Nov 23, 2020 1730 UTC Day 2 Convective Outlook
Updated: Mon Nov 23 17:02:40 UTC 2020 (20201123 1730Z Day 2 shapefile | 20201123 1730Z Day 2 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20201123 1730 UTC Day 2 Outlook Graphic
Day 2 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SLIGHT 38,225 3,176,280 Oklahoma City, OK...Tulsa, OK...Norman, OK...Lawton, OK...Broken Arrow, OK...
MARGINAL 222,651 16,985,307 Dallas, TX...Memphis, TN...Fort Worth, TX...Arlington, TX...Wichita, KS...
Probabilistic Tornado Graphic
20201123 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
2 % 154,970 9,572,647 Oklahoma City, OK...Tulsa, OK...Shreveport, LA...Little Rock, AR...Springfield, MO...
Probabilistic Damaging Wind Graphic
20201123 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
15 % 38,167 3,175,278 Oklahoma City, OK...Tulsa, OK...Norman, OK...Lawton, OK...Broken Arrow, OK...
5 % 222,349 17,009,761 Dallas, TX...Memphis, TN...Fort Worth, TX...Arlington, TX...Wichita, KS...
Probabilistic Large Hail Graphic
20201123 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
15 % 22,440 1,774,749 Oklahoma City, OK...Norman, OK...Lawton, OK...Edmond, OK...Midwest City, OK...
5 % 84,258 9,321,133 Dallas, TX...Fort Worth, TX...Tulsa, OK...Arlington, TX...Wichita, KS...
   SPC AC 231702

   Day 2 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1102 AM CST Mon Nov 23 2020

   Valid 241200Z - 251200Z

   ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF
   OKLAHOMA...

   ...SUMMARY...
   Severe thunderstorms are possible late afternoon Tuesday into
   Tuesday night across portions of the southern/central Plains,
   Ozarks, Mid-South, and lower Mississippi Valley.  Large hail and
   severe gusts are the primary hazards.

   ...Synopsis...
   A potent mid-level shortwave trough --evident on water-vapor imagery
   Monday morning over the southern Sierra Nevada-- will move from the
   NM/AZ border on Tuesday morning, eastward to western MO by daybreak
   Wednesday.  An associated 90-kt 500 mb speed max will move through
   the base of the trough and move into northwest TX/southern OK
   Tuesday evening and into the Ozarks late.  At the surface, a low
   initially over the OK Panhandle will develop eastward into the lower
   MO Valley as a cold front sweeps southward through much of OK and
   northwest/north-central TX Tuesday night.  

   ...OK eastward into the Ozarks...
   Strong southerly low-level flow during the day will advect 50s F
   dewpoints northward into western/central OK as a warm front advances
   northward into north-central OK by early evening.  A dryline is
   forecast to sweep eastward across the TX Panhandle/South Plains
   during the afternoon.  As strong large-scale ascent associated with
   the disturbance overspreads the southern High Plains, isolated
   thunderstorms are forecast to develop in the TX Panhandle into
   western OK during the 3-6pm period.  As the storms move/develop into
   slightly richer low-level moisture near the OK border, the potential
   for large hail will probably increase as mid-level cooling aids in
   destabilization (-18 to -21 C at 500 mb).  Strengthening and veering
   winds with height will favor storm organization, including the
   possibility for a few low-topped supercells initially, before
   upscale growth into a cluster or band of storms evolves during the
   evening.  Large hail will probably accompany the stronger cores
   through early to mid evening before this threat lessens.  Isolated
   to widely scattered severe gusts (60-70 mph) are possible as this
   activity moves east during the evening across OK.  During the
   overnight, a lingering risk for isolated damaging winds may continue
   into the Ozarks and perhaps develop as far south as the Arklatex.  A
   separate area of thunderstorms is forecast to develop across
   north-central TX overnight along the front.  An isolated hail/wind
   risk may accompany these storms.

   ..Smith.. 11/23/2020

   CLICK TO GET WUUS02 PTSDY2 PRODUCT

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