FVXX20 KNES 130505 CCA
VOLCANIC ASH ADVISORY -CORRECTION
ISSUED: 2005AUG13/0505Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/668

INFORMATION SOURCE: GFS MODEL WINDS. RADIOSONDE.
PILOT REPORT. GOES-9. USGS. 

ERUPTION DETAILS: CONTINUOUS EMISSTION OF ASH AND
GASES

OBS ASH DATE/TIME: 13/0413Z

OBS ASH CLOUD: SFC/FL200 N1645E14531 - N1621E14542
- N1525E14532 - N1514E14419 - N1642E14422 -
N1645E14531 MOVING SW -NW 10-15 KNOTS. 

FCST ASH CLOUD +6H: 13/1000Z SFC/FL200 N1728E14525
- N1617E14542 - N1459E14500 - N1521E14326 -
N1724E14407 - N1728E14525 

FCST ASH CLOUD +12H: 13/1600Z SFC/FL200
N1754E14553 - N1618E14543 - N1459E14359 -
N1743E14400 - N1754E14553 

FCST ASH CLOUD +18H: 13/2200Z SFC/FL200
N1822E14659 - N1720E14658 - N1617E14544 -
N1550E14359 - N1717E14400 - N1818E14511 -
N1822E14659 

REMARKS: ...CORRECTION FOR OBS ASH TIME AND
FORECAST TIMES.... WITH SCATTERED CLOUDS OVER THE
AREA AND WHAT APPEARS TO BE A THUNDERSTORM OVER
THE ISLAND SOME FAINT ASH CAN BE SEEN MOVING
SOUTHWEST TO NORTHWEST FROM THE VOLCANO.  A PILOT
REPORT HELPED FIX THE HEIGHT TO BELOW FL200.  THE
LOWER LEVEL WINDS WILL CONTINUE TO TAKE THE ASH
WEST HOWEVER THE UPPER WINDS ARE FORECAST TO
GRADUALY CHANGE TO TAKE ASH NORTH TO NORTHEAST
OVER TIME.  ...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2005AUG13/1045Z

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