FVXX21 KWBC 130900
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0900 UTC 13 APR 2000 BY THE WASHINGTON VAAC 
.
TUNGURAHUA 00-436        ECUADOR 0128S 7826W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY... AVIATION MODEL WINDS ALOFT FORECAST 
.
ERUPTION DETAILS: NEARLY CONTINUOUS GAS EMISSIONS WITH
OCCASIONAL ASH EMISSIONS.
.
DETAILS OF ASH:  SATELLITE IMAGERY THROUGH 0815 UTC SHOWS LOW
AND MID LEVEL CLOUDS IN THE VICINITY OF THE VOLCANO MAKING IT
DIFFICULT TO DETECT ANY ASH. THE VOLCANO REMAINS UNSTABLE. THE
GEOPHYSICAL INSTITUTE REPORTS OCCASIONAL ACTIVITY TO FL250. 
.
TRAJECTORY: ASH BETWEEN THE SUMMIT AND FL250 WOULD MOVE TOWARD
THE SOUTHWEST AT 10 TO 15 KTS. 

OUTLOOK: SEE SIGMETS.
.
THE NEXT STATEMENT WILL BE ISSUED BY 13/1500 UTC.
.
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
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
KARST
.
NNNN