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Light mag. 2.9 earthquake - 1 mi north of San Fernando, Los Angeles County, California, USA, on Tuesday, Sep 14, 2021 at 5:57 pm (GMT -7)

Light mag. 2.9 earthquake - 1 mi north of San Fernando, Los Angeles County, California, USA, on Tuesday, Sep 14, 2021 at 5:57 pm (GMT -7) Light mag. 2.9 earthquake - 1 mi north of San Fernando, Los Angeles County, California, USA, on Tuesday, Sep 14, 2021 at 5:57 pm (GMT -7)

Light magnitude 2.9 earthquake at 7 km depth

15 Sep 01:00 UTC: First to report: USGS after 3 minutes.
15 Sep 16:30: Magnitude recalculated from 3.0 to 2.9. Hypocenter depth recalculated from 6.1 to 7.4 km (from 3.8 to 4.6 mi). Epicenter location corrected by 0.5 km (0.3 mi) towards W.
Update Wed, 15 Sep 2021, 01:06

Magnitude 3.0 earthquake strikes near Van Nuys, Los Angeles County, California, USA

3.0 quake 14 Sep 5:57 pm (GMT -7)
3.0 quake 14 Sep 5:57 pm (GMT -7)
Just 8 minutes ago, a 3.0-magnitude earthquake struck near Van Nuys, Los Angeles County, California, USA. The tremor was recorded in the afternoon on Tuesday, September 14th, 2021, at 5:57 pm local time, at a very shallow depth of 3.8 miles below the surface.
The event was filed by the United States Geological Survey, the first seismological agency to report it.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.0 as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in San Fernando (pop. 24,900) located 1 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Valley Glen (pop. 60,000) located 8 miles from the epicenter, Van Nuys (pop. 136,400) 8 miles away, Northridge (pop. 68,500) 8 miles away, North Hollywood (pop. 77,800) 9 miles away, Santa Clarita (pop. 182,400) 9 miles away, Burbank (pop. 105,300) 11 miles away, and Universal City (pop. 105,000) 12 miles away. In Los Angeles (pop. 3,971,900, 20 miles away), the quake was probably not felt.

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Earthquake details

Date & timeSep 15, 2021 00:57:35 UTC
Local time at epicenterTuesday, Sep 14, 2021 at 5:57 pm (GMT -7)
StatusConfirmed
Magnitude2.9
Depth7.4 km
Epicenter latitude / longitude34.2965°N / 118.43417°W (Los Angeles, California, United States)
Antipode34.297°S / 61.566°E
Shaking intensityWeak shaking
Felt18 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoLavic Lake (173 km / 107 mi)
Nearby towns and cities2 km (1 mi) NNE of San Fernando (Los Angeles County) (pop: 24,900) | Show on map | Quakes nearby
15 km (9 mi) SE of Santa Clarita (pop: 182,400) | Show on map | Quakes nearby
17 km (11 mi) NW of Burbank (pop: 105,300) | Show on map | Quakes nearby
32 km (20 mi) NNW of Los Angeles (pop: 3,971,900) | Show on map | Quakes nearby
550 km (341 mi) SSE of Sacramento (pop: 490,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 25.6°C (78 F), humidity: 32%, wind: 0 m/s (1 kts) from S
Estimated seismic energy released1.4 x 109 joules (392 kilowatt hours, equivalent to 0.338 tons of TNT) | about seismic energy
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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
2.97.4 km2km NE of San Fernando, CAUSGS
2.715 kmGREATER LOS ANGELES AREA, CALIF.EMSC

Seismograms

Seismic station: Green Verdugo Site (DEC/CI network) | Distance from quake: 10 km / 6 mi | Show on map | Station Info
Seismic station Green Verdugo Site: 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: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (19)

At magnitude 2.9, this quake might have been felt very close to the epicenter and under calm conditions.
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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NORTH HOLLYWOOD / Very weak shaking (MMI II) / single lateral shake / very short : It just felt like one jolt from west to east. I'm leaning against my car in the ground-level garage area and my car, the ground, and my cart in front of me all jolted in the same direction and the metal railings on the cart rattled just once and that was | 3 users found this interesting.  
Sylmar CA / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : noise from my shutters behind me, then movement on the floor by my feet, then the couch shook. | 2 users found this interesting.  
91411 / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : Short horizontal shaking | 2 users found this interesting.  
Granada Hills / Light shaking (MMI IV) / single vertical bump / 2-5 s : I’m recovering from my heart surgery, so , I’m in bed, and I felt like somebody push the wall and move the bed, that was all | 2 users found this interesting.  
North Hollywood / Weak shaking (MMI III) : Mild shaking for a few seconds | 2 users found this interesting.  
North Hills, CA (8 km SSW of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / 2-5 s : I heard a strong noise on the wall, and them the shacking | One user found this interesting.  
Northridge, CA / Weak shaking (MMI III) / single vertical bump / very short : It was a quick jolt. | One user found this interesting.  
Pacoima / Very weak shaking (MMI II) / 1-2 s : Small bump movement | One user found this interesting. (reported through our app)  
Van Nuys, CA / Light shaking (MMI IV) / single lateral shake / 1-2 s : A quick jolt with a rattle.  
Panorama City / Weak shaking (MMI III) / single vertical bump / 1-2 s : Lil movement not to mucj  
Van Nuys / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s
Santa Clarita CA (22.8 km NW of epicenter) [Map] / not felt : Nothing felt on the Castaic/Santa Clarita line  
Arleta / Weak shaking (MMI III) / rattling, vibrating / very short
Studio City / Very weak shaking (MMI II) / single lateral shake / 15-20 s
Porter Ranch / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Northridge / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Pacoima ca / Weak shaking (MMI III) / single lateral shake / 1-2 s
Northridge / Weak shaking (MMI III) / rattling, vibrating / 1-2 s (reported through our app)
pacoima (3.8 km S of epicenter) [Map] / Weak shaking (MMI III)

Earlier earthquakes in the same area

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