Sep 16, 2020 1630 UTC Day 1 Convective Outlook
Updated: Wed Sep 16 16:06:57 UTC 2020 (20200916 1630Z Day 1 shapefile | 20200916 1630Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20200916 1630 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SLIGHT 33,356 1,929,417 Tallahassee, FL...Albany, GA...Dothan, AL...Valdosta, GA...Panama City, FL...
MARGINAL 30,294 3,362,680 Jacksonville, FL...Columbus, GA...Gainesville, FL...Macon, GA...Warner Robins, GA...
Probabilistic Tornado Graphic
20200916 1630 UTC Day 1 Tornado Probabilities Graphic
Probability of a tornado within 25 miles of a point.
Hatched Area: 10% or greater probability of EF2 - EF5 tornadoes within 25 miles of a point.
Day 1 Tornado Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
5 % 33,141 1,926,266 Tallahassee, FL...Albany, GA...Dothan, AL...Valdosta, GA...Panama City, FL...
2 % 30,765 3,399,018 Jacksonville, FL...Columbus, GA...Gainesville, FL...Macon, GA...Warner Robins, GA...
Probabilistic Damaging Wind Graphic
20200916 1630 UTC Day 1 Damaging Wind Probabilities Graphic
Probability of damaging thunderstorm winds or wind gusts of 50 knots or higher within 25 miles of a point.
Hatched Area: 10% of greater probability of wind gusts 65 knots or greater within 25 miles of a point.
Day 1 Wind Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
5 % 63,950 5,309,380 Jacksonville, FL...Columbus, GA...Tallahassee, FL...Gainesville, FL...Macon, GA...
Probabilistic Large Hail Graphic
20200916 1630 UTC Day 1 Large Hail Probabilities Graphic
Probability of hail 1" or larger within 25 miles of a point.
Hatched Area: 10% or greater probability of hail 2" or larger within 25 miles of a point.
Day 1 Hail Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
   SPC AC 161606

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1106 AM CDT Wed Sep 16 2020

   Valid 161630Z - 171200Z

   ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE
   FLORIDA PANHANDLE...NORTHWESTERN FLORIDA...SOUTHEASTERN
   ALABAMA...AND SOUTHERN GEORGIA...

   ...SUMMARY...
   A few tornadoes are possible through tonight across portions of the
   Florida Panhandle, northwestern Florida, southeastern Alabama, and
   southern Georgia.

   ...FL/GA/AL...
   Hurricane Sally is moving slowly northeastward over the western tip
   of the FL Panhandle.  Local VAD profiles and model guidance show
   significant low-level shear and storm-relative helicity are present
   in vicinity of the north-south oriented outer bands that are
   affecting the central Panhandle.  These bands of convection, along
   with the development of other activity will spread into portions of
   southwest GA this afternoon.  Given the vertical shear profiles,
   rotating storms and supercell structures are expected. The highest
   theta-e air mass (mid-upper 70s dewpoints) is restricted to the FL
   panhandle, and model guidance does not provide high confidence that
   this air will move very far inland into southern GA.  Considered
   adding higher tornado probabilities and an ENH risk for a small area
   of the eastern FL Panhandle and southwest GA, but will maintain SLGT
   given the latest HREF/HRRR solutions.  The threat will shift
   eastward overnight into south-central GA and north FL.

   Please refer to mesoscale discussion #1696 for further short-term
   details.

   ..Hart/Lyons.. 09/16/2020

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   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z