Nov 9, 2021 0700 UTC Day 2 Convective Outlook
Updated: Tue Nov 9 06:26:04 UTC 2021 (20211109 0700Z Day 2 shapefile | 20211109 0700Z Day 2 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20211109 0700 UTC Day 2 Outlook Graphic
Day 2 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MARGINAL 62,356 8,652,751 Dallas, TX...Fort Worth, TX...Oklahoma City, OK...Arlington, TX...Plano, TX...
Probabilistic Tornado Graphic
20211109 0700 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
2 % 45,611 8,073,063 Dallas, TX...Fort Worth, TX...Oklahoma City, OK...Arlington, TX...Plano, TX...
Probabilistic Damaging Wind Graphic
20211109 0700 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
5 % 62,201 8,616,989 Dallas, TX...Fort Worth, TX...Oklahoma City, OK...Arlington, TX...Plano, TX...
Probabilistic Large Hail Graphic
20211109 0700 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
5 % 62,405 8,647,602 Dallas, TX...Fort Worth, TX...Oklahoma City, OK...Arlington, TX...Plano, TX...
   SPC AC 090626

   Day 2 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1226 AM CST Tue Nov 09 2021

   Valid 101200Z - 111200Z

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
   OF THE SOUTHERN PLAINS...

   ...SUMMARY...
   Isolated strong to severe thunderstorms are possible Wednesday
   afternoon and evening across portions of the southern Plains. Hail
   and locally damaging wind gusts will be the main hazards with these
   storms.

   ...Southern Plains...

   A mid/upper trough will be oriented over the High Plains Wednesday
   morning, and pivot eastward toward the mid-MO and lower MS Valleys
   by Thursday morning. At the surface, a weak low is forecast to
   develop over northwest TX and migrate east near the Red River
   vicinity while a cold front advances southeast across OK/TX during
   the afternoon and into the overnight hours. Increasing southerly low
   level flow will transport Gulf moisture northward, with upper 50s to
   low 60s dewpoints as far north as southeast KS. 

   Increasing, yet still modest, boundary-layer moisture beneath steep
   midlevel lapse rates will support weak destabilization (less than
   1000 /kg MLCAPE) by afternoon. As the upper trough ejects eastward,
   effective shear will increase to around 30-40 kt in conjunction with
   increasing ascent along the southeastward-advancing cold front.
   While weak instability and a lack of better quality boundary-layer
   moisture will limit overall severe potential, at least a few
   organized cells capable of hail and locally damaging gusts will be
   possible from late afternoon into the evening hours. Tornado
   potential appears low, again due to poor low-level instability, but
   favorably curved low-level hodographs are noted in forecast
   soundings. A brief tornado could occur near the surface low where
   low-level shear will be maximized and relatively greater low-level
   dew points will be present.

   ..Leitman.. 11/09/2021

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   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z