FVXX20 KNES 172032
VOLCANIC ASH ADVISORY
ISSUED: 20060817/2032Z   VAAC: WASHINGTON

VOLCANO: TUNGURAHUA 1502-08
LOCATION: S0128 W07826   AREA: ECUADOR

SUMMIT ELEVATION: 16480 FT (5023 M)

ADVISORY NUMBER: 2006/550

INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12. GFS
WINDS. GEOPHYSICAL INST. VAFTAD. ECUADOR SURFACE
OBSERVATIONS.

ERUPTION DETAILS: LARGE ERUPTION TO FL500 WITH
ONGOING EMISSION TO FL350

OBS ASH DATE/TIME: 17/1945Z

OBS ASH CLOUD: SFC/FL370 N0041 W08503 - N0036
W08056 - S0126 W07823 - S0311 W08011 - S0305
W08441 - N0041 W08503 MOVING W 15-20 KNOTS.
SFC/FL450 S0050 W07417 - S0246 W07354 - S0334
W07650 - S0243 W07834 - S0125 W07743 - S0050
W07417 MOVING E 5-10 KNOTS. 

FCST ASH CLOUD +6H: 18/0200Z SFC/FL370 N0114
W08837 - N0039 W08249 - S0124 W07824 - S0459
W07959 - S0411 W08702 - N0114 W08837 SFC/FL450
S0129 W07331 - S0420 W07332 - S0401 W07840 -
S0208 W07744 - S0129 W07331 

FCST ASH CLOUD +12H: 18/0800Z SFC/FL370 N0113
W08837 - N0044 W08304 - S0124 W07820 - S0348
W08004 - S0502 W08459 - N0113 W08837 SFC/FL450 NO
VA EXP.

FCST ASH CLOUD +18H: 18/1400Z SFC/FL370 N0145
W08507 - S0125 W07820 - S0316 W08002 - S0407
W08459 - N0145 W08507 

REMARKS: TWO AREAS OF ASH CAN STILL BE DETECTED
IN VISIBLE AND MULTISPECTRAL IMAGERY. THE HIGHER
LEVEL ASH NOW SEPARATED FROM THE VOLCANO AND
ESTIMATED TO AROUND FL470 IS MOVING SLOWLY EAST
AND SINKING SLIGHTLY SOUTH. THE ASH BELOW AROUND
FL370 IS MOVING WEST AND FANNING OUT SLIGHTLY
NORTH AND SOUTH.  BOTH AREA ARE DISSIPATING ON
THE LEADING EDGES.  THERE IS A STONG HOTSPOT
STILL DETECTED AT THE VOLCANO AND ASH FROM THE
CONTINUING ERUPTION IS MOVING WEST.   ...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2006AUG18/0230Z

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