Current Alerts for U.S. Volcanoes

  • 2014-10-24 15:56:54 Kilauea Warning Orange
  • 2014-10-24 12:10:13 Shishaldin Watch Orange
  • 2014-10-24 12:10:13 Cleveland Advisory Yellow
  • 2014-10-24 17:09:31 Pagan Advisory Yellow
  • 2014-10-24 10:04:38 Cascade Range Normal Green
  • 2014-10-15 13:59:44 Haleakala Normal Green
  • 2014-10-15 14:02:49 Hualalai Normal Green
  • 2014-10-24 12:10:14 Katmai Normal Green
  • 2014-10-15 14:06:13 Mauna Kea Normal Green
  • 2014-10-15 13:57:03 Mauna Loa Normal Green
  • 2014-10-01 12:28:31 Yellowstone Normal Green
  • 2014-10-15 14:04:40 Lo`ihi Unassigned Unassigned

Email IconSubscribe to the Volcano Notification Service

Feed Icon Subscribe to our feed


To view the interactive volcano activity map, please visit our home page.

ALASKA VOLCANO OBSERVATORY WEEKLY UPDATE
Friday, October 24, 2014 12:10 PM PDT (Friday, October 24, 2014 19:10 UTC)


KATMAI VOLCANO (VNUM #312170)
58°16'44" N 154°57'12" W, Summit Elevation 6716 ft (2047 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Strong winds in the Katmai area picked up loose 1912 volcanic ash and carried it east again this week on Thursday (10/23/14). AVO detected a cloud of resuspended ash blowing from the vicinity of Katmai and the Valley of Ten Thousand Smokes across and beyond Kodiak Island. The National Weather Service estimated the top of the plume at 4,000 feet (1,219 m) above sea level.

This phenomenon is not the result of volcanic activity and occurs seasonally in the spring and fall during times of high winds and dry snow-free conditions in the Katmai area and other young volcanic areas of Alaska. No eruption is in progress. All of the volcanoes of the Katmai area (Snowy, Griggs, Katmai, Novarupta, Trident, Mageik, Martin) remain at color code GREEN.

Resuspended volcanic ash should be considered hazardous and could be damaging to aircraft and health. For more information on volcanic ash and human health, visit the following website: http://volcanoes.usgs.gov/ash/.

OTHER ALASKA VOLCANOES

Other Alaska volcanoes show no signs of significant unrest: http://www.avo.alaska.edu/activity/

AVO scientists conduct daily checks of earthquake activity at all seismically-monitored volcanoes, examine web camera and satellite images for evidence of airborne ash and elevated surface temperatures, and consult other monitoring data as needed.

For definitions of Aviation Color Codes and Volcano Alert Levels, see: http://www.avo.alaska.edu/color_codes.php

FOR MORE INFORMATION ON ALASKA VOLCANOES: http://www.avo.alaska.edu

SUBSCRIBE TO VOLCANO ALERT MESSAGES by email: http://volcanoes.usgs.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

Jessica Larsen, Acting Coordinating Scientist, UAFGI
faust@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
CASCADES VOLCANO OBSERVATORY WEEKLY UPDATE
Friday, October 24, 2014 10:04 AM PDT (Friday, October 24, 2014 17:04 UTC)


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: Activity remained at background levels for Cascade Range volcanoes during the past week although storms generated noise on monitoring systems. Field crews made instrument site visits to Mount Hood and Yellowstone.





Mount St. Helens Seismic Information
CVO Alert Archive Search
HAWAIIAN VOLCANO OBSERVATORY CURRENT STATUS REPORT
Friday, October 24, 2014 3:56 PM HST (Saturday, October 25, 2014 01:56 UTC)


KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE

HVO scientists completed a helicopter overflight of the June 27th lava flow early Friday afternoon and have been observing the flow from the ground throughout the day.

Today’s mapping shows that the lava flow has advanced 730 m (800 yd) over the past two days. The leading edge of the flow is moving downslope along two fronts: a narrow finger and a slower-moving and broader lobe that split from the narrow finger and is moving slightly to the SE.

The narrow finger was 50 m (55 yd) wide at its leading edge, which was 135 m (150 yd) from Cemetery Road and advancing about 10 m (11 yd) per hour as of 2 PM Friday. The broader lobe, which is only moving forward by a few meters (yards) per hour, was about 100 m (110 yd) behind the front of the narrow finger and as of 2 PM was 250 m (275 yd) from the point it is projected to cross Cemetery Road if it continues to advance.

About 275 m (300 yd) upslope of Cemetery Road, the narrow finger of lava, which has been restricted by a man-made berm, has now inflated up to the level of the berm and may overtop it, which could send lava closer to the Pāhoa transfer station if it continues to flow downslope.

Upslope of the flow front, near the north border of Ka‘ohe Homesteads, a large breakout, which has been active for the past few days, is widening the SE margin of the flow field.

As part of the overflight, HVO scientists were able to measure the cross sectional area of the lava tube feeding the flow. This measurement suggests that the volume of lava being supplied to the flow from the Puʻu ʻŌʻō vent has increased slightly. The cross-sectional area of the tube measured today—2.3 square meters (2.8 square yards)—is about the same as that measured 2 weeks ago.

Daily updates about Kīlauea's ongoing eruptions, recent images and videos of summit and East Rift Zone volcanic activity, and data about recent earthquakes are posted on the HVO Web site at http://hvo.wr.usgs.gov.

Our next overflight is scheduled for Monday, but HVO scientists will be conducting field work each day to map the advance of the flow and collect other observations. New status reports will be posted as additional data become available, typically each morning and afternoon.

Additional Information:

For a definition of volcano alert levels and aviation color codes: http://volcanoes.usgs.gov/activity/alertsystem/index.php

Maps, photos, Webcam views, and other information about Kīlauea Volcano are available at http://volcanoes.usgs.gov/hvo/activity/kilaueastatus.php. A daily update summary is available by phone at (808) 967-8862.

A map with details of earthquakes located within the past two weeks can be found at http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

HVO Contact Information: askHVO@usgs.gov


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
CALIFORNIA VOLCANO OBSERVATORY MONTHLY UPDATE
Monday, October 6, 2014 12:50 PM PDT (Monday, October 6, 2014 19:50 UTC)


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 September 1, 2014 (0000h PDST) through September 30, 2014 (2359h PDST):
Mt Shasta:: Only one M1.14 earthquake was detected this month. However, on the afternoon of September 20, a large volume of water surged down Mount Shasta's south flank into Mud Creek, entraining debris and inundating the drainage and roads near McCloud, California. USGS CalVO seismologists determined that the event was not triggered by volcanic or seismic activity. The preliminary assessment of scientists at the Shasta-Trinity National Forest is that the debris flow was triggered by rapid release of melting subglacial water from the Konwakiton Glacier and/or rapid release of ponded water from the adjacent Summit Plateau.
Medicine Lake: Three earthquakes of M1.0 or greater were detected. The largest registered was a M1.95.
Lassen Volcanic Center: Three earthquakes of M1.0 or greater were detected. The largest registered was a M1.76.
Clear Lake Volcanic Field: Five earthquakes of M1.0 or greater were detected. The largest registered was a M1.90. [Note: Typical high level of seismicity was observed under the Geysers steam field located at the western margin of CLVF. The largest registered was a M2.72].
Long Valley Volcanic Region: From September 25th to the 28th a robust earthquake swarm occurred in Long Valley Caldera approximately 7 miles east of the town of Mammoth Lakes. During the swarm, there were more than 600 earthquakes of magnitude M1.0 or greater, and over 100 above magnitude M2.0, including five above magnitude M3.0 (maximum M3.54, revised from preliminary value of M3.8). There was no evidence for anomalous ground deformation attributable to subsurface magma migration. Only two small earthquakes were detected along the Mono-Inyo chain, the largest of which was a M1.52. 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 was a M1.98].
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 seven earthquakes of M1.0 or greater. The largest registered M2.65.
Coso Volcanic Field: The typical high level of seismicity was observed, with fourteen earthquakes M1.0 or greater. The largest registered M3.10.

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://volcanoes.usgs.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://volcanoes.usgs.gov/observatories/calvo/. For general information on the USGS Volcano Hazard Program http://volcanoes.usgs.gov. Statewide seismic information for California and Nevada can be found at http://earthquake.usgs.gov/earthquakes/recenteqscanv/.







CalVO Alert Archive Search
NORTHERN MARIANA ISLANDS WEEKLY UPDATE
Friday, October 24, 2014 5:09 PM PDT (Saturday, October 25, 2014 00:09 UTC)


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. A typical steam and gas plume was observed in some satellite images 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://hvo.wr.usgs.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://volcanoes.usgs.gov/activity/alertsystem/index.php

SUBSCRIBE TO VOLCANO ALERT MESSAGES by email: http://volcanoes.usgs.gov/vns/

CONTACT INFORMATION:
USGS Northern Mariana Duty Scientist (808) 967-8815
http://volcano.wr.usgs.gov/cnmistatus.php

CNMI Homeland Security and Emergency Management Office (670) 664-2216
http://www.cnmihsem.gov.mp/






NMI Alert Archive Search
YELLOWSTONE VOLCANO OBSERVATORY MONTHLY UPDATE
Wednesday, October 1, 2014 12:28 PM MDT (Wednesday, October 1, 2014 18:28 UTC)


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://www.unavco.org/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