Friday, April 13, 2012

"Tornado outbreak likely Saturday across Southern US"

PC AC 130602        DAY 2 CONVECTIVE OUTLOOK RESENT 1    NWS STORM PREDICTION CENTER NORMAN OK    0102 AM CDT FRI APR 13 2012        VALID 141200Z - 151200Z        ...THERE IS A HIGH RISK OF SVR TSTMS ACROSS PARTS OF OK AND KS...        ...THERE IS A MDT RISK OF SVR TSTMS ACROSS PARTS OF NW TX...CNTRL    AND WRN OK...CNTRL AND ERN KS...SE NEB...NW MO AND FAR SW IA...        ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE MID-MO    VALLEY...UPPER MS VALLEY...SRN PLAINS AND CNTRL PLAINS...        TORNADO OUTBREAK LIKELY ACROSS THE SRN AND CNTRL PLAINS NWD INTO THE    MID-MO VALLEY FROM SATURDAY AFTERNOON THROUGH SATURDAY NIGHT        ...SRN AND CNTRL PLAINS...    AN IMPRESSIVE UPPER-LEVEL LOW WILL MOVE EWD ACROSS FOUR CORNERS    REGION SATURDAY AS A POWERFUL 90 TO 110 KT MID-LEVEL JET EJECTS NEWD    INTO THE SRN AND CNTRL PLAINS. AHEAD OF THE SYSTEM...A CORRIDOR OF    MODERATE TO STRONG INSTABILITY IS FORECAST ACROSS ECNTRL KS...CNTRL    OK INTO NW TX. THIS COMBINED WITH STEEP MID-LEVEL LAPSE RATES AND    STRONG LOW-LEVEL SHEAR WILL BE VERY FAVORABLE FOR SEVERE STORMS AND    A TORNADO OUTBREAK WILL BE LIKELY ACROSS THE SRN AND CNTRL PLAINS    FROM LATE SATURDAY AFTERNOON LASTING THROUGH THE EVENING AND INTO    THE OVERNIGHT PERIOD. more