DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 200939
SWOD48
SPC AC 200938

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0338 AM CST THU FEB 20 2014

VALID 231200Z - 281200Z

...DISCUSSION...
MEDIUM-RANGE MODELS PAINT A RELATIVELY CONSISTENT PICTURE WITH
RESPECT TO THE LARGE-SCALE PATTERN THROUGH ROUGHLY DAY 6-7...WITH
LONG-WAVE TROUGHING/CYCLONIC FLOW TO PERSIST ACROSS ALL BUT THE WRN
MOST-PORTIONS OF THE COUNTRY. WITH THIS TROUGH PROGGED TO REMAIN IN
PLACE...REPEATED INTRUSIONS OF POLAR AIR ARE PROGGED TO SPREAD SEWD
OUT OF CANADA DURING THE PERIOD...REINFORCING A COLD/STABLE AIRMASS
OVER MUCH OF THE CONUS.

ANY APPRECIABLE THUNDERSTORM POTENTIAL DURING THE PERIOD WOULD
LIKELY REMAIN OVER THE GULF OR OCCASIONALLY AS FAR N AS THE GULF
COAST STATES AND FL...AS THE MAIN LOW-LEVEL BAROCLINIC ZONE
OSCILLATES N/S. ATTM...ANY SEVERE RISK WOULD APPEAR TO BE LIMITED
AT BEST.

..GOSS.. 02/20/2014

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