Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
726 ACUS48 KWNS 220836 SWOD48 SPC AC 220835 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0335 AM CDT Sun Sep 22 2024 Valid 251200Z - 301200Z ...DISCUSSION... Large spread among guidance is apparent during the Day 4-8 period. Most guidance develops an upper cyclone over the central or eastern U.S. for much of the period, while an upper ridge persists over the western states. However, the GFS suite of guidance is much more progressive with the central/eastern upper trough/low compared to the ECMWF, and eventually develops a broad upper ridge over much of the CONUS late in the period. Given vastly different forecast solutions, confidence in any severe potential developing during the forecast period is low. ..Leitman.. 09/22/2024