Jan 20, 2025 1630 UTC Day 1 Convective Outlook
Updated: Mon Jan 20 16:28:57 UTC 2025 (20250120 1630Z Day 1 shapefile | 20250120 1630Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20250120 1630 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Tornado Graphic
20250120 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
No Risk Areas Forecast
Probabilistic Damaging Wind Graphic
20250120 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
No Risk Areas Forecast
Probabilistic Large Hail Graphic
20250120 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 201628

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1028 AM CST Mon Jan 20 2025

   Valid 201630Z - 211200Z

   ...NO THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   No thunderstorms are expected across the U.S. through tonight.

   ...Synopsis...
   Another surge of cold air is anticipated across the CONUS,
   reinforcing the polar airmass already in place. This will result in
   a maintenance of dry and stable conditions, with no thunderstorms
   anticipated. 

   Some deeper convection is possible late tonight/early tomorrow along
   the middle/upper TX Coast as warm-air advection strengthens
   throughout the warm sector of surface low developing over the
   western Gulf of Mexico. Model forecast soundings have thermodynamic
   profiles with scant (and shallow) buoyancy between around 800 to 500
   mb. These profiles also suggest sleet will be the predominant
   precipitation type, with mixed-phase parcels combining with the
   modest buoyancy to support a few lightning flashes. Even so, the
   overall thunderstorm probabilities are still expected to be less
   than 10 percent.

   ..Mosier.. 01/20/2025

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