ZCZC SPCSWOMCD ALL
ACUS11 KWNS 301522 
SPC MCD 301522 
LAZ000-TXZ000-301615-

MESOSCALE DISCUSSION 0513
NWS STORM PREDICTION CENTER NORMAN OK
1022 AM CDT SAT APR 30 2016

AREAS AFFECTED...SRN LA

CONCERNING...SEVERE THUNDERSTORM WATCH 129...130...

VALID 301522Z - 301615Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
129...130...CONTINUES.

SUMMARY...THREAT FOR A FEW INSTANCES OF STRONG TO DAMAGING WIND
GUSTS...HAIL AND A TORNADO OR TWO WILL PERSIST INTO EARLY AFTERNOON
OVER SCNTRL AND SERN LA. SEVERE THUNDERSTORM WATCHES 129 AND 130 ARE
SCHEDULED TO EXPIRE AT 16Z. SEVERE THUNDERSTORM WATCH 129 COULD BE
LOCALLY EXTENDED IF NECESSARY FOR A PORTION OF SCNTRL LA. ANOTHER WW
DOWNSTREAM OVER SERN LA MIGHT BE NEEDED LATER THIS MORNING OR
AFTERNOON...BUT WILL ULTIMATELY DEPEND ON CONVECTIVE TRENDS.

DISCUSSION...LINE OF STRONG TO OCCASIONALLY SEVERE STORMS PERSISTS
ACROSS SCNTRL LA AND IS MOVING ONLY SLOWLY EWD AT 20 KT. A FEW
BOWING SEGMENTS AND MESO-VORTICES CONTINUE TO BE OBSERVED WITHIN THE
LINE. ACTIVITY IS EMBEDDED WITHIN A MODERATELY UNSTABLE ENVIRONMENT
WITH MLCAPE AROUND 1500 J/KG AND FURTHER DESTABILIZATION OF THE
BOUNDARY LAYER WILL OCCUR OVER SERN LA TODAY. TENDENCY WILL BE FOR
LOW-LEVEL WINDS AND 0-1 KM HODOGRAPH SIZE TO SLOWLY DECREASE DURING
THE DAY...BUT VERTICAL SHEAR THROUGH A DEEPER LAYER WILL REMAIN
SUFFICIENT FOR ORGANIZED STORM STRUCTURES.

..DIAL/THOMPSON.. 04/30/2016

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

ATTN...WFO...LIX...LCH...

LAT...LON   29499126 29629188 29609306 29509364 29399429 29789397
            30479312 30909137 30809064 30139014 29259068 29499126 

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