ZCZC SPCSWOMCD ALL
ACUS11 KWNS 170008 
SPC MCD 170008 
OKZ000-TXZ000-170215-

MESOSCALE DISCUSSION 0323
NWS STORM PREDICTION CENTER NORMAN OK
0708 PM CDT THU APR 16 2015

AREAS AFFECTED...PORTIONS OF THE ERN TX PANHANDLE AND FAR WRN OK

CONCERNING...TORNADO WATCH 59...64...

VALID 170008Z - 170215Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 59...64...CONTINUES.

SUMMARY...THE RISK FOR SEVERE THUNDERSTORMS INCLUDING TORNADOES
CONTINUES ACROSS TORNADO WATCHES 59 AND 64.

DISCUSSION...INTENSE CONVECTIVE CLUSTERS CONTINUE ACROSS THE
AREA...WITH SEMI-DISCRETE SUPERCELLS ADVANCING ACROSS WHEELER COUNTY
IN THE TX PANHANDLE AND ENTERING ROGER MILLS COUNTY OK FROM HEMPHILL
COUNTY TX. THESE SUPERCELLS WILL POSE THE GREATEST NEAR-TERM TORNADO
RISK...ESPECIALLY AS THE NOCTURNAL BOUNDARY-LAYER WIND MAXIMUM AND
STRENGTHENING LLJ ENLARGE THE LOW-LEVEL HODOGRAPH CORRESPONDING TO A
VERTICALLY VEERING WIND PROFILE. SPLITTING STORMS THAT DEVELOPED
DURING PEAK HEATING AMIDST LOW MLCINH CONTINUE ADVANCING NWD FROM
SWRN OK AND THE SERN TX PANHANDLE. IT IS POSSIBLE THAT SOME OF THIS
ACTIVITY MAY POSE A TORNADO RISK AS LOW-LEVEL SHEAR STRENGTHENS
AMIDST LOWERING LCLS/MODEST SFC TEMP-DEWPOINT SPREADS...IN ADDITION
TO LARGE HAIL. HOWEVER...LATER THIS EVENING...INCREASING STORM
INTERACTIONS COULD BREED UPSCALE GROWTH INTO ONE OR MORE CONVECTIVE
SYSTEMS...WITH DMGG WIND GUSTS AND SVR HAIL BECOMING THE PRIMARY SVR
CONCERNS. A TORNADO RISK WILL STILL EXIST.

..COHEN.. 04/17/2015

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

ATTN...WFO...OUN...AMA...

LAT...LON   34790059 35300051 35910002 36489988 36199952 35269940
            34889958 34790059 

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