STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK
DAY 2 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWI47 KWNS.
VALID 221200Z - 231200Z
NO SVR TSTM AREAS FCST.
GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 30 SSW BLI
20 ENE SLE 40 S EUG CEC.
GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 NNW DAB 30 S TLH
10 W MAI 30 SSW CSG 45 WNW MCN 30 SSE AHN CAE CRE.
...SYNOPSIS...
UPPER PATTERN WILL CONTINUE TO FEATURE COLD UPPER TROUGH ACROSS ERN
NORTH AMERICA AND A RIDGE ACROSS THE WEST INTO THE MIDDLE OF THE
WEEK. THE WEAK DISTURBANCE NOW LOCATED ACROSS THE CNTRL/SRN PLAINS
WILL MOVE ESEWD AND GET ABSORBED INTO LONGWAVE TROUGH ACROSS THE
SERN STATES EARLY WEDNESDAY. MEANWHILE...VORT MAX WILL MOVE INTO
THE PAC NW LATE WEDNESDAY.
...SERN STATES...
A FEW TSTMS COULD BE ONGOING AT THE BEGINNING OF THE PERIOD ACROSS
NRN/CNTRL PORTIONS OF AL/MS/GA WITHIN WEAK WARM ADVECTION REGIME
ASSOCIATED WITH BAROCLINIC ZONE SETTLING SWD. CONVECTION SHOULD
SHIFT EWD OFF THE ATLANTIC COAST DURING THE MIDDAY HOURS. ELEVATED
CONVECTION...INCLUDING A FEW TSTMS...MAY DEVELOP LATER IN THE
AFTERNOON AS THE BAROCLINIC ZONE MOVES SWD INTO SRN GA AND NRN FL.
FORECAST SOUNDINGS SUGGEST MAINTENANCE OF 6.5 C/KM MIDLEVEL LAPSE
RATES IN THE AREA OF WARM ADVECTION ABOVE THE SURFACE FRONT WHERE
SUFFICIENT SUPPORT/INSTABILITY WILL EXIST FOR AT LEAST ISOLD TSTMS.
...PAC NW...
POST FRONTAL AIR MASS SHOULD SPREAD ACROSS THE PAC NW WEDNESDAY
NIGHT. STEEPENING LAPSE RATES AND MOIST ONSHORE FLOW NORTH OF THE
MIDLEVEL JET AXIS SHOULD ENCOURAGE DEVELOPMENT OF LOW TOPPED
CONVECTION WITH ISOLD LIGHTNING ALONG AND WEST OF THE COASTAL
RANGES OF WA/ORE.
..RACY.. 01/21/03
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED FOR 0800Z
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