FVXX20 KNES 121239
VOLCANIC ASH ADVISORY
ISSUED: 2005MAY12/1238Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/272

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS

OBS ASH DATE/TIME: 12/1202Z

OBS ASH CLOUD: SFC/FL80 N1631E14456 - N1623E14537
- N1617E14537 - N1620E14458 - N1631E14456 MOVING W
10 KNOTS. SFC/FL80 N1632E14453 - N1619E14501 -
N1505E14450 - N1559E14400 - N1559E14401 -
N1632E14453 MOVING W 10 KNOTS. 

FCST ASH CLOUD +6H: 12/1800Z  SFC/FL80 N1635E14450
- N1626E14536 - N1614E14538 - N1619E14453 -
N1635E14450 

FCST ASH CLOUD +12H: 13/0000Z  SFC/FL80
N1639E14447 - N1628E14536 - N1612E14537 -
N1616E14451 - N1639E14447 

FCST ASH CLOUD +18H: 13/0600Z  SFC/FL80
N1643E14441 - N1630E14536 - N1609E14538 -
N1616E14446 - N1643E14441 

REMARKS: MULTISPECTRAL IMAGERY SHOWS ASH THAT HAD
PREVIOUSLY BEEN MOVING SW IS NOW MOVING W AT
AROUND 10 -15 KTS SINCE ABOUT 0900Z.  THIS APPEARS
TO MATCH WINDS AT OR LESS THAN FL80.  THE PREVIOUS
ASH AREA TO THE SW OF THE SUMMIT IS THIN AND
DISSIPATING. ...BALDWIN

NEXT ADVISORY: WILL BE ISSUED BY 2005MAY12/1845Z

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