FVXX20 KNES 211638
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL21/1638Z   VAAC: WASHINGTON

VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540   AREA: MARIANA.ISLANDS

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/572

INFORMATION SOURCE: GUAM WFO. HONOLULU MWO. GFS
MODEL WINDS. RADIOSONDE. GOES-9. USGS. 

ERUPTION DETAILS: ERUPTION AT 20/2215Z

OBS ASH DATE/TIME: 21/1613Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL200 MOVING TO NE 25-30 KNOTS.

FCST ASH CLOUD +6H: 21/2200Z 

FCST ASH CLOUD +12H: 22/0400Z 

FCST ASH CLOUD +18H: 22/1000Z 

REMARKS: ASH CANNOT BE SEEN IN SATELLITE IMAGERY
THROUGH 21/1613Z.  GUAM MET REPORTS SEISMIC
ACTIVITY STARTING AT 21/1452Z AND LASTING ABOUT 6
MINUTES.  ASH COULD NOT BE SEEN IN RADAR AFTER
THIS SEISMIC ACTIVITY.  CLOUD COVER FROM A
DEVELOPING TROPICAL SYSTEM AT 138E IS MAKING IT
DIFFICULT TO DETECT ASH OR ANY TYPE OF ACTIVITY IN
SATELLITE IMAGERY.  WE WILL CONTINUE TO CLOSELY
MONITOR. ...KIBLER

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL21/2245Z

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