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FXUS63 KUNR 080948
AFDUNR
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
248 AM MST SUN NOV 8 2009
DISCUSSION
09Z SFC ANALYSIS SHOWED A LOW PRESSURE CENTER OVER
EASTERN COLORADO WITH A WEAK TROUGH EXTENDING NORTHWARD INTO THE
WESTERN DAKOTAS. HIGH PRESSURE WAS LOCATED OVER THE NORTHERN ROCKIES.
REGIONAL RADAR MOSAIC WAS SHOWING A FEW LIGHT RETURNS RESULTING FROM
LIFT ASSOCIATED WITH AN UPPER SHORTWAVE CROSSING THE AREA...BUT
WITH DRY AIR IN THE LOWER LEVEL EXPECT ONLY A FEW SPRINKLES WILL BE
ABLE TO REACH THE GROUND. THE SHORTWAVE WILL MOVE EAST OF THE AREA
THIS MORNING...LEADING TO DECREASING CLOUDS. AN UPPER RIDGDE
BUILDING OVER THE AREA WILL BRING MORE DRY WEATHER FOR MONDAY AND
TUESDAY. HIGH TEMPERATURES WILL BE NEAR NORMAL TODAY AND MONDAY...
WITH WARMER TEMPERATURES ON TUESDAY AS THE UPPER RIDGE AXIS CROSSES
THE REGION.
EXTENDED...MAINLY DRY AND MILD WEATHER IS EXPECTED INTO THE MIDDLE
PART OF THE WEEK AS AN UPPER LEVEL RIDGE PASSES OVER THE AREA. TEMPS
WILL BE ABOVE SEASONAL AVERAGES. NEXT CHANCE FOR PRECIPITATION LOOKS
TO BE THURSDAY INTO FRIDAY AS AN UPPER LEVEL TROF DIGS ACROSS THE
NORTHERN ROCKIES. SOME TIMING AND TRACK ISSUES REMAIN BETWEEN THE
MEDIUM RANGE MODELS...BUT IT LOOKS LIKE BETTER CHANCES COULD BE
THURSDAY NIGHT INTO FRIDAY. TEMPERATURES WILL COOL TO NEAR AVERAGE
LATE IN THE WEEK.
AVIATION
VFR CONDITIONS CAN BE EXPECTED THROUGH THE FORECAST
PERIOD. A FEW LIGHT SHOWERS ARE POSSIBLE ACROSS NORTHERN AND EASTERN
PORTIONS OF THE FORECAST AREA THIS MORNING.
UNR WATCHES/WARNINGS/ADVISORIES
SD...NONE.
WY...NONE.
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