FVXX20 KNES 130708
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL13/0708Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/535

INFORMATION SOURCE: GFS MODEL WINDS. RADIOSONDE.
GOES-9. 

ERUPTION DETAILS: ONGOING ASH EMISSIONS WITH
INTERMITTENT STRONGER PUFFS

OBS ASH DATE/TIME: 13/0625Z

OBS ASH CLOUD: SFC/FL310 N1623E14550 - N1611E14557
- N1608E14535 - N1619E14534 - N1623E14550 MOVING
SE 0-5 KNOTS. SFC/FL100 N1659E14623 - N1644E14701
- N1532E14554 - N1515E14413 - N1527E14408 -
N1659E14623 MOVING NE 0-5 KNOTS. 

FCST ASH CLOUD +6H: 13/1230Z SFC/FL200 N1750E14741
- N1655E14802 - N1522E14544 - N1455E14336 -
N1512E14320 - N1750E14741 

FCST ASH CLOUD +12H: 13/1830Z SFC/FL200
N1836E14730 - N1754E14814 - N1547E14652 -
N1528E14534 - N1619E14500 - N1727E14640 -
N1836E14730 

FCST ASH CLOUD +18H: 14/0030Z SFC/FL200
N1929E14748 - N1833E14844 - N1559E14635 -
N1543E14528 - N1635E14511 - N1704E14545 -
N1929E14748 

REMARKS: THE ASH NEAR FL360 FROM THE 2300Z
EXHALATION DISSIPATED THOUGH A NEW PUFF ESTIMATED
BY GUAM RADAR TO BE AROUND FL310 HAS REMAINED
STATIONARY. ANATAHAN IS IN A STAGNANT PATTERN
BEING TOO FAR SOUTH TO BE INFLUENCED BY THE
TROPICAL CYCLONE BUT TOO FAR NORTH TO BE IN THE
EASTERLIES. FORECAST IS FOR SIMILAR STAGNANT
CONDITIONS TO CONTINUE UNTIL ABOUT 12-18 PERIOD
WHERE LOW LEVEL WINDS BELOW FL100 WILL INCREASE
AND TRANSPORT ASH TOWARD THE NE AT 10-15 KTS.
...GALLINA

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL13/1315Z

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