BBS: TELESC.NET.BR Assunto: DAY48SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Tue, 28 Apr 2026 08:58:22 +0000 ----------------------------------------------------------- ACUS48 KWNS 280858 SWOD48 SPC AC 280856 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0356 AM CDT Tue Apr 28 2026 Valid 011200Z - 061200Z ...DISCUSSION... Medium-range guidance indicates that the evolving split flow may maintain a broadly confluent mid-level regime across and east of the Rockies through this period. While a broad area of lower mid-level heights remains centered across the Ontario/Quebec and Upper Midwest through Northeast, it appears that a more prominent blocking ridge/high may evolve upstream near the British Columbia/Pacific Northwest coast by late this coming weekend into early next week. A developing low to its southeast may slowly progress inland across California into the Southwest, with downstream mid-level ridging building across the Rockies. There is considerable model spread concerning embedded short wave developments, but it appears that potential for stronger convection will remain generally low for the time of year and confined to parts of the southern tier of the U.S., perhaps including parts of the San Joaquin Valley, as well as along a lingering frontal zone near or just south of the Gulf into southern Atlantic coastal plain. Due to a combination of low predictability and low severe weather potential, severe weather probabilities are being maintained at less than 15 percent through this period. ..Kerr.. 04/28/2026 = = = To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.28-Linux * Origin: Capitol City Online (1:2320/107) ----------------------------------------------------------- [Voltar]