[MCD] SWOMCD

Sat Jul 29 02:07:05 UTC 2006

ACUS11 KWNS 290208
SWOMCD
SPC MCD 290207 
WIZ000-MIZ000-MNZ000-290300-

MESOSCALE DISCUSSION 1657
NWS STORM PREDICTION CENTER NORMAN OK
0907 PM CDT FRI JUL 28 2006

AREAS AFFECTED...NRN WI INTO E-CNTRL MN

CONCERNING...SEVERE THUNDERSTORM WATCH 650...

VALID 290207Z - 290300Z

SEVERE STORMS CAPABLE OF LARGE HAIL AND LOCALLY DAMAGING WINDS MAY
PERSIST BEYOND 03Z...REQUIRING THE ISSUANCE OF AN ADDITIONAL WW.

AS OF 0155Z...DULUTH RADAR IMAGERY SHOWED CLUSTERS OF STRONG TO
SEVERE STORMS OVER DOUGLAS AND BAYFIELD COUNTIES IN FAR NWRN WI
MOVING GENERALLY 320/20 KTS.  THESE DATA INDICATE THAT REGENERATIVE
UPDRAFT DEVELOPMENT IS OCCURRING OVER WRN AND CNTRL PARTS OF DOUGLAS
COUNTY...PERHAPS WHERE 15-20 KT SWLY LLJ IS IMPINGING ON LOW-LEVEL
FRONTAL ZONE.  BASED ON DEGREE OF POTENTIAL INSTABILITY WITHIN
UPSTREAM AIR MASS AS OBSERVED BY 00Z MPX SOUNDING /MLCAPES AOA
3000-4000 J/KG/...THERE IS REASON TO BELIEVE THAT THESE PROCESSES
MAY CONTINUE BEYOND 03Z OVER NRN WI INTO E-CNTRL MN.  

35-45 KTS OF DEEP NWLY SHEAR INDICATES THE POTENTIAL FOR SUPERCELLS
AND POSSIBLE SMALL-SCALE BOW STRUCTURES WITH LARGE HAIL AND DAMAGING
WINDS BEING THE PRIMARY SEVERE WEATHER HAZARDS.

..MEAD.. 07/29/2006

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

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

45839381 46289352 46639248 46799144 46368993 45918902
45238932 44949014 44859177 45009322 

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