FVXX20 KWBC 302015 VOLCANIC ASH ADVISORY ISSUED 2015 UTC 30 JUN 2000 BY THE WASHINGTON VAAC . SOUFRIERE HILLS 00-105 WEST INDIES 1643N 6211W . BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05) SUMMIT HEIGHT 3000 FT (915M) . SOURCES OF INFORMATION: PILOT REPORT. MONTSERRAT VOLCANO OBSERVATORY. AVIATION MODEL WINDS. . ERUPTION DETAILS: INCREASED SEISMIC ACTIVITY... PYROCLASTIC FLOWS AND ROCKFALLS... . DETAILS OF ASH CLOUD: A PILOT REPORT AT 30/1952 UTC INDICATED ASH NEAR THE VOLCANO. THE REPORT INDICATED THAT ASH EXTENDED FROM BLACKBURNE AND WAS BETWEEN FL090 AND FL100. THE MONTSERRAT VOLCANO OBSERVATORY CONFIRMED THAT SEISMIC ACTIVITY HAS BEEN HIGH TODAY AND AT ABOUT THE SAME TIME AS THE PILOT REPORT THEY OBSERVED A SUBSTANTIAL ROCKFALL. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH AT ABOUT FL100 WILL MOVE TO THE WEST AT 20 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS. . MORE INFORMATION WILL BE PROVIDED WHEN SATELLITE IMAGERY IS RECEIVED SHOWING THE EVENT THAT OCCURRED AT 1952 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER 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