FVXX21 KWBC 191300
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1300  UTC 19 APR 2000 BY THE WASHINGTON VAAC 
.
TUNGURAHUA 00-461        ECUADOR 0128S 7826W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND
MULTISPECTRAL IMAGERY.  WIND FORECAST FROM THE AVIATION MODEL.
REPORT FROM THE GEOPHYSICAL INSTITUTE.
.
ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS.
.
DETAILS OF ASH: SINCE 18/1826 UTC SATELLITE DATA HAS BEEN
LIMITED TO ONE IMAGE EVERY THREE HOURS IN ORDER TO SUPPORT US
NATIONAL WEATHER SERVICE OPERATIONS.  NORMAL IMAGING RESUMED
AT 19/1126 UTC.
.
NO ASH COULD BE DISCERNED IN THE MOST RECENT SATELLITE IMAGE
AT 19/1215 UTC DUE TO EXTENSIVE LOW AND MID LEVEL CLOUDINESS
IN THE REGION. THE LAST REPORTED ASH WAS AT SUMMIT LEVEL WHICH
IS FL160.
.
TRAJECTORY: ANY ASH THAT MAY EXIST TO FL160 WOULD MOVE TOWARDS
THE WEST AT 15 TO 20 KNOTS.
.
THE NEXT STATEMENT WILL BE ISSUED BY 19/1900 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