FVXX20 KWBC 180130 VOLCANIC ASH ADVISORY ISSUED 0130 UTC 18 SEP 2000 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 00-245 WEST INDIES 1643N 6211W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915M) . SOURCES OF INFORMATION: THE MONTSERRAT VOLCANO OBSERVATORY. GOES-8 IMAGERY. 17/1200 UTC SOUNDING FROM GUADELOUPE. . ERUPTION DETAILS: MODERATE EXPLOSION AROUND 17/0340 UTC. . DETAILS OF ASH CLOUD: NO ASH IS VISIBLE IN THE LATEST GOES-8 SATELLITE IMAGERY THROUGH 0045 UTC DUE TO CLOUDINESS ASSOCIATED WITH TD 12. THE MVO REPORTS THAT THERE HAS BEEN AT LEAST ONE EXPLOSION PER DAY AND THESE TYPICALLY OCCUR AT NIGHT. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH FROM SUMMIT LEVEL TO FL100 WOULD MOVE WEST AT 20 TO 30 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 18/0730 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. . BROWN . NNNN