USA Weather — Severe Weather Division
This PWA expired and is no longer valid.
...SUMMARY...THUNDERSTORMS EXPECTED TO DEVELOP AS SUPERCELLS. ALL HAZARDS OF SEVERE WEATHER ARE POSSIBLE INCLUDING THE THREAT FOR STRONG TORNADOES...
...DISCUSSION...
SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE DRYLINE THIS AFTERNOON, NEAR THE AREA OF LOW PRESSURE. VERY STRONG INSTABILITY ALONG WITH STRONG DEEP LAYER SHEAR, AND MODEST STEEP LAPSE RATES WILL ALLOW FOR SUPERCELLS / DISCRETE STORMS TO DEVELOP INITALLY -- YIELDING FOR AN INCREASED TORNADO THREAT. WITHF ORCING FOR ASCENT FROM THE COLD FRONT, STORMS MAY TRANSITION TO A LINEAR MODE THIS EVENING. HOWEVER, WITH THE DISCRETE SETUP, VERY LARGE HAIL, DAMAGING WINDS THAT MAY BE POTENTIALLY DESTRUCTIVE, AND TORNADOES -- INCLUDING STRONG OR INTENSE TORNADOES WILL BE POSSIBLE. IF THE TRANSITION SWITCHES TO A LINEAR MODE, ALL MODES OF SEVERE WEATHER WILL STILL BE POSSIBLE.