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

[lurkey]

alaska_avo There was a small explosion at Redout at 16:07 AKDT (00:07 UTC). There was a pilot report that put the ash cloud to 25,000 ft. At this time, continuous low level emissions of steam, volcanic gases, and ash continue at Redoubt Volcano. Seismicity consists of volcanic tremor and occasional discrete earthquakes. Satellite images from this morning show a broad layer of volcanic haze extending east of the volcano over the Kenai Peninsula, the Anchorage Bowl, and the Matanuska-Susitna Valley. about 16 minutes ago from Twittermail

[lurkey]

Picture from yesterday

At 04:34 AKDT (12:34 UTC) the Redoubt network recorded signals from an Ml 3.8 earthquake located 43 miles (69 km) NW of Anchorage. This was not related to volcanic activity at Redoubt.

For more information about this earthquake, see the Alaska Earthquake Information Center website at:
http://www.aeic.alaska.edu/recent/sub/index.html



2009-04-01 04:15:03
Continuous low level emissions of steam, volcanic gases, and ash continue at Redoubt Volcano. Seismicity consists of volcanic tremor and occasional discrete earthquakes.

Please see the National Weather Service Redoubt coordination page http://pafc.arh.noaa.gov/volcano.php for the latest ash fall information.

[lurkey]

alaska_avo Low elevation gas and ash emissions continue from the volcano, and are now visible in webcam images. Weak volcanic tremor is ongoing, punctuated by small, discrete earthquakes. about 2 hours, 56 minutes ago from Twittermail

[Chacor]

FVAK23 PAWU 011611
VAAAK3
VA ADVISORY

DTG: 20090401/1615Z

VAAC: ANCHORAGE

VOLCANO: REDOUBT 1103-03

PSN: N6029 W15245

AREA: SOUTH CENTRAL ALASKA

SUMMIT ELEV: 10198 FT/3109 M

ADVISORY NR: 2009-52

INFO SOURCE: SATELLITE/AVO/PILOT REPORT
AVIATION COLOUR CODE: RED

ERUPTION DETAILS: LOW LEVEL EMISSIONS OF VA AND VOLCANIC GASES
CONTINUE.

OBS VA DTG: 01/1420 UTC

OBS VA CLOUD: SFC/FL200 N6121 W14557 - N6019 W14532 - N6013 W15251 -
N6032 W15246 - N6121 W14557 MOVING E 30 KTS.

FCST VA CLOUD +6 HR: 01/2215Z SFC/FL200 N6114 W14549 - N6008 W14520 -
N6007 W15247 - N6029 W15253 - N6114 W14549

FCST VA CLOUD +12 HR: 02/0415Z SFC/FL200 N6052 W14526 - N5943 W14522
- N6007 W15247 - N6027 W15259 - N6052 W14526

FCST VA CLOUD +18 HR: 02/1015Z SFC/FL200 N6047 W14534 - N5932 W14522
- N6002 W15259 - N6029 W15247 - N6047 W14534

REMARKS: VOLCANO CONTINUES LOW LEVEL GAS AND ASH EMISSIONS. SMALL VA
PLUME NOTED ON 1420 UTC AVHRR IMAGERY EXTENDING FROM VOLCANO TO E
PAEN THEN LOST VA SIGNAL AGAINST GROUND CLUTTER BACKGROUND NOISE OF
NRN KENAI PEN. PIREPS S OF PANC AND VCY TURNAGAIN ARM TO WRN PRINCE
WILLIAM SOUND REPORT SLIGHT SULPHUR SMELL.

NXT ADVISORY: 20090401/2215Z

TRENZ APR 2009

[lurkey]

Ash and steam cloud from Redoubt volcano as seen from Cannery Road in Kenai.
Picture Date: March 31, 2009 19:15:00 AKDT
Image Creator: Sutton, Neil;


alaska_avo Low elevation gas, steam and ash emissions continue from the volcano.Weak volcanic tremor is ongoing, punctuated by small, discrete earthquakes. about 1 hour, 4 minutes ago from Twittermail

[Chacor]

FVAK23 PAWU 021003
VAAAK3
VA ADVISORY

DTG: 20090402/1000Z

VAAC: ANCHORAGE

VOLCANO: REDOUBT 1103-03

PSN: N6029 W15245

AREA: SOUTH CENTRAL ALASKA

SUMMIT ELEV: 10198 FT/3109 M

ADVISORY NR: 2009-55

INFO SOURCE: GOES/AVO/SFC REPORTS/RADAR

AVIATION COLOUR CODE: RED

ERUPTION DETAILS: LOW LEVEL VA EMISSIONS CONTINUE

OBS VA DTG: 02/0945 UTC

OBS VA CLOUD: SFC/FL150 N6059 W15016 - N6019 W15002 - N6018 W15244 -
N6035 W15251 - N6059 W15016 MOVING E 40 KTS.

FCST VA CLOUD +6 HR: 02/1600Z SFC/FL150 N6110 W15036 - N6028 W15005 -
N6015 W15245 - N6038 W15302 - N6110 W15036

FCST VA CLOUD +12 HR: 02/2200Z SFC/FL150 N6119 W15050 - N6031 W15009
- N6019 W15255 - N6038 W15302 - N6119 W15050

FCST VA CLOUD +18 HR: 03/0400Z SFC/FL150 N6131 W15058 - N6044 W14959
- N6013 W15251 - N6038 W15302 - N6131 W15058

REMARKS: LIGHT VA FALL REPORTED AT KENAI FSS

NXT ADVISORY: 20090402/1600Z

ERW APR 2009

[lurkey]

alaska_avo The number of small earthquakes per hour has continued at the elevated rate that first appeared about 8:00 AM today. Low elevation steam emissions likely continue, though the summit is currently obscured in the most recent webcam views. about 2 hours, 19 minutes ago from Twittermail


Bringing link from page 4



Thermal infrared image showing the likely base of a new lava dome in the crater of Redoubt Volcano. While the dome is completely obscured by ash and steam in the visible photographs, the heat of the new lava can often be detected by the thermal infrared camera. The image also shows a trail of hot block and ash confined to the canyon below the summit. For an annotated version of this image with an index photo, please see image at http://www.avo.alaska.edu/image.php?id=17703
Picture Date: March 31, 2009 13:44:07 AKDT
Image Creator: Wessels, Rick;

Image courtesy of AVO/USGS.
Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image.

[Chacor]

FVAK23 PAWU 030955
VAAAK3
VA ADVISORY

DTG: 20090403/1000Z

VAAC: ANCHORAGE

VOLCANO: REDOUBT 1103-03

PSN: N6029 W15245

AREA: SOUTH CENTRAL ALASKA

SUMMIT ELEV: 10198 FT/3109 M

ADVISORY NR: 2009-59

INFO SOURCE: GOES/AVO/PILOT REPORTS/RADAR

AVIATION COLOUR CODE: RED

ERUPTION DETAILS: ONLY STEAM IS BEING EMITTED NOW

OBS VA DTG: 03/0945 UTC

OBS VA CLOUD: NO VA EXP

FCST VA CLOUD +6 HR: 03/1600Z NO VA EXP

FCST VA CLOUD +12 HR: 03/2200Z NO VA EXP

FCST VA CLOUD +18 HR: 04/0400Z NO VA EXP

REMARKS: AN EXPLOSIVE ERUPTION IS POSSIBLE AT ANY TIME

NXT ADVISORY: 20090403/1600Z

ERW APR 2009

[Dionne]

Mud flows into Drift river oil terminal. 6.3 million gallons of crude is stored at this facility. Plans underway to remove crude to "safe levels".

If the crude is released into Cook Inlet as a result of volcanic activity the environmental damage would be significant. Five species of Salmon return every year into Cook Inlet by the millions. Not to mention all the other wildlife.......

EDIT: Google Drift river oil for pics.

[lurkey]

Mud flows into Drift river oil terminal. 6.3 million gallons of crude is stored at this facility. Plans underway to remove crude to "safe levels".

If the crude is released into Cook Inlet as a result of volcanic activity the environmental damage would be significant. Five species of Salmon return every year into Cook Inlet by the millions. Not to mention all the other wildlife.......

EDIT: Google Drift river oil for pics.

Oil from the Drift River Terminal near Redoubt to be moved

Some pictures here



More Redoubt images


alaska_avo Small, repeating earthquakes are continuing at the rate of 3-4/minute. Low elevation steam emissions are likely continue. A small plume is barely visible on cloudy satellite images. The summit is completely obscured by clouds in the most recent webcam views. about about 6 hours ago from web

[lurkey]

2009-04-03 08:01:56

Small, repeating earthquakes are continuing at the rate of 3-4/minute. Larger, discrete earthquakes are continuing to occur at a rate of 2-6/hr. Low elevation steam and/or ash emissions are likely to continue.

[lurkey]

alaska_avo Small, shallow repeating volcanic earthquakes indicative of lava dome growth are continuing at the rate of 3-4/minute. These earthquakes are most prominent on station REF. Cloudy conditions currently preclude views of the volcano in the AVO webcam. about 2 hours, 4 minutes ago from Twittermail

[lurkey]

alaska_avo The eruption of Redoubt Volcano continues. AVO has just lowered the alert level to WATCH and aviation color code to ORANGE; the intensity of ash-production has decreased.Small, shallow repeating volcanic earthquakes indicative of lava dome growth are continuing at the rate of 3-4/minute. These earthquakes are most prominent on station REF. Cloudy conditions currently preclude views of the volcano in the AVO webcam. about 41 minutes ago from Twittermail

AVO/USGS Volcanic Activity Notice


Issued: Friday, April 3, 2009, 11:44 AM AKDT (20090403/1944Z)
Source: Alaska Volcano Observatory
Notice Number: 2009/A31
Location: N 60 deg 29 min W 152 deg 44 min
Elevation: 10197 ft (3108 m)
Area: Cook Inlet-South Central Alaska

Volcanic Activity Summary: The eruption of Redoubt Volcano continues. Over the past several days, the intensity of ash-production has decreased. Current observations indicate a lava dome is growing in the summit crater. Therefore, we are lowering the alert level and aviation color code.

The 2009 eruption is now characterized by continuous emission of steam, volcanic gas, and variable amounts of ash. These processes are occurring as effusion of lava in the summit crater produces a lava dome. While at this level of activity, trace amounts of ash and a perceptible volcanic haze layer may be intermittently present throughout south-central Alaska.

A growing lava dome is inherently unstable; a sudden dome collapse or explosion can occur with no warning and produce a more voluminous ash cloud that rises to elevations above 25,000 feet. If such an event is detected, AVO would issue appropriate warnings.

Recent Observations:
[Volcanic cloud height] Over the last few days, a diffuse cloud of volcanic gas, ash, and steam is rising to variable altitudes over the volcano, but mostly less than 15,000 feet above sea level. At times of more vigorous ash production, the cloud has risen as high as 25,000 feet.
[Ash fall] Trace amounts of ash fall (less than 0.8 mm or less than 1/32 inch) have been reported at Kenai and at Valdez. The area in the immediate vicinity of the volcano is blanketed by a thin layer of ash visible in the AVO web cameras.
[Lava flow/dome] AVO overflights and photography have confirmed that a lava dome is actively growing in the summit crater. Occasional avalanches of hot blocks tumbling from the dome are traveling a short distance down the north flank of the volcano.
[Mudflow] To our knowledge, no mudflows have occurred in the Drift River since the last significant explosion.
[Other volcanic cloud information] An intermittent volcanic haze has been reported over south central Alaska. This cloud likely consists of water vapor, small quantities of volcanic gases, aerosols, and ash.

Hazard Analysis:
[Ash fall] While this type of activity persists, low-level clouds consisting of minor amounts of ash and volcanic gas may extend downwind for tens of miles and drop trace amounts of ash on communities.
[Ash cloud] Diffuse clouds containing trace amounts of ash and volcanic gas may be present downwind of the volcano.
[Lava flow/dome] A growing lava dome is inherently unstable and may produce explosions or avalanches of hot debris at any time.
[Mud flow] Additional mudflows may be produced by dome collapse events.

Remarks: Heavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,197 feet above sea level. Recent eruptions occurred in 1902, 1966-68, and 1989-90. The 1989-90 eruption produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 eruption affected air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other nearby communities.

Contacts: Tom Murray, Scientist-in-Charge, USGS
tlmurray@usgs.gov (907) 786-7497

Steve McNutt, Coordinating Scientist, UAF
steve@giseis.alaska.edu (907) 474-7131

Next Notice: A new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at
http://www.avo.alaska.edu

[Chacor]

Another eruption within the past hour, back at red.


FVAK23 PAWU 041435
VAAAK3
VA ADVISORY

DTG: 20090404/1430Z

VAAC: ANCHORAGE

VOLCANO: REDOUBT 1103-03

PSN: N6029 W15245

AREA: SOUTH CENTRAL ALASKA

SUMMIT ELEV: 10198 FT/3109 M

ADVISORY NR: 2009-65

INFO SOURCE: GOES/AVO/RADAR

AVIATION COLOUR CODE: RED

ERUPTION DETAILS: EXPLOSIVE ERUPTION AT 04/1400UTC

OBS VA DTG: 04/1415 UTC

OBS VA CLOUD: SFC/FL500 N6044 W15250 - N6022 W15118 - N5938 W15140 -
N5959 W15328 - N6044 W15250 MOVING SE 80 KNOTS.

FCST VA CLOUD +6 HR: 04/2030Z SFC/FL500 N6044 W15232 - N5837 W14808 -
N5726 W15019 - N5956 W15349 - N6044 W15232

FCST VA CLOUD +12 HR: 05/0230Z SFC/FL500 N6045 W15235 - N5755 W14639
- N5640 W14940 - N5954 W15404 - N6045 W15235

FCST VA CLOUD +18 HR: 05/0830Z SFC/FL500 N6048 W15237 - N5759 W14643
- N5644 W14936 - N6000 W15409 - N6048 W15237

REMARKS:

NXT ADVISORY: 20090404/2030Z

TRENZ APR 2009

[lurkey]

Thanks, Chacor

alaska_avo At 06:00 AKDT there was a significant explosive event at Redoubt. An ash cloud has reached at least 50,000 feet above sea level and is spreading towards the south and east. AVO seismometers indicate a lahar in the Drift River Valley. about 1 hour, 23 minutes ago from Twittermail

From NWS: http://pafc.arh.noaa.gov/vo... "....Minor ashfall can be expected from Ninilchik southward through mid morning....."

2009-04-04 06:58:38
The Mt. Redoubt alert level is currently WARNING and aviation color code is RED.

At 06:00 AKDT there was a significant explosive event at Redoubt. An ash cloud has reached at least 50,000 feet above sea level and is heading SE. The National Weather Service has issued an ash advisory lasting to 10am AKDT for areas from south of Ninilchik.

Lightning was observed in the eruption cloud and
AVO seismometers indicate a lahar in the Drift River Valley.

Strong, but diminishing seismic activity is continuing as of 07:35 AKDT.


Flash Flood Warning

WGAK58 PAFC 041413
FFWAFC
AKZ171-042015-
/O.NEW.PAFC.FF.W.0007.090404T1413Z-090404T2015Z/
/00000.0.OT.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ANCHORAGE AK
613 AM AKDT SAT APR 4 2009

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
THE DRIFT RIVER

* UNTIL 1215 PM AKDT

* DUE TO THE ERUPTION OF MOUNT REDOUBT VOLCANO.

THE ERUPTION OF MOUNT REDOUBT CAN CAUSE MELTING SNOW AND ICE ON THE
MOUNTAIN AND RESULT IN HIGH WATER AND FLASH FLOODING ALONG THE DRIFT
RIVER DRAINING FROM THE MOUNTAIN.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 6068 15281 6045 15236 6033 15243 6042 15296

$$

JCA

WWAK71 PAFC 041428
NPWAER

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
628 AM AKDT SAT APR 4 2009


AKZ121-041800-
/X.NEW.PAFC.AF.Y.0011.090404T1428Z-090404T1800Z/
WESTERN KENAI PENINSULA-
INCLUDING THE CITIES OF...KENAI...SOLDOTNA...HOMER...
COOPER LANDING
628 AM AKDT SAT APR 4 2009

...ASHFALL ADVISORY IN EFFECT UNTIL 10 AM AKDT THIS MORNING...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED AN ASHFALL
ADVISORY...WHICH IS IN EFFECT UNTIL 10 AM AKDT THIS MORNING.

REDOUBT VOLCANO ERUPTED AROUND 600 AM THIS MORNING AND THE ASH
CLOUD IS MOVING TO THE SOUTHEAST. MINOR ASHFALL CAN BE EXPECTED
FROM NINILCHIK SOUTHWARD THROUGH MID 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.

&&

$$

[lurkey]

alaska_avo The significant explosive event at 06:00 AKDT has ended. Continuing seismic activity and web camera images indicate that low level emissions of steam, gas, and some volcanic ash are continuing to be emitted at the volcano at altitudes of < 20,000\'.Ashfall resulting from the 06:00 AKDT event has been reported in Homer, Anchor Point, and Seldovia. The Mt. Redoubt alert level is currently WARNING and aviation color code is RED.For more information on ash falls, see the National Weather Service site:http://pafc.arh.noaa.gov/volcano.php about 35 minutes ago from Twittermail

[cycloneye]

[lurkey]

2009-04-05 08:55:27

Small earthquakes and intermittent tremor continue at Redoubt. The AVO web camera shows a continuous plume rising to less than 15,000 feet above sea level and drifting southeast.

The volcano remains at aviation color code RED and alert level WARNING.

[lurkey]

alaska_avo The eruption of Redoubt continues, and the volcano remains at aviation color code RED and alert level WARNING. Small earthquakes and intermittent tremor continue at Redoubt. There is a continuous plume composed primarily of water vapor and gas, possibly with some ash, rising above the summit to less than 15,000 feet and drifting east. about 2 minutes ago from Twittermail

[lurkey]

alaska_avo Redoubt volcano has been downgraded to aviation color code ORANGE and alert level WATCH.Small earthquakes and intermittent tremor continue.Intermittent webcam views earlier today show a continuous steam plume. The views from AVO webcams are currently impaired as a result of clouds. about 16 minutes ago from Twittermail