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Latest news:
Fri, 19 Jul 2013, 02:12
Long Valley volcano (California) activity update
Map of recent quakes at the Long Valley caldera (California)
Normal seismic activity with numerous tiny earthquakes continues to occur at the southern and western parts of the caldera as well as under Mammoth mountain. There are no signs of a possible eruption in a near future. ... read all
Sun, 31 Mar 2013, 10:53
Long Valley caldera (California): felt magnitude 3.8 earthquake
Location of yesterday's 3.8 earthquake
Some felt earthquakes have occurred recently along the southern boundary of Long Valley Caldera, the latest a 3.8 magnitude quakes yesterday. This is not unusual for the volcanic system and does not mean any volcanic eruption should be expected in a near future. The alert status remains green (normal). ... read all
Simplified geologic map for Long Valley Caldera and the Mono-Inyo Craters volcanic chain (based on Bailey, 1989) CD, Casa Diablo; HC Hot Cree; HCF Hiloton Creek Fault; HSF, Hartley Springs Fault; LCF, Laurel Creek Fault; MLF, Mono Lake Fault; SLF, Silver Lake Fault; WCF, Wheeler Crest Fault. (source: USGS)
Simplified geologic map for Long Valley Caldera and the Mono-Inyo Craters volcanic chain (based on Bailey, 1989) CD, Casa Diablo; HC Hot Cree; HCF Hiloton Creek Fault; HSF, Hartley Springs Fault; LCF, Laurel Creek Fault; MLF, Mono Lake Fault; SLF, Silver Lake Fault; WCF, Wheeler Crest Fault. (source: USGS)
 

Long Valley volcano

caldera 3390 m / 11,122 ft, California, 37.7°N / -118.87°W
Nearby recent earthquakes (within 30km radius):
Earthquake list: past 7 days, magnitude -0.8 or higher (34 quakes)
Updated: Fri, 23 Oct 06:39 UTC (GMT)
Quake statistics | Yesterday
Look up past earthquakes:
Show quakes
Filter by magnitude:
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2.0+
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Depth and magnitude of quakes versus time plot

Earthquake depth plot

Earthquake list

TimeMag. / DepthDistanceLocationMapSource
Fri, 23 Oct 2020 (UTC)
22 Oct 5:52 pm (GMT -7) (23 Oct 00:52:55 UTC)M 1.0 / 5.1 km - InfoLong Valley (25 km) - California 12km SW of Toms Place, CA, USA
Map		USGS
Thu, 22 Oct 2020 (UTC)
Thu, 22 Oct 11:00 UTCM 0.8 / 6.3 km - InfoLong Valley (8 km) - California 20km ENE of Mammoth Lakes, CA, USA
Map		USGS
21 Oct 11:10 pm (GMT -7) (22 Oct 06:10:55 UTC)M 1.6 - InfoLong Valley (24 km) - California 20 Km WNW of Benton, California, USA
Map		USGS
21 Oct 7:03 pm (GMT -7) (22 Oct 02:03:32 UTC)M 0.1 / 3.2 km - InfoLong Valley (6 km) - California 10km E of Mammoth Lakes, CA, USA
Map		USGS
21 Oct 5:21 pm (GMT -7) (22 Oct 00:21:30 UTC)M 0.2 / 2 km - InfoLong Valley (8 km) - California 9km E of Mammoth Lakes, CA, USA
Map		USGS
Wed, 21 Oct 2020 (UTC)
21 Oct 1:09 pm (GMT -7) (21 Oct 20:09:57 UTC)M 0.5 / 3.1 km - InfoLong Valley (14 km) - California 13km W of Toms Place, CA, USA
Map		USGS
Wed, 21 Oct 06:58 UTCM 1.1 / 0.3 km - InfoLong Valley (26 km) - California 16km SW of Toms Place, CA, USA
Map		USGS
Wed, 21 Oct 05:52 UTCM 0.7 / 4.6 km - InfoLong Valley (9 km) - California 4km E of Mammoth Lakes, CA, USA
Map		USGS
Wed, 21 Oct 02:12 UTCM 0.9 / 4.9 km - InfoLong Valley (14 km) - California 10km WNW of Toms Place, CA, USA
Map		USGS
Wed, 21 Oct 00:46 UTCM 0.5 / 0.4 km - InfoLong Valley (10 km) - California 13km ESE of Mammoth Lakes, CA, USA
Map		USGS
Tue, 20 Oct 2020 (UTC) (8 earthquakes)
20 Oct 2:08 pm (GMT -7) (20 Oct 21:08:22 UTC)M 0.2 / 4.3 km - InfoLong Valley (14 km) - California 11km WNW of Toms Place, CA, USA
Map		USGS
20 Oct 1:23 pm (GMT -7) (20 Oct 20:23:46 UTC)M 0.6 - InfoLong Valley (21 km) - California 14km WSW of Toms Place, CA, USA
Map		USGS
Tue, 20 Oct 06:57 UTCM 1.4 / 2.7 km - InfoLong Valley (6 km) - California 8km E of Mammoth Lakes, CA, USA
Map		USGS
Tue, 20 Oct 05:13 UTCM 0.9 / 8.8 km - InfoLong Valley (19 km) - California 9km W of Toms Place, CA, USA
Map		USGS
Tue, 20 Oct 05:10 UTCM 0.4 / 8.7 km - InfoLong Valley (18 km) - California 10km W of Toms Place, CA, USA
Map		USGS
Tue, 20 Oct 05:02 UTCM 0.7 / 3.8 km - InfoLong Valley (19 km) - California 11km WSW of Toms Place, CA, USA
Map		USGS
Tue, 20 Oct 04:55 UTCM 1.6 / 8.6 km - InfoLong Valley (18 km) - California 10km W of Toms Place, CA, USA
Map		USGS
Tue, 20 Oct 03:09 UTCM 0.6 / 6.9 km - InfoLong Valley (19 km) - California 16km SE of Mammoth Lakes, CA, USA
Map		USGS
Mon, 19 Oct 2020 (UTC)
Mon, 19 Oct 12:58 UTCM 1.1 / 6 km - InfoLong Valley (8 km) - California 7km E of Mammoth Lakes, CA, USA
Map		USGS
Mon, 19 Oct 07:44 UTCM 0.7 / 1.9 km - InfoLong Valley (22 km) - California 14km WSW of Toms Place, CA, USA
Map		USGS
Sun, 18 Oct 2020 (UTC) (7 earthquakes)
18 Oct 2:03 pm (GMT -7) (18 Oct 21:03:10 UTC)M 0.3 / 4.8 km - InfoLong Valley (6 km) - California 8km E of Mammoth Lakes, CA, USA
Map		USGS
18 Oct 1:36 pm (GMT -7) (18 Oct 20:36:13 UTC)M 0.3 / 5.8 km - InfoLong Valley (8 km) - California 8km E of Mammoth Lakes, CA, USA
Map		USGS
Sun, 18 Oct 19:56 UTCM 0.4 / 3.8 km - InfoLong Valley (9 km) - California 8km E of Mammoth Lakes, CA, USA
Map		USGS
Sun, 18 Oct 19:55 UTCM 0.7 / 5.4 km - InfoLong Valley (7 km) - California 8km E of Mammoth Lakes, CA, USA
Map		USGS
Sun, 18 Oct 16:54 UTCM 1.2 / 5.8 km - InfoLong Valley (7 km) - California 8km E of Mammoth Lakes, CA, USA
Map		USGS
18 Oct 7:46 am (GMT -7) (18 Oct 14:46:59 UTC)M 1.1 / 4.5 km - InfoLong Valley (8 km) - California 8km E of Mammoth Lakes, CA, USA
Map		USGS
17 Oct 8:14 pm (GMT -7) (18 Oct 03:14:14 UTC)M 0.1 / 4 km - InfoLong Valley (8 km) - California 4km ENE of Mammoth Lakes, CA, USA
Map		USGS
Sat, 17 Oct 2020 (UTC)
Sat, 17 Oct 10:55 UTCM 2.3 / 2.9 km - InfoLong Valley (21 km) - California 11km WSW of Toms Place, CA, USA
Map		USGS
Sat, 17 Oct 09:59 UTCM 1.3 / 4.8 km - InfoLong Valley (23 km) - California 10km SW of Toms Place, CA, USA
Map		USGS
Sat, 17 Oct 06:15 UTCM 1.0 / 2.8 km - InfoLong Valley (7 km) - California 7km E of Mammoth Lakes, CA, USA
Map		USGS
Sat, 17 Oct 03:15 UTCM 0.1 / 4.3 km - InfoLong Valley (9 km) - California 5km E of Mammoth Lakes, CA, USA
Map		USGS
16 Oct 5:44 pm (GMT -7) (17 Oct 00:44:56 UTC)M 1.2 / 4.1 km - InfoLong Valley (18 km) - California 14km W of Toms Place, CA, USA
Map		USGS
Fri, 16 Oct 2020 (UTC)
Fri, 16 Oct 14:23 UTCM 0.6 / 6.1 km - InfoLong Valley (9 km) - California 5km E of Mammoth Lakes, CA, USA
Map		USGS
Fri, 16 Oct 12:11 UTCM 0.1 / 2.3 km - InfoLong Valley (7 km) - California 6km ENE of Mammoth Lakes, CA, USA
Map		USGS
Estimated combined seismic energy released: 2.5 x 108 joules (70.5 kilowatt hours) [learn more]

Earthquake statistics

Number of earthquakes vs time:

Past 24 hrs:
Number of quakes and energy past 24 hours
Past 30 days:
Number of quakes and energy past 30 days
Past 90 days:
Number of quakes vs time
Magnitude distribution and energy released:
Past 24 hrs:
Number of quakes and energy vs magnitude past 24 hrs Magnitudes of quakes and energy vs time past 24 hrs
Past 7 days:
Number of quakes and energy vs magnitude past 7 days Magnitudes of quakes and energy vs time past 7 days
Past 30 days:
Number of quakes and energy vs magnitude past 30 days Magnitudes of quakes and energy vs time past 30 days
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