SPC AC 191619
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1019 AM CST SAT FEB 19 2005
   
   VALID 191630Z - 201200Z
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 SSW ONP 30 WSW SLE
   25 ENE EUG 50 ESE EUG 50 NNW LMT 20 NE MHS 50 SW SVE 60 S TVL BIH
   P38 BCE CNY GJT GUC SAF 4CR CNM MAF 25 SE DRT.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 WNW JBR 15 NW HRO
   25 WSW JLN 15 N MHK 20 SE LNK 40 N FNB 30 SE OTM 15 WSW SPI 30 SSE
   MVN 10 SSE PAH DYR 15 WNW JBR.
   
   ...NO SVR TSTM AREAS FORECAST...
   
   SURFACE AND UPPER LOW OFF CA COAST PAST SEVERAL DAYS IS OPENING UP 
   AND MOVING INLAND AS A WEAKENING TROUGH IN BROAD WSWLY FLOW. NEXT
   S/WV TROUGH DROPPING SWD THRU B.C. WILL REDEVELOP UPPER LOW W OF CA
   SUN UNDER CONTINUING REX BLOCK REGIME.
   
   ...SRN CA...
   AS S/WV TROUGH MOVES INLAND THIS MORNING...SHEAR AND INSTABILITY
   CONTINUE FAVORABLE FOR LOW TOPPED THUNDERSTORMS.  WITH SFC-1KM SHEAR
   UPWARDS TO 25 KT COUPLED WITH TERRAIN ENHANCEMENT WILL MAINTAIN
   THREAT FOR STORM ROTATION UNTIL TROUGH MOVES E OF COASTAL AREAS. 
   PRIMARY CONCERN WITH THESE ROTATING STORMS WILL BE BRIEF/ MARGINALLY
   SEVERE HAIL...GUSTY WINDS AND POSSIBLY A WEAK TORNADO/WATERSPOUT
   THREAT WEST OF MOUNTAINS.
   
   STORMS EXPECTED TO DIMINISH LATER THIS AFTERNOON AS SUBSIDENCE IN
   WAKE OF S/WV TROUGH DEVELOPS.
   
   ...SRN AZ...
   WITH 7C/KM LAPSE RATES IN PLACE OVER SWRN U.S. ALONG WITH A MOIST
   ENVIRONMENT AHEAD OF S/WV TROUGH...INSTABILITY WILL BE MORE THAN
   SUFFICIENT TO REDEVELOP THUNDERSTORMS ACROSS AZ THIS AFTERNOON. 
   INTENSITY/SEVERE POTENTIAL DEPENDENT PRIMARILY ON AMOUNT OF SURFACE
   HEATING.  CURRENT CLEARING LOWER CO RIVER VALLEY SUGGESTS HEATING
   WILL OCCUR ALLOWING SURFACE TEMPS TO CLIMB INTO THE LOW/MID 60S
   CENTRAL DESERT VALLEYS.
   
   A FEW STRONG/SEVERE THUNDERSTORMS WILL LIKELY DEVELOP DURING
   AFTERNOON WITH PRIMARY POTENTIAL LARGE HAIL.  WITH DEEP LAYER SHEAR
   OF 45-50KT ROTATING STORMS ARE POSSIBLE WHICH WILL ENHANCE POTENTIAL
   OF LARGE HAIL AND STRONG WINDS.
   
   ..HALES.. 02/19/2005
   
   ...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 BY 2000Z