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Minor mag. 1.9 earthquake - 11km NNE of Lewiston, CA, on Sunday, Aug 14, 2022 at 10:35 pm (GMT -7) -

Minor mag. 1.9 earthquake - 11km NNE of Lewiston, CA, on Sunday, Aug 14, 2022 at 10:35 pm (GMT -7) Minor mag. 1.9 earthquake - 11km NNE of Lewiston, CA, on Sunday, Aug 14, 2022 at 10:35 pm (GMT -7)

Minor magnitude 1.9 earthquake at 9 km depth

15 Aug 05:38 UTC: First to report: EMSC after 2 minutes.
15 Aug 05:38: Now using data updates from USGS
15 Aug 16:34: Magnitude recalculated from 2.2 to 1.9. Hypocenter depth recalculated from 16.9 to 9.3 km (from 10.5 to 5.8 mi). Epicenter location corrected by 1 km (0.6 mi) towards ESE.

Earthquake details

Date & timeAug 15, 2022 05:35:53 UTC -
Local time at epicenterSunday, Aug 14, 2022 at 10:35 pm (GMT -7)
StatusConfirmed
Magnitude1.9
Depth9.3 km
Epicenter latitude / longitude40.79883°N / 122.76317°W (California, United States)
Antipode40.799°S / 57.237°E
Shaking intensityVery weak shaking
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoMount Shasta (83 km / 52 mi)
Nearby towns and cities11 km (7 mi) NNE of Leviston (pop: 1,190) | Show on map | Quakes nearby
17 km (10 mi) ENE of Weaverville (pop: 3,600) | Show on map | Quakes nearby
36 km (22 mi) WNW of Lake Shasta (Shasta County) (pop: 10,200) | Show on map | Quakes nearby
36 km (22 mi) WNW of Lake Shasta (pop: 10,200) | Show on map | Quakes nearby
39 km (24 mi) NW of Redding (pop: 91,600) | Show on map | Quakes nearby
45 km (28 mi) NE of Hayfork (pop: 2,370) | Show on map | Quakes nearby
55 km (34 mi) NW of Anderson (Shasta County) (pop: 10,200) | Show on map | Quakes nearby
82 km (51 mi) NNW of Red Bluff (Tehama County) (pop: 14,100) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 19.3°C (67 F), humidity: 57%, wind: 2 m/s (4 kts) from WNW
Estimated seismic energy released4.5 x 107 joules (12.4 kilowatt hours) | about seismic energy
Show interactive Map
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
1.99.3 km11km NNE of Lewiston, CAUSGS
2.217 kmNORTHERN CALIFORNIAEMSC
1.99.3 kmNorthern CaliforniaRaspberryShake

Seismograms

Seismic station: Crater Lake Bunk House (CLBH/CC network) | Distance from quake: 240 km / 149 mi | Show on map | Station Info
Seismic station Crater Lake Bunk House: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake

At magnitude 1.9, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.

Earlier earthquakes in the same area

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