FVXX21 KWBC 120350
.
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0350 UTC 12 MAR 1999 BY THE WASHINGTON VAAC
.
POPOCATEPETL 99-020   MEXICO 19.02N 98.62W 
.
BACKGROUND:    POPOCATEPETL MEXICO (1401-09)
               SUMMIT HEIGHT 17930 FT (5465 M)
.
SOURCES OF INFORMATION: GOES-8 SATELLITE INFRARED AND MULTISPECTRAL
IMAGERY. 
.
ERUPTION DETAILS: ERUPTION AT 10/0145 UTC TO FL300.
.
DETAILS OF ASH CLOUD: AN ERUPTION OF THE VOLCANO WAS DETECTED IN
SATELLITE IMAGERY BEGINNING WITH THE 0145 UTC IMAGE. THE ASH HAS
BEEN MOVED TO THE SOUTHEAST AND IS ESTIMATED TO BE AT FL300 MOVING
AT APPROXIMATELY 50 KTS.  THE CURRENT ASH PLUME AS OF 0315 UTC IS
NOT UNIFORM IN DISTANCE AWAY FROM THE VOLCANO BUT CAN BE DESCRIBED
AS 70 KM (38 NMI) IN LENGTH EXTENDING FROM 18.57N 97.34W TO 18.67N
96.65W.  THIS AREA IS APPROXIMATELY 34KM (18NMI) WIDE.
.
TRAJECTORY: SOUTHEAST AT 40 TO 50 KTS.
.
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/messages.html
(all lower case except /VAAC/)
.
OUTLOOK: SEE SIGMETS
.
THE NEXT MESSAGE WILL BE ISSUED AROUND 12/1000 UTC.
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
NNNN
"Attached Graphic Map Depicting Ash" 

""