FVXX20 KWBC 211923
VOLCANIC ASH ADVISORY
ISSUED: 2004APR21/1923Z VAAC: WASHINGTON
VOLCANO: TUNGURAHUA 1502-08
LOCATION: S0128W07826 AREA: ECUADOR
SUMMIT ELEVATION: 16480 FT (5023 M)
ADVISORY NUMBER: 2004/164
INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12
IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL
INSTITUTE.
ERUPTION DETAILS: LIGHT ASH VENTING
OBS ASH DATE/TIME: 21/1845Z
OBS ASH CLOUD: SFC/FL220 S0122W07834 - S0128W07826
- S0130W07833 - S0128W07832 - S0122W07834 MOVING
NW 10-15 KNOTS.
FCST ASH CLOUD +6H: NOT AVBL
FCST ASH CLOUD +12H: NOT AVBL
FCST ASH CLOUD +18H: NOT AVBL
REMARKS: WEATHER CLOUDS ARE CLEARING TO SHOW A
VERY LIGHT HAZE NEAR THE SUMMIT OF THE
VOLCANO...WHICH IS ASSUMED TO BE ASH. LATEST
GUAYAQUIL SIGMET INDICATED SOME SWWARD DRIFT OF
THE ASH BUT IT REMAINS NEAR SUMMIT AS SEEN IN
VISIBLE IMAGERY. THERE IS ALSO A SMALL AREA OF ASH
STILL MOVING NW AT THIS TIME. ...GALLINA
NEXT ADVISORY: WILL BE ISSUED BY 2004APR22/0130Z
NNNN
Attached Graphic Depicting Ash Only
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