ZCZC SPCSWOMCD ALL
ACUS11 KWNS 020201 
SPC MCD 020201 
SCZ000-FLZ000-GAZ000-020430-

MESOSCALE DISCUSSION 1617
NWS STORM PREDICTION CENTER NORMAN OK
0901 PM CDT THU SEP 01 2016

AREAS AFFECTED...NRN FL...SE GA...FAR SRN SC

CONCERNING...TORNADO WATCH 460...

VALID 020201Z - 020430Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 460 CONTINUES.

SUMMARY...TORNADO THREAT CONTINUES ACROSS TORNADO WATCH 460. THE
TORNADO THREAT IS EXPECTED TO PERSIST OVERNIGHT AND ANOTHER WATCH
WILL BE NEEDED TO COVER THE THREAT.

DISCUSSION...HURRICANE HERMINE IS CURRENTLY CENTERED ABOUT 50 MI SE
OF AAF AND CONTINUES TO MOVE NEWD TOWARDS THE FL BIG BEND. TBW VAD
HAS SHOWN A GRADUAL VERTICAL EXPANSION OF THE STRONGEST WINDS...WITH
WINDS OF 50 KT NOW REACHING NEAR 4 KM. TLH VAD-DERIVED HODOGRAPH HAS
ALSO SHOWN A GRADUAL EXPANSION OVER THE PAST HOUR AS 1-2 KM WIND
SPEEDS INCREASE. VERTICAL SHEAR REMAINS FAVORABLE AND SEVERAL STORMS
EMBEDDED WITHIN THE RAIN BAND ARCHING FROM TLH TO CTY TO ABOUT 45 MI
W OF PIE HAVE SHOWN TRANSIENT LOW-LEVEL ROTATION. STORMS CURRENTLY
MOVING THROUGH LAFAYETTE AND DIXIE COUNTIES HAVE A MORE NNWLY STORM
MOTION...RESULTING IN INCREASED SRH AND STREAMWISE VORTICITY /BASED
ON THE TLH VAD/...WHICH MAY ACCOUNT FOR THE RECENT INCREASE IN
ROTATION RECENTLY OBSERVED WITH THESE STORMS.

WIND FIELDS ARE EXPECTED TO REMAIN FAVORABLE FOR LOW-LEVEL ROTATION
AND THE POTENTIAL FOR A TORNADO OR TWO WILL PERSIST THROUGH THE
NIGHT. TORNADO WATCH 460 IS SCHEDULED TO EXPIRE AT 03Z AND ANOTHER
TORNADO WATCH WILL BE NEEDED TO ADDRESS THE CONTINUED THREAT. GIVEN
THE CURRENT FORECAST TRACK...THE HIGHEST TORNADO THREAT WILL LIKELY
COVER PORTIONS OF NRN FL...SE GA AND FAR SRN SC.

..MOSIER/EDWARDS.. 09/02/2016

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

ATTN...WFO...CHS...MLB...TBW...JAX...FFC...TAE...

LAT...LON   29628413 31308325 32338235 32748097 31867980 28848167
            28798388 29628413 

NNNN