FVXX20 KNES 280509
VOLCANIC ASH ADVISORY
ISSUED: 2005APR28/0508Z VAAC: WASHINGTON
VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540 AREA: MARIANA.ISLANDS
SUMMIT ELEVATION: 2585 FT (788 M)
ADVISORY NUMBER: 2005/212
INFORMATION SOURCE: GFS MODEL WINDS. GOES-9.
ERUPTION DETAILS: CONTINUOUS LOW LEVEL EMISSIONS.
OBS ASH DATE/TIME: 28/0413Z
OBS ASH CLOUD: SFC/FL090 20NM WIDE LINE BETWEEN
N1618E14538 - N1545E14429. ASH IS MOVING SW 5-10
KNOTS.
FCST ASH CLOUD +6H: 28/1000Z SFC/FL090 N1623E14534
- N1616E14537 - N1537E14533 - N1526E14359 -
N1603E14400 - N1623E14534
FCST ASH CLOUD +12H: 28/1600Z SFC/FL090
N1616E14537 - N1525E14527 - N1453E14339 -
N1555E14327 - N1616E14537
FCST ASH CLOUD +18H: 28/2200Z SFC/FL090
N1616E14537 - N1513E14525 - N1423E14337 -
N1542E14319 - N1616E14537
REMARKS: MAIN ASH PLUME NOW EXTENDS ABOUT 70 NM SW
OF THE VOLCANO AS LOW LEVEL WINDS HAVE SHIFTED.
WIND REGIME THROUGH THE FORECAST PERIOD IS
EXPECTED TO REMAIN LIGHT AND FROM THE NORTHEAST
KEEPING THE ASH PLUME TO THE SOUTHWEST OF THE
VOLCANO. IT SHOULD BE NOTED THAT A LARGE AREA OF
VOG EXTENDS NORTH AND THEN NORTHEAST OF THE
VOLCANO ROUGHLY ALONG AN AXIS FROM 16.7N144.8E TO
21.5N148.4E AND 55 NM WIDE. ...RUMINSKI
NEXT ADVISORY: WILL BE ISSUED BY 2005APR28/1115Z
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