Soufrière Hills Daily Update for 9/13/07

Current Soufrière Hills status from MVO:

13 September 2007

The alert level remains at 4.

Measurable activity of the Soufrière Hills Volcano has remained low with no significant change over the last 24 hours.

Popocatepetl Daily Update for 9/13/07

Current Popocatepetl status from CENAPRED:

September 13 11:30 h (16:30 GMT)

In the last 24 hours the monitoring system of Popocatepetl volcano registered only 2 exhalations accompanied by steam and gas emissions. The other monitoring parameters remain without important changes.

At this moment we can observe the volcano with a steam and gas emission (see imagen).

A vertical photo of the crater, obtained by the Dirección General de Carreteras Federales (SCT) on March 6, shows that the dimensions of the lava dome inside the crater do not have a significative change in comparison with those observed on January 24, 2007. This condition does not imply significant change in the expected scenarios(see image).

From high to low probability the expected activity scenarios in the next hours, days or weeks are: moderate exhalations, some with ash emissions; occasionally mild incandescence during nights and sporadic low level explosions with low probabilities of incandescent fragment at short distance to the crater.

There is a permanent monitoring of the volcano to detect any change. The traffic light of volcanic alert remains in YELLOW Phase 2.

Recommendations:
1. Access is restricted in a radius of 12 km from the crater. For this reason the permanence in this area is not allowed.
2. The road between Santiago Xalitzintla (Puebla) and San Pedro Nexapa (Mexico State), including Paso de Cortes, is open only to controlled traffic.
3. To the authorities of Civil Protection, maintain preventive procedures, according to operative plans.
4. To the population, to be aware of the official information emited.

Santiaguito Daily Update for 9/13/07

Current Santiaguito status from INSIVUMEH, translated via Google:

SANTIAGUITO VOLCANO (1402-039)

Type of activity: Peleana, Morphology: complex of daciticos domes.

Geographic location: Lat.14.742N and Long.90.570W, Height: 2500 msnm

Atmospheric conditions: Partially dimmed; wind in calm in southwestern direction. Pluvial precipitation: 31,3 mm Activity: Weak explosions expelling ash-gray gray to 300 and 400 meters from height dispersing the column towards the southwest. Depositing fine ash particles on the zone of Palajunoj, it builds Claro Mount and Florida. Few Avalanches in direction of the lava flow of the southwest.

Fuego Daily Update for 9/13/07

Current Fuego status from INSIVUMEH, translated via Google:

Guatemala 12 of September 2007
09:30 local time

FIRE VOLCANO (1402-09)

Type of activity: Vulcaniana, Morphology: layer compound volcano

Geographic location: Lat.14.473N and Long.90.880W, Height: 3763 msnm.

Atmospheric conditions: Dimmed. Wind in calm, direction the west. Pluvial precipitation: 26,0 mm Activity: With sporadic weak and moderate explosions, expelling ash-gray gray, that disperses to the west of the volcanic building; some of these explosions generate avalanches of blocks. On the other hand constants are listened to sounds of airplane originated by the degassing

Pacaya Daily Update for 9/13/07

Current Pacaya status from INSIVUMEH, translated via Google:

Guatemala 12 of September 2007
09:30 local time

VOLCANO PACAYA (1402-11)

Type of activity: Estromboliana, Morphology layer compound volcano

Geographic location, Lat. 14 38,1 N, Long 90 60,1 W height 2570 msnm.

Atmospheric conditions: Cleared, wind to 12 k/h. in direction the west, Pluvial Precipitation: 18,9 mm Activity: The same activity of the last weeks stays, moderate Fumarola of white and blue color to 400 M.s of height. Dispersing, to the west. In the evening and night small pulses of incandescence in the Mackenney crater are observed. The activity by lava flows in the continuous flank the west with changing flows of 100 to 150 meters in length.

Tungurahua Daily Update for 9/13/07

Current Tungurahua status from IG, translated via Google:

REPORT OF the STATE OF VOLCANO TUNGURAHUA N° 256
Thursday, 13 of September of 2007

SUMMARY OF THE ACTIVITY OF THE VOLCANO
The activity of the volcano is classified like moderate. It is possible to emphasize the stromboliana activity of night of yesterday that was moderate.

ANNEXED TECHNICIAN AND OF OBSERVATIONS
Seismicity: A total of 48 events of long period has been entered (LP), 33 signals of tremor
related to emissions and an explosion.
Ash/Emissions/Brightness: At night estromboliana activity was observed, with the emission of
blocks that descended up to 100 ms under the crater.
Climate/Rains/Lahares: In afternoon of partially it was cleared yesterday. In the morning of
today amaneció covered and around noon rains appeared, nevertheless until the closing
of this bulletin there are no reports of lahares.
Noises: From the sector of Runtún slight roars were listened to today

Tungurahua Daily Update for 9/13/07

Current Tungurahua status from IG, translated via Google:

REPORT OF the STATE OF VOLCANO TUNGURAHUA N° 256
Thursday, 13 of September of 2007

SUMMARY OF THE ACTIVITY OF THE VOLCANO
The activity of the volcano is classified like moderate. It is possible to emphasize the stromboliana activity of night of yesterday that was moderate.

ANNEXED TECHNICIAN AND OF OBSERVATIONS
Seismicity: A total of 48 events of long period has been entered (LP), 33 signals of tremor
related to emissions and an explosion.
Ash/Emissions/Brightness: At night estromboliana activity was observed, with the emission of
blocks that descended up to 100 ms under the crater.
Climate/Rains/Lahares: In afternoon of partially it was cleared yesterday. In the morning of
today amaneció covered and around noon rains appeared, nevertheless until the closing
of this bulletin there are no reports of lahares.
Noises: From the sector of Runtún slight roars were listened to today

Breaking News-7.8 Earthquake/Tsunami Watch (Update 8:57)

A 7.8 earthquake has occurred in the Indian Ocean. It near the location of this morning’s earthquake, however, it is unclear at this time if this is an aftershock or a new quake. However, the Pacific Tsunami Warning Center has issued a Tsunami Watch for INDONESIA / AUSTRALIA / THAILAND / MALAYSIA / SINGAPORE.

The bulletin from PTWC:

TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0001Z 13 SEP 2007

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

… A REGIONAL TSUNAMI WATCH IS IN EFFECT …

A TSUNAMI WATCH IS IN EFFECT FOR

INDONESIA / AUSTRALIA / THAILAND / MALAYSIA / SINGAPORE

FOR OTHER AREAS OF THE INDIAN OCEAN REGION…THIS MESSAGE IS FOR
INFORMATION ONLY AT THIS TIME.

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME – 2349Z 12 SEP 2007
COORDINATES – 2.7 SOUTH 100.7 EAST
LOCATION – SOUTHERN SUMATERA INDONESIA
MAGNITUDE – 7.8

EVALUATION

EARTHQUAKES OF THIS SIZE HAVE THE POTENTIAL TO GENERATE A
DESTRUCTIVE LOCAL TSUNAMI AND SOMETIMES A DESTRUCTIVE REGIONAL
TSUNAMI ALONG COASTS LOCATED USUALLY NO MORE THAN A THOUSAND
KILOMETERS FROM THE EARTHQUAKE EPICENTER. AREAS FURTHER FROM THE
EPICENTER COULD EXPERIENCE SMALL SEA LEVEL CHANGES AND STRONG OR
UNUSUAL COASTAL CURRENTS.

HOWEVER – IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS
WATCH IS BASED ONLY ON THE EARTHQUAKE EVALUATION. AUTHORITIES IN
THE REGION SHOULD TAKE APPROPRIATE ACTION IN RESPONSE TO THIS
POSSIBILITY. THE WATCH WILL NOT EXPAND TO OTHER AREAS OF THE
INDIAN OCEAN UNLESS ADDITIONAL DATA ARE RECEIVED TO WARRANT SUCH
AN EXPANSION.

DUE TO ONLY LIMITED SEA LEVEL DATA FROM THE REGION IT MAY NOT
BE POSSIBLE FOR THIS CENTER TO RAPIDLY CONFIRM NOR EVALUATE THE
STRENGTH OF A TSUNAMI IF ONE HAS BEEN GENERATED.

ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS
WITHIN THE WARNING AND WATCH AREAS ARE GIVEN BELOW. ACTUAL
ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE
LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN
SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.

LOCATION FORECAST POINT COORDINATES ARRIVAL TIME
——————————– ———— ————
INDONESIA PADANG 0.9S 100.1E 0021Z 13 SEP
BENGKULU 3.9S 102.0E 0026Z 13 SEP
SIBERUT 1.5S 98.7E 0036Z 13 SEP
SIMEULUE 2.5N 96.0E 0116Z 13 SEP
BANDAR LAMPUNG 5.7S 105.3E 0148Z 13 SEP
BANDA ACEH 5.5N 95.1E 0202Z 13 SEP
CILACAP 7.8S 108.9E 0207Z 13 SEP
BELAWAN 3.8N 99.0E 0536Z 13 SEP
AUSTRALIA CHRISTMAS IS 10.4S 105.4E 0120Z 13 SEP
COCOS ISLAND 12.1S 96.7E 0127Z 13 SEP
THAILAND KO TARUTAO 6.6N 99.6E 0459Z 13 SEP
MALAYSIA GEORGETOWN 5.4N 100.1E 0538Z 13 SEP
PORT DICKSON 2.5N 101.7E 0921Z 13 SEP
SINGAPORE SINGAPORE 1.2N 103.8E 1321Z 13 SEP

THIS WILL BE THE ONLY BULLETIN ISSUED BY THE PACIFIC TSUNAMI
WARNING CENTER FOR THIS EVENT UNLESS ADDITIONAL INFORMATION
BECOMES AVAILABLE.

THE JAPAN METEOROLOGICAL AGENCY MAY ISSUE ADDITIONAL INFORMATION
FOR THIS EVENT. IN THE CASE OF CONFLICTING INFORMATION…THE
MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.

The USGS report is here. According to that report the quake was at depth of 6 miles, around 3 miles higher in the earths crust than this mornings quake.

Updates below the fold.

Pavlof Daily Update for 9/12/07

Current Pavlof status from AVO:

Wednesday, September 12, 2007 12:10 PM AKDT (2010 UTC)

PAVLOF VOLCANO (CAVW#1102-03-)
55°24′57″ N161°53′24″ W, Summit Elevation 8261 ft (2518 m)
Current Aviation Color Code: ORANGE
Current Volcano Alert Level: Watch

The eruption of Pavlof continues. Seismic activity continues to fluctuate over levels consistent with those observed during the past week. Satellite views continue to show persistent thermal anomalies at the volcano. The web camera in Cold Bay was obscured by clouds today.

If activity should increase in intensity, larger ash clouds that could affect higher-flying aircraft may be produced. The most immediate ground hazard in the vicinity of the volcano includes light ash fall on nearby communities. Previous historical eruptions from Pavlof caused only a few millimeters (about 1/10th of an inch) of ash to fall on King Cove, Nelson Lagoon, Cold Bay, and Sand Point. Mudflows in drainages from the flanks of the volcano, and lava flows and avalanching of hot debris on the upper reaches of the volcano are also of concern in the uninhabited areas around the volcano. Satellite and seismic data and eyewitness observations suggest most of the surface lava activity is occurring on the southeast sector of the steep-sided volcano; this suggests that the Pacific Ocean side of the volcano is at most risk from avalanching hot debris.

At this time, we expect this eruption to follow the pattern of previous eruptions. The last eruption of Pavlof began in September 1996 and consisted of a several-month-long series of ash explosions, lava-fountaining, and lava-flow production. Ash clouds reached as high as 30,000 ft asl on one occasion. However, most ash clouds were below 20,000 ft asl. Prior to 1996, Pavlof erupted in 1986 sending ash as high as 49,000 ft asl on at least one occasion. A hazard assessment for Pavlof and the Emmons Lake volcanic center is available on the web at http://www.avo.alaska.edu/pdfs/SIR2006-5248.pdf

Kilauea Daily Update for 9/12/07

Current Kilauea status from HVO:

Kilauea Daily Update issued Sep 12, 2007 09:20 HST Volcanic-Alert Level WATCH – Aviation Color Code ORANGE
Report prepared by the Hawaiian Volcano Observatory (HVO):

Activity Summary: The 7/21 eruption continued to supply an open channel; the channel overflowed at several points within 1 km (0.6 mile) of the vent, producing several small flows, all less than 1 km (0.6 miles) in length. The `a`a flow along the southern margin has become somewhat more active since the last report, but showing only minor advancement near Kupaianaha.

Hazard Summary: There are no immediate threats directly from lava flows. A publication detailing the current and potential future hazards posed by this eruption is available at http://pubs.usgs.gov/of/2007/1264/.

Vent areas are hazardous and conditions can change rapidly. Access to the 7/21 eruption site in the Kahauale`a Natural Area Reserve is closed (see http://www.state.hi.us/dlnr/chair/pio/HtmlNR/07-N076.htm). Lava flows advancing through vegetation are hazardous and can produce fire and methane explosions that propel chunks of lava and rock several feet into the air.

Last 24 hours at 7/21 eruption site: The vent continued to supply a full and active lava channel about 1 km (0.6 miles) long. Channel overflows produced scattered small flows to the north, all less than a few hundred meters (several hundred feet) in length. Yesterday, a field crew reported that the backup at the Fissure D1 vent, reported that morning effectively buried the D2 source before the obstruction that caused backup cleared. The heightened near-vent activity has effectively stalled advancement of the most easterly (distal) end of the flowfield and is currently producing minor lobe advancements only to the east and south, near Kupaianaha. The recent flow activity continues to contribute to the thickness and breadth of the flow field, but not its length.

Last 24 hours at Pu`u `O`o crater: The webcam continues to show lots of fume by day but no incandescence overnight. The tiltmeter on the north flank of Pu`u `O`o shows slow steady deflation, losing 0.3 microradians since yesterday’s update. Seismic tremor levels remain low.

Last 24 hours at Kilauea summit: Kilauea’s summit tilt is continuing a trend of slow deflation. Summit seismicity remains low. One small earthquake was recorded on the volcano’s south flank.