[MCD] SWOMCD

Fri Apr 7 00:13:42 UTC 2006

ACUS11 KWNS 070012
SWOMCD
SPC MCD 070012 
IAZ000-MOZ000-KSZ000-NEZ000-070115-

MESOSCALE DISCUSSION 0447
NWS STORM PREDICTION CENTER NORMAN OK
0712 PM CDT THU APR 06 2006

AREAS AFFECTED...WRN IA / NWRN MO

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 070012Z - 070115Z

THREAT OF LARGE HAIL...LOCALLY DAMAGING WINDS AND PERHAPS A FEW
TORNADOES IS EXPECTED TO DEVELOP E OF WW 154 PRIOR 01-02Z.  A NEW WW
WILL LIKELY BE REQUIRED.

AS OF 2355Z...REGIONAL RADAR IMAGERY INDICATED WIDESPREAD TSTMS
ONGOING OVER PORTIONS OF ERN NEB...TO THE E OF OCCLUDING SURFACE LOW
OVER CNTRL NEB.  WITHIN THIS BROADER CONVECTIVE SHIELD...A MESOSCALE
CIRCULATION WAS OBSERVED LIFTING NEWD THROUGH
SEWARD...LANCASTER...SALINE...JEFFERSON AND GAGE COUNTIES.  OMA AND
TOP RADAR DATA INDICATE THE PRESENCE OF SMALLER-SCALE SUPERCELL
STRUCTURES WITHIN N-S BAND ALONG ERN EDGE OF THIS CIRCULATION AS FAR
S AS NEMAHA AND POTTAWATOMIE COUNTIES IN NERN KS.

PRESENCE OF DEEP-LAYER FORCING FOR ASCENT IN DIFLUENT REGION OF
UPPER SYNOPTIC SYSTEM SHOULD SUPPORT CONTINUED DEVELOPMENT NEWD INTO
WRN IA/NWRN MO THROUGH THE EVENING. DESPITE LARGELY MERIDIONAL MID
AND HIGH-LEVEL WIND FIELDS...BACKED SURFACE WINDS E/SE OF THE
SURFACE LOW ARE RESULTING IN VERTICAL SHEAR PROFILES SUPPORTIVE OF
SUPERCELLS WITH AN ANTICIPATED CONTINUING THREAT OF LARGE
HAIL...LOCALLY DAMAGING WIND GUSTS AND PERHAPS A FEW TORNADOES.

..MEAD.. 04/07/2006

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

ATTN...WFO...DMX...EAX...FSD...OAX...TOP...

42119626 42249580 42129513 41199411 39519384 39119413
38949469 39219512 

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