[MCD] SWOMCD

Fri Aug 25 02:30:32 UTC 2006

ACUS11 KWNS 250232
SWOMCD
SPC MCD 250232 
WIZ000-ILZ000-IAZ000-250400-

MESOSCALE DISCUSSION 1877
NWS STORM PREDICTION CENTER NORMAN OK
0932 PM CDT THU AUG 24 2006

AREAS AFFECTED...CENTRAL AND SOUTHERN WI

CONCERNING...SEVERE THUNDERSTORM WATCH 745...

VALID 250232Z - 250400Z

SEVERE THUNDERSTORM WATCH 745 CONTINUES UNTIL 05Z ACROSS
CENTRAL/SOUTHERN WI. PRIMARY SEVERE THREAT THROUGH MID/LATE EVENING
WILL BE ACROSS SOUTHWEST WI.

UPSTREAM OF WATCH 745...THE MOST INTENSE ACTIVITY OVER THE PAST FEW
HOURS HAS BEEN ACROSS SOUTHEAST MN/WEST CENTRAL WI INTO EXTREME
NORTHEAST IA VIA LINEAR MCS ALONG/JUST NORTH OF WNW-ESE ORIENTED
QUASI-STATIONARY FRONT. LARGE HAIL/STRONG WIND GUSTS HAVE BEEN
COMMON...INCLUDING 66 MPH/74 MPH MEASURED GUSTS IN ROCHESTER
MN...AND ESTIMATED 70-80 MPH WINDS EARLIER IN TREMPEALEAU COUNTY WI.
MCS APPEARS LIKELY TO CONTINUE TO PREFERENTIALLY FAVOR THE IMMEDIATE
COOL SIDE OF THE SURFACE BAROCLINIC ZONE THROUGH LATE
EVENING...WITHIN A HIGHLY SHEARED ENVIRONMENT AND A RESERVOIR OF
MODERATE /MAINLY ELEVATED/ INSTABILITY. AS THE MCS MOVES INTO
SOUTHWEST WI...LARGE HAIL/DAMAGING WINDS APPEAR LIKELY TO INCREASE
FROM LA CROSSE TO THE RICHLAND CENTER/PRAIRIE DU CHIEN
AREAS...ALTHOUGH AIRMASS QUALITY/INCREASING INHIBITION SUGGESTS THE
EAST EXTENT OF APPRECIABLE SEVERE POTENTIAL IS UNCLEAR ACROSS
SOUTHERN WI. WELL NORTH OF THE LOW LEVEL BAROCLINIC ZONE...NAMELY
ACROSS CENTRAL WI AREAS NORTH/NORTHEAST OF I-90/I-94...PRIMARY
HAZARD WILL BE LOCALLY HEAVY RAINFALL/EPISODIC LARGE HAIL.

..GUYER.. 08/25/2006

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

ATTN...WFO...GRB...LOT...MKX...DVN...ARX...

44759077 44868994 44758938 44528875 44248803 43888783
42628804 42338891 42368990 42729087 43149117 43989108 

WWWW