Nov 29, 2021 2000 UTC Day 1 Convective Outlook
Updated: Mon Nov 29 19:46:08 UTC 2021 (20211129 2000Z Day 1 shapefile | 20211129 2000Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20211129 2000 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
20211129 2000 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
20211129 2000 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
20211129 2000 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 291946

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0146 PM CST Mon Nov 29 2021

   Valid 292000Z - 301200Z

   ...NO THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Thunderstorms are not expected through early Tuesday.

   ...20z Update...

   No changes are needed with the 20z update as thunderstorms are not
   expected the remainder of today/tonight.

   ..Leitman.. 11/29/2021

   .PREV DISCUSSION... /ISSUED 1002 AM CST Mon Nov 29 2021/

   ...Synopsis...
   Northwesterly mid-level flow will prevail across much of the central
   and eastern US through the forecast period in the wake of a
   departing upper trough. Across the Southwest, mid-level ridging will
   shift westward as a weak upper low develops off the Baja coast.
   Several shortwave troughs embedded within the flow aloft will move
   across the northern Rockies and upper Midwest today, though scant
   boundary-layer moisture remains due to surface high pressure and
   several days offshore flow. As such, thunderstorms appear unlikely
   across the CONUS through early Tuesday.

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0100Z