. 1.8 12 km SSW of Brookings, Oregon
  7. 2.5 14 km SSW of Bertsch-Oceanview, CA
  8. 1.9 12 km WSW of Smith River, California
  9. 2.7 13 km SSW of Bertsch-Oceanview, CA
  10. 2.6 18 km SSW of Brookings, OR
  11. 2.2 6 km W of Klamath, CA
  12. 2.2 9 km S of Pistol River, Oregon
  13. 1.8 5 km SW of Brookings, Oregon
  14. 1.6 16 km SW of Pistol River, Oregon
  15. 1.8 9 km SE of Pistol River, Oregon

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.