FGUS85 KTFX 141806 RVSTFX MTZ008>015-044>055-151200 HYDROLOGIC STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 1158 AM MDT THU MAY 14 2015 AN UPPER LEVEL LOW PRESSURE SYSTEM CENTERED OFF THE WEST COAST WILL MOVE OVER THE NORTHERN GREAT BASIN BY FRIDAY. PRECIPITATION ASSOCIATED WITH THIS SYSTEM WILL BECOME WIDESPREAD FRIDAY THROUGH SATURDAY. HEAVIEST PRECIPITATION AMOUNTS ARE EXPECTED OVER CENTRAL AND SOUTHWEST MONTANA. RIVERS WILL RISE DURING THIS PERIOD AND SOME MAY BECOME FAST-RUNNING AND DANGEROUS. HOWEVER, FLOODING IS NOT EXPECTED AT THIS TIME. PRECIPITATION WILL DIMINISH SATURDAY NIGHT AND RIVERS WILL BE AFFECTED AT LEAST THROUGH SUNDAY. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TELEVISION OR RADIO STATION FOR THE LATEST INFORMATION. &&