Current Alerts for U.S. Volcanoes
2014-10-01 17:42:29
Kilauea
Warning Orange
2014-10-01 14:35:37
Shishaldin
Watch Orange
2014-10-01 14:35:37
Cleveland
Advisory Yellow
2014-09-26 08:30:47
Pagan
Advisory Yellow
2014-09-26 15:53:47
Cascade Range
Normal Green
2014-09-04 12:06:15
Haleakala
Normal Green
2014-09-04 12:06:15
Hualalai
Normal Green
2014-09-04 12:06:15
Mauna Kea
Normal Green
2014-09-04 12:06:15
Mauna Loa
Normal Green
2014-09-12 15:44:56
Spurr
Normal Green
2014-10-01 12:28:31
Yellowstone
Normal Green
2014-09-04 12:06:15
Lo`ihi
Unassigned Unassigned
2014-09-04 10:58:02
Semisopochnoi
Unassigned Unassigned
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SHISHALDIN VOLCANO (VNUM #311360)
54°45'19" N 163°58'16" W, Summit Elevation 9373 ft (2857 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Low-level eruptive activity is likely continuing. Strongly elevated surface temperatures were observed overnight in multiple satellite images. Seismic activity and airwaves continue at a low rate. No activity observed in partly cloudy web camera images.
CLEVELAND VOLCANO (VNUM #311240)
52°49'20" N 169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
No activity observed in mostly cloudy satellite or partly cloudy web camera images. Nothing significant noted in seismic or infrasound data.
OTHER ALASKA VOLCANOES
Other Alaska volcanoes show no signs of significant unrest: http://http://www.zjjv.com//gs.gov/vns/
FOLLOW AVO ON FACEBOOK: https://facebook.com/alaska.avo
FOLLOW AVO ON TWITTER: https://twitter.com/alaska.avo
CONTACT INFORMATION:
John Power, Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497
Jeff Freymueller, Coordinating Scientist, UAFGI
jeff.freymueller@gi.alaska.edu (907) 322-4085
The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.
AVO Alert Archive Search
CASCADE RANGE VOLCANOES
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal levels of background seismicity. 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 unusual activity was noted at any of the Washington and Oregon Cascade volcanoes during the week. Volcano seismicity remained at background levels.
Mount St. Helens Seismic Information
CVO Alert Archive Search
HVO/USGS Volcanic Activity Notice
Volcano: Kilauea (VNUM #332010)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE
Issued: Wednesday, October 1, 2014, 5:42 PM HST (20141002/0342Z)
Source: Hawaiian Volcano Observatory
Notice Number: 2014/H11
Location: N 19 deg 25 min W 155 deg 17 min
Elevation: 4091 ft (1247 m)
Area: HI Hawaii and Pacific Ocean
Volcanic Activity Summary: The June 27th flow remains active with a narrow flow moving about 30 m (100 ft) ahead of the previously stalled flow front and lava breakouts occurring from the lava tube about 8 km (5 mi) behind the flow front near where lava entered a crack system on August 18. The narrow flow front moved about 75 m/day (245 ft/day) since September 29, overtaking the stalled flow front during the past 24 hours. The leading edge is 2.3 km (1.4 miles) upslope from Apa`a St. and 3.3 km (2.1 mi) from Pāhoa Village Road, and approximately 16.4 km (10.2 miles) straight-line distance from the vent. Because this flow is moving very slowly and lava discharge from the vent remains low, we do not offer a projection of its future movement. Our next overflight is scheduled for Friday.
Pāhoa town is in the Puna District of the County of Hawai`i.
Recent Observations:
[Lava flow] A narrow flow has moved about 30 m (100 ft) past the stalled flow front in the past 24 hours. This flow has moved about 150 m (490 ft) since September 29.
Hazard Analysis:
[Lava flow] The June 27th lava flow from Puu Ōō vent is active with fresh lava being supplied to the flow front. The flow is slowly advancing downslope toward Pāhoa town.
Remarks: The Puu Ōō vent in the East Rift Zone of Kīlauea Volcano began erupting on January 3, 1983, and has continued erupting for more than 31 years, with the majority of lava flows advancing to the south. Over the past two years, lava flows have issued from the vent toward the northeast. The June 27th flow is the most recent of these flows and the first to threaten a residential area since 2010-2011. On June 27, 2014, new vents opened on the northeast flank of the Puu Ōō cone and fed a narrow lava flow to the east-northeast. On August 18, the flow entered a ground crack, traveled underground for several days, then resurfaced to form a small lava pad. This sequence was repeated three more times over the following days with lava entering and filling other cracks before reappearing at the surface, in two of the cases farther downslope. Lava emerged from the last crack on September 6, forming a surface flow that initially moved to the north, then to the northeast, at a rate of 400 m/day (1,300 ft/day). The flow slowed thereafter and, between September 12 and 19, the rate of advancement varied, averaging 225 m/day (740 ft/day). The flow front stalled by September 22, and breakouts immediately behind the flow front advanced less than 30 m/day (100 ft/day) between September 26 and 29. A narrow flow moved 30 m (100 ft) ahead of the stalled flow front during the past 24 hours.
Contacts: HVO media contact
askHVO@usgs.gov
Next Notice: A new VAN will be issued if conditions change significantly or alert levels are modified. While this VAN is in effect, regularly scheduled updates are posted at http://http://www.zjjv.com//gs.gov/activity/kilaueastatus.php
The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.
HVO Alert Archive Search
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 August 1, 2014 (0000h PDST) through August 31, 2014 (2359h PDST):
Mt Shasta:: No earthquakes of M1.0 or greater were detected.
Medicine Lake: No earthquakes of M1.0 or greater were detected.
Lassen Volcanic Center: One earthquake of M2.29 was detected.
Clear Lake Volcanic Field: Seven earthquakes of M1.0 or greater were detected. The largest registered was M2.22. [Note: Typical high level of seismicity was observed under the Geysers steam field located at the western margin of CLVF. The largest registered was M2.87].
Long Valley Volcanic Region: Twelve small earthquakes M1.0 or greater occurred in Long Valley Caldera. The largest caldera quake was a M2.21. Only one magnitude M1.17 earthquake was detected along the Mono-Inyo chain. No earthquakes of M1.0 or greater were detected under Mammoth Mountain. [Note: The typical high level of seismicity was observed south of the caldera in the Sierra Nevada range. The largest registered M2.80].
Ubehebe Craters: No earthquakes at or above M1.0 were detected.
Salton Buttes:The typical high level of seismicity was observed in the vicinity of the buttes, with eleven earthquakes of M1.0 or greater. The largest registered M2.14.
Coso Volcanic Field:The typical high level of seismicity was observed, with 12 earthquakes M1.0 or greater. The largest registered M1.97.
The U.S. Geological Survey will continue to monitor these volcanoes closely and will issue additional updates and changes in alert level as warranted. For a definition of alert levels see http://http://www.zjjv.com//gs.gov/activity/alertsystem/icons.php.
As part of the U.S. Geological Survey's Volcano Hazards Program, the California Volcano Observatory aims to advance scientific understanding of volcanic processes and lessen the harmful impacts of volcanic activity in the volcanically active areas of California and Nevada. For additional USGS CalVO volcano information, background, images, and other graphics visit http://http://www.zjjv.com//gs.gov/observatories/calvo/. For general information on the USGS Volcano Hazard Program http://http://www.zjjv.com//gs.gov. Statewide seismic information for California and Nevada can be found at http://http://www.zjjv.com//gs.gov/earthquakes/recenteqscanv/.
CalVO Alert Archive Search
Report prepared by the U.S. Geological Survey.
PAGAN VOLCANO (VNUM #284170)
18°7'48" N 145°48' E, Summit Elevation 1870 ft (570 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Seismic, infrasound, and web camera data from Pagan Volcano are temporarily unavailable. The typical steam and gas plume was observed in satellite images during occasional periods of good weather over the past week.
Volcanic gas from Pagan may be noticed downwind of the volcano as a distinctive sulfurous odor. Additional information about volcanic gas and vog can be found on the web at this address: http://http://www.zjjv.com//gs.gov/hazards/FAQ_SO2-Vog-Ash/main.html
Access to the island may be restricted by the CNMI government. Contact the EMO for the latest information.
OTHER NORTHERN MARIANA ISLAND VOLCANOES
Other Northern Mariana Island volcanoes volcanoes show no signs of significant unrest.
USGS conduct daily checks of earthquake activity at Pagan, Sarigan, and Anatahan volcanoes.
For definitions of Aviation Color Codes and Volcano Alert Levels, see: http://http://www.zjjv.com//gs.gov/activity/alertsystem/index.php
SUBSCRIBE TO VOLCANO ALERT MESSAGES by email: http://http://www.zjjv.com//gs.gov/vns/
CONTACT INFORMATION:
USGS Northern Mariana Duty Scientist (808) 967-8815
http://http://www.zjjv.com//gs.gov/cnmistatus.php
CNMI Homeland Security and Emergency Management Office (670) 664-2216
http://http://www.zjjv.com//mihsem.gov.mp/
NMI Alert Archive Search
YELLOWSTONE VOLCANO (VNUM #325010)
44°25'48" N 110°40'12" W, Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Seismicity
During September 2014, the University of Utah Seismograph Stations reports 71 earthquakes were located in the Yellowstone National Park (YNP) region. The largest event was a small earthquake of magnitude 3.2 on September 24, at 3:41 AM MDT, located about 9 miles south of Mammoth, YNP. There were no earthquake swarm sequences during the month of September.
Yellowstone earthquake activity in September is at low background levels.
Ground deformation
Deformation in north-central Yellowstone continues, although the subsidence rate at the NRWY GPS station has slowed considerably. The total subsidence now comes close to matching the amount of uplift that had occurred previous to April 2014.
Caldera GPS stations continue to record the pattern of uplift that has persisted since the beginning of 2014. An example can be found at: http://http://www.zjjv.com///instrumentation/networks/status/pbo/data/HVWY (click on Static Plots / Time Series)
The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity 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.
YVO Member agencies: USGS, Yellowstone National Park, University of Utah, University of Wyoming, UNAVCO, Inc., Wyoming State Geological Survey, Montana Bureau of Mines and Geology, Idaho Geological Survey
CONTACT INFORMATION:
Jacob Lowenstern, Scientist-in-Charge
jlwnstrn@usgs.gov
YVO Alert Archive Search
