Severe Storm Outlook Narrative (AC)
Issued by NWS

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000
ACUS11 KWNS 250834
SWOMCD
SPC MCD 250833
NEZ000-250930-

MESOSCALE DISCUSSION 0724
NWS STORM PREDICTION CENTER NORMAN OK
0333 AM CDT WED MAY 25 2016

AREAS AFFECTED...PORTIONS OF SWRN/S-CNTRL NEB

CONCERNING...SEVERE THUNDERSTORM WATCH 209...

VALID 250833Z - 250930Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 209
CONTINUES.

SUMMARY...TSTMS WILL CONTINUE TO MOVE ACROSS PORTIONS OF
SWRN/S-CNTRL NEB DURING THE PRE-DAWN HOURS...POSING A RISK FOR
GENERALLY SMALL HAIL. STRONG-TSTM POTENTIAL IS BECOMING CONFINED TO
SRN PARTS OF WW 209 AND AREAS FARTHER W...AND WW 209 SHOULD BE
ALLOWED TO EXPIRE BY 10Z.

DISCUSSION...ELEVATED CONVECTION CONTINUES TO BACKBUILD ACROSS PARTS
OF SWRN/S-CNTRL NEB -- WITHIN A ZONE OF ASCENT PRECEDING A
LOW-AMPLITUDE IMPULSE SPREADING ACROSS PARTS OF THE CNTRL HIGH
PLAINS. THIS ACTIVITY IS ROOTED ABOVE A STATICALLY STABLE BOUNDARY
LAYER...SUCH THAT SFC COOLING HAS BEEN THE RESULT OF NOCTURNAL
DIABATIC EFFECTS AND ANTECEDENT CONVECTIVE PROCESSING. THE LNX/UEX
VWPS IMPLY GENERALLY MODEST VERTICAL SHEAR THROUGH THE LOWER/MIDDLE
PORTIONS OF THE CONVECTIVE-CLOUD LAYER -- THOUGH SUFFICIENT FOR
OCCASIONALLY ORGANIZED CONVECTIVE STRUCTURES AMIDST 500-1000 J/KG OF
MUCAPE. THE AFOREMENTIONED CONVECTION WILL CONTINUE TO SPREAD
EWD/ESEWD THROUGH THE PRE-DAWN HOURS...THOUGH THE LIMITED
BUOYANCY/VERTICAL SHEAR SHOULD SUPPORT GENERALLY SUB-SEVERE HAIL. AN
INSTANCE OF ISOLATED MARGINALLY SVR HAIL CANNOT BE RULED OUT.

..COHEN.. 05/25/2016

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

ATTN...WFO...GID...LBF...GLD...

LAT...LON   40800164 41009974 40949860 40279838 40079958 40190148
            40520188 40800164




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