ZCZC SPCSWOMCD ALL
ACUS11 KWNS 150239 
SPC MCD 150239 
TXZ000-150415-

MESOSCALE DISCUSSION 0929
NWS STORM PREDICTION CENTER NORMAN OK
0939 PM CDT TUE JUN 14 2016

AREAS AFFECTED...A SMALL PART OF WRN N TX

CONCERNING...TORNADO WATCH 257...

VALID 150239Z - 150415Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 257 CONTINUES.

SUMMARY...THE SVR RISK IN WW 257 HAS BECOME CONFINED TO PARTS OF
KING AND KNOX COUNTIES. THE SVR RISK ELSEWHERE IS NOW NIL.

DISCUSSION...A SOLITARY SUPERCELL TSTM ENHANCED DURING THE DIURNAL
HEATING CYCLE WILL CONTINUE TO BE ACCOMPANIED BY SVR HAIL POTENTIAL
DURING THE NEXT HOUR OR TWO AS IT TRACKS ACROSS PARTS OF KING AND
KNOX COUNTIES IN WRN N TX. FOLLOWING INITIAL DECOUPLING OF THE
BOUNDARY LAYER...THE FDR VWP NOW SAMPLES AROUND 200 M2/S2 OF 0-1-KM
SRH AS LOW-LEVEL SHEAR HAS INCREASED. HOWEVER...MLCINH HAS BEEN SLOW
TO INCREASE OWING TO AMPLE LOW-LEVEL MOISTURE -- E.G. LOWEST-100-MB
MEAN MIXING RATIO AROUND 17.5 G/KG PER A MODIFIED 00Z OUN RAOB. AS
SUCH...SVR HAIL POTENTIAL...AND PERHAPS A BRIEF TORNADO...REMAIN
POSSIBLE THROUGH AROUND 0400Z-0430Z. THEREAFTER...THE NOCTURNAL
STABILIZATION OF THE BOUNDARY LAYER SHOULD BECOME INCREASINGLY
HOSTILE FOR CONVECTIVE MAINTENANCE...GIVEN THE DEARTH OF LARGE-SCALE
ASCENT. 

THE SVR RISK ACROSS THE REMAINDER OF THE WW IS NOW NIL.

..COHEN/CORFIDI.. 06/15/2016

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

ATTN...WFO...OUN...LUB...

LAT...LON   33650017 33710011 33819987 33719966 33589970 33540005
            33650017 

NNNN