SPC AC 141952
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0152 PM CST SUN DEC 14 2003
   
   VALID 142000Z - 151200Z
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 W FMY 35 E ORL.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 SSW WAL 30 W DOV
   25 ENE ABE 20 E POU 25 ESE BOS.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 SSW SEA 70 NNE MFR
   20 N MHS 10 NE SVE 20 WNW OGD 25 NNW GJT 30 NNE CEZ 55 WSW FMN 70 N
   INW 40 SW GCN 55 SSW LAS 15 WNW EDW 25 NW SMX.
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...MID-UPPER FL KEYS TO EXTREME S FL...
   BAND OF THUNDERSTORMS WITH EMBEDDED BOW STRUCTURES EXTENDED FROM 20
   N PBI TO 20 E EYW AT 1930Z.  TROPICAL AIR MASS ALONG AND E OF THIS
   CONVECTIVE ACTIVITY REMAINS MODERATELY UNSTABLE WITH SURFACE
   DEWPOINTS IN THE LOWER 70S.  30-45 KT OF DEEP LAYER SHEAR WILL
   CONTINUE TO SUPPORT THE POTENTIAL OF AN ISOLATED DAMAGING WIND GUST
   OR PERHAPS A TORNADO THROUGH ABOUT 22Z.  AFTER THAT TIME...THIS
   CONVECTIVE LINE WILL MOVE OFFSHORE...THUS DECREASING ANY ADDITIONAL
   SEVERE THREAT.
   
   ...DELMARVA TO SRN NEW ENGLAND...
   UPPER TROUGH MOVING EWD ACROSS THE ERN U.S. THIS AFTERNOON WILL
   BECOME NEGATIVELY TILTED AS IT LIFTS NEWD OVER THE NERN TO MID
   ATLANTIC STATES OVERNIGHT.  SURFACE LOW /JUST OFF THE SERN VA COAST
   AT 18Z/ WILL INTENSIFY THROUGH THE REST OF THE FORECAST PERIOD AS IT
   MOVES NNEWD ALONG THE COAST TO NEAR BOS BY 12Z MONDAY. THE
   DEEPENING SYSTEM WILL STRENGTHEN LOW-UPPER LEVEL WIND FIELDS WITH
   STRONG LOW-LEVEL WAA AND THETA-E ADVECTION SUPPORTING THE POTENTIAL
   FOR ISOLATED LIGHTNING STRIKES FROM THE DELMARVA TO SRN NEW ENGLAND.
   
   
   ...WRN WA/ORE AND CA TO THE GREAT BASIN...
   COLD MID-LEVEL TEMPERATURES ASSOCIATED WITH AN UPPER TROUGH ALONG
   THE WEST COAST WILL CONTINUE TO SUPPORT AN UNSTABLE ENVIRONMENT WITH
   CONVECTIVE SHOWERS/ISOLATED THUNDERSTORMS ALONG THE COASTAL REGIONS
   OF WA/ORE/CA AND INLAND ACROSS CA THIS AFTERNOON.  LIMITED MOISTURE
   WILL...HOWEVER...CONTINUE TO LIMIT THE RISK OF STRONG THUNDERSTORMS.
   GENERAL THUNDERSTORM THREAT WILL SHIFT FURTHER INLAND ACROSS THE
   GREAT BASIN THIS EVENING/OVERNIGHT AS THE COLD POOL STEEPENS LAPSE
   RATES OVER THIS AREA...WITH THE UPPER TROUGH REACHING THE ROCKIES BY
   12Z MONDAY.
   
   ..PETERS.. 12/14/2003
   
   ...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 1 OUTLOOK IS SCHEDULED FOR 0100Z