Violenta eruzione del SoufriÃ¨re Hills

**Blizzard** · 22/05/2006, 16:56

Violenta eruzione del vulcano situato sull'isola di Montserrat, mar dei caraibi.....la nube di ceneri e polveri alta 55.000 piedi (circa 17 km) Ã¨ ben visibile dal satellite....

Se qualcuno ha maggiori informazioni le leggerÃ² volentieri...

SoufriÃ¨re Hills volcano (Montserrat), eruption news: large explosion on 21 May 2006
At about 11 am local time of May 20, 2006, a large dome collapse accompanied by a large explosion occurred at SoufriÃ¨re Hills volcano, producing an ash column of more than 50,000 ft height (about 17 km). The plume is drifting SW and caused planes to divert their route. Pyroclastic flows down the tar river valley reaching the sea. Flows have also broken out of the former crater to the east and have been seen down to Spanish point and Truants. Ash has been falling in Salem, Olde Town and Olveston.
Prior to the eruption, there was a broad spine in the southern summit area of the dome. Rockfalls and small pyroclastic flows have occurred across a sector from the west to the southeast of the lava dome and occasional rockfalls have been seen on the north side of the dome, during the period until 19 May.

FVXX21 KNES 221147
VOLCANIC ASH ADVISORY
ISSUED: 2006MAY22/1147Z VAAC: WASHINGTON

VOLCANO: SOUFRIERE HILLS 1600-05
LOCATION: N1642 W06210 AREA: W_INDIES

SUMMIT ELEVATION: 3002 FT (915 M)

ADVISORY NUMBER: 2006/378

INFORMATION SOURCE: GOES-12. GFS WINDS.

ERUPTION DETAILS: CONTINUOUS LOW LEVEL EMISSION OF
ASH AND GASES.

OBS ASH DATE/TIME: 22/1045Z

OBS ASH CLOUD: SFC/FL100 N2005 W06231 - N1951
W06201 - N1742 W06252 - N1703 W06229 - N1647
W06211 - N1636 W06212 - N1734 W06404 - N1805
W06356 - N2005 W06231 MOVING NW 5-10 KNOTS.

FCST ASH CLOUD +6H: 22/1700Z SFC/FL100 N2015
W06352 - N2008 W06325 - N1823 W06414 - N1748
W06301 - N1649 W06213 - N1635 W06212 - N1748
W06445 - N1833 W06451 - N2015 W06352

FCST ASH CLOUD +12H: 22/2300Z SFC/FL100 N2026
W06446 - N1850 W06500 - N1836 W06444 - N1747
W06316 - N1650 W06211 - N1637 W06211 - N1806
W06538 - N1847 W06540 - N2006 W06508 - N2026
W06446

FCST ASH CLOUD +18H: 23/0500Z SFC/FL100 N1826
W06438 - N1805 W06349 - N1650 W06211 - N1636
W06214 - N1746 W06451 - N1826 W06438

REMARKS: ASH IS LOCATED OVER THE ISLANDS OF
ANGUILLA, ST MARTIN, ST KITTS AND TO ABOUT 64W.
THE ASH IS HEADING WEST NORTHWEST AND STRETCHES
BACK TO THE VOLCANO. ASH IS ESTIMATED TO FL100.
ASH IS EXPECTED TO MOVE WEST NORTHWEST OVER THE
NEXT 6-12 HOURS WITH THE NORTHERN EDGE OF ASH
DISSIPATING BY 18 HOURS ALTHOUGH CONFIDENCE BY 18
HOURS IS LOW. ...KIBLER

Nel frattempo l'eruzione del Merapi Ã¨ temporaneamente terminata anche se il CVGHM mantiene alta l'allerta per una possibile attivitÃ* + violenta a breve.....

IDD41290
VOLCANIC ASH ADVISORY
ISSUED: 20060522/0425Z
VAAC: DARWIN

VOLCANO: Merapi 0603-25=
LOCATION: S0732 E11026
AREA: Java
SUMMIT ELEVATION: 2947M/9668FT

ADVISORY NUMBER: 2006/40
INFORMATION SOURCE: CVGHM
AVIATION COLOUR CODE: RED
ERUPTION DETAILS: CVGHM ADVISE MAJOR ERUPTION POSSIBLE.

OBS ASH DATE/TIME: 22/0400Z
OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA WINDS
SFC/F120 100/10KT F120/FL200 050/15KT FL200/FL500 320/20KT

FCST ASH CLD +6HR: NO ASH EXP
FCST ASH CLD +12HR: NO ASH EXP
FCST ASH CLD +18HR: NO ASH EXP

NEXT ADVISORY: NO LATER THAN 20060523/0400Z
REMARKS: NO ASH PLUME IDENTIFIABLE ON SATELLITE IMAGES.
PRECAUSIONARY ADVISORIES WILL CONTINUE TO BE ISSUED 24 HOURLY

**Blizzard** · 22/05/2006, 21:19

Altre immagini:

Click here to view high-resolution version (787.21KB)
Image Acquired: May 20, 2006

According to news reports, the Soufriere Hills Volcano, on the Caribbean island of Montserrat, erupted on May 20, 2006. The dome collapsed, sending a debris flow down the volcano’s flanks, and a cloud of volcanic ash 16 kilometers (10 miles) into the sky. The Associated Press reported that airline flights were suspended as a result of the ash clouds.
The Moderate Resolution Imaging Spectroradiometer (MODIS) flying onboard the Terra satellite took this picture of a volcanic ash plume emanating from the Soufriere Hills Volcano on May 20, 2006. The volcano is in near the upper right corner of the image. In this picture, the volcanic ash plume blends into the clouds over the volcano, but the ash plume is partly beige, especially near its source at the volcano’s summit.

**Blizzard** · 23/05/2006, 20:58

Un'altra bella immagine satellitare e situazione corrente:

FVXX21 KNES 231738
VOLCANIC ASH ADVISORY
ISSUED: 2006MAY23/1738Z VAAC: WASHINGTON

VOLCANO: SOUFRIERE HILLS 1600-05
LOCATION: N1642 W06210 AREA: W_INDIES

SUMMIT ELEVATION: 3002 FT (915 M)

ADVISORY NUMBER: 2006/383

INFORMATION SOURCE: GOES-12. RADIOSONDE. PILOT
REPORT.

ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS.

OBS ASH DATE/TIME: 23/1715Z

OBS ASH CLOUD: SFC/FL070 6NM WIDE LINE BETWEEN
N1710 W06332 - N1644 W06213. ASH IS MOVING W 15
KNOTS.

FCST ASH CLOUD +6H: 23/2330Z SFC/FL070 6NM WIDE
LINE BETWEEN N1656 W06335 - N1644 W06213.

FCST ASH CLOUD +12H: 24/0530Z SFC/FL070 6NM WIDE
LINE BETWEEN N1703 W06336 - N1645 W06214.

FCST ASH CLOUD +18H: 24/1130Z SFC/FL070 6NM WIDE
LINE BETWEEN N1658 W06334 - N1644 W06214.

REMARKS: MID-DAY VISIBLE IMAGERY SHOWS A FAINT 5-6
NM WIDE ASH PLUME EXTENDING TO THE WESTNORTHWEST
ABOUT 85 NM BEFORE BECOMING TOO DIFFUSE TO BE
SEEN. HOWEVER, EARLIER PILOT REPORTS HAVE
REPORTED ASH/DUST AS FAR WEST AS EASTERN PUERTO
RICO. THESE OBSERVATIONS ARE ALONG THE SAME AXIS
AS THE ASH PLUME. WINDS ARE FORECASTED TO VEER
SLIGHTLY MORE TO THE WEST. NO HOTSPOT IS SEEN AT
THE SUMMIT. ...BALDWIN

NEXT ADVISORY: WILL BE ISSUED BY 2006MAY23/2345Z

Aggiungo x curiositÃ* l'andamento dell'attivitÃ* vulcanica mondiale negli ultimi anni.Aggiornato al 16/04/2006:

**aleceppi** · 25/05/2006, 17:44

Interessante. Belle immagini!

**Fabio Volcano** · 25/05/2006, 18:00

17 km, potrebbe essere una subpliniana... ChissÃ* se ha generato flussi piroclastici... (non mi va di tradurre l'inglese

)

**Blizzard** · 25/05/2006, 18:51

Originariamente Scritto da Euskadi1982

17 km, potrebbe essere una subpliniana... ChissÃ* se ha generato flussi piroclastici... (non mi va di tradurre l'inglese

)

Si....almeno sicuramente il 20 Maggio, il giorno dell'eruzione + significativa.Cmq nulla di rilevante ai fini "climatici".Il SoufriÃ¨re Hills ha infatti eruttato una gran quantitÃ* di ceneri sottili e cloruro di idrogeno...elementi che non respingono le radiazioni solari a differenza di ceneri di maggior spessore e, soprattutto, degli aereosol causati dall'anidride solforosa.

A questo link alcune belle immagini che ritraggono l'eruzione del Merapi:

http://www.volcanodiscovery.com/volc...ties_2006.html

Merapi: