FVXX20 KWBC 071330
.
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1330 UTC 07 OCTOBER 1999 BY THE WASHINGTON VAAC 
.
GUAGUA PICHINCHA 99-034 ECUADOR 0.17S 78.60W 
.
BACKGROUND:    GUAGUA PICHINCHA (1502-02)
               SUMMIT HEIGHT    15,695 FT (4784 M)  
.
SOURCES OF INFORMATION: GOES8 VISIBLE INFRARED AND MULTISPECTRAL
IMAGERY THROUGH 1315 UTC..0000 UTC NUMERICAL WEATHER MODEL AND
TRAJECTORY FORECASTS. UNITED STATES GEOLOGICAL SURVEY AT GEOPHYSICAL
INSITUTE IN QUITO. 
.
ERUPTION DETAILS: 07/1207 UTC 

DETAILS OF ASH CLOUD: THE USGS AT THE GEOPHYSICAL INSITUTE REPORTED
AN EXPLOSITVE ERUPTION OF GUAGUA AT 07/1207 UTC. THE GOES 8 VISIBLE
IMAGE AT 07/1315 UTC SHOWS AN IMPRESSIVE ASH CLOUD OVER THE VOLCANO.
ASH ESTIMATED AT FL500 OR POSSIBLY HIGHER TO FL650 IS MOVING TOWARD
THE EAST WHILE ASH AT A LOWER LEVEL UP TO FL400 IS MOVING TOWARDS
THE SOUTHWEST. THE LEADING EDGE OF THE ASH TO THE EAST IS AT EQ.
78.03 W AND THE LEADING EDGE OF THE ASH MOVING TO THE SOUTHWEST IS
AT -0.32S 78.90W. THE WIDTH OF THE TOTAL ASH CLOUD IS 39 KM (21
NMI). THE LENGTH OF THE ASH CLOUD IS 100 KM (54 NMI).
.
TRAJECTORY: ASH TO FL400 WOULD MOVE TOWARDS THE SOUTHWEST AT 15 TO
20 KTS WHILE ASH FROM FL400 TO FL650 WOULD MOVE TOWARD THE EAST AT
15 TO 20 KTS. 
.
OJK/ALS/BH
.
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 SIGMETS AND VAFTAD.
.
THE NEST MESSAGE WILL BE ISSUED AT 07/1930 UTC.
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
NNNN"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"