327
ACUS01 KWNS 201946
SWODY1
SPC AC 201944
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0144 PM CST TUE JAN 20 2026
VALID 202000Z - 211200Z
..NO THUNDERSTORM AREAS FORECAST
..SUMMARY
THUNDERSTORMS ARE NOT FORECAST ACROSS THE U.S. TODAY OR TONIGHT.
..20Z UPDATE
NO CHANGES ARE NEEDED TO THE ONGOING FORECAST.
..WENDT.. 01/20/2026
PREV DISCUSSION
/ISSUED 0953 AM CST TUE JAN 20 2026/
..DISCUSSION
A PROMINENT LONGWAVE TROUGH WILL REMAIN ENTRENCHED FROM THE ROCKIES
TO THE WESTERN ATLANTIC, WITH A GENERAL PREVALENCE OF COLD/DRY
CONTINENTAL TRAJECTORIES AND SURFACE HIGH PRESSURE OVER THE EASTERN
THIRD OF THE CONUS. AIRMASS MODIFICATION WILL OCCUR WITH A MODEST
INCREASE IN LOW-LEVEL MOISTURE TOWARD COASTAL TEXAS TONIGHT.
HOWEVER, INSTABILITY IS EXPECTED TO REMAIN TOO LIMITED TO SUPPORT
THUNDERSTORMS THROUGH TONIGHT.
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