FVXX20 KWBC 071700 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1700 UTC 07 AUGUST 1999 BY THE WASHINGTON VAAC . CERRO NEGRO 99-005 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: HIGH RESOLUTION VISIBLE SATELLITE IMAGERY UNDER GENERALLY CLEAR SKIES INDICATED NO ASH THROUGH 1615 UTC AND A HOT SPOT IS NO LONGER SEEN IN NEAR INFRARED SATELLITE IMAGERY. HOWEVER 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 07/2300 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN