FVXX20 KNES 031312
VOLCANIC ASH ADVISORY
ISSUED: 2005AUG03/1311Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/626

INFORMATION SOURCE: GUAM WFO. GFS MODEL WINDS.
GOES-9. USGS. 

ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS WITH A
POSSIBLE LARGER EMISSION STARTING ABOUT 09Z

OBS ASH DATE/TIME: 03/1202Z

OBS ASH CLOUD: SFC/FL420 N1618E14540 - N1520E14617
- N1451E14615 - N1517E14555 - N1618E14540 MOVING
SE 40 KNOTS. SFC/FL180 N1641E14617 - N1544E14605 -
N1618E14543 - N1639E14552 - N1641E14617 MOVING E
15 KNOTS. SFC/FL120 35NM WIDE LINE BETWEEN
N1619E14540 - N1306E14429. ASH IS MOVING S 5-10
KNOTS. 

FCST ASH CLOUD +6H: 03/1800Z SFC/FL400 N1611E14614
- N1604E14623 - N1434E14540 - N1356E14442 -
N1358E14400 - N1440E14523 - N1611E14614 SFC/FL250
N1717E14652 - N1602E14626 - N1611E14614 -
N1706E14626 - N1717E14652 SFC/FL120 N1656E14434 -
N1651E14505 - N1634E14546 - N1354E14429 -
N1407E14353 - N1605E14458 - N1617E14401 -
N1656E14434 

FCST ASH CLOUD +12H: 04/0000Z SFC/FL120
N1743E14504 - N1716E14624 - N1516E14516 -
N1613E14403 - N1723E14408 - N1743E14504 

FCST ASH CLOUD +18H: 04/0600Z NOT AVBL.

REMARKS: AT ABOUT 09Z THERE WAS A  POSSIBLE NEW
ERUPTION MARKED BY INCREASED SEISMICITY.  AT ABOUT
THE SAME TIME THERE DEVELOPED A POSSIBLE NEW ASH
CLOUD BELOW FL420.  THIS CLOUD IS SPREADING 
TOWARD THE NORTHEAST EAST AND SOUTHEAST AND IS
ALREADY STARTING TO DISSIPATE.   IN ADDITION THERE
IS ONGOING ACTIVITY THAT IS PRODUCING ITS USUAL
LOW LEVEL ASH PLUME TO THE SOUTHWEST.   ...

NEXT ADVISORY: WILL BE ISSUED BY 2005AUG03/1915Z

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