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Moderate mag. 4.9 earthquake - 6.3 mi west of Poway, San Diego County, California, USA, on Tuesday, Nov 23, 2021 at 8:37 pm (GMT -8) -

Moderate mag. 4.9 earthquake - 6.3 mi west of Poway, San Diego County, California, USA, on Tuesday, Nov 23, 2021 at 8:37 pm (GMT -8) Moderate mag. 4.9 earthquake - 6.3 mi west of Poway, San Diego County, California, USA, on Tuesday, Nov 23, 2021 at 8:37 pm (GMT -8)

Moderate magnitude 4.9 earthquake at 1 km depth

24 Nov 15:46 UTC: First to report: USGS after 11 hours.

Earthquake details

Date & timeNov 24, 2021 04:37:21 UTC -
Local time at epicenterTuesday, Nov 23, 2021 at 8:37 pm (GMT -8)
StatusConfirmed
Magnitude4.9
Depth1.3 km
Epicenter latitude / longitude32.94483°N / 117.14183°W (San Diego, California, United States)
Antipode32.945°S / 62.858°E
Shaking intensityStrong shaking near epicenter
Felt1 report
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoSalton Buttes (145 km / 90 mi)
Nearby towns and cities10 km (6 mi) WSW of Poway (pop: 50,200) | Show on map | Quakes nearby
17 km (11 mi) SE of Encinitas (pop: 62,900) | Show on map | Quakes nearby
20 km (12 mi) NW of Santee (pop: 57,800) | Show on map | Quakes nearby
20 km (12 mi) SSW of Escondido (pop: 151,500) | Show on map | Quakes nearby
22 km (14 mi) S of San Marcos (pop: 92,900) | Show on map | Quakes nearby
24 km (15 mi) NW of El Cajon (pop: 103,700) | Show on map | Quakes nearby
26 km (16 mi) N of San Diego (pop: 1,394,900) | Show on map | Quakes nearby
740 km (460 mi) SE of Sacramento (pop: 490,700) | Show on map | Quakes nearby
Estimated seismic energy released1.4 x 1012 joules (392 megawatt hours, equivalent to 338 tons of TNT) | 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
4.91.3 km10km WSW of Poway, CAUSGS
4.91.3 kmCalif.-Baja Calif. Border RegionRaspberryShake

Seismograms

Seismic station: Barrett (BAR/CI network) | Distance from quake: 53 km / 33 mi | Show on map | Station Info
Seismic station Barrett: 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. Bandpass filter applied: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (11)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Solana Beach, CA. / not felt : This is surely some kind of error. I was sitting home alone, and I surely would have felt something, 8 miles from the epicenter of a 4.9 quake! | 3 users found this interesting.  
Del Mar (11.3 km W of epicenter) [Map] / not felt : Nothing | One user found this interesting.  
Costa Mesa, ca / not felt : Nothing | One user found this interesting. (reported through our app)  
Murphys / not felt : I felt a quake a little after 9 am | One user found this interesting.  
Phoenix, Arizona 85035 / not felt : Didn't feel a thing... | One user found this interesting. (reported through our app)  
San Diego / not felt : We felt nothing. We only got the alert a few minutes ago got this quake! | One user found this interesting.  
Canoga Park, Los Angeles, California (194.7 km NW of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Ramona ,ca / not felt
4S ranch/del Sur / not felt
Watching TV / not felt
San Diego / not felt

Earlier earthquakes in the same area

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