MESOSCALE DISCUSSION 1174
   NWS STORM PREDICTION CENTER NORMAN OK
   0247 PM CDT WED JUN 17 2009
   
   AREAS AFFECTED...N CNTRL/NERN KS...S CNTRL/SWRN NEB...SWRN IA...NWRN
   MO
   
   CONCERNING...TORNADO WATCH 440...
   
   VALID 171947Z - 172015Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 440 CONTINUES.
   
   THREAT OF TORNADOES...VERY LARGE HAIL...AND DMGG WINDS CONTINUE FOR
   WW440. STORMS WILL APPROACH THE ERN EDGE OF THE WATCH WITHIN THE
   NEXT HOUR...AND AN ADDITIONAL WW DOWNSTREAM WILL BE LIKELY.
   
   INITIALLY ELEVATED SUPERCELLS HAVE BECOME ROOTED AT THE
   SURFACE...INDICATED BY A RAPID INCREASE IN ROTATION WITH CURRENT
   SUPERCELLS...HARD RIGHT TURNING MOTION...AND SEVERAL UNCONFIRMED
   REPORTS OF TORNADOES ON THE GROUND WITH THE MARSHALL/GAGE COUNTY
   STORM. VERY FAVORABLE HOT/MOIST INFLOW WILL MAINTAIN THESE
   SUPERCELLS...WITH STRONGLY VEERING WINDS AND ENHANCED BUOYANCY NEAR
   THE WARM FRONT ALLOWING ROTATION TO PERSIST. DUE TO STRONG
   ROTATION...STORMS HAVE TAKEN A TURN TOWARDS THE SOUTHEAST...AND WILL
   QUICKLY REACH THE ERN EXTENT OF THE WATCH WITHIN THE NEXT HOUR. AN
   ADDITIONAL WW WILL BE ISSUED DOWNSTREAM.
   
   FARTHER W...18Z SOUNDINGS REFLECT VERY LITTLE TO NO CINH
   REMAINS...AND INITIATION STILL REMAINS LIKELY OVER THE AREA
   PRIMARILY NEAR A LIFTING WARM FRONT THAT IS NOW IN SRN NEB. SIMILAR
   TO DOWNSTREAM STORMS...ENVIRONMENT REMAINS VERY FAVORABLE FOR LARGE
   SUPERCELLS. AN ADDITIONAL WATCH WILL BE ISSUED OVER E CNTRL/NERN
   CO...SRN NEB...AND NWRN KS. SEE MD 1173 FOR FURTHER INFORMATION.
   
   ..HURLBUT.. 06/17/2009
   
   
   ATTN...WFO...DMX...EAX...OAX...TOP...GID...LBF...GLD...
   
   LAT...LON   39819408 39519979 41379986 41629406 39819408