Volcanic Activity Reports
Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program
Jun 27, 2017 02:48 - Seismicity for the eruption at Bogoslof volcano at 00:45 UTC on June 27 (16:45 AKDT on June 26) remained elevated until 00:59 UTC (16:59 AKDT) and has since declined to background levels. The eruption produced a volcanic cloud moving northeast with an estimated altitude of 25,000 ft asl by satellite data, and a pilot reported a visible cloud at 22,000 ft asl. Given the lower altitude of the volcanic cloud and short duration of the explosion, the Aviation Color Code remains ORANGE and Volcano Alert Level WATCH.
Recent eruptive episodes have produced multiple ...
Jun 26, 2017 20:43 - Recent observations of Cleveland Volcano suggest that unrest has declined and it is unlikely that eruptive activity is continuing, prompting AVO to lower the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY earlier today. Satellite observations have yielded no evidence for continuing lava effusion since June 7, and there have been no detections of anomalous seismicity or infrasound from the volcano since a brief explosion on Tuesday evening (May 16) at 19:17 AKDT (03:17 May 17 UTC).
Cleveland volcano is monitored with a limited real-time seismic ...
Jun 26, 2017 20:43 - Nothing noteworthy was observed in cloudy satellite or web camera images today, and no unusual activity has been detected in seismic or infrasound data over the past 24 hours.
The level of unrest at Pavlof can change quickly and the progression to eruptive activity can occur with little or no warning. We continue to monitor Pavlof closely and will provide any new information about the status of the volcano when or if it becomes available.
Jun 26, 2017 18:54 - Activity Summary: No significant change. K?lauea Volcano continues to erupt at the summit and at Pu?u???? vent on the East Rift Zone. The episode 61g lava flow from Pu?u???? is entering the ocean at Kamokuna. Surface flows are active above the pali, but pose no threat to nearby communities. The summit lava lake level is rising in concert with inflationary tilt. The lake surface is about 30 m (100 ft) below the floor of Halema?uma?u this morning. There have been no significant changes in seismicity levels or ground deformation trends across the volcano. ...
Jun 23, 2017 17:42 - 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: Monitoring systems show that activity at Cascade Range volcanoes remained at background levels throughout the week. Engineering crews have been in the field this week conducting annual maintenance on monitoring stations near Mount Hood.
Jun 22, 2017 20:17 - Activity Summary: Mauna Loa Volcano is not erupting. Rates of deformation and seismicity have not changed significantly in the past week, and persist above long-term background levels.
Observations: During the past week, only a few small-magnitude earthquakes occurred beneath the volcano, primarily in the south caldera and upper Southwest Rift at depths less than 5 km (3 miles). An additional, small number of earthquakes also occurred on the west flank of the volcano at depths ranging from 0-13 km (0-8 miles).
Global Positioning System (GPS) and Interferometric ...
Jun 19, 2017 21:09 - The University of Utah, a YVO member agency, sent out the following update about the ongoing earthquake swarm north of West Yellowstone.
The University of Utah Seismograph Stations (UUSS) is monitoring an earthquake swarm which is currently active on the western edge of Yellowstone National Park. The swarm began on June 12th, 2017 and, as of 13:30 MDT on June 19th, 2017, is composed of 464 events with the largest magnitude of ML 4.4 (MW 4.4) (Figure 1). The swarm consists of one earthquake in the magnitude 4 range, 5 earthquakes in the magnitude 3 range, 57 ...
Jun 3, 2017 01:05 - Tenty-five earthquakes were recorded in the vicinity of L??ihi in the month of May. This is an increase over prior months but still represents a low level of seismicity.
Jun 3, 2017 01:05 - No significant changes were detected at Hual?lai during the month of May. One earthquake was recorded beneath the volcano. A continuously recording Global Positioning System (GPS) receiver atop Hual?lai recorded no significant deformation.
Jun 3, 2017 01:05 - No significant changes were detected at Haleakal? during the month of May. No earthquakes occurred in the vicinity of the volcano and HVO?s single, continuously recording Global Positioning System (GPS) instrument atop Haleakal? volcano recorded no significant deformation.
Jun 3, 2017 01:05 - No significant deformation or seismicity occurred during the month of May. HVO recorded 11 earthquakes deeper than 13 km (8 mi) and 6 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.
Jun 1, 2017 21:37 - 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 May 1, 2017 (0000h PST) through May 31, 2017 (2359h PDT):
Mt Shasta: Six ...