Skip Navigation Links www.nws.noaa.gov 
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
Storm Prediction Center
 
   

Search SPC
 

Apr-13-2003 0600 UTC Day 1 Convective Outlook
Categorical Graphic
1200 UTC Day 1 Outlook Graphic
      
Probabilistic Graphics (more info)
Tornado Damaging Wind Large Hail
1200 UTC Tornado probabilities graphic   1200 UTC Damaging wind probabilities graphic   1200 UTC Large hail probabilities graphic
(Select thumbnails to view full images)
   
   STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK 
   DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.
   
   VALID 131200Z - 141200Z
   
   NO SVR TSTM AREAS FCST.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 70 S MRF 25 WSW FST
   45 E HOB 20 SE PVW 20 WNW CDS 25 SW LTS 55 NNE ABI 50 E SJT
   25 SSE DRT.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 70 NE ISN 30 WNW GDV
   45 E BIL 30 S COD 45 NE EVW 40 W PUC 15 S SGU 55 ENE DAG 10 SW LGB.
   
   
   
   ...CA...
   
   UPPER LOW OFF THE ORE/CA COAST WILL DRIFT SEWD TOWARD NRN CA DURING
   THE PERIOD AS HIGH LEVEL SPEED MAX DROPS SWD THROUGH THE SACRAMENTO
   VALLEY INTO NRN SAN JOAQUIN VALLEY.  ONGOING CONVECTION AND
   WIDESPREAD PRECIPITATION WILL SERVE TO MAINTAIN MOIST BOUNDARY
   LAYER...ALTHOUGH SFC DEW POINTS WILL LIKELY HOLD IN THE UPPER
   40S...TO PERHAPS 50F.  IT APPEARS PARTIAL SUNSHINE WILL DEVELOP BY
   MID DAY ACROSS MUCH OF INTERIOR VALLEYS ALLOWING BOUNDARY LAYER
   DESTABILIZATION AND SBCAPES TO APPROACH OR EXCEED 500 J/KG.  THIS
   SHOULD RESULT IN LOW TOPPED THUNDERSTORM DEVELOPMENT BY 20Z. 
   VERTICAL SHEAR PROFILES FAVOR STORM ROTATION...AND ISOLATED
   SUPERCELLS MAY DEVELOP IF SUFFICIENT SUNSHINE CAN MATERIALIZE.  A
   FEW STORMS MAY PRODUCE MARGINALLY SEVERE HAIL...AND THERE APPEARS
   TO BE AT LEAST A LOW PROBABILITY FOR TORNADOES GIVEN SUPERCELL
   DEVELOPMENT.  ACTIVITY SHOULD SUBSIDE WITH LOSS OF DAYTIME HEATING.
   
   ...SWRN TX...
   
   BOUNDARY LAYER MOISTURE WILL SLOWLY INCREASE ACROSS THE EDWARDS
   PLATEAU REGION OF SWRN TX AND RIO GRANDE VALLEY.  WITH STRONG
   SUNSHINE EXPECTED...DRY LINE MAY BECOME A FOCUS FOR ISOLATED
   THUNDERSTORMS DURING THE LATE AFTERNOON/EARLY EVENING HOURS.
    
   ..DARROW.. 04/13/03
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 1300Z
        
Top/Latest Day 2 Outlook/Today's Outlooks/Forecast Products/Home