[MCD] SWOMCD

Tue May 9 00:05:59 UTC 2006

ACUS11 KWNS 090004
SWOMCD
SPC MCD 090004 
NEZ000-090100-

MESOSCALE DISCUSSION 0797
NWS STORM PREDICTION CENTER NORMAN OK
0704 PM CDT MON MAY 08 2006

AREAS AFFECTED...WRN NEB

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 090004Z - 090100Z

SMALL CONVECTIVE CLUSTER APPEARS SIGNIFICANTLY FORCED BY MID-LEVEL
CYCLONIC VORTICITY CENTER EMBEDDED WITHIN BELT OF MODERATE TO STRONG
CYCLONIC MID/UPPER FLOW.  CAPE IS WEAK IN POST FRONTAL ENVIRONMENT
ACROSS THE NORTH CENTRAL HIGH PLAINS...BUT STEEP LOW-LEVEL LAPSE
RATES ARE ENHANCING DOWNDRAFTS AND POTENTIAL FOR STRONG GUSTY
SURFACE WINDS NEAR STORMS AS THEY PROGRESS TOWARD ALLIANCE.  WEAK
BUT EASTERLY UPSLOPE COMPONENT TO LOW-LEVEL FLOW ACROSS THE NEBRASKA
PANHANDLE IS ALSO ENHANCING VERTICAL SHEAR/SYSTEM RELATIVE WIND
CONFIGURATION BENEATH 45 TO 50 KT WESTERLY MID-LEVEL FLOW.  SHEAR/
THERMODYNAMIC REGIME BECOMES MORE UNFAVORABLE EAST OF THE ALLIANCE
AREA...AND STABILIZATION ASSOCIATED WITH ONSET OF SURFACE COOLING
SHOULD PROMOTE FURTHER WEAKENING OF STORMS BY 01-02Z.

..KERR.. 05/09/2006

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

ATTN...WFO...LBF...CYS...

41890334 42480289 42280223 41810230 41460282 41410333
41510365 41640381 

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