FVXX21 KWBC 190900
.
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0900 UTC 19 DEC 1999 BY THE WASHINGTON VAAC 
.
TUNGURAHUA 99-266        ECUADOR 1.47S 78.44W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY...19/0600 UTC AVIATION MODEL WIND FORECAST...
.
ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM...
.
DETAILS OF ASH: THE GOES-8 IMAGERY THRU 19/0815 UTC DOES NOT
INDICATE ANY ASH OVER OR ADJACENT TO THE TUNGURAHUA VOLCANO. HOWEVER
CAUTION IS STRONGLY SUGGESTED AS THEIR HAVE BEEN EMISSIONS OF ASH
AND STEAM OCCURRING REPEATEDLY OVER THE LAST WEEK WITH LITTLE OR NO
WARNING. THERE WERE SOME OF THESE EMISSIONS EARLIER TODAY WITH A
HEIGHT OF FL180 ESTIMATED.
 .
TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ASH AT FL180 WOULD MOVE
TO THE WEST-SOUTHWEST AT ABOUT 15 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  
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
.
OUTLOOK:  SEE SIGMETS.
.
EFFECTIVE JANUARY 3 2000 AT 0000 UTC... ALL REFERENCES TO LATITUDE
AND LONGITUDE IN VOLCANIC ASH ADVISORY STATEMENTS WILL BE IN DEGREES
AND MINUTES OF A DEGREE.  EXAMPLE: 16.70N 62.20W  WILL BE 1642N6212W
.
THE NEXT STATEMENT WILL BE ISSUED BY 19/1500 UTC.
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
ORRISON
.
NNNN