FVXX20 KNES 080729
VOLCANIC ASH ADVISORY
ISSUED: 2005AUG08/0729Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/647

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: ONGOING ASH EMISSIONS

OBS ASH DATE/TIME: 08/0625Z

OBS ASH CLOUD: SFC/FL240 N1711E14508 - N1624E14540
- N1616E14537 - N1704E14501 - N1711E14508 MOVING
NW 10-15 KNOTS. 

FCST ASH CLOUD +6H: 08/1230Z SFC/FL240 N1702E14459
- N1623E14539 - N1615E14539 - N1650E14452 -
N1702E14459 

FCST ASH CLOUD +12H: 08/1830Z SFC/FL240
N1704E14458 - N1623E14538 - N1615E14537 -
N1649E14452 - N1704E14458 

FCST ASH CLOUD +18H: 09/0030Z SFC/FL240
N1656E14456 - N1623E14538 - N1613E14538 -
N1645E14450 - N1656E14456 

REMARKS: MULTI-SPECTRAL IMAGERY AT 08/0625Z SHOWS
ASH MOVING TOWARDS THE NORTHWEST AT 10-15 KNOTS. 
THE FULL EXTENT OF THE ASH CANNOT BE SEEN DUE TO
CLOUD COVER.  THE USGS REPORTED A SPIKE IN SEISMIC
ACTIVITY OCCURING AROUND 08/0338Z FOR ABOUT 30
SECONDS. THIS MAY HAVE INCREASED ASH OUTPUT FOR A
SHORT TIME PERIOD. SEISMIC ACTIVITY DECREASED
QUICKLY THEREAFTER. ...KIBLER

NEXT ADVISORY: WILL BE ISSUED BY 2005AUG08/1330Z

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