SPC MESOSCALE DISCUSSION 1969 FOR IA...KS...NE
CONCERNING...SEVERE THUNDERSTORM WATCH #717...

VALID 072253Z - 080100Z

NUMEROUS ELEVATED STORMS CONTINUE TO HEAD NEWD THRU WW#717. WW WILL
BE ALLOWED TO CONTINUE THRU 08/01Z EXPIRATION TIME AS STORMS WILL
CONTINUE TO AFFECT THESE AREAS. 

RECENT SFC ANALYSIS SHOWS COLD FRONT STRETCHING FROM NEAR
DSM...SSWWD THRU NERN KS...INTO LOW CNTR NEAR ICT. BEHIND COLD
FRONTAL BOUNDARY TEMPERATURES HAVE DROPPED INTO THE LOW-MID
70S...BUT DEWPOINTS REMAIN IN THE LOW-MID 60S. UEX VAD PROFILE
SHOWS NLY FLOW THRU 2KM WITH STRONG SSWLY FLOW ABOVE THIS
LAYER...REVEALING ELEVATED NATURE OF ACTIVITY. RUC2 SUGGESTS 850MB
LOW CNTR WILL SLOWLY HEAD NEWD TO WEST OF STJ THRU THE EVENING
HOURS LEAVING REGION IN NNELY BOUNDARY LAYER REGIME. MAIN THREAT
WILL CONTINUE TO BE LARGE HAIL WITH ELEVATED ACTIVITY AS WBZ
HEIGHTS WILL CONTINUE TO DROP AS COOLER MID-LEVEL AIR ADVECTS INTO
REGION FROM THE WEST.

..NADEN.. 09/07/01