SPC AC 281719
   
   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1119 AM CST TUE DEC 28 2004
   
   VALID 291200Z - 301200Z
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM ONP 45 NNW MFR 50 WSW
   MHS 20 SSW RBL 35 ESE SAC 25 N FAT 45 NE BFL 30 NW DAG 40 SW LAS 50
   S SGU 35 ESE GCN 30 SSW SOW 20 SW SAD 25 SE FHU.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 40 WSW ALO 45 SW LSE
   20 ENE MSN 10 SE CGX 10 WSW DNV 35 SSE SPI 40 SW UIN 40 SSW OTM 40
   WSW ALO.
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...SYNOPSIS...
   THE DEEP MID LEVEL LOW JUST OFF THE SRN CA COAST WILL BECOME AN OPEN
   WAVE /WITH SEVERAL EMBEDDED SPEED MAXIMA/ AND EJECT ENEWD ACROSS THE
   ROCKIES/PLAINS IN RESPONSE TO ANOTHER SHORTWAVE TROUGH MOVING SEWD
   FROM THE GULF OF ALASKA.  STEEP LAPSE RATES/WEAK INSTABILITY WILL
   ACCOMPANY THE EJECTING CA TROUGH ACROSS THE SW EARLY IN THE
   PERIOD...WHERE ISOLATED THUNDERSTORMS WILL BE POSSIBLE.  THE THREAT
   FOR THUNDERSTORMS SHOULD GRADUALLY DIMINISH LATER TOMORROW ACROSS
   THE ROCKIES AS THE MID LEVEL TROUGH MOVES INLAND AWAY FROM THE
   MOISTURE SOURCE AND LOSES AMPLITUDE...THOUGH VERY ISOLATED LIGHTNING
   STRIKES STILL MAY OCCUR.  LATE IN THE PERIOD...A FEW THUNDERSTORMS
   WILL BE POSSIBLE ACROSS COASTAL AREAS OF NRN CA/ORE AS THE GULF OF
   ALASKA TROUGH MOVES INLAND.  
   
   ELSEWHERE...LOW-LEVEL MOISTURE WILL CONTINUE TO SPREAD NEWD FROM THE
   SRN PLAINS TO THE MID MS VALLEY IN CONJUNCTION WITH LEE CYCLOGENESIS
   ACROSS THE CENTRAL AND NRN PLAINS.  ELEVATED INSTABILITY MAY BECOME
   SUFFICIENT FOR ISOLATED THUNDERSTORMS IN A STRONG WAA PATTERN LATE
   IN THE PERIOD ACROSS THE MID MS VALLEY.
   
   ..THOMPSON.. 12/28/2004
   
   ...NOTICE...
   FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND
   LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK
   GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO
   HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3.  THE
   INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED.
   
   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0800Z