DISCUSSION...EXPLOSIVE TSTM DEVELOPMENT IS EXPECTED WITHIN THE NEXT ONE TO TWO HOURS ALONG COLD FRONT MOVING THROUGH SERN KS AND NERN OK. WARM SECTOR AIR MASS IS QUITE MOIST WITH DEWPOINTS IN THE LOWER 70S. WHEN COUPLED WITH STEEP MIDLEVEL LAPSE RATES...ENVIRONMENT HAS BECOME STRONGLY TO EXTREMELY UNSTABLE WITH MLCAPE OF 3000-5000 J/KG. THE PRESENCE OF 35-40 KT WLY DEEP-LAYER SHEAR WILL BE SUPPORTIVE OF SUPERCELLS CAPABLE OF DESTRUCTIVE HAIL. MOREOVER...SWRN EXTENSION OF A 30-35 KT SWLY LLJ WILL BE MAINTAINED ACROSS THE REGION...RESULTING IN EFFECTIVE SRH VALUES OF 150-250 M2/S2 AND AN ASSOCIATED TORNADO THREAT. A STRONG TORNADO OR TWO IS POSSIBLE. ...MEAD