Last Seven Days of U.S. Volcano Updates
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The realtime detection system located one small earthquake in the Long Valley caldera area since the last update at 6:45 AM (DPT) on May 7. This was a magnitude M=2.0 earthquake at 5:32 PM (PDT) on the 6th located in the Sierra Nevada 8 miles SE of Mammoth Lakes. (Volcano Status Page)
Report prepared by the Hawaiian Volcano Observatory:
Mauna Loa is not erupting. Slow extension, as measured by GPS receivers on either side of the volcano, has resumed after a hiatus of a few weeks.
Tiltmeters have recorded no significant changes.
Gas sensors continued to record background gas concentrations within a crack in the crater floor.
Mauna Loa remains seismically quiet with few earthquakes occurring beneath the summit and several located within the Kao`iki seismic zone between Mauna Loa and Kilauea volcanic summits. Since the beginning of January, 2005, HVO analysts have rarely located more than 10 earthquakes per week beneath Mauna Loa summit.
(Volcano Status Page)
This report on the status of Kilauea volcanic activity, in addition to maps, photos, and webcam images (available using the menu bar above), was prepared by the USGS Hawaiian Volcano Observatory (HVO). Information on the status of Hawai`i Volcanoes National Park can be found at http://www.nps.gov/havo/ or 985-6000. Information on the Hawai`i County Viewing Area can be found at http://www.lavainfo.us or 961-8093.
Activity Summary for last 24 hours: Kilauea Volcano is active at two locations. At the summit, production of small amounts of ash, elevated sulfur dioxide, and elevated seismic tremor continued from the Halema`uma`u vent. At the east rift eruption site, lava flowed through tubes to the ocean.
Last 24 hours at Kilauea summit: Molten lava may reside at shallow depth within ... (Volcano Status Page)
The realtime detection system located two small earthquakes in the Long Valley caldera area since the last update at 9:11 AM on May 6. Both had magnitudes less than M=2.0. They both were located in the Sierra Nevada south of the caldera, and both occurred on the 6th.
(Volcano Status Page)
This report on the status of Kilauea volcanic activity, in addition to maps, photos, and webcam images (available using the menu bar above), was prepared by the USGS Hawaiian Volcano Observatory (HVO). Information on the status of Hawai`i Volcanoes National Park can be found at http://www.nps.gov/havo/ or 985-6000. Information on the Hawai`i County Viewing Area can be found at http://www.lavainfo.us or 961-8093.
Activity Summary for last 24 hours: Kilauea Volcano is active at two locations. At the summit, production of small amounts of ash, elevated sulfur dioxide, and elevated seismic tremor continued from the Halema`uma`u vent. The fourth DI tilt event in the last six days is nearing completion. At the east rift eruption site, surface flows broke out in the rootless shield field and ... (Volcano Status Page)
This report on the status of Kilauea volcanic activity, in addition to maps, photos, and webcam images (available using the menu bar above), was prepared by the USGS Hawaiian Volcano Observatory (HVO). Information on the status of Hawai`i Volcanoes National Park can be found at http://www.nps.gov/havo/ or 985-6000. Information on the Hawai`i County Viewing Area can be found at http://www.lavainfo.us or 961-8093.
Activity Summary for last 24 hours: Kilauea Volcano is active at two locations. At the summit, production of small amounts of ash, elevated sulfur dioxide, and elevated seismic tremor continued from the Halema`uma`u vent. At the east rift eruption site, lava flowed through tubes to the ocean.
Last 24 hours at Kilauea summit: Molten lava may reside at shallow depth within ... (Volcano Status Page)
The only earthquake the realtime detection system located in the Long Valley caldera area since the last update at 9:26 AM on May 5 was another M=1.3 aftershock to the M=3.0 earthquake of May 3. This most recent aftershock occurred at 4:45 PM on the 4th. As with the earlier events, it was located just SW of Duck Lake (7 miles south of Mammoth Lakes).
(Volcano Status Page)
This report on the status of Kilauea volcanic activity, in addition to maps, photos, and webcam images (available using the menu bar above), was prepared by the USGS Hawaiian Volcano Observatory (HVO). Information on the status of Hawai`i Volcanoes National Park can be found at http://www.nps.gov/havo/ or 985-6000. Information on the Hawai`i County Viewing Area can be found at http://www.lavainfo.us or 961-8093.
Activity Summary for last 24 hours: Kilauea Volcano is active at two locations. At the summit, production of small amounts of ash, elevated sulfur dioxide, and elevated seismic tremor continued from the Halema`uma`u vent. At the east rift eruption site, lava resumed flow through tubes to the ocean in response to completion of the 5/3 DI tilt event; instability is anticipated in ... (Volcano Status Page)
The realtime detection system located just one small earthquakes in the Long Valley caldera area since the last update at 9:12 AM on May 4. This M=1.3 earthquake at 5:24 PM on the 4th was an aftershock to the M=3.0 earthquake located just SW of Duck Lake on May 3rd (7 miles south of Mammoth Lakes).
(Volcano Status Page)
This report on the status of Kilauea volcanic activity, in addition to maps, photos, and webcam images (available using the menu bar above), was prepared by the USGS Hawaiian Volcano Observatory (HVO). Information on the status of Hawai`i Volcanoes National Park can be found at http://www.nps.gov/havo/ or 985-6000. Information on the Hawai`i County Viewing Area can be found at http://www.lavainfo.us or 961-8093.
Activity Summary for last 24 hours: Kilauea Volcano is active at two locations. At the summit, production of small amounts of ash, elevated sulfur dioxide, and elevated seismic tremor continued from the Halema`uma`u vent. At the east rift eruption site, lava resumed flow through tubes to the ocean in response to completion of the most recent DI tilt event.
Last 24 hours at ... (Volcano Status Page)
The realtime detection system located just one small earthquakes in the Long Valley caldera area since the last update at 9:24 AM on May 3. This was a M=1.5 earthquake at 2:40 PM on the 3rd located in the Sierra Nevada 8 miles WSW of Tom's Place.
(Volcano Status Page)
This report on the status of Kilauea volcanic activity, in addition to maps, photos, and webcam images (available using the menu bar above), was prepared by the USGS Hawaiian Volcano Observatory (HVO). Information on the status of Hawai`i Volcanoes National Park can be found at http://www.nps.gov/havo/ or 985-6000. Information on the Hawai`i County Viewing Area can be found at http://www.lavainfo.us or 961-8093.
Activity Summary for last 24 hours: Kilauea Volcano is active at two locations. At the summit, production of small amounts of ash, elevated sulfur dioxide, and elevated seismic tremor continued from the Halema`uma`u vent. A seventh DI tilt event, second in the last two days, is nearing completion. At the east rift eruption site, lava continued to flow through tubes to the ocean ... (Volcano Status Page)
The realtime detection system located three earthquakes in the Long Valley caldera area since the last update at 9:26 AM on May 2. All were located in the Sierra Nevada south of the caldera. The largest was a magnitude M=3.0 earthquake at 6:25 AM (PDT) on the 3rd located 0.2 mile SW of Duck Lake (6 miles south of Mammoth Lakes). The other two had magnitudes less than M=2.0.
(Volcano Status Page)
SUMMARY:
The pause in lava dome growth continues, and all our monitoring instruments show trifling or nil volcanic-related activity. This pause, which began in late January 2008, was recognized by absence of measurable growth among successive fixed-camera images, nearly quiescent seismicity, and the absence of tilt signals that might characterize extrusion of lava from the conduit.
We continue to monitor closely for evidence of renewed extrusion or other activity. The new lava dome remains hot in places; thus, it is capable of producing hot avalanches or small steam explosions that could cause hazardous conditions in and around the crater. Sudden melting of snow and ice could send small lahars onto the Pumice Plain and perhaps down the Toutle River as far as the Sediment Retention ... (Volcano Status Page)
APRIL 2008 Yellowstone Seismicity Summary
During the month of April 2008, 70 earthquakes were located in the Yellowstone Region. The largest of these shocks was a magnitude 1.7 event on April 17, 2008 at 6:56 AM MST, located about 13 miles North Northwest of Pahaska Tepee, WY and 19 miles North East of Fishing Bridge, WY. This earthquake was not felt. There were no earthquake swarms. Earthquake activity in the Yellowstone region is at relatively low background levels.
Earthquake activity in the Yellowstone region is at normal background levels.
Ground Deformation Summary: Through April 2008, continuous GPS data show that most of the Yellowstone caldera continued moving upward at similar to slightly lower rates as the past year. The maximum measured ground uplift over the past ... (Volcano Status Page)
This report on the status of Kilauea volcanic activity, in addition to maps, photos, and webcam images (available using the menu bar above), was prepared by the USGS Hawaiian Volcano Observatory (HVO). Information on the status of Hawai`i Volcanoes National Park can be found at http://www.nps.gov/havo/ or 985-6000. Information on the Hawai`i County Viewing Area can be found at http://www.lavainfo.us or 961-8093.
Activity Summary for last 24 hours: Kilauea Volcano is active at two locations. At the summit, production of ash, elevated sulfur dioxide, and elevated seismic tremor continued from the Halema`uma`u vent. At the east rift eruption site, lava continued to flow through tubes to the ocean.
Last 24 hours at Kilauea summit: Molten lava may reside at shallow depth within the new ... (Volcano Status Page)
A magnitude M=3.0 earthquake at 1:47 AM (PDT) on the 2nd continued the sequence of small earthquakes in the Round Valley area just south of the Pleasant Valley reservoir that began with a M=3.5 earthquake on April 27. This was the only earthquake in the Long Valley caldera region located by the realtime detection system since the last update at 9:34 AM on May 1.
(Volcano Status Page)
