Mesoscale Discussion 1695
   NWS Storm Prediction Center Norman OK
   0414 AM CDT Wed Sep 16 2020

   Areas affected...Florida Panhandle...Far Southern Alabama

   Concerning...Tornado Watch 490...

   Valid 160914Z - 161115Z

   The severe weather threat for Tornado Watch 490 continues.

   SUMMARY...A tornado threat will continue through daybreak from far
   southern Alabama eastward across the Florida Panhandle into far
   southwest Georgia. A new tornado watch will need to be issued before
   the 11Z expiration of WW 0489.

   DISCUSSION...Hurricane Sally's center is currently about 10 miles to
   the south of Gulf Shores, Alabama. The hurricane will continue to
   move slowly northward with an expected landfall around 10Z. Bands of
   heavy rainfall are present to the north and east of the center
   extending eastward about 150 statute miles. The most notable band is
   located in Santa Rosa County, Florida extending south-southeastward
   into the northeast Gulf of Mexico. Multiple semi-discrete
   thunderstorms are ongoing within this band. Other discrete cells are
   ongoing over land to the southwest of Tallahassee. Some of the
   storms are supercells. The latest WSR-88D VWP at Eglin Air Force
   Base shows veering of winds with height in the lowest 3 km above
   ground level. This is supporting storm-relative helicity in the 350
   to 400 m2/s2 range, which will be favorable for tornadoes associated
   with the stronger rotating storms. The tornado threat will be
   maintained along the coast through mid morning with some slight
   inland shift possible. For this reason, a new tornado watch will
   need to be issued by the 11Z expiration of tornado watch 0489.

   ..Broyles/Edwards.. 09/16/2020

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...TAE...MOB...

   LAT...LON   30078442 30498439 30998466 31258523 31278698 31228756
               30858786 30568784 30378778 30168755 30298677 30248617
               30038576 29638539 29508493 29798447 30078442