Tag: (apr

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0315 AM CDT Wed Apr 23 2025 Valid 261200Z - 011200Z ...DISCUSSION... ...Days 5-7/Sun-Tue -- Great Plains to the Midwest... Forecast guidance is in good agreement that a deepening upper trough over the western states will eject eastward across the Plains and Midwest early next week. Beginning Day 5/Sun, the upper trough will extend from the central Rockies to the Southwest, with a belt of strong southeasterly flow emerging over the central/southern High Plains Sunday night. Surface lee low development is forecast over the northern/central Plains Sunday

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0312 AM CDT Tue Apr 22 2025 Valid 251200Z - 301200Z ...DISCUSSION... ...Days 4-5/Fri-Sat -- Central/Southern Plains... An upper ridge will build over the Plains toward the MS Valley this weekend as a deepening upper trough develops over the western U.S. Some lead shortwave impulses will likely migrate through the ridge, and southwesterly flow increases over the central/southern Rockies. At the surface, persistent south/southeasterly low-level flow will maintain a warm advection regime across the southern/central Plains, while a daily surface dryline evolves over the High Plains. While