709 
FPUS65 KBIL 171946
AFDBIL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
200 PM MDT THU JUL 17 1997

HOT IN THE EAST WITH DEW POINTS IN THE LOW 60S...CONVECTIVE TEMP IN
LOW 90S...DESTABILIZING ATMOSPHERE...HIGH CAPES ALL POINT TO AN ACTIVE
EVENING IN THE EAST. BEST SHEAR IN EXTREME EAST WHERE A GOOD BET FOR
SEVERE WEATHER AND POSSIBLE TORNADIC ACTIVITY PER PRE COORDINATION
COORDINATION CALL. SATELLITE PHOTOS INDICATE AT LEAST TWO S/V MOVING
INTO MONTANA. FIRST MOVING INTO WESTERN MONTANA MOVING INTO SOUTHERN
CANADA TRIGGERING SHOWERS AND/OR THUNDERSTORMS IN THE WEST. SECOND IN
NORTH CENTRAL NEVADA WILL BE THIS EVENINGS TRIGGER IN THE EAST. THIS
SYSTEM EXHIBITING A TWIST WITH THE TROUGH BECOMING MORE NORTH-SOUTH
ORIENTED. THIS IN THEORY WILL BRING MORE INSOLATION EAST OF THE DIVIDE
WHERE INSTABILITY ETC. WILL HELP TRIGGER A FEW SEVERE THUNDERSTORMS
WEST 1/2 OF CWA. THIS LOOKS TO BE THE SPLIT DEVELOPING PER MODELS AND
HAVE ADJUSTED POPS BELOW MOS IN THIRD PERIOD ACCORDINGLY. COOLING
EXPECTED NEXT COUPLE DAYS AS UPPER TROUGH MOVES OVER THE NORTHERN
ROCKIES FOR CONTINUED AFTERNOON CONVECTION. THORICHT

BIL TB 061/085 057/077 055 586433
LVM .. 057/082 054/075 ... 586433
HDN .. 063/087 058/079 ... 586433
MLS .. 064/087 062/081 ... 587433
4BQ .. 065/087 063/082 ... 587433
BHK .. 064/088 062/083 ... 587433
SHR TB 057/085 054/075 051 586433