MD 0867 CONCERNING TORNADO WATCH 239… FOR WRN KS THROUGH WRN OK AND THE TX AND OK PANHANDLE
MESOSCALE DISCUSSION 0867
NWS STORM PREDICTION CENTER NORMAN OK
0736 PM CDT WED MAY 29 2013
AREAS AFFECTED...WRN KS THROUGH WRN OK AND THE TX AND OK PANHANDLE
CONCERNING...TORNADO WATCH 239...
VALID 300036Z - 300200Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 239 CONTINUES.
SUMMARY...PRIMARY SEVERE THREATS APPEARS TO HAVE TRANSITIONED TO
ISOLATED DAMAGING WIND AND LARGE HAIL. HOWEVER...A COUPLE OF
TORNADOES REMAIN POSSIBLE...MAINLY ALONG TRAILING PORTION OF LINES
IN SWRN OK AND SWRN KS. ADDITIONAL SEVERE STORMS DO NOT APPEAR
LIKELY FROM THE TX PANHANDLE INTO NWRN OK AND THESE AREAS CAN BE
CLEARED FROM THE CURRENT WW.
DISCUSSION...TWO AREAS OF ACTIVE CONVECTION PERSIST WITHIN WW 239.
ONE IS OVER WCNTRL THROUGH SWRN OK WHERE STORMS WILL LIKELY CONTINUE
DEVELOP AND POSSIBLY BACKBUILD SLIGHTLY AS A STRENGTHENING SLY LLJ
INTERACTS WITH THE NE-SW ORIENTED OUTFLOW BOUNDARY. OTHER STORMS
HAVE GROWN UPSCALE INTO A LINE OVER WRN KS WHERE A SEWD ADVANCING
COLD FRONT HAS MERGED WITH THE DRYLINE. PRIMARY THREATS WITH THIS
ACTIVITY APPEAR TO BE DAMAGING WIND AND LARGE HAIL GIVEN THE
DOMINANT LINEAR MODE. HOWEVER VERTICAL SHEAR IS SUPPORTIVE OF
EMBEDDED ORGANIZED STRUCTURES INCLUDING MESO-VORTICES AND
SUPERCELLS...SO ISOLATED TORNADOES STILL REMAIN POSSIBLE. STORM OVER
SWRN OK ALONG TRAILING END OF THE LINE CONTINUES TO EXHIBIT
SUPERCELL CHARACTERISTICS.
IN BETWEEN THE AFOREMENTIONED AREAS OF CONVECTION...NWRN OK AND THE
REMAINING WARM SECTOR OVER THE TX PANHANDLE HAVE BEEN STABILIZED BY
PREVIOUS CONVECTION AND DEWPOINTS ARE ONLY IN THE 50S SUGGESTING
ADDITIONAL SEVERE STORM DEVELOPMENT APPEARS UNLIKELY.
..DIAL.. 05/30/2013
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ICT...OUN...DDC...GLD...LUB...AMA...
LAT...LON 34089873 34830033 35130119 36810192 38290131 39080076
39069897 37899835 34089873
via SPC Forecast Products http://www.spc.noaa.gov/products/md/md0867.html
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