Administrators NorthGeorgiaWX Posted September 29 Administrators Share Posted September 29 SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0210 PM CDT Sun Sep 29 2024 Valid 292000Z - 301200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast for today. ...20Z Update... The previous forecast (see below) remains unchanged. ..Squitieri.. 09/29/2024 .PREV DISCUSSION... /ISSUED 1123 AM CDT Sun Sep 29 2024/ ...Synopsis... A relatively quiet convective day is expected across the CONUS today. Over portions of UT, weak/peripheral midlevel height falls will promote isolated high-based thunderstorms capable of locally strong gusts, aided by inverted-V thermodynamic profiles. Weak instability and flow/shear should limit thunderstorm intensity and organization. Farther east, isolated thunderstorms will be possible this afternoon and evening over portions of the OH Valley into the Mid-Atlantic -- ahead of a vertically stacked/weakening cyclone. Very poor deep-layer lapse rates and warm air aloft may limit lightning over many areas, though a few isolated flashes cannot be ruled out, given some large-scale ascent. Ahead of a quasi-stationary front draped across northern FL, diurnal heating of a moist/uncapped air mass will support isolated to widely scattered thunderstorms across the FL Peninsula this afternoon. Locally strong water-loaded downbursts could accompany a couple storms over northeast FL, where low-level convergence and midlevel flow will be slightly stronger. However, poor midlevel lapse rates and only marginal deep-layer shear should limit the severe threat. Read more View the full article Quote Link to comment Share on other sites More sharing options...
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