SPC MD 739

MD 0739 CONCERNING SEVERE THUNDERSTORM WATCH 258…259… FOR E-CNTRL KS…W-CNTRL MO

MESOSCALE DISCUSSION 0739
NWS STORM PREDICTION CENTER NORMAN OK
0724 PM CDT SUN MAY 06 2012

AREAS AFFECTED...E-CNTRL KS...W-CNTRL MO

CONCERNING...SEVERE THUNDERSTORM WATCH 258...259...

VALID 070024Z - 070200Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
258...259...CONTINUES.

SUMMARY...SPORADIC SEVERE THREAT SHOULD LARGELY EXIST WITH
SLOW-MOVING TSTM CLUSTERS ACROSS E-CNTRL KS INTO W-CNTRL MO.

DISCUSSION...CONVECTIVE COVERAGE HAS GRADUALLY INCREASED WITHIN A
TSTM COMPLEX INVOF KANSAS CITY METRO AREA...FED BY THE NRN FRINGE OF
LOWER 70S SURFACE DEW POINTS AND A STRONGLY UNSTABLE AIR MASS /PER
MODIFIED 00Z TOP RAOB/. HOWEVER...WITH DEEP-LAYER SHEAR REMAINING
MODEST /AROUND 20 KT PER EAX VWP DATA/ AND ONLY WEAK LOW-LEVEL MASS
RESPONSE EXPECTED THIS EVENING...ANY SEWD PROPAGATION WOULD BE
DEPENDENT ON HAVING SUFFICIENT COLD POOL DEVELOPMENT.
HOWEVER...EARLIER CONVECTION OVER BOTH SWRN AND NERN MO HAS
STABILIZED THESE REGIONS TO SOME EXTENT /PER 00Z SGF RAOB/ AND
BREEDS UNCERTAINTY OVER THE LONGEVITY OF THE RISK FOR ISOLATED
SEVERE HAIL/DAMAGING WINDS LATER THIS EVENING.

..GRAMS.. 05/07/2012

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

ATTN...WFO...LSX...SGF...EAX...TOP...ICT...

LAT...LON   39479446 39979355 39989246 39689221 39209213 38619211
            38009231 37669268 37579347 37819571 38299607 39479446

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