Severe Thunderstorm Warning 120, NWS Tulsa, OK

AREA FORECAST DISCUSSION FOR EASTERN OKLAHOMA
NATIONAL WEATHER SERVICE TULSA OK
825 PM CDT MON MAY 17 1993

TRYING TO GET EVERYTHING DONE EARLY THIS EVENING WITH SEVERE STORMS
IMMINENT. TORNADO WATCH JUST ISSUED AND LOOKS GOOD. LOCAL HELICITY
PROGRAM SHOWS STORMS MOVING INTO HIGHER STORM RELATIVE HELICITY VALUES
OVER EXTREME SE KS AND ERN AND CENTRAL OK. WOULD EXPECT INCREASING
TORNADIC POTENTIAL WITH STORMS WHICH DEVELOP AHEAD OF THE MAIN SQUALL
LINE. STORM SOUTHWEST OF CNU NOW APPROACHING THE OK BORDER ESPECIALLY
NEEDS TO BE WATCHED SINCE IT HAS RECENTLY MADE A HARD RIGHT TURN AND IS
HEADING INTO INCREASING INSTABILITY AND HELICITY.

WILL KEEP THE FFA GOING WITH ICT RADAR STILL SHOWING A LARGE AREA OF
RAIN FROM NORTHEAST TO WEST CENTRAL KS. COLD FRONT MAY ARRIVE AHEAD OF
SCHEDULE HELPED ALONG BY TSTM OUTFLOW. ATTM ANTICIPATE ONLY CHANGES TO
FCST WILL BE TO COVER CURRENT AND EXPECTED CONDITIONS IN THE FIRST
PERIOD.

.OK...FLASH FLOXOD WATCH TONIGHT FOR ZONES 26>32.

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