Severe Storm Outlook Narrative (AC)
Issued by NWS

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000
ACUS11 KWNS 282217
SWOMCD
SPC MCD 282217
ALZ000-282345-

MESOSCALE DISCUSSION 1830
NWS STORM PREDICTION CENTER NORMAN OK
0417 PM CST MON NOV 28 2016

AREAS AFFECTED...PORTIONS OF WESTERN AND CENTRAL ALABAMA

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 282217Z - 282345Z

PROBABILITY OF WATCH ISSUANCE...60 PERCENT

SUMMARY...THE AREA IS BEING MONITORED FOR THE POTENTIAL FOR DAMAGING
WIND GUSTS TO ACCOMPANY A SQUALL LINE MOVING ACROSS THE AREA THIS
EVENING INTO THE OVERNIGHT HOURS. THIS MAY NECESSITATE SEVERE
THUNDERSTORM WATCH ISSUANCE.

DISCUSSION...A STRONGLY FORCED...NARROW SQUALL LINE -- EXTENDING FROM
PARTS OF WESTERN TN TO CENTRAL MS -- IS SPREADING EASTWARD TOWARD
WESTERN AL. THE AIR MASS AHEAD OF THIS LINE FEATURES VERY LITTLE
INSTABILITY...THOUGH POLEWARD FLUXES OF SLIGHTLY RICHER LOW-LEVEL
MOISTURE THROUGH THE EVENING COULD CONTRIBUTE TO WEAK
DESTABILIZATION. MOST NOTABLY...WITH THE BMX VAD WIND PROFILE
INDICATING AROUND 50 KT OF FLOW IN THE 1-2-KM LAYER...MOMENTUM
TRANSPORT ASSOCIATED WITH DOWNDRAFTS MAY BE SUFFICIENT TO SUPPORT
DAMAGING WIND GUSTS THROUGH THE EVENING. VERY WEAK INSTABILITY MAY
BE A LIMITING FACTOR FOR A MORE WIDESPREAD SEVERE-WIND EVENT OR
TORNADO THREAT...THOUGH TRENDS WILL CONTINUE TO BE MONITORED.

..COHEN/HART.. 11/28/2016

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

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

LAT...LON   33288828 34318794 34448692 33958666 32368693 31918771
            32148824 33288828




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