MESOSCALE DISCUSSION 0755
NWS STORM PREDICTION CENTER NORMAN OK
0518 PM CDT WED APR 30 2008
AREAS AFFECTED...FAR EASTERN WY/NEB PANHANDLE/SOUTHWEST SD
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 302218Z - 010015Z
SCATTERED THUNDERSTORMS SHOULD CONTINUE TO DEVELOP FROM FAR EASTERN
WY INTO THE NEB PANHANDLE/SOUTHWEST SD THROUGH EARLY EVENING. THE
STRONGEST STORMS WILL BE CAPABLE OF STRONG WIND GUSTS/HAIL. A WATCH
IS NOT ANTICIPATED.
LATEST SURFACE ANALYSIS FEATURES A COLD FRONT ANGLING FROM WESTERN
SD INTO THE NORTHERN NEB PANHANDLE TO NEAR A SURFACE LOW ACROSS
SOUTHEAST WY. THUNDERSTORMS HAVE RECENTLY DEVELOPED ALONG/JUST NORTH
OF THE FRONT ACROSS EAST CENTRAL WY...WITH DEEPLY MIXED CUMULUS
CONTINUING TO EXPAND IN THE WARM SECTOR ACROSS THE NEB PANHANDLE PER
VISIBLE SATELLITE IMAGERY. AS STORMS INCREASE OVER THE NEXT FEW
HOURS...REGIONAL PROFILERS/88D DERIVED WINDS REFLECT STRONGLY VEERED
PROFILES WITH 40+ KT OF DEEP LAYER SHEAR...WHICH WILL AID IN STORM
ORGANIZATION. THE STRONGEST STORMS WILL BE CAPABLE OF STRONG WIND
GUSTS THROUGH EARLY EVENING...ESPECIALLY ALONG/SOUTH OF THE FRONT
ACROSS THE NEB PANHANDLE WITHIN AN ENVIRONMENT CHARACTERIZED BY
INVERTED-V PROFILES WITH 1000+ J/KG DOWNDRAFT CAPE. SOME HAIL MAY BE
POSSIBLE AS WELL...PERHAPS MOST LIKELY NORTH OF THE FRONT ACROSS THE
NORTHERN NEB PANHANDLE INTO SOUTHWEST SD. ISOLATED/MARGINAL NATURE
OF THE OVERALL THREAT WILL LIKELY PRECLUDE A WATCH ISSUANCE.
..GUYER.. 04/30/2008
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