[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 180558
SWOMCD
SPC MCD 180558 
IAZ000-NEZ000-SDZ000-180700-

MESOSCALE DISCUSSION 0901
NWS STORM PREDICTION CENTER NORMAN OK
1258 AM CDT WED MAY 18 2005

AREAS AFFECTED...NERN NEB AND WEST CENTRAL IA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 180558Z - 180700Z

ISOLATED STORMS WITH MARGINALLY SEVERE HAIL ARE POSSIBLE ACROSS NERN
NEB AND EXTREME WEST CENTRAL IA THE NEXT HOUR OR SO. STORMS EXPECTED
TO REMAIN TOO ISOLATED FOR A WW.

SMALL CLUSTER OF ELEVATED STORMS...LOCATED ABOUT 30 E OF OLU...ARE
MOVING NEWD AT 35-40 KT. STORM APPEARS TO BE MOVING ALONG SURFACE
FRONT AND MAY BE ACCOMPANIED BY A SMALL WAVE AS STRONGER CONVECTION
APPEARS TO BE IN CONJUNCTION WITH WEAK WARM ADVECTION WING TO THE
EAST OF THE WAVE. STRONG LOW LEVEL JET APPEARS TO BE SUPPLYING
ADDITIONAL LIFT AND STEEP LAPSE RATES AND SHEAR ABOVE CAPPING
INVERSION BETWEEN 700-850 MB IS SUFFICIENT TO MAINTAIN STRONG
UPDRAFTS. STORMS MAY PRODUCE MARGINALLY SEVERE HAIL THE NEXT HOUR OR
SO...BUT STORMS SHOULD SLOWLY WEAKEN AS THEY MOVE FURTHER NEWD AWAY
FROM STEEPER LAPSE RATES AND LOW LEVEL JET SLOWLY WEAKENS.

..IMY.. 05/18/2005

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

ATTN...WFO...DMX...FSD...OAX...

41299657 41539696 42129707 42529670 42529608 42099568
41909555 41519556 41339599 

WWWW