ZCZC SPCSWOMCD ALL
ACUS11 KWNS 290100 
SPC MCD 290100 
ALZ000-290230-

MESOSCALE DISCUSSION 1835
NWS STORM PREDICTION CENTER NORMAN OK
0700 PM CST MON NOV 28 2016

AREAS AFFECTED...PORTIONS OF NORTH AND CENTRAL AL

CONCERNING...SEVERE THUNDERSTORM WATCH 503

VALID 290100Z - 290230Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 503
CONTINUES.

SUMMARY...THE SEVERE RISK CONTINUES ACROSS SEVERE THUNDERSTORM WATCH
503.

DISCUSSION...A NARROW SQUALL LINE WITH OCCASIONAL LINE BREAKS AT ITS
SOUTHERN END CONTINUES TO TRACK EASTWARD ACROSS PORTIONS OF NORTH
AND CENTRAL AL. THIS ACTIVITY WILL CONTINUE TO ADVANCE EASTWARD INTO
INCREASINGLY DRY/STABLE AIR...AND MAY WEAKEN DURING THE NEXT FEW
HOURS. REGARDLESS...WITH AROUND 55 KT OF FLOW INDICATED BY THE BMX
VAD WIND PROFILE...LOCALIZED DAMAGING WINDS COULD BE ENCOURAGED BY
VERTICAL MOMENTUM TRANSPORT IN THE SQUALL LINE. AN OCCASIONAL
SUPERCELL STRUCTURE HAS BEEN INDICATED OVER THE SOUTHERN END OF THIS
ACTIVITY EAST OF MERIDIAN MS. THIS ACTIVITY MAY POSE THE GREATEST
SEVERE RISK (INCLUDING THE RISK FOR A TORNADO) DURING THE NEXT
COUPLE OF HOURS AS IT SPREADS ACROSS PORTIONS OF WEST-CENTRAL AL.
THE SEVERE RISK SHOULD DECREASE TO NIL IN THE WAKE OF THE SQUALL
LINE.

EAST OF WATCH 503...THE BOUNDARY LAYER IS EXPECTED TO BE TOO STABLE
TO SUPPORT ANY MORE THAN AN ISOLATED DAMAGING WIND GUST...THUS
ADDITIONAL WATCH ISSUANCE IS NOT ANTICIPATED.

..COHEN.. 11/29/2016

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

ATTN...WFO...BMX...HUN...

LAT...LON   32478821 33498734 34678654 34808611 34468567 33248623
            32418716 32478821 

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