FVXX22 KWBC 210130
VOLCANIC ASH ADVISORY
ISSUED 0130 UTC 21 AUG 2000 BY THE WASHINGTON VAAC
.
SOUFRIERE HILLS 00-158          WEST INDIES 1643N 6211W  
.
BACKGROUND:    SOUFRIERE HILLS  MONTSERRAT (1600-05)
               SUMMIT HEIGHT  3000 FT (915M)
.
SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY. 0000 UTC GUADELOUPE UPPER AIR SOUNDING.
.
ERUPTION DETAILS: ROCKFALLS AND SMALL PYROCLASTIC FLOWS.
.
DETAILS OF ASH CLOUD: NO CURRENT ASH PLUME IS VISIBLE IN
MULTISPECTRAL OR INFRARED IMAGERY THROUGH 21/0102 UTC. A FAINT
ASH PLUME ESTIMATED BELOW FL080 WAS VISIBLE IN THE LAST FEW
VISIBLE IMAGES OF THE DAY (THROUGH 20/2145 UTC). THIS TYPE OF
PLUME IS VERY DIFFICULT TO DETECT IN MULTISPECTRAL OR INFRARED
IMAGERY.
.
TRAJECTORY: ASH UP TO FL080 IS MOVING TOWARDS THE WEST AT 15
TO 20 KNOTS.
.
OUTLOOK:  SEE SIGMETS.
.
THE NEXT MESSAGE WILL BE ISSUED BY 21/0730 UTC.
.
REAL TIME SATELLITE IMAGERY AND VOLCANIC ASH ADVISORIES OFTEN
ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT
INTERNET URL ADDRESS  
HTTP://WWW.SSD.NOAA.GOV/VAAC/WASHINGTON.HTML
(ALL LOWER CASE EXCEPT /VAAC/)
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
NNNN