FVXX20 KWBC 072300 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2300 UTC 07 AUGUST 1999 BY THE WASHINGTON VAAC . CERRO NEGRO 99-006 NICARAGUA 12.5N 86.7W . BACKGROUND: CERRO NEGRO NICARAGUA (1404-07) SUMMIT HEIGHT 2214 FT (675M) . SOURCES OF INFORMATION: NEWS MEDIA REPORTS...GOES-8 SATELLITE IMAGERY...NICARAGUAN INSTITUTE OF TERRITORIAL STUDIES IN MANAGUA NICARAGUA...12 UTC AVIATION MODEL DATA . ERUPTION DETAILS: INITIAL ERUPTION AT 05/1600 UTC. . DETAILS OF ASH CLOUD: LATEST SATELLITE IMAGERY THROUGH 2215 UTC SHOWS NO INDICATION OF ASH FROM THE VOLCANO. IN ADDITION A HOT SPOT IS NOT DISCERNIBLE IN MULTISPECTRAL IMAGERY. THE NICARAGUAN INSTITUTE OF TERRITORIAL STUDIES REPORTED THAT 200 VOLCANIC EARTHQUAKES HAD OCCURRED OVER THE LAST THREE DAYS SUGGESTING THAT THE VOLCANO REMAINS RESTLESS. . TRAJECTORY: N/A. . REAL TIME SATELLITE IMAGERY ALONG WITH 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/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE LATEST SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED AROUND 08/0500 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN