FVXX21 KWBC 121420
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1420 UTC 12 FEB 2000 BY THE WASHINGTON VAAC 
.
TUNGURAHUA 00-181         ECUADOR 0128S 7826W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 VISIBLE... MULTISPECTRAL AND INFRARED
IMAGERY.  GEOPHYSICAL INSTITUTE IN QUITO. 6 HOUR WIND FORECAST FROM
THE 12/0600 UTC AVIATION MODEL. 
.
ERUPTION DETAILS: CONTINUOUS ERUPTION OF ASH AND STEAM
.
DETAILS OF ASH: MULTISPECTRAL AND VISIBLE IMAGERY SHOWED A
SIGNIFICANT INCREASE IN THE AREAL EXTENT OF ASH BY 1315 UTC BROUGHT
ON BY A LARGE SCALE SHIFT IN WIND DIRECTION. ASH WHICH HAD BEEN
MOVING TOWARD THE SOUTHWEST FROM THE SUMMIT IS NOW MOVING TOWARD THE
NORTHWEST FROM THE SUMMIT.
   THICK ASH UP TO 12 KM (6 NMI) WIDE EXTENDED FROM 0124S7840W TO
0148S7935W.  THIN ASH EXTENDED FROM THE SUMMIT TO 0152S7918W AND WAS
UP TO 27 KM (15 NMI) WIDE.  AN AREA OF POSSIBLE ASH UP TO 26 KM (14
NMI) WIDE EXTENDED FROM 0115S7836W TO 0120S7918W.
   A PILOT REPORTED ASH TO FL250 AT 1237 UTC.  THE GEOPHYSICAL
INSTITUTE RECENTLY REPORTED PILOT REPORTS INDICATED ASH TO FL330.
.
TRAJECTORY: TOWARD THE NORTHWEST AT 15 TO 20 KNOTS.
.
OUTLOOK:  SEE SIGMETS AND VAFTAD.
.
THE NEXT STATEMENT WILL BE ISSUED AT 12/2030 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.
.
TURK 
.
NNNN
"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"