WOUS64 KWNS 210353 WOU1 SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 641 NWS STORM PREDICTION CENTER NORMAN OK 953 PM MDT TUE AUG 20 2024 SEVERE THUNDERSTORM WATCH 641 REMAINS IN EFFECT UNTIL 1000 PM MDT FOR THE FOLLOWING LOCATIONS MTC033-069-071-105-210400- /O.CON.KWNS.SV.A.0641.000000T0000Z-240821T0400Z/ MT . MONTANA COUNTIES INCLUDED ARE GARFIELD PETROLEUM PHILLIPS VALLEY $$ ATTN...WFO...GGW...