SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0700 AM CST Fri Nov 20 2020 Valid 201300Z - 211200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected today or tonight. ...Synopsis... A belt of progressive/low-amplitude cyclonically influenced westerlies will prevail particularly over the northern two-thirds of the CONUS. Thunderstorm potential is expected to remain quite limited through tonight, due to a general lack of low-level moisture/buoyancy across the CONUS. ...Ozark Plateau... Southerly return flow will result in gradual moistening into the Ozark Plateau through tonight as a front moves south-southeastward into the region. Focused ascent along/north of the surface boundary will contribute to an increase in showers late tonight/early Saturday particularly across southern Missouri/southeast Kansas. A few lightning flashes cannot be ruled out. However, current expectations are for the overall thunderstorm potential/coverage to remain limited (sub-10 percent) based on marginal thermodynamic profiles, but this will be reevaluated in subsequent outlooks. ...South Florida... Showers will be possible across south Florida through much of the period, but warm mid-level temperatures and a lack of large-scale ascent should limit the potential for deep convection capable of producing lightning. ...Four Corners... Gradually increasing moisture and cooling mid-level temperatures may support very weak buoyancy later tonight in the Four Corners region, but the potential for lightning with any shower activity remains too limited for a thunderstorm area at this time. ..Guyer.. 11/20/2020
There’s more click here.