SPC AC 242119
   
   DAY 1 CONVECTIVE OUTLOOK AMEND 1
   NWS STORM PREDICTION CENTER NORMAN OK
   0319 PM CST THU FEB 24 2005
   
   VALID 242000Z - 251200Z
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 35 SSW
   HUM HUM 15 SE MSY 35 SSW GPT.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 E AQQ AYS 40 WNW
   CHS 30 E ECG ...CONT... DAB 15 NNW PIE.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM CZZ RAL PRB 10 NNE
   MER 40 W TPH 40 SSW ELY CNY CEZ SAF HOB 25 ESE INK 30 ESE HDO 45 ENE
   CRP.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 SSW BPT 35 NW POE
   40 NNW ESF 20 NE HEZ 40 NNW MOB 35 SSE MOB.
   
   ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS SERN LA...
   
   AMENDED TO UPGRADE PORTIONS OF SERN LA TO A SLIGHT RISK
   
   ...COASTAL SERN LA...
   MODERATELY UNSTABLE AIR MASS OVER THE GULF OF MEXICO WILL SUPPORT
   CONTINUED EWD MOVEMENT OF MCS/BOW ECHO...CURRENTLY LOCATED OVER WRN
   GULF TO JUST INLAND OF SRN LA IN TERREBONNE COUNTY.  EARLY AFTERNOON
   SURFACE ANALYSIS SHOWED AN E-W BOUNDARY HAD RETREATED NWD TO ALONG
   AND JUST INLAND OF THE SERN LA COAST.  60 MPH WIND GUSTS HAVE BEEN
   REPORTED JUST OFFSHORE WITH THE BOW ECHO...WHILE REGIONAL RADARS
   INDICATED LOW-LEVEL ROTATION WITH THE ISOLATED STORMS DEVELOPING AND
   MOVING NWD IN ADVANCE OF THE BOW.  ENVIRONMENT ALONG COASTAL
   LOCATIONS OF SRN/SERN LA COAST WHERE THE E-W BOUNDARY HAS MOVED
   INLAND WILL BE SUPPORTIVE OF DAMAGING WIND GUSTS AND/OR AN ISOLATED
   TORNADO THREAT THROUGH 00Z.
   
   ...DISCUSSION FROM 20Z...
   
   ...SOUTHWEST STATES...
   UPPER LOW WILL REMAIN OVER THE SOUTHWEST STATES THIS FORECAST PERIOD
   WITH SEVERAL SHORT WAVE TROUGHS ROTATING AROUND ITS PERIPHERY. COLD
   MID LEVEL TEMPERATURES ASSOCIATED WITH THE LOW AND LARGE SCALE
   ASCENT WITH EACH OF THE SHORT WAVES HAVE ALLOWED CU/TSTM DEVELOPMENT
   THIS AFTERNOON PER VIS IMAGERY/LIGHTNING DATA FROM THE LOWER CO
   RIVER VALLEY TO THE AZ/NM BORDER REGION.  HAIL WITH SOME REPORTS
   APPROACHING AND/OR EXCEEDING SEVERE LEVELS WILL BE POSSIBLE WITH ANY
   OF THIS ACTIVITY GIVEN THE COLD TEMPERATURES ALOFT AND STEEP LAPSE
   RATES. HOWEVER...OVERALL SEVERE THREAT SHOULD REMAIN TOO LOW FOR A
   CATEGORICAL RISK.
   
   ...LOWER RIO GRANDE VALLEY...
   SURFACE ANALYSIS SHOWED OUTFLOW BOUNDARY ASSOCIATED WITH PRIMARY
   SEVERE THREAT HAS MOVED SWD THROUGH BRO...WHILE COLD FRONT CONTINUED
   TO MOVE SLOWLY SWD ACROSS SOUTH CENTRAL TX.  VIS IMAGERY SHOWED SOME
   CU/TSTM DEVELOPMENT OVER THE MOUNTAINS OF MEXICO.  STEEP LAPSE RATES
   IN ADVANCE OF THE COLD FRONT COMBINED WITH STRONG DEEP LAYER SHEAR
   WILL BE SUPPORTIVE OF A HAIL THREAT WITH ANY STORMS THAT ARE ABLE TO
   MOVE EWD INTO THE LOWER RIO GRANDE VALLEY.  HOWEVER... OVERALL
   SEVERE THREAT SHOULD REMAIN TOO SMALL FOR A CATEGORICAL RISK.
   
   ..PETERS.. 02/24/2005
   
   ...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 0100Z