SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1056 AM CST Thu Dec 02 2021 Valid 031200Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk of severe thunderstorms appears negligible Friday through Friday night, but a low probability of thunderstorms may develop across parts of the southern Great Plains into the lower Mississippi Valley vicinity. ...Synopsis... A stagnant weather pattern will persist across much of the CONUS, with strong mid/upper west/northwesterly flow stretching from the Pacific Northwest toward the Mid-Atlantic. In southern stream flow, a weak upper shortwave perturbation will drift eastward from southern CA toward the Four Corners vicinity. At the same time, another mid/upper shortwave impulse will lift east/northeast across TX to the lower MS Valley. Weak surface low pressure will drift east across the southern Plains in response to the series of southern stream mid/upper shortwave troughs, resulting in southerly low level flow and northward transport of Gulf moisture across TX toward the Arklatex/lower MS Valley vicinity. Steepening midlevel lapse rates will allow for weak destabilization from parts of central/eastern TX toward to Ozarks. Much of this instability will remain elevated, confined above a stout warm layer around 1-2.5 km. Combined with modest effective shear, severe potential is expected to remain low, though a few thunderstorms are possible, mainly after 00z. ..Leitman.. 12/02/2021 Read more LIVE: spc.noaa.gov
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