FVXX20 KWBC 122020
VOLCANIC ASH ADVISORY
ISSUED: 2001AUG12/2020Z   VAAC: WASHINGTON
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VOLCANO: TUNGURAHUA  1502-08
LOCATION: 0128S 7826W    AREA: ECUADOR
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SUMMIT ELEVATION: 16480 FT (5023 M)
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ADVISORY NUMBER: 2001/163
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INFORMATION SOURCE: GUAYAQUIL METEOROLOGICAL WATCH OFFICE. VISIBLE
AND INFRARED AND MULTISPECTRAL SATELLITE IMAGERY.  WIND FORECAST
FROM THE AVIATION MODEL.
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ERUPTION DETAILS: CONTINUOUS ERUPTION SINCE 06/1203Z.  
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DETAILS OF ASH CLOUD:  SATELLITE IMAGERY THROUGH 12/1915Z SHOWED
THERE HAD BEEN A PUFF OF ASH THAT OCCURRED AROUND 1700Z THAT WAS
MOVING IN A MORE NORTH NORTHWEST DIRECTION FROM THE NORMAL WESTERLY
DIRECTION OF THE ONGOING ERUPTION. BECAUSE OF THIS NEW DIRECTION OF
MOTION AND BASED ON THE FORECASTED WINDS IT APPEARS THE PUFF OF
THICKER ASH MAY BE TO A SLIGHTLY HIGHER ELEVATION OF AROUND FL340.
THIS HIGHER ASH PLUME EXTENDS FROM THE SUMMIT TO THE NORTH NORTHWEST
(332 DEGREES) AROUND 75 KM (40 NMI) TO POINT 0051S 7844W AND WAS
ROUGHLY 50 KM (27 NMI) WIDE.  THERE ALSO CONTINUES TO BE A SLIGHTLY
LOWER ASH PLUME TO FL270 THAT EXTENDS WEST (265 DEGREES) FROM THE
SUMMIT AROUND 270 KM (146 NMI) THAT WAS ROUGHLY 55 KM (30 NMI) WIDE.
OVERALL THE ASH APPEARS TO BE LESS DENSE AND IS DISSIPATING FASTER
THAN IN THE PAST FEW DAYS. 
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TRAJECTORY: ASH FROM FL300 TO FL34O WILL MOVE NORTH NORTHWEST AND
BECOME MORE NORTHERLY AROUND 10 KNOTS. ASH BELOW FL300 WILL MOVE
WESTERLY AROUND 10 TO 15 KNOTS.
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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THE NEXT ADVISORY WILL BE ISSUED BY 13/0230Z.
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REAL TIME SATELLITE IMAGERY AND VOLCANIC ASH ADVISORIES OFTEN
ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT
INTERNET URL ADDRESS   
HTTP://WWW.SSD.NOAA.GOV/VAAC/WASHINGTON.HTML
(ALL LOWER CASE EXCEPT /VAAC/)
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN"Attached Graphic Map Depicting Ash Only" 

"Graphic Map Depicting Ash"