SWOMCD
SPC MCD 290441
MNZ000-IAZ000-NEZ000-SDZ000-290615-
MESOSCALE DISCUSSION 1077
NWS STORM PREDICTION CENTER NORMAN OK
1141 PM CDT WED MAY 28 2008
AREAS AFFECTED...NRN NEB / SRN SD / SWRN MN / WRN IA
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 290441Z - 290615Z
ELEVATED TSTMS ARE EXPECTED TO INCREASE IN AREAL COVERAGE OVERNIGHT
WITH A THREAT OF MARGINALLY SEVERE HAIL WITH THE MOST INTENSE CELLS.
A WW IS NOT ANTICIPATED.
CLUSTERS OF ELEVATED TSTMS ARE SLOWLY INCREASING IN COVERAGE AND
INTENSITY OVER PORTIONS OF WRN INTO N-CNTRL NEB AS WELL AS OVER FAR
SERN SD AS OF 0420Z. THIS ACTIVITY IS OCCURRING TO THE N OF A WARM
FRONT BECOMING BETTER DEFINED FROM NERN CO EWD ACROSS NRN KS AND
ALONG THE NOSE OF 40 KT LLJ CURRENTLY DEVELOPING OVER THE CNTRL AND
SRN HIGH PLAINS. 00Z LBF OBSERVED AND RUC PROXIMITY SOUNDINGS
SUGGEST THAT MOISTENING IN THE 850-800 MB LAYER BENEATH STEEP
MIDLEVEL LAPSE RATE PLUME ARE RESULTING IN AIR MASS
DESTABILIZATION...A PROCESS WHICH IS BEING ENHANCED BY THE
STRENGTHENING LLJ.
FURTHER STORM INTENSIFICATION SHOULD OCCUR OVER THE NEXT SEVERAL
HOURS AS THE MOISTENING/DESTABILIZATION CONTINUES...SUPPORTING
MUCAPES APPROACHING 1000-1500 J/KG. A FEW OF THE MORE INTENSE
STORMS WILL BE CAPABLE OF MARGINALLY SEVERE HAIL.
..MEAD.. 05/29/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MPX...FSD...OAX...ABR...GID...LBF...UNR...
41830236 43260139 44249885 44569716 44629625 44339560
43519538 42759591 42259737 41419996 41250146
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