000 FPUS75 KBYZ 212145 NOWBYZ SHORT TERM FORECAST NATIONAL WEATHER SERVICE BILLINGS MT 344 PM MDT WED AUG 21 2002 MTZ038-212245- SOUTHERN BIG HORN- 344 PM MDT WED AUG 21 2002 .NOW... AT 343 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF STRONG THUNDERSTORMS 21 MILES WEST OF FORT SMITH...MOVING EAST AT 15 MPH. THE STORMS WILL AFFECT FORT SMITH BY 430 PM MDT. LOCALLY HEAVY RAIN...SMALL HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...AND WIND GUSTS AROUND 40 MPH CAN BE EXPECTED WITH THESE STORMS AS THEY PASS OVERHEAD. $$