Moderate mag. 3.9 earthquake - 17 mi northwest of Brawley, Imperial County, California, USA, on 11 Jun 10:55 pm (GMT -7) -
Moderate magnitude 3.9 earthquake at 3 km depth
12 Jun 05:58 UTC: First to report: EMSC after 3 minutes.
12 Jun 05:58: Now using data updates from USGS
12 Jun 06:01: Magnitude recalculated from 3.6 to 3.9.
Update Sat, 12 Jun 2021, 06:03Small magnitude 3.9 quake hits 17 miles northwest of Brawley, California, United States late at night
3.9 quake 11 Jun 10:55 pm (GMT -7)
A very shallow magnitude 3.9 earthquake was reported late at night near Brawley, Imperial County, California, USA.
According to the United States Geological Survey, the quake hit on Friday 11 June 2021 at 10:55 pm local time at a very shallow depth of 1.7 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.9 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 Imperial Junction (pop. 1000) located 8 miles from the epicenter, Calipatria (pop. 7,400) 10 miles away, and Brawley (pop. 25,900) 17 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Imperial (pop. 17,100) located 25 miles from the epicenter, El Centro (pop. 44,000) 29 miles away, Calexico (pop. 40,100) 37 miles away, Coachella (pop. 44,600) 44 miles away, and Indio (pop. 87,500) 48 miles away.
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Date & time: 12 Jun 2021 05:55:20 UTC -
Local time at epicenter:
11 Jun 10:55 pm (GMT -7)
Depth: 2.7 km
Epicenter latitude / longitude: 33.20467°N / 115.65833°W
, United States
Nearest volcano: Salton Buttes
(4 km / 2 mi)
Nearby towns and cities:14 km (8 mi) WSW of Imperial Junction
(pop: 1,010) --> See nearby quakes!16 km (10 mi) WNW of Calipatria
(pop: 7,420) --> See nearby quakes!28 km (17 mi) NNW of Brawley (Imperial County)
(pop: 25,900) --> See nearby quakes!41 km (25 mi) NNW of Imperial
(pop: 17,100) --> See nearby quakes!47 km (29 mi) N of El Centro
(pop: 44,000) --> See nearby quakes!60 km (37 mi) NNW of Calexico
(pop: 40,100) --> See nearby quakes!71 km (44 mi) SE of Coachella
(pop: 44,600) --> See nearby quakes!77 km (48 mi) SE of Indio
(pop: 87,500) --> See nearby quakes!110 km (68 mi) WNW of Arizona
(pop: 94,100) --> See nearby quakes!796 km (495 mi) SE of Sacramento
(pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 30.7°C
(87 F), humidity: 32%, wind: 4 m/s (8 kts) from W
Primary data source: USGS
(United States Geological Survey)
Estimated released energy: 4.5 x 1010
joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) More info
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.
|3.9||2.7 km||14km WSW of Niland, CA||USGS|
|3.8||5 km||SOUTHERN CALIFORNIA||EMSC|
User reports for this quake (4)
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Yuma,AZ / Very weak shaking (MMI II) / horizontal (sideways) swinging / very short
Campo Calif / Light shaking (MMI IV) / single vertical bump / very short : IT WAS JUST ONE THUMP LIKE A JOLT
Azusa / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : 2 second low vibration
Mexicali BC / Very weak shaking (MMI II) / single vertical bump / very short
Earlier earthquakes in the same area
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