Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 271834
SWOMCD
SPC MCD 271834
ALZ000-FLZ000-MSZ000-LAZ000-272100-

MESOSCALE DISCUSSION 0474
NWS STORM PREDICTION CENTER NORMAN OK
0134 PM CDT WED APR 27 2016

AREAS AFFECTED...ERN MS...WRN AL

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 271834Z - 272100Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...AN ISOLATED SEVERE THREAT MAY DEVELOP ACROSS ERN AL AND
WRN AL THIS AFTERNOON. A FEW DAMAGING WIND GUSTS AND HAIL WILL BE
POSSIBLE WITH THE STRONGER THUNDERSTORMS. WW ISSUANCE MAY NEED TO BE
CONSIDERED ACROSS THE REGION.

DISCUSSION...LATEST SFC ANALYSIS SHOWS A CORRIDOR OF LOW-LEVEL
MOISTURE EXTENDING FROM SRN MS NWD ACROSS ERN MS INTO WRN TN...ALONG
WHICH SCATTERED THUNDERSTORMS ARE ONGOING. SFC TEMPS ACROSS ERN MS
AND WRN AL HAVE WARMED TO NEAR 80 F THIS AFTERNOON WHICH IS
CONTRIBUTING TO MODERATE INSTABILITY WITH MLCAPE VALUES ESTIMATED TO
BE IN THE 1000 TO 2000 J/KG RANGE FROM COLUMBUS MS SWD TO THE GULF
COAST. AS INSTABILITY AND LOW-LEVEL LAPSE RATES CONTINUE TO INCREASE
ALONG THIS CORRIDOR WHERE SFC DEWPOINTS ARE IN THE LOWER 70S F AND
DEEP-LAYER SHEAR IS GENERALLY LESS THAN 25 KTS...A FEW DAMAGING WET
DOWNBURSTS ASSOCIATED WITH MULTICELLS WILL BE POSSIBLE.

..BROYLES/CORFIDI.. 04/27/2016

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

ATTN...WFO...BMX...MOB...MEG...JAN...LIX...

LAT...LON   30418750 30108842 30028937 30938969 32678968 33708986
            34298971 34488863 33758791 31878732 30418750



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