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Displaying AFOS PIL: SWOMCD Product Timestamp: 2003-05-07 19:21 UTC
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478 ACUS11 KWNS 071922 SWOMCD SPC MCD 071921 MDZ000-PAZ000-VAZ000-DCZ000-WVZ000-072115- MESOSCALE DISCUSSION 0825 NWS STORM PREDICTION CENTER NORMAN OK 0221 PM CDT WED MAY 07 2003 AREAS AFFECTED...SRN PA/WRN MD/NRN VA CONCERNING...SEVERE THUNDERSTORM WATCH 286... VALID 071921Z - 072115Z LINE OF CONVECTION WAS INCREASING IN STRENGTH IN THE NW PORTION OF WW 286. ISOLATED HAIL OR DAMAGING WIND GUSTS WILL BE POSSIBLE OVER THE NEXT FEW HOURS. VIS SAT IMAGERY SHOWED THAT THE CIRRUS SHIELD HAS THINNED OVER NRN VA/SRN PA OVER THE LAST COUPLE HOURS. THIS HAS ALLOWED SFC TEMPS TO WARM INTO THE UPPER 70S WITH SFC DEWPS AROUND 60 CREATING SBCAPE VALUES AROUND 2000 J/KG. AS THE CONVECTIVE LINE MOVES INTO THIS HIGHER INSTABILITY...STRENGTHENING SHOULD OCCUR. THE BEST POTENTIAL FOR SEVERE APPEARS TO BE ACROSS THE SRN PORTION OF THE WW WHERE THE INSTABILITY IS HIGHER. DEEP LAYER SHEAR WAS AROUND 40 KT ACROSS THE ENTIRE WW SUGGESTING SEVERE STORMS REMAIN POSSIBLE. COLD AIR ALOFT AND STEEP LAPSE RATES AROUND 700 MB SUGGESTS THE CELLS MAY HAVE A HAIL POTENTIAL. IN ADDITION...THE STRONGER CELLS WITHIN THE LINE WILL HAVE A POTENTIAL FOR WIND DAMAGE. ..BROYLES.. 05/07/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...PHI...AKQ...CTP...LWX...PBZ... 38057871 38907885 40067841 40827871 41287892 41317774 41247705 40417679 39087644 38027619 38007742 38027832
000 ACUS11 KWNS 071922 SWOMCD SPC MCD 071921 MDZ000-PAZ000-VAZ000-DCZ000-WVZ000-072115- MESOSCALE DISCUSSION 0825 NWS STORM PREDICTION CENTER NORMAN OK 0221 PM CDT WED MAY 07 2003 AREAS AFFECTED...SRN PA/WRN MD/NRN VA CONCERNING...SEVERE THUNDERSTORM WATCH 286... VALID 071921Z - 072115Z LINE OF CONVECTION WAS INCREASING IN STRENGTH IN THE NW PORTION OF WW 286. ISOLATED HAIL OR DAMAGING WIND GUSTS WILL BE POSSIBLE OVER THE NEXT FEW HOURS. VIS SAT IMAGERY SHOWED THAT THE CIRRUS SHIELD HAS THINNED OVER NRN VA/SRN PA OVER THE LAST COUPLE HOURS. THIS HAS ALLOWED SFC TEMPS TO WARM INTO THE UPPER 70S WITH SFC DEWPS AROUND 60 CREATING SBCAPE VALUES AROUND 2000 J/KG. AS THE CONVECTIVE LINE MOVES INTO THIS HIGHER INSTABILITY...STRENGTHENING SHOULD OCCUR. THE BEST POTENTIAL FOR SEVERE APPEARS TO BE ACROSS THE SRN PORTION OF THE WW WHERE THE INSTABILITY IS HIGHER. DEEP LAYER SHEAR WAS AROUND 40 KT ACROSS THE ENTIRE WW SUGGESTING SEVERE STORMS REMAIN POSSIBLE. COLD AIR ALOFT AND STEEP LAPSE RATES AROUND 700 MB SUGGESTS THE CELLS MAY HAVE A HAIL POTENTIAL. IN ADDITION...THE STRONGER CELLS WITHIN THE LINE WILL HAVE A POTENTIAL FOR WIND DAMAGE. ..BROYLES.. 05/07/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...PHI...AKQ...CTP...LWX...PBZ... 38057871 38907885 40067841 40827871 41287892 41317774 41247705 40417679 39087644 38027619 38007742 38027832