FVXX21 KWBC 221250
VOLCANIC ASH ADVISORY
ISSUED: 2003FEB22/1250Z VAAC: WASHINGTON
 
VOLCANO: POPOCATEPETL 1401-09
LOCATION: N1901W09837    AREA: MEXICO
 
SUMMIT ELEVATION: 17930 FT (5465 M)

ADVISORY NUMBER: 2003/043

INFORMATION SOURCE: GOES-8 IMAGERY. GFS MODEL WINDS FORECAST.     

ERUPTION DETAILS: NEW EXHALATION ABOUT 22/0835Z.

OBS ASH DATE/TIME: 22/1145Z

OBS ASH CLOUD: SFC/FL310 23NM WIDE LINE OF ASH EXTENDING BETWEEN
N1908W09623 N1919W09526 N2019W09506 MOVING E 65-75 KNOTS. 
SFC/FL350 21 NM WIDE LINE OF ASH EXTENDING BETWEEN N1824W08756
N2620W08506 MOVING NE 70-80 KTS.

FCST ASH CLOUD +6H: SEE SIGMETS

REMARKS: TWO ASH PLUMES EXISTED IN SATELLITE IMAGERY THROUGH
1145Z.  THE FIRST EXTENDED FOR 500 NM FROM THE CENTRAL GULF OF
MEXICO TO THE YUCATAN PENINSULA AND WAS ESTIMATED TO BE AROUND
FL350.  A SECOND SMALLER AREA OF ASH ESTIMATED NEAR FL310 WAS
LOCATED IN THE BAY OF CAMPECHE.  BOTH AREAS WERE MOVING RAPIDLY
EAST AND NORTHEAST.  PLEASE NOTE THAT ESTIMATES OF ASH TOPS ARE
APPROXIMATE.  MODEL WIND DATA SHOW UNIDIRECTIONAL FLOW THROUGH
MUCH OF THE TROPOSPHERE MAKING A PRECISE DETERMINATION OF ASH TOP
HEIGHT EXCEEDINGLY DIFFICULT.  TURK
      
TO OBTAIN VAA FROM THE WASHINGTON VAAC EMAIL NOTIFICATION SEE THE
WEB PAGE http://www.ssd.noaa.gov/VAAC/subscribe.html(ALL LETTERS
IN ADDRESS ARE IN LOWER CASE EXCEPT VAAC).  THE WASHINGTON VAAC
WILL MAKE EVERY EFFORT TO KEEP THE EMAIL NOTIFICATION UP AND
RUNNING.  HOWEVER IT IS NOT CONSIDERED AN OFFICIAL METHOD OF
DISTRIBUTION.

NEXT ADVISORY: WILL BE ISSUED BY 2003FEB22/1600Z.

NNNN"Attached Graphic Map Depicting Ash Only" 

""