ZCZC SPCSWODY1 ALL ACUS01 KWNS 191245 SPC AC 191244 STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS. VALID 191300Z - 201200Z NO TSTM AREAS FCST. ...SYNOPSIS... NRN STREAM SHORT WAVE TROUGH AND ASSOCIATED ARCTIC FRONT CURRENTLY MOVING RAPIDLY SEWD OUT OF SOUTH-CNTRL CANADA WILL REINFORCE THE VERY COLD AIRMASS ANCHORED ACROSS THE UPPER MS VALLEY...GREAT LAKES...AND NEW ENGLAND TODAY THROUGH TONIGHT. MEANWHILE...UPPER LOW OFF THE COAST OF SRN CA/NRN BAJA WILL DRIFT SLOWLY EWD AS BROAD RIDGING ALOFT PERSISTS OVER THE PACIFIC NORTHWEST. LARGE SCALE ASCENT AHEAD OF THE BAJA UPPER LOW IS EXPECTED TO SPREAD INLAND OVER THE LOWER CO RIVER VALLEY/SRN AZ BY EARLY MONDAY. HOWEVER... MOISTURE AND INSTABILITY WITH THIS FEATURE ARE EXPECTED TO REMAIN TOO LIMITED FOR TSTM FORMATION. ..CARBIN.. 01/19/03 NNNN |