617
ACUS48 KWNS 070920
SWOD48
SPC AC 070919
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0319 AM CST SAT DEC 07 2019
VALID 101200Z - 151200Z
..DISCUSSION
DEEP UPPER TROUGH IS EXPECTED TO COVER MUCH OF THE CENTRAL AND
EASTERN CONUS AT THE BEGINNING OF THE PERIOD (I.E. 12Z D4/TUESDAY).
MEDIUM-RANGE GUIDANCE IS IN GOOD AGREEMENT THAT THIS TROUGH WILL
GRADUALLY SHIFT EASTWARD ON D4/TUESDAY AND D5/WEDNESDAY WHILE SLOWLY
LOSING AMPLITUDE. A COLD FRONT IS EXPECTED TO MOVE ACROSS THE
EASTERN CONUS ON D4/TUESDAY, WITH A COOL AND STABLE AIR MASS
ANTICIPATED IN ITS WAKE ON D5/WEDNESDAY AND MUCH OF D6/THURSDAY.
ANOTHER SOUTHERN-STREAM SHORTWAVE TROUGH MAY MOVE ACROSS THE
SOUTHERN PLAINS AND INTO THE SOUTHEAST ON D7/FRIDAY AND THE
MID-ATLANTIC ON D8/SATURDAY.
ISOLATED THUNDERSTORMS ARE POSSIBLE AHEAD OF THE FRONT ON D4/TUESDAY
BUT THE OVERALL SEVERE POTENTIAL IS LOW. THUNDERSTORMS MAY ALSO
OCCUR AHEAD OF THE SOUTHERN-STREAM SYSTEM LATE IN THE WEEK, BUT
RUN-TO-RUN AND MODEL-TO-MODEL VARIABILITY LIMITS FORECAST
CONFIDENCE.
..MOSIER.. 12/07/2019
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