FVXX20 KWBC 080500 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0500 UTC 08 AUGUST 1999 BY THE WASHINGTON VAAC . CERRO NEGRO 99-007 NICARAGUA 12.5N 86.7W . BACKGROUND: CERRO NEGRO NICARAGUA (1404-07) SUMMIT HEIGHT 2214 FT (675M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL SATELLITE IMAGERY...MEDIA REPORTS ..NICARAGUAN INSTITUTE OF TERRITORIAL STUDIES IN MANAGUA NICARAGUA. . ERUPTION DETAILS: INITIAL ERUPTION AT 05/1600 UTC. . DETAILS OF ASH CLOUD: LATEST SATELLITE IMAGERY THROUGH 0415 UTC SHOWS THUNDERSTORM CLOUDS OVER THE REGION OF THE VOLCANO WHICH MAKES THE DETECTION OF ASH OR HOT SPOTS ALMOST IMPOSSIBLE. NICARAGUAN NEWSPAPERS REPORT LAVA FOUNTAINS AND STRONG SEISMIC ACTIVITY AND SOME NEAR SUMMIT ASH EMISSIONS. . 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 08/1100 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN