FVXX20 KWBC 121003
VOLCANIC ASH ADVISORY
ISSUED: 2004AUG12/1000Z VAAC: WASHINGTON
VOLCANO: GALERAS 1501-08
LOCATION: N0113W07722 AREA: COLOMBIA
SUMMIT ELEVATION: 14029 FT (4276 M)
ADVISORY NUMBER: 2004/010
INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST.
ERUPTION DETAILS: ERUPTION BETWEEN 12/0445Z AND 12/0515Z
OBS ASH DATE/TIME: 12/0915Z
OBS ASH CLOUD: SFC/FL350 N0231W07628 N0116W07848 N0027W07829
S0013W07726 N0141W07539 N0231W07628. ASH MOVING NE AROUND 20
KNOTS AND E AROUND 15 KNOTS AND SW AROUND 15 KNOTS.
FCST ASH CLOUD +6H: NOT AVBL
FCST ASH CLOUD +12H: NOT AVBL
FCST ASH CLOUD +18H: NOT AVBL
REMARKS: THE ERUPTION CLOUD HAS SPREAD OUT MOSTLY NORTHEAST..
SOUTHEAST AND SOUTHWEST FROM THE SUMMIT AND HAS BECOME MUCH
MORE DIFFUSE IN THE IMAGERY. THE THIN APPEARANCE MAY BE DUE TO A
HIGHER STEAM THEN ASH CONTENT OF THE CLOUD BUT IT IS DIFFICULT TO
DETERMINE. THE HEIGHT IS ESTIMATED BASED ON LIGHT AND VARIABLE
MODEL WINDS. THE LEADING EDGE OF THE CLOUD HAS MOVED AROUND 100
NMI NORTHEAST OF SUMMIT AND 75 NMI SW INTO ECUADOR. NO FURTHER
INFORMATION HAS BEEN RECEIVED.
NEXT ADVISORY: WILL BE ISSUED BY 2004AUG/1600Z.
NNNN
"Attached Graphic Map Depicting Ash Only"
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