Dec 14, 2020 0100 UTC Day 1 Convective Outlook
Updated: Mon Dec 14 00:56:19 UTC 2020 (20201214 0100Z Day 1 shapefile | 20201214 0100Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20201214 0100 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MARGINAL 52,871 5,480,501 New Orleans, LA...Birmingham, AL...Baton Rouge, LA...Metairie, LA...Lafayette, LA...
Probabilistic Tornado Graphic
20201214 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 % 53,027 5,531,927 New Orleans, LA...Birmingham, AL...Baton Rouge, LA...Jackson, MS...Metairie, LA...
Probabilistic Damaging Wind Graphic
20201214 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 % 52,891 5,522,621 New Orleans, LA...Birmingham, AL...Baton Rouge, LA...Jackson, MS...Metairie, LA...
Probabilistic Large Hail Graphic
20201214 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
No Risk Areas Forecast
   SPC AC 140056

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0656 PM CST Sun Dec 13 2020

   Valid 140100Z - 141200Z

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS SOUTHERN
   LOUISIANA AND MISSISSIPPI INTO CENTRAL ALABAMA...

   ...SUMMARY...
   A few damaging wind gusts or a brief tornado remain possible across
   parts of southern Louisiana into southern Mississippi this evening
   and central Alabama overnight.

   ...Southern LA into southwest MS and central AL...
   The Marginal Risk has been expanded northeastward into central
   Alabama, along the forecast surface low track. Although instability
   is currently weak into central MS and AL, warm advection and very
   strong shear profiles will allow for dewpoints to 63-65 F later
   tonight. When combined with the lift with the shortwave trough, the
   result is a conditional threat of a few damaging wind gusts, or
   brief tornado.

   ..Jewell.. 12/14/2020

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