FVXX20 KWBC 101500
.
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1500 UTC 10 MAY 1999 BY THE WASHINGTON VAAC
.
SOUFRIERE HILLS 99-128   WEST INDIES 16.72N 62.18W
.
BACKGROUND:    SOUFRIERE HILLS MONTSERRAT (1600-05)
               SUMMIT HEIGHT 3000 FT (915 M)
.
SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY...GOES-8
IMAGERY THROUGH 1445 UTC AND PRINSES JULIANA UPPER AIR SOUNDING.
.
ERUPTION DETAILS: MONTSERRAT VOLCANO OBSERVATORY REPORTS AN EVENT
OCCURRING AROUND 1430 UTC WITH ASH OVER 10,000 FEET.
.
DETAILS OF ASH CLOUD: A VERY IMPRESSIVE ASH CLOUD CAN BE SEEN ON THE
1445 UTC IMAGE.  THE ASH CLOUD IS BOUNDED BY THE FOLLOWING POINTS:
16:46N/62:13W  16:46N/61:57W  16:41N/61:58W  16:39N/62:07W  AND
16:42N/62:13W.  THE PLUME IS CURRENTLY 17 NM IN LENGTH AND 8 NM
WIDE.  SATELLITE ANALYSIS SUGGEST THAT THE ASH PLUME IS AT CIRRUS
LEVEL OR AROUND 30,000 FEET AND MOVING TO THE EAST AT 40-45 KTS.
. 
TRAJECTORY: UPPER AIR WIND DATA SUGGEST ANY ASH AT 30,000 FEET
SHOULD MOVE TO THE EAST-NORTHEAST AT 45 KNOTS.
.
THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS OFTEN ACCOMPANIED BY
A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS
www.ssd.noaa.gov/VAAC/messages.html
(all lower case except /VAAC/)
.
OUTLOOK: SEE SIGMETS AND VAFTAD.
.
.NEXT MESSAGE WILL BE AT 10/2100 UTC.
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
NNNN

"Attached Graphic Map Depicting Ash" 

""