[MCD] SWOMCD

Sat Nov 12 22:41:41 UTC 2005

ACUS11 KWNS 122240
SWOMCD
SPC MCD 122240 
IAZ000-MNZ000-SDZ000-122345-

MESOSCALE DISCUSSION 2407
NWS STORM PREDICTION CENTER NORMAN OK
0440 PM CST SAT NOV 12 2005

AREAS AFFECTED...SD...MN...IA

CONCERNING...TORNADO WATCH 858...

VALID 122240Z - 122345Z

CYCLIC SUPERCELLS WERE MOVING NEWD ACROSS CNTRL IA AT 40KT....AS
WELL AS NWRN IA. ENVIRONMENT AHEAD OF THIS ACTIVITY REMAINS
SUPPORTIVE FOR TORNADOES WITH LATEST DIAGNOSTIC DATA AND CELL
MOTIONS RESULTING IN EFFECTIVE SRH AROUND 350 M2/S2.

FARTHER NW...AREA ACROSS SERN SD INTO SWRN MN CONTINUES TO FAVOR
STRONG UPWARD MOTION IN STEEP LAPSE RATE ENVIRONMENT. EFFECTIVE
SHEAR IS SLIGHTLY WEAKER BENEATH UPPER TROUGH AND INTENSE STORMS
WITH HAIL WILL SPREAD INTO SWRN MN OVER THE NEXT HOUR.

..CARBIN.. 11/12/2005

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...DVN...ARX...MPX...DMX...FSD...OAX...

40729208 40669397 43769722 44519713 44519310 

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