Volcanic Activity Reports

Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program

Mar 24, 2017 20:31 - Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background levels of activity. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State; and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon. Recent Observations: No indicators of volcanic unrest were detected at any of the monitored Cascade volcanoes of Washington and Oregon during the past week. A field crew worked on the telemetry tower at the Mt. Hood Ranger Station and restored the Shell ...
Mar 24, 2017 19:24 - A small explosion was detected at Cleveland volcano at 08:15 AKST (16:15 UTC) today in both seismic and infrasound (pressure sensor) data. As a result AVO is increasing the Aviation Color Code to Orange and the Alert Level to Watch. This event was short lived and similar, if not smaller, than recent explosions at this volcano. Cloud cover to 30,000 feet above sea level is obscuring observations of the volcano by satellite views and no ash cloud has been observed. The ash cloud that was likely generated during this explosion has probably dissipated at this time and was ...
Mar 24, 2017 19:13 - Activity Summary: K?lauea Volcano continues to erupt at its summit and at the Pu?u ???? vent on its East Rift Zone. The episode 61g lava flow from Pu?u ???? continues to enter the ocean at Kamokuna and surface flows from a March 5 breakout are still active above the pali. These lava flows pose no threat to nearby communities at this time. The summit lava lake was about 19 m (62 ft) below the Overlook crater rim when measured this morning. Summit Observations: A magnitude 4.5 earthquake occurred at 10:27 AM HST yesterday, located at a depth of 8.3 km (5.2 ...
Mar 23, 2017 21:18 - Activity Summary: Mauna Loa is not erupting. Rates of deformation and seismicity have not changed significantly in the past week and continue to be above long-term background levels. Observations: Small-magnitude earthquakes continue to occur beneath the volcano. Earthquakes were most common beneath the east flank at depths greater than 5 km (3 miles) and in the summit region, upper Southwest Rift Zone, and upper west flank at depths less than 5 km (3 miles). Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma ...
Mar 23, 2017 20:44 - No significant volcanic activity has been detected in seismic or infrasound data over the past day. Weakly elevated surface temperatures were observed in one satellite image over the past day and is likely related to heat given off by the warm crater lake at Bogloslof. Bogoslof volcano remains at a heightened state of unrest and in an unpredictable condition. Additional explosions producing high-altitude (>15,000 ft) volcanic clouds could occur at any time. Some previous explosions have been preceded by an increase in earthquake activity that allowed for short-term ...
Mar 2, 2017 19:49 - No unusual seismicity was recorded during the month of February 2017. Two earthquakes were recorded in the vicinity of L??ihi in the past month.
Mar 2, 2017 19:49 - There were no significant changes during the month of February 2017. No earthquakes were recorded beneath the volcano during the past month and the continuously recording Global Positioning System (GPS) receiver atop Hual?lai recorded no significant deformation.
Mar 2, 2017 19:49 - There were no significant changes during the month of February 2017. No earthquakes occurred in the vicinity of Haleakal? (East Maui) volcano and HVO?s single, continuously recording Global Positioning System (GPS) instrument atop Haleakal? volcano recorded no significant deformation.
Mar 2, 2017 19:49 - No significant deformation or seismicity occurred during the month of February 2017. HVO recorded 10 earthquakes deeper than 13 km (8 mi) and 10 shallow earthquakes beneath the volcano during the past month. A single, continuously recording Global Positioning System (GPS) receiver atop Mauna Kea (operated by NASA?s Jet Propulsion Laboratory) recorded no significant deformation.
Mar 2, 2017 19:00 - Monitored CALIFORNIA VOLCANOES Current Volcano Alert Level: all NORMAL Current Aviation Color Code: all GREEN Activity Update: All volcanoes monitored by CalVO using telemetered, real-time sensor networks exhibit normal levels of background seismicity and deformation. Volcanoes monitored include Mount Shasta, Medicine Lake Volcano, Clear Lake Volcanic Field, Lassen Volcanic Center, Long Valley Volcanic Region, Coso Volcanic Field, Ubehebe Craters, and Salton Buttes. Observations for February 1, 2017 (0000h PST) through February 28, 2017 (2359h PDT): Mt ...
Mar 1, 2017 17:41 - Seismicity During February 2017, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, reports 48 earthquakes were located in the Yellowstone National Park (YNP) region. The largest event was a microearthquake of magnitude 2.4 that occurred on February 09, 01:40 PM MST located 16 miles south of Mammoth, YNP, WY. February seismicity did not include any swarm activity. Yellowstone earthquake activity in February is at low background levels. Ground deformation Uplift centered near the Norris ...

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Smithsonian / USGS Weekly Volcanic Activity Report





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