Apr 23, 2025 1630 UTC Day 1 Convective Outlook
Updated: Wed Apr 23 16:28:54 UTC 2025 (20250423 1630Z Day 1 shapefile | 20250423 1630Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20250423 1630 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SLIGHT 123,014 2,145,268 Lubbock, TX...Amarillo, TX...Topeka, KS...Midland, TX...Odessa, TX...
MARGINAL 317,323 26,312,897 Detroit, MI...Milwaukee, WI...Kansas City, MO...Omaha, NE...Colorado Springs, CO...
Probabilistic Tornado Graphic
20250423 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
5 % 12,052 83,601 Garden City, KS...
2 % 39,445 280,339 Dodge City, KS...Liberal, KS...Hays, KS...Pampa, TX...Borger, TX...
Probabilistic Damaging Wind Graphic
20250423 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
15 % 122,204 2,076,033 Lubbock, TX...Amarillo, TX...Topeka, KS...Midland, TX...Odessa, TX...
5 % 257,414 14,521,048 Kansas City, MO...Omaha, NE...Colorado Springs, CO...Wichita, KS...Lincoln, NE...
Probabilistic Large Hail Graphic
20250423 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
15 % 122,665 2,134,930 Lubbock, TX...Amarillo, TX...Topeka, KS...Midland, TX...Odessa, TX...
5 % 319,650 26,547,256 Detroit, MI...Milwaukee, WI...Kansas City, MO...Omaha, NE...Colorado Springs, CO...
   SPC AC 231628

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1128 AM CDT Wed Apr 23 2025

   Valid 231630Z - 241200Z

   ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
   THE SOUTHERN/CENTRAL PLAINS...

   ...SUMMARY...
   Scattered strong to severe thunderstorms are forecast over parts of
   the southern/central Plains today and tonight, with large hail and
   damaging winds possible.

   ...Central and Southern High Plains...
   Modest zonal flow pattern persists across the Plains states today,
   with only weak large scale forcing anticipated.  However, strong
   heating across the High Plains, coupled with circulations along a
   diffuse dryline and forcing associated with the nocturnal low-level
   jet will aid in the development of scattered thunderstorms from
   western KS into the TX Panhandle this afternoon and evening.

   The area of greatest concentration of storms will likely be over
   western KS, where model guidance shows greatest confidence in a
   strengthening low-level jet and some upper support.  Storms should
   develop by late afternoon, with forecast soundings showing
   sufficient deep-layer shear for supercell structures.  Large hail
   will be the main concern.  Low-level moisture will be marginal, but
   enlarging hodographs by early evening could also support a risk of a
   few tornadoes.

   Farther south, thunderstorm coverage will be more widely scattered
   across the TX Panhandle into the Big Bend region.  Nevertheless,
   steep mid-level lapse rates and sufficient westerly flow aloft will
   pose a risk of a few supercells capable of large hail and damaging
   winds through the evening.

   ...Northeast KS...
   A small cluster of strong storms has developed this morning over
   central KS.  Several morning CAM solutions suggest an increasing
   risk of thunderstorm development/intensification by mid-afternoon
   over northeast KS - in vicinity of a weak surface boundary.  While
   this scenario is unclear, a few of these storms could pose a risk of
   large hail and gusty/damaging winds.

   ...Southeast States...
   Strong daytime heating will aid in destabilization across much of
   GA/SC this afternoon, with scattered thunderstorm development
   expected.  Winds aloft are weak and storms should be relatively
   disorganized.  However, cool temperatures aloft will aid in a few
   robust updrafts - posing some risk of hail and gusty winds.

   ..Hart/Thornton.. 04/23/2025

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