FVXX20 KNES 211025
VOLCANIC ASH ADVISORY
ISSUED: 2005MAY21/1025Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/307

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS

OBS ASH DATE/TIME: 21/0902Z

OBS ASH CLOUD: SFC/FL080 N1844E14358 - N1837E14444
- N1636E14541 - N1603E14535 - N1623E14414 -
N1844E14358 MOVING NW 10-15 KNOTS. SFC/FL100
N1728E14513 - N1709E14547 - N1613E14654 -
N1513E14551 - N1600E14454 - N1728E14513 MOVING S
10-15 KNOTS. 

FCST ASH CLOUD +6H: 21/1500Z  SFC/FL080
N1902E14345 - N1835E14455 - N1645E14541 -
N1554E14536 - N1627E14359 - N1902E14345 SFC/FL100
N1714E14504 - N1705E14625 - N1439E14632 -
N1441E14443 - N1714E14504 

FCST ASH CLOUD +12H: 21/2100Z  SFC/FL080
N1821E14325 - N1659E14538 - N1606E14541 -
N1608E14353 - N1629E14319 - N1821E14325 SFC/FL100
N1710E14444 - N1705E14503 - N1631E14602 -
N1356E14553 - N1408E14410 - N1710E14444 

FCST ASH CLOUD +18H: 22/0300Z  SFC/FL080
N1901E14314 - N1651E14536 - N1551E14537 -
N1609E14314 - N1901E14314 SFC/FL100 N1725E14504 -
N1703E14543 - N1426E14512 - N1453E14317 -
N1642E14335 - N1725E14504 

REMARKS: ASH PLUME STILL VERY DISTINCT IN
MULTISPECTRAL IMAGERY. ASH AT OR BELOW FL080 IS
MAINLY MOVING TO THE NW WHILE ASH BETWEEN FL080
AND FL100 HAS BEEN DRIFTING SLOWLY AND IS NOW
MOVING TO THE SOUTH SOUTHEAST. MODEL FORECASTS
INDICATE ASH AT FL100 WILL CONTINUE TO VEER AND
MOVE TOWARD THE WEST BY THE END OF THE FORECAST
PERIOD. ...RUMINSKI

NEXT ADVISORY: WILL BE ISSUED BY 2005MAY21/1630Z

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