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Displaying AFOS PIL: SWOMCD Product Timestamp: 2003-05-07 07:27 UTC
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770 ACUS11 KWNS 070727 SWOMCD SPC MCD 070727 MOZ000-TNZ000-ARZ000-MSZ000-LAZ000-TXZ000-OKZ000-ALZ000-071000- MESOSCALE DISCUSSION 0813 NWS STORM PREDICTION CENTER NORMAN OK 0227 AM CDT WED MAY 07 2003 AREAS AFFECTED...NE TX...NRN LA...AR. CONCERNING...SEVERE TSTM POTENTIAL...TORNADO WATCH 279... VALID 070727Z - 071000Z SEVERAL CLUSTERS OF SEVERE TSTMS -- INCLUDING A FEW SUPERCELLS -- WILL MOVE EWD ACROSS CENTRAL/ERN AR NEXT COUPLE HOURS. LARGE/PERSISTENT HEAVY-PRECIP SUPERCELL MOVING INTO NWRN LA...BETWEEN SHV AND AR BORDER -- SHOULD CONTINUE RIGHT-MOVING EWD ACROSS MUCH OF NRN TIER LA COUNTIES WITH POTENTIAL FOR TORNADOES...DESTRUCTIVE HAIL AND SEVERE GUSTS. PRESENT STORM MOTIONS YIELDS UP TO 500 J/KG SRH IN 0-3 KM AGL LAYER FOR NRN LA. MODIFIED RAOB AND RUC SOUNDING SHOWS INCREASINGLY SHALLOW MOIST LAYER WITH WWD EXTENT...HOWEVER CELLS ARE DEVELOPING ALONG COLD FRONT AND BEHIND SUPERCELL...ACROSS PORTIONS NE TX...WITH POTENTIAL FOR SEVERE. 2000-300 J/KG MUCAPE IS COMMON IN AREAS NOT ALREADY WORKED OVER BY CONVECTION...ALONG WITH FAVORABLE VERTICAL SHEAR PROFILES FOR BOTH SUPERCELLS AND DAMAGING BOW ECHOES. ACTIVITY IS GRADUALLY MERGING INTO LARGE MCS AND ADDITIONAL WW MAY BE REQUIRED IN NEXT HOUR OR TWO FOR NRN MS. ..EDWARDS.. 05/07/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...PAH...MEG...JAN...LZK...SHV...TSA...FWD...BMX...HUN... 32059659 33999557 36439296 36408951 32049214 32049214 34419072 34418812 32008893