Apr 1, 2021 0100 UTC Day 1 Convective Outlook
Updated: Thu Apr 1 00:22:56 UTC 2021 (20210401 0100Z Day 1 shapefile | 20210401 0100Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20210401 0100 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MARGINAL 42,847 3,969,507 Tallahassee, FL...Savannah, GA...Charleston, SC...Wilmington, NC...North Charleston, SC...
Probabilistic Tornado Graphic
20210401 0100 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
2 % 17,899 1,842,071 Wilmington, NC...North Charleston, SC...Jacksonville, NC...Goose Creek, SC...Myrtle Beach, SC...
Probabilistic Damaging Wind Graphic
20210401 0100 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 % 41,902 3,875,263 Tallahassee, FL...Savannah, GA...Charleston, SC...Wilmington, NC...North Charleston, SC...
Probabilistic Large Hail Graphic
20210401 0100 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
5 % 13,284 1,817,408 Charleston, SC...Wilmington, NC...North Charleston, SC...Jacksonville, NC...Mount Pleasant, SC...
   SPC AC 010022

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0722 PM CDT Wed Mar 31 2021

   Valid 010100Z - 011200Z

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE FL
   PANHANDLE TO COASTAL SOUTH/NORTH CAROLINA...

   ...SUMMARY...
   Severe threat is waning across the Southeast this evening.

   ...Southeast...

   Elongated MCS that stretches from the FL Panhandle across southern
   GA is gradually weakening as it propagates slowly southeast this
   evening. Convective outflow is spreading several miles ahead of the
   precipitation shield and lightning is lessening within warming cloud
   tops. Farther northeast, numerous showers/thunderstorms extend
   across coastal SC/NC and the air mass will quickly overturn over the
   next hour or so as this activity propagates offshore.

   Severe threat is diminishing across this region and will be
   negligible within a few hours.

   ..Darrow.. 04/01/2021

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   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z