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火山称号 警报等级 所属地域 火山状况
UNASSIGNEDAleutians
NORMALAleutians
UNASSIGNEDAlaska PeninsulaThe Alaska Volcano Observatory (AVO) has experienced failures of all monitoring instruments and stations at Fourpeaked Volcano and can no longer seismically monitor unrest at this volcano. As a result AVO is unable to (1) assess whether this ...
UNASSIGNEDAlaska PeninsulaOn Saturday November 12, 2016, AVO received reports from local residents of an avalanche feature on the northeast flank of Frosty Volcano, located 8 mi (13 km) southwest of Cold Bay. Analysis of photographs received by AVO show that a small portion ...
NORMALAleutiansThe magnitude 6.0 earthquake that occurred this morning at 09:00 AKDT (17:00 UTC) near Gareloi volcano was part of an ongoing swarm of shallow earthquakes that has been active between Gareloi and Tanaga Islands since April 30. At this time, the ...
UNASSIGNEDWrangell Volcanic Field
NORMALAleutiansEarlier this week, AVO released an Information Statement describing an increase in seismic activity at Great Sitkin Volcano in the central Aleutian Islands, possibly starting as early as 30 July 2016. Along with the year-long increase in shallow ...
NORMALAlaska Peninsula
UNASSIGNEDCook Inlet-South Central
UNASSIGNEDAleutians
NORMALCook Inlet-South CentralJust before midnight on Saturday May 21, AVO detected seismic and pressure sensor signals associated with a large non-volcanic avalanche on the north flank of Iliamna Volcano. Avalanche events are somewhat common at this volcano. The seismic ...
UNASSIGNEDSeward Peninsula
UNASSIGNEDSouthwest Alaska
NORMALAleutians
NORMALAlaska PeninsulaThe Alaska Volcano Observatory (AVO) has re-established five of the six seismic monitoring instruments at Aniakchak Volcano and can now confidently monitor seismic unrest at the volcano. The maintenance work was completed this summer. With ...
UNASSIGNEDAleutians
UNASSIGNEDAlaska Peninsula
NORMALAleutiansThe level of unrest at Kanaga Volcano has declined to background levels and AVO is reducing the Aviation Color Code and Volcano Alert Level to Green/Advisory. A brief period of elevated seismicity and an associated minor ash emission were ...
UNASSIGNEDAleutiansYesterday, AVO reduced the Aviation Color Code to UNASSIGNED and Volcanic Alert Level to UNASSIGNED following two months of declining regional seismicity and no sign of continuing volcanic unrest.
NORMALAlaska PeninsulaStrong northwest winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes have picked up loose volcanic ash erupted during the 1912 Novarupta-Katmai eruption and carried it to the southeast today. As seen in a satellite image from this ...
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
UNASSIGNEDAleutians
UNASSIGNEDBering Sea
NORMALAleutians
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutiansAVO can no longer seismically monitor the following volcanoes because of seismic station outages. As a result, AVO is unable to (1) assess whether these volcanoes may be building towards an eruption and (2) quickly confirm or dismiss reports of ...
NORMALAlaska Peninsula
NORMALAleutians
NORMALAlaska Peninsula
UNASSIGNEDAleutians
NORMALCook Inlet-South CentralThe M7.1 earthquake that occurred this morning at 1:30 AM AKDT between Augustine and Iliamna volcanoes was a result of tectonic plate motions and was not directly related to the volcanoes. According to the Alaska Earthquake Center (AEC), it was ...
NORMALAlaska Peninsula
UNASSIGNEDSouthwest Alaska
NORMALAleutiansAVO reduced the Aviation Color Code to GREEN and the Volcanic Alert Level to NORMAL for Okmok volcano earlier today. Seismic activity at Okmok has been at low to near background levels and satellite views show no activity over the past two weeks. ...
ADVISORYAlaska PeninsulaNo activity was observed in partly cloudy satellite data. Pavlof was obscured by cloudy weather in web camera images from the past day. No significant activity has been detected in seismic and infrasound data over the past day. The level of ...
UNASSIGNEDAlaska Peninsula
UNASSIGNEDSoutheast Alaska
UNASSIGNEDAleutians
NORMALCook Inlet-South CentralAVO detected a series of small repetitive earthquakes near the summit of Redoubt volcano on April 17 - 20 of this week. This swarm was similar in character to those occurring on April 5 - 6, 2010 and in December 2009. As the lava dome and magma in ...
UNASSIGNEDAleutians
UNASSIGNEDWrangell Volcanic FieldFor the past several days, residents of the Copper River Basin have observed and reported a persistent, white cloud streaming from the summit of Mt. Sanford and extending for up to several tens of miles to the south. The cloud was easily visible in ...
UNASSIGNEDAleutians
UNASSIGNEDAleutians
UNASSIGNEDAleutiansA decline in seismicity over the last few months and no sign of activity in daily satellite images prompts AVO to downgrade Semisopochnoi volcano from Aviation Color Code YELLOW and Volcanic Alert Level ADVISORY to UNASSIGNED. Following a brief ...
UNASSIGNEDAleutians
UNASSIGNEDAlaska Peninsula
NORMALAleutiansThe status of Shishaldin Volcano was lowered to aviation color code GREEN and volcano alert level NORMAL this week following a steady decrease in detected thermal and seismic activity over the past several months. Low-amplitude seismic tremor ...
NORMALAlaska Peninsula
NORMALCook Inlet-South CentralA possible outburst of water from beneath a glacier on the lower south flank of Mount Spurr was detected beginning about 11:20 AKST on September 11. The flow appears to have been a single event lasting about 20 minutes. Similar and larger duration ...
UNASSIGNEDSouthwest Alaska
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
NORMALAleutiansThe energetic earthquake swarm on Tanaga Island that began on January 23, 2017, declined significantly this week and seismicity is near background levels. As a result, AVO lowered the Aviation Color Code to GREEN and Alert Level to NORMAL for ...
UNASSIGNEDAleutians
NORMALAleutians
UNASSIGNEDSoutheast Alaska
NORMALAlaska Peninsula
WATCHAleutiansA sequence of seismic events at Bogolsof began to be observed beginning at about 8:00 UTC on August 5 (MIdnight AKDT) and are continuing. Similar sequences have preceded eruptive activity at Bogoslof. In other cases, such activity died down with ...
NORMALAlaska PeninsulaOver the past several weeks seismic instruments at UGASHIK-PEULIK volcano have slowly returned to operation. These instruments are solar powered and have likely returned to operation as a result of increased solar input with the changing season. AVO ...
NORMALAlaska PeninsulaOver the past several weeks seismic instruments at Ukinrek volcano have slowly returned to operation. These instruments are solar powered and have likely returned to operation as a result of increased solar input with the changing season. AVO is now ...
UNASSIGNEDAleutians
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
NORMALAlaska PeninsulaAVO downgraded the status of Veniaminof from aviation color code YELLOW to GREEN and from volcano alert level ADVISORY to NORMAL today. Seismic activity, indicative of unrest, at Veniaminof had decreased to background levels during the past two ...
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
NORMALAleutians
UNASSIGNEDWrangell Volcanic FieldAVO can no longer seismically monitor Wrangell volcano because of seismic station outages. As a result, AVO is unable to assess seismic activity at this volcano. As at other volcanoes without real-time seismic networks, AVO will continue to use ...
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
UNASSIGNEDAlaska
UNASSIGNEDAleutians
UNASSIGNEDInterior Alaska
UNASSIGNEDAleutians
UNASSIGNEDAleutians
UNASSIGNEDAlaska Peninsula
WATCHAleutiansUnrest continues at Cleveland Volcano. Elevated surface temperatures were observed in satellite data from this morning. The summit of Cleveland is obscured by cloudy weather in web camera images. No significant activity observed in seismic ...
NORMALAleutians
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAlaska Peninsula
UNASSIGNEDSoutheast Alaska
NORMALAlaska Peninsula
UNASSIGNEDSoutheast Alaska
UNASSIGNEDAlaska Peninsula
UNASSIGNEDSeward Peninsula
NORMALAlaskaNo eruptive activity or unrest has been detected at volcanoes in Alaska this week.
UNASSIGNEDArizona
UNASSIGNEDArizona
UNASSIGNEDCalifornia
NORMALCaliforniaFifteen earthquakes with magnitudes between M=1.0 and M=1.8 occurred in the Mammoth Lakes-Long Valley region in the last seven days. The events were located in the Sierra Nevada, with the exception of three earthquakes in the caldera east of the ...
NORMALCalifornia
NORMALCalifornia
NORMALCalifornia
NORMALCalifornia
UNASSIGNEDCalifornia
UNASSIGNEDCalifornia
NORMALCalifornia
UNASSIGNEDCalifornia
NORMALCalifornia
UNASSIGNEDCalifornia
NORMALCalifornia
NORMALCalifornia
UNASSIGNEDCalifornia
UNASSIGNEDCalifornia
NORMALCalifornia
NORMALCaliforniaInformation Statement for the November 2-16, 2009, Lassen Peak swarm activity A series of small earthquake swarms beneath the southwest flank of Lassen Peak in Lassen Volcanic National Park that began in the late evening on November 2 continued ...
NORMALCascade RangeActivity 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, ...
UNASSIGNEDColorado
NORMALHawaiiNo significant changes were detected at Haleakalā during the month of July. One earthquake occurred in the vicinity of the volcano and HVO’s single, continuously recording Global Positioning System (GPS) instrument atop Haleakalā volcano ...
NORMALHawaiiNo significant changes were detected at Hualālai during the month of July. One earthquake greater than 13 km (8 mi) depth and 2 earthquakes shallower than 13 km (8 mi) depth were recorded in the vicinity of the volcano. A continuously recording ...
WATCHHawaiiActivity Summary: Kīlauea Volcano continues to erupt at its summit and from the Puʻu ʻŌʻō vent on its East Rift Zone. The episode 61g lava flow from Puʻu ʻŌʻō continues to enter the ocean at Kamokuna. Surface flows are active above the ...
UNASSIGNEDHawaiiEarthquake activity remained elevated at Lō‘ihi during July with HVO recording 27 earthquakes in the vicinity of the volcano. This is a 75% drop in the total number of Lō‘ihi earthquakes compared to June. Most earthquakes occurred around 12 ...
NORMALHawaiiNo significant deformation or seismicity occurred during the month of July. HVO recorded 10 earthquakes deeper than 13 km (8 mi) and 8 shallow earthquakes beneath the volcano in July. A single, continuously recording Global Positioning System (GPS) ...
ADVISORYHawaiiActivity Summary: Mauna Loa Volcano 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 ...
UNASSIGNEDIdaho
UNASSIGNEDIdaho
UNASSIGNEDIdaho
UNASSIGNEDIdaho
UNASSIGNEDNew Mexico
UNASSIGNEDNew Mexico
UNASSIGNEDNew Mexico
UNASSIGNEDNorthern Mariana IslandsIn a satellite image from January 22, NOAA's Washington Volcanic Ash Advisory Center spotted a possible volcanic plume from Agrigan. Neither USGS nor NOAA have received confirmation of a volcanic source for this anomaly and it is likely the cloud ...
UNASSIGNEDNorthern Mariana IslandsSatellite data and ground-based observations from a field crew and local residents indicate that steam and gas emissions from Mount Pagan Volcano have significantly decreased since March 2015. Based on the decrease in visible emissions and the ...
UNASSIGNEDNorthern Mariana Islands
UNASSIGNEDNorthern Mariana IslandsEquipment failure on 29 December resulted in the loss of seismic data from Sarigan, so we are no longer monitoring the volcano with local data. Repair of monitoring systems will be attempted in late January. No unusual seismicity was observed before ...
UNASSIGNEDNorthern Mariana Islands
UNASSIGNEDNorthern Mariana IslandsSeismic activity indicative of submarine eruptions near Ahyi seamount has ended. The last signal from the Ahyi area received on distant seismometers was recorded on May 17. NOAA scientists working in the vicinity of Ahyi on the research vessel ...
UNASSIGNEDNorthern Mariana Islands
NORMALNorthern Mariana IslandsEquipment failure on 29 December resulted in the loss of seismic data from Anatahan, so we are no longer monitoring the volcano with local data. Repair of monitoring systems will be attempted in late January. No unusual seismicity was observed ...
UNASSIGNEDNorthern Mariana Islands
UNASSIGNEDNorthern Mariana Islands
UNASSIGNEDNorthern Mariana Islands
UNASSIGNEDNorthern Mariana Islands
UNASSIGNEDNorthern Mariana Islands
UNASSIGNEDNevada
UNASSIGNEDOregon
UNASSIGNEDOregon
UNASSIGNEDOregon
NORMALOregon
NORMALOregon
NORMALOregonRECENTLY INSTALLED MONITORING NETWORK AT NEWBERRY VOLCANO, OREGON, NOW FULLY OPERATIONAL During August 2011, scientists and volunteers from the USGS Cascades Volcano Observatory (CVO) installed eight new real-time seismic and deformation (GPS) ...
UNASSIGNEDOregon
NORMALOregon
UNASSIGNEDOregon
UNASSIGNEDOregon
UNASSIGNEDOregon
NORMALOregon
UNASSIGNEDOregon
UNASSIGNEDOregon
UNASSIGNEDOregon
UNASSIGNEDOregon
UNASSIGNEDUtah
UNASSIGNEDUtah
UNASSIGNEDUtah
UNASSIGNEDUtah
NORMALWashington
NORMALWashington
NORMALWashington
NORMALWashingtonPosted via the USGS Volcano Notification Service (VNS) http://volcanoes.usgs.gov/vns/ Analysis of current behavior at Mount St. Helens indicates that the volcano remains active and is showing signs of long-term uplift and earthquake activity, ...
UNASSIGNEDWashington
NORMALWashington
UNASSIGNEDWashington
NORMALWyomingSeismicity During July 2017, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, reports 528 earthquakes were located in the Yellowstone National Park (YNP) region. The ...
UNASSIGNEDAlaska
UNASSIGNEDAleutians
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
UNASSIGNEDAleutians
UNASSIGNEDSouthwest Alaska
UNASSIGNEDAlaska
UNASSIGNEDSoutheast Alaska
UNASSIGNEDWrangell Volcanic Field
UNASSIGNEDInterior Alaska
UNASSIGNEDAlaska Peninsula
UNASSIGNEDWrangell Volcanic Field
UNASSIGNEDAlaska
UNASSIGNEDSouthwest Alaska
UNASSIGNEDAleutians
UNASSIGNEDSeward Peninsula
UNASSIGNEDSeward Peninsula
UNASSIGNEDAlaska Peninsula
UNASSIGNEDSouthwest Alaska
UNASSIGNEDSouthwest Alaska
UNASSIGNEDAlaska
UNASSIGNEDInterior Alaska
UNASSIGNEDAlaska
UNASSIGNEDWrangell Volcanic Field
UNASSIGNEDBering Sea
UNASSIGNEDBering Sea
UNASSIGNEDAlaska Peninsula
UNASSIGNEDSoutheast Alaska
UNASSIGNEDAleutians
UNASSIGNEDWrangell Volcanic Field
UNASSIGNEDSouthwest Alaska
UNASSIGNEDAlaska Peninsula
UNASSIGNEDSouthwest Alaska
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAleutians
UNASSIGNEDWrangell Volcanic Field
Ingenstrem Depression Volcanic FieldUNASSIGNEDAlaska
Western ConesUNASSIGNEDAleutians
UNASSIGNEDWrangell Volcanic Field
UNASSIGNEDWrangell Volcanic Field
UNASSIGNEDAlaska
UNASSIGNEDAlaska
UNASSIGNEDAlaska Peninsula
UNASSIGNEDAlaska Peninsula
UNASSIGNEDCook Inlet-South Central
UNASSIGNEDWrangell Volcanic Field