354
ACUS03 KWNS 210730
SWODY3
SPC AC 210729
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0229 AM CDT THU MAY 21 2026
VALID 231200Z - 241200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED FROM THE
CENTRAL/SOUTHERN PLAINS INTO THE LOWER MISSISSIPPI VALLEY AND
SOUTHEASTERN US. A FEW STRONGER STORMS MAY BE POSSIBLE ACROSS THE
SOUTHERN PLAINS, PARTICULARLY NEAR THE TEXAS AND OKLAHOMA
PANHANDLES.
..SYNOPSIS
A WEAK IMPULSE WILL ROTATE ACROSS THE CENTRAL PLAINS ON D3/SATURDAY
AS A SURFACE LOW MOVES NORTHWARD ACROSS THE OHIO VALLEY. A TRAILING
COLD FRONT WILL EXTEND FROM THE SURFACE LOW BACK INTO THE SOUTHERN
PLAINS. WIDELY SCATTERED THUNDERSTORM ACTIVITY WILL BE POSSIBLE
FROM THE CENTRAL/SOUTHERN PLAINS INTO THE LOWER MISSISSIPPI VALLEY
AND ACROSS THE SOUTHEAST. A FEW STRONGER STORMS MAY BE POSSIBLE
ACROSS THE TEXAS/OKLAHOMA PANHANDLES.
..TX/OK PANHANDLES
WEAK FORCING FOR ASCENT AND EASTERLY UPSLOPE FLOW ACROSS THE CAPROCK
WILL PRODUCE SCATTERED THUNDERSTORM ACTIVITY SATURDAY AFTERNOON.
FORECAST SOUNDINGS SUGGEST A PLUME OF STEEP TO LOW MID-LEVEL LAPSE
RATES WILL STILL RESIDE ACROSS THE OK/TX PANHANDLES WITH MID 50S TO
60S DEW POINTS AND MODERATE INSTABILITY BY THE AFTERNOON. SHEAR
PROFILES WILL BE FAIRLY WEAK, WITH DEEP LAYER SHEAR AROUND 25 KTS. A
FEW STRONGER STORMS MAY PRODUCE GUSTY WINDS AND HAIL. OVERALL, WEAK
DEEP LAYER SHEAR FOR ORGANIZATION MAY LIMIT THE SEVERE THREAT.
..THORNTON.. 05/21/2026
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