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971 NOUS01 KWBC 101611 MESSAGE 97-21 WITH EFFECT FROM 15 JULY 1500 UTC THE FOLLOWING BULLETINS WILL BE AVAILABLE FROM RTH WASHINGTON AND THE WASHINGTON VAAC - FVXX20-24 KWBC VOLCANIC ASH ADVISORY STATEMENT /VAAS/ FOR WASHINGTON VAAC AREA VAAS WILL BE ISSUED AT LEAST EVERY 6 HRS MORE OFTEN IF POSSIBLE UNTIL IT IS DETERMINED THAT THE VOLCANIC ASH CLOUD CANNOT BE DISCERNED FROM SATELLITE IMAGERY OR IS NOT REPORTED FROM OTHER SOURCES. VAAS WILL CONTAIN ADVISORY NUMBER/TIME AND DATE OF MSG/ NAME AND GEOGRAPHIC LOCATION OF VOLCANO/ESTIMATED DATE AND TIME OF ERUPTION/SOURCES OF INFORMATION/LOCATION OF THE ASH CLOUD IN LAT/LON COORDINATES/ESTIMATED HEIGHT OF ASH CLOUD/ESTIMATED TRAJECTORY BASED ON SATELLITE OR OTHER INFORMATION/NEXT UPDATE DATE AND TIME. RTH WASHINGTON SENDS
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