SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1212 AM CDT Sat Oct 24 2020 Valid 251200Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Organized severe thunderstorms are not currently forecast across the contiguous U.S. on Sunday. ...Synopsis... The upper-air pattern will amplify over the western U.S. on Sunday as a large-scale trough digs southward into the Colorado River valley. A broad, strong belt of southwesterly mid-level flow will extend northeastward from the Desert Southwest through the central Great Plains and into the Great Lakes. In the low levels, an arctic cold front will surge southward across a large part of the southern Great Plains during the period with only a weak low/inverted surface trough draped northeastward from TX into the Ozark Plateau. Isolated weak/disorganized thunderstorms are forecast during the day on Sunday across parts of FL and parts of the southern Appalachians. The risk for showers and a few post-frontal/elevated thunderstorms will increase Sunday night across the southern Great Plains as a 40-kt southerly LLJ develops. Weak instability will likely preclude severe thunderstorms from developing with the late-night activity. ..Smith.. 10/24/2020
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