FVXX20 KWBC 061715 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1700 UTC 06 AUGUST 1999 BY THE WASHINGTON VAAC . CERRO NEGRO 99-001 NICARAGUA 12.5N 86.7W . BACKGROUND: CERRO NEGRO NICARAGUA (1404-07) SUMMIT HEIGHT 2214 FT (675M) . SOURCES OF INFORMATION: NEWS MEDIA REPORTS AND GOES-8 SATELLITE IMAGERY AND INETER IN MANAGUA NICARAGUA. . ERUPTION DETAILS: ERUPTIONS HAVE BEEN OCCURRING SINCE 05/1600 UTC. . DETAILS OF ASH CLOUD: ASH IS NOT VISIBLE IN THE CURRENT SATELLITE IMAGERY. HOWEVER A WELL DEFINED HOT SPOT IS VISIBLE ON THE MULTI-SPECTRAL IMAGERY. INFORMATION FROM INETER SUGGESTS THAT THIS IS PRIMARILY A LAVA EVENT. HOWEVER MEDIA REPORTS INDICATE THAT YESTERDAY PILOTS NOTED THE PRESENCE OF ASH AT FL220. . TRAJECTORY: ANY ASH AT FL220 WOULD MOVE TOWARD THE NORTHWEST AT 15-20 KTS. . 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 06/2300 UTC. . PLEASE REFER TO SIGMETS AND VAFTAD FOR CURRENT WARNINGS. . NNNN