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790 NOUS1 KRWA 121606 WMSC NOUS1 CIRNOT 006/03 ATTN WMSCR USERS THE FLWG WAS RECD FROM THE NWS AVIATION WEATHER CENTER (AWC): "QTRLY BACKUP OF AWC CONVECTIVE SIGMETS BY THE AIR FORCE WX AGENCY WILL BE FM 21Z MAR 12 TO 05Z MAR 13. CONVECTIVE SIGMETS WIBIS IN 4 HOUR BACKUP FORMAT. AFWA COORDINATION NUMBER FOR TEST IS 402 294 1385." PER THE AWC, THIS MEANS THAT DURING THE BACKUP PERIOD, CONVECTIVE SIGMETS (WST) WILL NOT BE ISSUED. NON- CONVECTIVE SIGMETS (WS) WILL BE ISSUED EVERY FOUR HOURS AS CONDITIONS WARRANT. ATL WMSCR CKT CONTROL 121601Z ---------- End Forwarded Message ----------
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