Nov 16, 2021 1730 UTC Day 2 Convective Outlook
Updated: Tue Nov 16 17:29:40 UTC 2021 (20211116 1730Z Day 2 shapefile | 20211116 1730Z Day 2 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20211116 1730 UTC Day 2 Outlook Graphic
Day 2 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Tornado Graphic
20211116 1730 UTC Day 2 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 2 Tornado Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Damaging Wind Graphic
20211116 1730 UTC Day 2 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 2 Wind Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Large Hail Graphic
20211116 1730 UTC Day 2 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 2 Hail Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
   SPC AC 161729

   Day 2 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1129 AM CST Tue Nov 16 2021

   Valid 171200Z - 181200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Severe thunderstorms appear unlikely across the contiguous United
   States on Wednesday.

   ...Discussion...
   As an upper low moves eastward across southern portions of the
   Canadian Prairie into Ontario, broader cyclonic flow/troughing south
   of this feature will shift across the central third of the U.S.
   through the period.

   As this feature advances, so will an associated surface cold front
   -- initially forecast to extend from the Upper Great Lakes (at the
   triple point of a southern Manitoba occluded low) southwestward to
   the southern Plains.

   As this front progresses eastward into the evening, modest low-level
   theta-e advection across the lower Mississippi Valley and vicinity
   may provide sufficient -- mainly elevated -- instability to support
   development of a few thunderstorms, within a broader area of frontal
   shower activity.  Weak instability however should preclude any
   severe risk.

   A few thunderstorms may also spread northward into southern Florida
   overnight, but again -- severe storms are not expected.

   ..Goss.. 11/16/2021

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   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0700Z