[MCD] SWOMCD

Sat Aug 5 21:27:04 UTC 2006

ACUS11 KWNS 052128
SWOMCD
SPC MCD 052127 
MNZ000-SDZ000-NDZ000-NEZ000-052330-

MESOSCALE DISCUSSION 1750
NWS STORM PREDICTION CENTER NORMAN OK
0427 PM CDT SAT AUG 05 2006

AREAS AFFECTED...ERN SD/NCNTRL NEB

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 052127Z - 052330Z

...SEVERE THREAT MAY BE INCREASING ACROSS PORTIONS OF SD/NEB
ALONG/AHEAD OF COLD FRONT AND LEE TROUGH. WATCH MAY BE NEEDED WITHIN
AN HOUR OR SO...

COLD FRONT EXTENDS FROM 40 WSW GFK TO MBG TO RAP...WITH BOUNDARY
LAYER CUMULUS DEVELOPMENT OBSERVED ON RECENT VISIBLE IMAGERY. IN
ADDITION...LEE TROUGH EXTENDS SWD INTO NEB/KS AND TSTMS ARE
DEVELOPING ALONG THAT BOUNDARY. WV LOOPS SHOW AN IMPULSE NOW MOVING
ACROSS CNTRL SD WHICH MAY BE SUPPORTING TSTM DEVELOPMENT. AIRMASS
WITHIN THE WARM SECTOR IN SD HAS BECOME VERY UNSTABLE AHEAD OF THE
COLD FRONT WITH TEMPS IN THE UPPER 80S/LOWER 90S. THE EXCEPTION IS
ACROSS SW MN...WHERE BILLOWS EVIDENT ON SATELLITE IMAGERY ARE
INDICATIVE OF THE STRONG INHIBITION. LAPSE RATES ACROSS CNTRL/ERN SD
ARE VERY STEEP...WITHIN AN ENVIRONMENT CHARACTERIZED BY 40+ KT OF
DEEP LAYER SHEAR. SUPERCELL TSTMS ARE POSSIBLE AS WELL AS SHORT
BOWING SEGMENTS. THIS AREA IS BEING MONITORED FOR A WATCH.

..TAYLOR.. 08/05/2006

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

ATTN...WFO...MPX...FGF...FSD...OAX...ABR...BIS...LBF...UNR...

41819794 41930088 44690135 45990037 45929678 44399629 

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