FVXX20 KWBC 171600
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1600 UTC 17 FEB 1999 BY THE WASHINGTON VAAC
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COLIMA 99-004  MEXICO 19.51N 103.62W
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BACKGROUND:    COLIMA MEXICO (1401-04)
               SUMMIT HEIGHT 13451 FT (4100 M)
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SOURCES OF INFORMATION: GOES 8 VISIBLE INFRARED AND MULTISPECTRAL
IMAGERY. COLIMA OBSERVATORY.
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ERUPTION DETAILS: OCCURRED AT 17/0305 UTC.
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DETAILS OF ASH CLOUD:  SATELLITE IMAGERY THROUGH 1515 UTC CONTINUES
TO NOT SHOW ANY ASH CLOUD HOWEVER A HOT SPOT IS OCCASIONALY
DETECTED. AFTER CONSULTATION WITH THE COLIMA OBSERVATORY...WE ARE
ENDING THIS EVENT HOWEVER PLACING THE VOLCANO IN A WATCH STATUS. 
THE VOLCANO OBSERVATORY REPORTS THAT THE COLIMA VOLCANO REMAINS
UNSTABLE WITH THE POTENTIAL TO PRODUCE AN ERUPTION CLOUD WITH LITTLE
OR NO WARNING.  
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WE WILL CONTINUE TO MONITOR THE AREA AND IF THERE IS AN ASH CLOUD
OBSERVED OR REPORTED AT ANY ALTITUDE A VOLCANIC ASH ADVISORY
STATEMENT WARNING WILL BE ISSUED AS SOON AS POSSIBLE.  
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THE WATCH VAAS IS ISSUED ONLY FOR SEISMICALLY MONITORED VOLCANOES
AND BASED ON INFORMATION RECEIVED FROM THE GEOLOGICAL COMMUNITY.  A
WATCH VAAS WILL BE ISSUED DAILY WHEN INFORMATION IS RECEIVED TO
INDICATE THAT A VOLCANO IS RESTLESS AND HAS THE POTENTIAL FOR AN
EXPLOSIVE ERUPTION WITH LITTLE OR NO WARNING. NON-EXPLOSIVE LOW
LEVEL AND NEAR SUMMIT ACTIVITY MAY BE OCCURRING AT PRESENT.
SEE NOAA-ARL HOMEPAGE FOR TEST-VAFTAD AT:
HTTP://WWW.ARL.NOAA.GOV/VAFTAD.HTML (ALL LOWER CASE)
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THE NEXT MESSAGE WILL BE ISSUED AROUND 18/1600 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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