Oct 26, 2020 0730 UTC Day 3 Severe Thunderstorm Outlook
Updated: Mon Oct 26 07:15:45 UTC 2020 (20201026 0730Z Day 3 shapefile | 20201026 0730Z Day 3 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20201026 0730 UTC Day 3 Outlook Graphic
Day 3 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MARGINAL 49,748 4,282,186 New Orleans, LA...Montgomery, AL...Mobile, AL...Metairie, LA...Gulfport, MS...
Probabilistic Graphic
20201026 0730 UTC Day Probabilitic Graphic
Probability of severe weather within 25 miles of a point.
Hatched Area: 10% or greater probability of significant severe within 25 miles of a point.
Day 3 Prob. Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
5 % 49,758 4,274,887 New Orleans, LA...Montgomery, AL...Mobile, AL...Metairie, LA...Gulfport, MS...
   SPC AC 260715

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0215 AM CDT Mon Oct 26 2020

   Valid 281200Z - 291200Z

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF
   THE CENTRAL GULF COAST STATES...

   ...SUMMARY...
   A risk for thunderstorms potentially capable of damaging gusts
   and/or a tornado is most probable over parts of the central Gulf
   Coast states on Wednesday and Wednesday night in association with
   Zeta.

   ...Synopsis...
   A mid-level low will move eastward from eastern NM into OK while
   tropical cyclone Zeta makes landfall on the central Gulf Coast. 
   Zeta will move north, then northeast and merge with the baroclinic
   regime over the lower MS Valley.  Refer to the National Hurricane
   Center forecasts for the latest track updates.  

   The potential for severe is focused on the inland penetration of a
   tropical airmass into the coastal plain of the central Gulf Coast
   states.  At this point, the severe forecast is subject to
   potentially large spatial adjustments based on large uncertainty in
   the eventual track of tropical cyclone Zeta.  Zeta is forecast to
   move ashore and subsequently accelerate northeast across parts of
   the South late Wednesday night.  However, it seems plausible at this
   point for highlighting the central Gulf Coast with potential
   tornado/damaging-gust hazards.  Hodographs will enlarge during the
   day and sufficient buoyancy will likely develop near the coast and
   gradually spread inland into interior AL overnight.  

   Elsewhere, isolated elevated thunderstorms are possible farther west
   over the southern Great Plains and farther north in the OH Valley
   late.

   ..Smith.. 10/26/2020

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   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0730Z