ZCZC SPCSWOD48 ALL
   ACUS48 KWNS 200823
   SPC AC 200823

   Day 4-8 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0323 AM CDT Sun Sep 20 2026

   Valid 231200Z - 281200Z

   ...DISCUSSION...
   Upper ridging will persist over the central U.S. through the
   forecast period, with a meandering upper trough evolving into a
   cut-off upper low off of the Mid-Atlantic Coast and an upper trough
   amplifying over the Interior West late this week into next weekend.
   Through the week, a relatively dry low-level airmass will settle
   east of the MS River and west of the Rockies, limiting the severe
   threat over the western and eastern third of the U.S. Some modest
   moisture return is likely across the Plains given lee troughing.
   However, upper support will be weak, which should limit the severe
   threat across the central U.S. as well. As such, no organized severe
   threats seem apparent for the CONUS Days 4-8 (Wednesday-Sunday).

   ..Squitieri.. 09/20/2026

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