At 4:11 pm yesterday (Sunday), there was a M3.5 Hector aftershock. The location was 39 miles north of Joshua Tree. We have no reports of anyone feeling it.
At 6:25 pm last night (Saturday), there was a M2.9 quake located 11 miles northeast of Olancha, in southern Owens Valley. We have so far received no 'felt' reports on it.
Some of you in the Antelope Valley may have felt a quake at 10:10 pm last night. The magnitude was ML3.8, and the epicenter was located 10 miles northeast of Boron, or 33 miles west-northwest of Barstow. There were 'felt' reports from as far away as Victorville and the southern Owens Valley.
We have recorded and located 251 earthquakes in the last week. Click here to see a summary and map .
We have recorded and located 303 earthquakes in the last week. Click here to see a summary and map .
Two more earthquakes have been added to the list of aftershocks M3.0 or greater to the M5.1 earthquake of last Saturday:
M3.1 Wednesday, Feb 14th 11:25 am -4 mi NNW of town of Big Bear Lake, CA
M3.0 Tuesday, Feb 13th 9:58 pm - 4 mi NNW of town of Big Bear Lake, CA
It's not known for sure if they were felt, but it's likely.
So far the aftershock count to the M5.1 earthquake that jostled Big Bear Lake Saturday afternoon is over 45. The one M4.0 or greater aftershock that was statistically expected occurred at 4:39 pm (PST) Saturday; it was a M4.2. It was healthily felt in the epicentral area and in lesser degrees in surrounding counties: Riverside, Orange and Los Angeles.
Here is a current list of aftershocks M3.0 and greater in order of oldest to most recent (including the mainshock). All times are PST:
M5.1 Saturday, Feb. 10th 1:05 pm - 4 mi NNW of town of Big Bear Lake, CA
M3.1 Saturday, Feb. 10th 1:35 pm - 4 mi NNW of town of Big Bear Lake, CA
M3.2 Saturday, Feb. 10th 3:34 pm - 4 mi NW of town of Big Bear Lake, CA
M4.2 Saturday, Feb. 10th 4:39 pm - 4 mi NNW of town of Big Bear Lake, CA
M3.2 Saturday, Feb. 10th 11:14 pm - 4 mi NNW of town of Big Bear Lake, CA
M3.1 Sunday, Feb. 11th 2:41 am - 4 mi NNW of town of Big Bear Lake, CA
Wow! Seismicity picked up today. Starting this morning at 9:50 am there was a M3.9 earthquake located 8 miles north-northeast of Indio. It's expected this was felt though we haven't received any felt reports. The focal mechanism for this earthquake shows mostly strike-slip movement which is common for this area.
At 1:05 pm (and without needing much introduction) there was a M5.1 earthquake 4 miles northwest of the town of Big Bear Lake. So far, there have been roughly 15 to 20 aftershocks - the largest, a M3.1, occurring 30 minutes after the mainshock. Needless to say it was widely felt with reports coming out of Ventura and San Diego counties. For more information see the Special Report for the Big Bear Lake Earthquake on the Current Seismicity & SCSN Earthquake Reports page.
We have recorded and located 267 earthquakes in the last week. Click here to see a summary and map .
We have recorded and located 230 earthquakes in the last week. Click here to see a summary and map .
Between 6:24 pm and about 7:30 pm yesterday evening, there was a cluster of small quakes about 1 miles west-southwest of Obsidian Butte, along the southeastern shore of the Salton Sea. The largest members of the cluster were: a M2.5 at 6:24 pm, a M2.5 at 6:44 pm, a M2.6 at 6:45 pm, and a M2.9 at 6:49 pm. Obsidian Butte is within the Brawley Seismic Zone, a band of seismic swarm activity that connect the northern end of the Imperial fault with the southern end of the San Andreas fault.
