Monday, August 3, 2009 15:54 MDT (Monday, August 3, 2009 21:54 UTC)
YELLOWSTONE VOLCANO (CAVW#1205-01-)
44.43°N 110.67°W, Summit Elevation 9203 ft (2805 m)
Volcano Alert Level: NORMAL
Aviation Color Code: GREEN
July 2009 Yellowstone Seismicity Summary
During the month of July 2009, 98 earthquakes were located in the Yellowstone region. The largest event was a magnitude 2.7 on July 8 at 9:08 AM MDT, located about 5 miles south southeast of Fishing Bridge, WY. The swarm that began on June 30th continued through July 3. This small swarm was located about 15 miles east northeast of West Yellowstone, MT and totaled 37 earthquakes with magnitudes ranging from 3.3 to -0.2.
Earthquake activity in the Yellowstone region is at relatively normal background levels.
Ground Deformation Summary: Through July 2009, continuous GPS data show that uplift of the Yellowstone Caldera has slowed but may be continuing. The WLWY station, located in the northeastern part of the caldera, has undergone a total of ~23 cm of uplift since mid-2004. Its record can be found at:
http://pboweb.unavco.org/shared/scripts/stations/?checkkey=WLWY&sec=timeseries_plots×eries=raw
The currently observed reduction in uplift rate may be related to seasonal changes related to snowmelt and groundwater recharge. In several of the past 5 years, such changes have caused decreased uplift or slight subsidence, but were followed later in the year by continued uplift. The general uplift of the Yellowstone caldera is of scientific importance and will continue to be monitored closely by YVO staff.
An article on the current uplift episode at Yellowstone and discussion of long-term ground deformation at Yellowstone and elsewhere can be found at: http://volcanoes.usgs.gov/yvo/publications/2007/upsanddowns.php
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The Yellowstone Volcano Observatory (YVO) is a partnership of the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.
44.43°N 110.67°W, Summit Elevation 9203 ft (2805 m)
Volcano Alert Level: NORMAL
Aviation Color Code: GREEN
July 2009 Yellowstone Seismicity Summary
During the month of July 2009, 98 earthquakes were located in the Yellowstone region. The largest event was a magnitude 2.7 on July 8 at 9:08 AM MDT, located about 5 miles south southeast of Fishing Bridge, WY. The swarm that began on June 30th continued through July 3. This small swarm was located about 15 miles east northeast of West Yellowstone, MT and totaled 37 earthquakes with magnitudes ranging from 3.3 to -0.2.
Earthquake activity in the Yellowstone region is at relatively normal background levels.
Ground Deformation Summary: Through July 2009, continuous GPS data show that uplift of the Yellowstone Caldera has slowed but may be continuing. The WLWY station, located in the northeastern part of the caldera, has undergone a total of ~23 cm of uplift since mid-2004. Its record can be found at:
http://pboweb.unavco.org/shared/scripts/stations/?checkkey=WLWY&sec=timeseries_plots×eries=raw
The currently observed reduction in uplift rate may be related to seasonal changes related to snowmelt and groundwater recharge. In several of the past 5 years, such changes have caused decreased uplift or slight subsidence, but were followed later in the year by continued uplift. The general uplift of the Yellowstone caldera is of scientific importance and will continue to be monitored closely by YVO staff.
An article on the current uplift episode at Yellowstone and discussion of long-term ground deformation at Yellowstone and elsewhere can be found at: http://volcanoes.usgs.gov/yvo/publications/2007/upsanddowns.php
-----
The Yellowstone Volcano Observatory (YVO) is a partnership of the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.
Yellowstone National Park
Update time = Thu Aug 27 21:00:37 MDT 2009
Here are the earthquakes appearing on this map, most recent at top ...
MAG DATE LOCAL-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
0.1 2009/08/27 10:30:54 44.794N 110.985W 8.3 18 km (11 mi) NNE of West Yellowstone, MT
1.5 2009/08/27 09:26:58 44.722N 111.296W 0.9 16 km (10 mi) WNW of West Yellowstone, MT
1.3 2009/08/27 05:28:46 44.719N 111.294W 0.7 16 km (10 mi) WNW of West Yellowstone, MT
1.7 2009/08/27 05:28:24 44.718N 111.298W 3.7 16 km (10 mi) WNW of West Yellowstone, MT
Recent Earthquakes in the Intermountain West
Update time = Thu Aug 27 21:00:37 MDT 2009
MAG DATE LOCAL-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
1.8 2009/08/27 20:19:03 37.601N 116.088W 16.0 40 km (25 mi) W of Tempiute, NV
1.1 2009/08/27 18:59:31 47.387N 114.356W 0.0 8 km ( 5 mi) NNW of Old Agency, MT
2.1 2009/08/27 13:15:19 38.717N 117.060W 0.0 51 km (32 mi) SSE of Washington, NV
0.1 2009/08/27 10:30:54 44.794N 110.985W 8.3 18 km (11 mi) NNE of West Yellowstone, MT
1.5 2009/08/27 10:18:49 39.702N 110.709W 0.5 13 km ( 8 mi) E of Helper, UT
1.5 2009/08/27 09:26:58 44.722N 111.296W 0.9 16 km (10 mi) WNW of West Yellowstone, MT
1.3 2009/08/27 05:28:46 44.719N 111.294W 0.7 16 km (10 mi) WNW of West Yellowstone, MT
1.7 2009/08/27 05:28:24 44.718N 111.298W 3.7 16 km (10 mi) WNW of West Yellowstone, MT
1.7 2009/08/27 00:45:15 39.694N 110.486W 2.9 17 km (11 mi) NNW of Sunnyside, UT
0.9 2009/08/27 00:26:56 36.897N 115.981W 0.0 45 km (28 mi) NW of Indian Springs, NV
