Mar 31, 2020 0600 UTC Day 1 Convective Outlook
Updated: Tue Mar 31 05:24:59 UTC 2020 (20200331 1200Z Day 1 shapefile | 20200331 1200Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20200331 1200 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SLIGHT 66,962 4,630,939 Montgomery, AL...Columbus, GA...Tallahassee, FL...Savannah, GA...Macon, GA...
MARGINAL 73,103 8,553,743 Birmingham, AL...Mobile, AL...Charleston, SC...North Charleston, SC...Tuscaloosa, AL...
Probabilistic Tornado Graphic
20200331 1200 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 % 57,007 4,095,164 Montgomery, AL...Columbus, GA...Tallahassee, FL...Savannah, GA...Macon, GA...
2 % 55,577 5,155,152 Jacksonville, FL...Mobile, AL...Charleston, SC...North Charleston, SC...Gulfport, MS...
Probabilistic Damaging Wind Graphic
20200331 1200 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
15 % 66,508 4,649,022 Montgomery, AL...Columbus, GA...Tallahassee, FL...Savannah, GA...Macon, GA...
5 % 73,851 8,594,993 Birmingham, AL...Mobile, AL...Jackson, MS...Charleston, SC...North Charleston, SC...
Probabilistic Large Hail Graphic
20200331 1200 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
15 % 41,853 2,588,509 Montgomery, AL...Columbus, GA...Albany, GA...Dothan, AL...Warner Robins, GA...
5 % 71,556 6,537,643 Jacksonville, FL...Mobile, AL...Tallahassee, FL...Savannah, GA...Macon, GA...
   SPC AC 310524

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1224 AM CDT Tue Mar 31 2020

   Valid 311200Z - 011200Z

   ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
   THE SOUTHEAST...

   ...SUMMARY...
   Isolated to scattered severe thunderstorms are possible over parts
   of southern/central Alabama and Georgia, as well as southern coastal
   South Carolina. Strong to damaging winds, large hail, and a few
   tornadoes may occur.

   ...Discussion...

   Mid-level height field will be suppressed across the Gulf States
   today ahead of a strong short-wave trough that will progress from
   the lower MS Valley at the start of the period to off the Atlantic
   Coast Tuesday evening. Weak surface low will reflect the influence
   of this feature as it tracks across central AL into GA by 18z.
   Latest data continues to suggest 60s surface dew points will
   overspread the warm sector as a warm front advances north to roughly
   the latitude of the progressive surface low.

   Scattered thunderstorms will likely be ongoing at the start of the
   period along the cold front and this activity should remain
   organized through late afternoon as it migrates east ahead of the
   short wave. Majority of the convection may reside along the cool
   side of the boundary, but increasing boundary-layer moisture should
   result in modest surface-based buoyancy, more than adequate for
   robust updrafts. Forecast soundings favor supercells as strong
   deep-layer flow will be present. While some tornado threat will be
   noted early across portions of MS, boundary-layer heating should
   prove beneficial for stronger updrafts/supercells downstream across
   AL/GA. All severe hazards are possible with this activity, and the
   primary corridor of storms should be heavily influenced by height
   falls ahead of the short wave, essentially from extreme northern FL
   to the east/west oriented warm front.

   ..Darrow/Squitieri.. 03/31/2020

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