[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 211807
SWOMCD
SPC MCD 211806 
MIZ000-WIZ000-211930-

MESOSCALE DISCUSSION 1276
NWS STORM PREDICTION CENTER NORMAN OK
0106 PM CDT WED JUN 21 2006

AREAS AFFECTED...NRN WI / U.P. OF MI

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 211806Z - 211930Z

SEVERE THUNDERSTORMS WITH LARGE HAIL...DAMAGING WINDS AND ISOLATED
TORNADO WILL CONTINUE TO DEVELOP ACROSS FAR NRN WI AND WILL
INTENSIFY AS THEY MOVE EWD INTO THE UPPER PENINSULA OF MI. A WW
APPEARS LIKELY.

STRONG COOLING ALOFT WITH UPPER LEVEL SHORTWAVE TROUGH AND CONTINUED
SURFACE HEATING WILL CONTINUE TO DESTABILIZE AIR MASS ACROSS NRN WI
AND THE U.P. OF MI. STORMS ARE BEGINNING TO FORM ALONG COLD
FRONT/DEEPENING LOW PRESSURE TROUGH ACROSS NWRN WI...AND WILL
INTENSIFY WITH TIME. STRONG DEEP LAYER SHEAR VECTORS ORIENTED NEARLY
PERPENDICULAR TO THE BOUNDARY WILL FAVOR SUPERCELLS. RELATIVELY COLD
AIR ALOFT/STEEPENING LOW TO MID LEVEL LAPSE RATES WILL FAVOR VERY
LARGE HAIL AND INCREASING THREAT OF DAMAGING WINDS. IN
ADDITION...ALTHOUGH LOW LEVEL SHEAR IS NOT STRONG...IT MAY BE
SUFFICIENT FOR ISOLATED TORNADOES CANNOT BE RULED OUT ESPECIALLY
WITH SUPERCELLS MOVING TO THE RIGHT OF THE MEAN STORM MOTION VECTOR.

..JEWELL.. 06/21/2006

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

ATTN...WFO...MQT...GRB...DLH...ARX...MPX...

46079138 46959042 47548773 46508641 45748702 44678792
44739178 

WWWW