FVXX21 KNES 210633
VOLCANIC ASH ADVISORY
ISSUED: 2006MAY21/0630Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 3002 FT (915 M)

ADVISORY NUMBER: 2006/372

INFORMATION SOURCE: GOES-12. GFS WINDS. NAM WINDS.
MONTSERRAT OBSERVATORY. VAFTAD. 

ERUPTION DETAILS: DOME COLLAPSE PRODUCING HIGH
LEVEL ASH AT ABOUT 20/11Z AND ONGOING LOW LEVEL
EMISSIONS

OBS ASH DATE/TIME: 21/0515Z

OBS ASH CLOUD: SFC/FL080 10NM WIDE LINE BETWEEN
N1641 W06210 - N1607 W06314. ASH IS MOVING SW 10
KNOTS. SFC/FL380 N1607 W06714 - N1453 W06553 -
N1248 W06558 - N1304 W06753 - N1511 W06846 - N1607
W06714 MOVING SW 20-25 KNOTS. 

FCST ASH CLOUD +6H: 21/1130Z SFC/FL080 10NM WIDE
LINE BETWEEN N1641 W06211 - N1605 W06323.
SFC/FL370 N1509 W06824 - N1225 W06641 - N1222
W06908 - N1411 W07016 - N1509 W06824 

FCST ASH CLOUD +12H: 21/1730Z SFC/FL080 10NM WIDE
LINE BETWEEN N1721 W06318 - N1641 W06210.
SFC/FL370 N1402 W06950 - N1209 W06802 - N1119
W07042 - N1310 W07146 - N1402 W06950 

FCST ASH CLOUD +18H: 21/2330Z SFC/FL080 10NM WIDE
LINE BETWEEN N1726 W06313 - N1641 W06210.
SFC/FL370 N1258 W07032 - N1154 W07002 - N1013
W07329 - N1202 W07408 - N1258 W07032 

REMARKS: AN AREA OF ASH NOW BELIEVED TO BE BELOW
ABOUT FL380 IS MOVING TOWARD THE WEST SOUTHWEST
AND IS EXPECTED TO REACH THE NORTHERN COAST OF
SOUTH AMERICA IN 10-15 HOURS.  MEANWHILE AN ASH
PLUME BELOW FL080 CONTINUES TO BE ATTACHED TO THE
VOLCANO. ...

NEXT ADVISORY: WILL BE ISSUED BY 2006MAY21/1230Z

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