FVXX20 KNES 042058
VOLCANIC ASH ADVISORY
ISSUED: 2004OCT04/2057Z   VAAC: WASHINGTON

VOLCANO: ST. HELENS 1201-05
LOCATION: N4612W12211   AREA: US-WASHINGTON

SUMMIT ELEVATION: 8363 FT (2549 M)

ADVISORY NUMBER: 2004/010

INFORMATION SOURCE: GOES-12. GFS MODEL WINDS.
PILOT REPORT. GOES-10. USGS. CASCADES VOLCANO
OBSERVATORY, PORTLAND WFO

ERUPTION DETAILS: STEAM AND SOME ASH AT 04/1645Z.

OBS ASH DATE/TIME: 04/2030Z

OBS ASH CLOUD: SFC/FL120 N4616W12133 - N4556W12110
- N4552W12119 - N4610W12210 - N4611W12208 -
N4616W12133 MOVING E 10 KNOTS. 

FCST ASH CLOUD +6H: NOT AVBL

FCST ASH CLOUD +12H: NOT AVBL

FCST ASH CLOUD +18H: NOT AVBL

REMARKS: THE STEAM AND ASH PLUME CONTINUES TO
DRIFT TO THE EAST SOUTHEAST.  THIS PLUME IS
BELIEVED TO BE PRIMARILY STEAM WITH SOME ASH. 
SATELLITE IMAGERY THROUGH 2030Z INDICATES THAT THE
PLUME IS BEGINNING TO DISAPATE AND IS BECOMING
DIFFICULT TO DISCERN IN SATELLITE IMAGERY. ...

THIS PRODUCTS HEADER WILL CHANGE FROM KWBC TO KNES
EFFECTIVE OCT 28, 2004.

NEXT ADVISORY: WILL BE ISSUED BY 2004OCT05/0300Z

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