FVXX23 KNES 271715
VOLCANIC ASH ADVISORY
ISSUED: 20070227/1714Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 16480 FT (5023 M)

ADVISORY NUMBER: 2007/021

INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12. GFS
WINDS. GEOPHYSICAL INST. 

ERUPTION DETAILS: ONGOING SEISMIC SIGNALS
INDICATIVE OF SMALL EXHALATIONS

OBS ASH DATE/TIME: 27/1645Z

OBS ASH CLOUD: SFC/FL210 7NM WIDE LINE BETWEEN
S0134 W07852 - S0128 W07826. ASH IS MOVING SW
15-20 KNOTS. 

FCST ASH CLOUD +6H: 27/2300Z SFC/FL210 15NM WIDE
LINE BETWEEN S0134 W07854 - S0128 W07826. 

FCST ASH CLOUD +12H: 28/0500Z SFC/FL210 15NM WIDE
LINE BETWEEN S0131 W07854 - S0128 W07826. 

FCST ASH CLOUD +18H: 28/1100Z SFC/FL210 15NM WIDE
LINE BETWEEN S0129 W07852 - S0128 W07826. 

REMARKS: UPDATE AND REPLACEMENT OF ADVISORY 020.
ASH CLOUD OBSERVED.   WAS HAVING DIFFICULT TIME
DETERMINING IF DARKER AREA IN VISIBLE IMAGERY WAS
ASH OR BREAKS IN THE CLOUD.  ADDITIONAL 1615Z
IMAGE HINTS THAT THE AREA IS ASH AND WITH THE
1645Z THE CLOUD MIX WITH THE ASH MAKING IT APPEAR
LESS LIKE BREAKS IN THE CLOUD.  CONFIDENCE IS
LOW...BUT SUSPECT AREA LINES UP WELL WITH
EXPECTED ASH MOVEMENT.  ...GALLINA

NEXT ADVISORY: WILL BE ISSUED BY 20070227/2315Z

Full Size Graphic



-Graphic Map Depicting Ash