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Displaying AFOS PIL: SWOMCD Product Timestamp: 2003-05-07 19:57 UTC
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072 ACUS11 KWNS 071957 SWOMCD SPC MCD 071957 SDZ000-NDZ000-072200- MESOSCALE DISCUSSION 0826 NWS STORM PREDICTION CENTER NORMAN OK 0257 PM CDT WED MAY 07 2003 AREAS AFFECTED...WRN SD/WRN ND CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 071957Z - 072200Z CONVECTION SHOULD CONTINUE TO INCREASE ACROSS THE WESTERN DAKOTAS. THE MAIN THREAT WITH THE STORMS WILL BE HAIL. WW NOT ANTICIPATED ATTM. CONVECTION WAS DEVELOPING IN THE NRN HIGH PLAINS WEST OF AN AXIS OF LOW-LEVEL MOISTURE WITH DEWPOINTS IN THE LOWER TO MID 40S F. ONLY MARGINAL INSTABILITY WAS PRESENT WITH MLCAPE FROM 500-750 J/KG WITH THE HIGHEST INSTABILITY IN W-CNTRL SD. DEEP LAYER SHEAR WAS STRONGER ACROSS WRN ND WITH 0-6 KM SHEAR OF 40 KT. OVERALL... INSTABILITY AND DEEP LAYER SHEAR ARE MARGINAL FOR ROTATING STORMS. HOWEVER...A FEW MULTICELL STRONG/SEVERE STORMS COULD DEVELOP LATER THIS AFTERNOON. THE MAIN THREAT WILL BE HAIL WITH 500 MB TEMPS AROUND -20 C. ..BROYLES.. 05/07/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...ABR...BIS...UNR... 43130386 44430391 48400391 48910284 48380152 43870144 43090163 43030296