Nov 23, 2021 1630 UTC Day 1 Convective Outlook
Updated: Tue Nov 23 16:30:46 UTC 2021 (20211123 1630Z Day 1 shapefile | 20211123 1630Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20211123 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
20211123 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
20211123 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
20211123 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 231630

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1030 AM CST Tue Nov 23 2021

   Valid 231630Z - 241200Z

   ...NO THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Severe thunderstorms are not expected today or tonight.

   ...Synopsis/Discussion...
   A progressive but amplified large-scale pattern will continue,
   highlighted by an amplifying upper trough over the Great
   Basin/Rockies and an eastward-building upper ridge over the Midwest
   and Great Lakes. The general prevalence of dry/stable conditions
   will likely preclude thunderstorms across the CONUS. One potential
   exception for a couple of lightning flashes might be tonight across
   southern/eastern Arizona and the Four Corners area, although
   thermodynamic profiles will be quite marginal and thunderstorm
   probabilities are expected to remain very low (below 10 percent).

   ..Guyer.. 11/23/2021

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

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