Activity for the period July 25 - July 31, 2005:

Updated at 9:10 AM (PDT) on Monday, July 25, 2005:

The realtime computer system detected and located six small earthquakes in the vicinity of Long Valley caldera since the last update at 11:20 AM on the 24th. All were located in the Sierra Nevada south of the caldera and all had magnitudes M<2.0.

Updated at 9:10 AM (PDT) on Tuesday, July 26, 2005:

The realtime computer system detected and located five small earthquakes in the vicinity of Long Valley caldera since the last update at 9:10 AM on the 25th. The largest were M=2.0 and M=2.3 earthquakes at 6:31 PM on the 25th and 8:23 AM on the 26th, respectively. Both were located in the McGee Creek area 1.5 miles east of Mt. Baldwin (8 miles W of Tom's Place).

Updated at 9:30 AM (PDT) on Wednesday, July 27, 2005:

The realtime computer system detected and located five small earthquakes in the vicinity of Long Valley caldera since the last update at 9:10 AM on the 26th. The largest was a M=2.2 earthquake at 7:05 AM on the 27th located midway between Convict Lake and McGee Mtn (9 miles west of Tom's Place). Two earthquakes of magnitude M=1.2 and 1.4 at 6:19 and 6:37 AM on the 27th, respectively, were located in the south moat of the caldera just south of the airport.

The realtime computer system detected and located seven small earthquakes in the vicinity of Long Valley caldera since the last update at 9:30 AM on the 27th. All but one were located in the Sierra Nevada south of the caldera. The largest of these was a M=2.0 earthquake at 6:24 AM on the 28th located beneath the west flank of Mt. Morgan (7 miles WSW of Tom's Place). The seventh was a M=1.1 earthquake located beneath the north shore of Lake Crowley along the south rim of the caldera.

Updated at 9:30 AM (PDT) on Friday, July 29, 2005:

The realtime computer system detected and located six small earthquakes in the vicinity of Long Valley caldera since the last update at 8:50 AM on the 28th. All but one were located in the Sierra Nevada south of the caldera. The largest of these was a M=2.8 earthquake at 7:13 PM on the 28th located beneath the west flank of Mt. Baldwin (10 miles SE of Mammoth Lakes). The sixth was a M=1.4 earthquake at 9:06 AM on the 28th located beneath the south moat just south of the airport.

Updated at 10:30 AM (PDT) on Saturday, July 30, 2005:

The realtime computer system detected and located seven small earthquakes in the vicinity of Long Valley caldera since the last update at 9:30 AM on the 29th. All had magnitudes M<2. Six were located in the Sierra Nevada south of the caldera. The seventh was a M=1.0 earthquake at 10:02 AM on the 29th located beneath the south moat just west of the airport.

Updated at 9:50 AM (PDT) on Sunday, July 31, 2005:

The realtime computer system detected and located just two M~1 earthquakes in the vicinity of Long Valley caldera since the last update at 10:30 AM on the 30th. One was located in the Sierra Nevada 10 miles WSW of Tom's Place and the other beneath the area where Hy 395 crosses the southern margin of the caldera (7 miles WNW of Tom's Place).