Eruption of Mt. Redoubt Volcano, Alaska ALERT: ADVISORY; YEL

[Dionne]

AVO reporting a "high intensity volcanic tremor" lasting 6 minutes at 2:44 AM AST this morning. Steam plume to 2000'. Although, NO eruption reported.

[lurkey]

alaska_avo Unrest at Redoubt Volcano continues. Seismic activity remains elevated and is well above background levels. A vapor plume is intermittently visible in the AVO web camera. It appears to rise no higher than the volcano's summit

[JonathanBelles]

A sustained burst of volcanic tremor has just occurred, but this did not result in any eruptive activity and no ash emission has occurred.

AVO is monitoring and evaluating the situation closely.

Redoubt is still at aviation color code ORANGE and volcano alert level WATCH
_______________________________________________________
Earthquake activity is very much up, but camera is completely blocked so it seems that ground motions is most of what we have to go on away from the volcano.

[lurkey]

ALASKA VOLCANO OBSERVATORY CURRENT STATUS REPORT
Saturday, February 7, 2009 11:55 AM (Saturday, February 7, 2009 20:55 UTC)


REDOUBT VOLCANO (CAVW #1103-03-)
60°29'7" N 152°44'38" W, Summit Elevation 10197 ft (3108 m)
Current Aviation Color Code: ORANGE
Current Volcano Alert Level: WATCH

Unrest at Redoubt Volcano continues, though no eruption has yet occurred. Volcanic tremor is ongoing with variable amplitudes. Clear webcam images show a small steam plume. AVO personnel are making an observation and gas overflight today.

[Dionne]

3:16 AM AST
AVO reports "continuous volcanic tremors at elevated levels"

Redoubt.....appropriately named.....needs to go ahead and erupt. The Iditarod is now less than a month away.

[JonathanBelles]

Redoubt Volcano has not erupted and unrest continues. A pilot reported seeing a white vertical steam plume. Volcanic tremor continues with variable amplitudes. A regional earthquake centered NW of Willow showed up on all of Redoubt's seismic stations.

[lurkey]

Redoubt: Unrest at Redoubt Volcano continues. No eruption has occurred. Seismicity at the volcano is currently characterized by continuous shaking, or tremor. AVO staff were in the field today making visual observations and improving the monitoring network.AVO staff members continue to monitor the volcano 24 hours a day

[cycloneye]

Trying to wake up:

[JonathanBelles]

Interesting. The alert level is back up to Orange as well!

[lurkey]

March 22 Seismicity remains elevated with several small events occurring each minute. There are some small events registered on more than one instrument. We are watching closely.

Latest tweets

[Dionne]

"40 to 50 events per hour" and "increased dramatically" is some of the terminology being used at the observatory.


Events now large enough to be recorded outside the Redoubt network of sensors.

AVO has made 6 updates within the last 10 hours.

Get ready Anchorage and all the Kenai peninsula.

Correction: NCT abd DFR are part of the permanent group of 6 sensors for Redoubt. They are both on the far north flank.

[lurkey]

alaska_avo Seismicity rates have increased dramatically over the last 48 hours. Currently, the earthquake rate is about 40 to 50 events per hour. Many of these events are large enough to be recorded at the more distal stations of the Redoubt network, including NCT and DFR.At present, much of the volcano is in view in the hut web camera and small steam/gas plume is visible


Alert level raised for Alaska volcano

ANCHORAGE, Alaska – Increased earthquake activity has prompted scientists to raise the alert level for Alaska's Mount Redoubt volcano.

Geologists at the Alaska Volcano Observatory said Sunday that seismic activity had increased over the past two days. On Sunday morning, 40 to 50 earthquakes were being recorded every hour.
Scientists said conditions may evolve rapidly and culminated in an eruption within days to weeks at the volcano roughly 100 miles southwest of Anchorage.

A steam plume rising about 1,000 feet above the mountain peak was observed Saturday.

The observatory had warned in late January that an eruption could occur at any time.

[Dionne]

Something happened at 1:05 PM AKDT.

Gas and ash plume.......

[lurkey]

alaska_avo Seismicity rates have increased dramatically over the last 48 hours. Currently, the earthquake rate is up to 26 events per 10-minute period. Many of these events are large enough to be recorded at the more distal stations of the Redoubt network, including NCT and DFR.Partly cloudy views of the volcano from the hut web camera over the last hour show a small steam/gas plume at the summit region

[Dionne]

Something happened at 1:05 PM AKDT.

Gas and ash plume.......

Yep.....cam just updated. A small plume at the time of pic.

[Dionne]

Trying to wake up:

This cam updates every 4 hours for 5 minutes.

[HurricaneBill]

Redoubt has erupted.

Alaska volcano Mount Redoubt erupts 3 times

[Chacor]

The Anchorage VAAC (Volcanic Ash Advisory Centre) reports volcanic ash to FL500 (50,000 ft).

[Chacor]

FVAK23 PAWU 230826
VAAAK3
VA ADVISORY

DTG: 20090323/0820Z

VAAC: ANCHORAGE

VOLCANO: REDOUBT 1103-03

PSN: N6029 W15245

AREA: SOUTH CENTRAL ALASKA

SUMMIT ELEV: 10198 FT/3109 M

ADVISORY NR: 2009-1

INFO SOURCE: GOES/AVO/PILOT REPORT/RADAR/

AVIATION COLOUR CODE: RED

ERUPTION DETAILS: EXPLOSIVE ERUPTION OF MT REDOUBT BEGAN AT APPROX
0638 UTC WITH SUBSEQUENT INTERMITTENT ACTIVITY CONTINUING.

OBS VA DTG: 23/0800 UTC

OBS VA CLOUD: SFC/FL500 N6107 W15322 - N6105 W15136 - N6007 W15207 -
N6013 W15328 - N6107 W15322 MOVING N 65 KNOTS.

FCST VA CLOUD +6 HR: 23/1415Z SFC/FL400 N6251 W15346 - N6147 W15024 -
N5956 W14954 - N6047 W15552 - N6251 W15346

FCST VA CLOUD +12 HR: 23/2015Z SFC/FL400 N6340 W14902 - N6150 W14529
- N5957 W15103 - N6107 W15504 - N6340 W14902

FCST VA CLOUD +18 HR: 24/0215Z SFC/FL400 N6459 W14709 - N6311 W14108
- N6007 W15112 - N6135 W15535 - N6459 W14709

REMARKS: RADAR INDICATES VA TO FL500. PIREPS VERIFED ABV FL400.

NXT ADVISORY: 20090323/1415Z

TRENZ MAR 2009

[Chacor]

WWAK71 PAFC 231040
NPWAER

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
240 AM AKDT MON MAR 23 2009

AKZ145-231600-
/X.EXT.PAFC.AF.Y.0001.000000T0000Z-090323T1600Z/
SUSITNA VALLEY-
INCLUDING THE CITIES OF...TALKEETNA...WILLOW...CANTWELL
240 AM AKDT MON MAR 23 2009

...ASHFALL ADVISORY NOW IN EFFECT UNTIL 8 AM AKDT THIS MORNING...

THE ASHFALL ADVISORY IS NOW IN EFFECT UNTIL 8 AM AKDT THIS
MORNING.

REDOUBT VOLCANO AT 60.5N 152.7W HAS ERUPTED SEVERAL TIMES DURING
THE NIGHT. LIGHT ASHFALL HAS ALREADY BEEN REPORTED AT SKWENTNA.
LIGHT ASHFALL IS POSSIBLE THROUGHOUT THE SUSITNA VALLEY THIS
MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ASHFALL ADVISORY MEANS THAT ASH WILL BE DEPOSITED IN THE
ADVISORY AREA. PEOPLE IN AREAS OF ASHFALL SHOULD SEAL WINDOWS AND
DOORS. PROTECT ELECTRONICS AND COVER AIR INTAKES AND OPEN WATER
SUPPLIES. MINIMIZE DRIVING. LISTEN TO YOUR RADIO STATION FOR
FURTHER INFORMATION.