ZCZC SPCSWODY1 ALL
ACUS01 KWNS 200541
SPC AC 200535

STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK 
DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.

VALID 201200Z - 211200Z

NO SVR TSTM AREAS FCST.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 40 SSW DMN
15 WSW SVC 70 ESE SOW 60 ENE SOW 20 NW GUP 10 S CEZ 40 SSW MTJ
20 SE MTJ 20 E GUC 50 SW COS 25 NNE TAD 30 NE CAO 60 NNE AMA
15 NNW CSM 30 SE OKC 10 N MLC 15 NW FSM HRO 40 NE UNO 25 NNW MDH
15 SE MTO 25 NNW HUF 20 NE LAF 25 SE SBN 10 WNW LAN 30 SW OSC
20 SSE APN ...CONT... 10 NE EFK 20 S RUT TTN 25 SE NHK 45 E RIC
35 S RIC 65 N RWI 20 SW DAN 30 ENE HKY 35 N SPA 10 WSW AND
15 NE AHN 30 SSE AHN 55 SSW AGS 30 SSW SAV 35 NNE SSI.

...SYNOPSIS...
STRONG COLD FRONT CURRENTLY IN N TX EXTENDING NEWD INTO AR/MO/IL
WILL MOVE SE INTO THE NRN GULF OF MEXICO BY LATE IN THE PERIOD. AN
UPPER-TROUGH WILL MOVE EWD ACROSS THE NRN US AND BE POSITIONED NEAR
THE GREAT LAKES TUESDAY NIGHT.

...SERN LA/SRN-CNTRL MS/AL... 
THE MCS OVER CNTRL AND ERN OK WILL MOVE SLOWLY SEWD TONIGHT AND
EXPAND ACROSS N TX EARLY TUESDAY. OTHER CONVECTION WILL BE ONGOING
ALONG THE COLD FRONT ACROSS SERN MO/SRN IL/WRN KY. SFC DEWPOINTS IN
THE MID TO UPPER 60S WILL BE PRESENT AHEAD OF THE COLD FRONT ACROSS
MS/AL/LA. AS TEMPS HEAT UP THIS AFTERNOON...MODERATE INSTABILITY
SHOULD DEVELOP WITH MLCAPE FROM 1000 TO 2000 J/KG AHEAD OF THE
FRONT. ALTHOUGH LARGE-SCALE FORCING WILL BE WEAK...SFC HEATING AND
LOW-LEVEL CONVERGENCE ALONG THE FRONT WILL BE ENOUGH TO INITIATE
CONVECTION. WEAK DEEP LAYER SHEAR WITH 0-6 KM SHEAR VALUES AROUND
20 KT WILL KEEP CONVECTION MULTICELLULAR. THE SEVERE THREAT WILL BE
LIMITED DUE TO THE WEAK DEEP LAYER SHEAR. OTHERWISE...SFC DEWPOINTS
IN THE 70S F AND MODERATE INSTABILITY MAY BE ENOUGH FOR AN ISOLATED
SEVERE PULSE STORM. ISOLATED HAIL OR A DAMAGING WIND GUST WILL BE
POSSIBLE.      
 
..BROYLES.. 05/20/03

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