FVXX22 KWBC 2172030
VOLCANIC ASH ADVISORY STATEMENT-CORRECTION
ISSUED 2030 UTC 21 NOV 1999 BY THE WASHINGTON VAAC 
.
SAN CRISTOBAL  99-001   NICARAGUA  12.7N 87.0W 
.
BACKGROUND:      SAN CRISTOBAL  NICARAGUA  (1404-02)
                 SUMMIT HEIGHT 5725 FT  (1745 M)

SOURCES OF INFORMATION:  GOES-8 VISIBLE IMAGERY. CHINANDEGA
NICARAGUA SURFACE OBSERVATION.

ERUPTION DETAILS:   CHINANDEGA NICARAGUA SURFACE OBSERVATION AT 1900
UTC INDICATED THE PRESENCE OF VOLCANIC ASH OVER THE STATION.

DETAILS OF ASH CLOUD:  SATELLITE IMAGERY THROUGH 1945 UTC SHOWS A
DISTINCT BUT THIN ASH PLUME EMANATING FROM THE SUMMIT OF THE
VOLCANO.  THIS PLUME EXTENDS FROM THE SUMMIT TO 12.2N 88.2W WHICH IS
APPROXIMATELY 140 KM (75 NMI) TO THE WEST SOUTHWEST AND IS
APPROXIMATELY 30 KM (16 NMI) WIDE AT THE WIDEST POINT.
. 
TRAJECTORY: UPPER AIR DATA SUGGESTS ASH AT OR BELOW FL100 MOVING
TOWARD THE SOUTHWEST AT ABOUT 5 TO 10 KNOTS.
.
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 STATEMENT WILL BE ISSUED BY 22/0230 UTC.

PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
NNNN
"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"