FVXX21 KNES 041852
VOLCANIC ASH ADVISORY
ISSUED: 2005APR04/1851Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/109

INFORMATION SOURCE: RADIOSONDE. GOES-9. 

ERUPTION DETAILS: POSSIBLE CONTINUOUS LOW LEVEL
ERUPTION OF GASSES AND LIGHT ASH SINCE 0900Z.

OBS ASH DATE/TIME: 04/1802Z

OBS ASH CLOUD: SFC/FL080 N1620E14540 - N1535E14547
- N1514E14504 - N1620E14540 MOVING S 10 KNOTS. 

FCST ASH CLOUD +6H: 05/0000Z SFC/FL08 N1620E14540
- N1521E14549 - N1505E14510 - N1620E14540 

FCST ASH CLOUD +12H: 05/0600Z SFC/FL080
N1620E14540 - N1519E14546 - N1513E14518 -
N1620E14540 

FCST ASH CLOUD +18H: 06/1200Z SFC/FL080
N1620E14540 - N1517E14547 - N1513E14518 -
N1620E14540 

REMARKS: THERE HAS BEEN A CONTINUOUS LOW LEVEL
PLUME OFF THE ISLAND FOR SEVERAL HOURS.  WE HAVE
BEEN UNABLE TO CONFIRM THE PRESENCE OF ASH. THE
PLUME HAS BEEN MOVING  SOUTH TOWARDS SAIPAN BUT
DISSIPATING BEFORE REACHING THE ISLAND. SAIPAN
TOWER REPORTS NO SULFUR SMELL OR REDUCED
VISIBLITY. THERE WAS A HOT SPOT NOTED IN IMAGERY
AT 1613Z.   ...

NEXT ADVISORY: WILL BE ISSUED BY 2005APR05/0045Z

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