SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1055 PM CST Sun Feb 07 2021 Valid 081200Z - 091200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are not expected today. ...Synopsis... Broad cyclonic upper flow will prevail across the CONUS through the period. An embedded mid-level impulse will pivot around the aforementioned cyclonic flow over the south-central to southeast U.S, inducing northward low-level moisture advection along the central Gulf Coast and Florida Peninsula through the day and overnight. The leading edge of more favorable moisture return will first overspread the Florida Peninsula. Diurnal heating will encourage the development of a mixed boundary layer and modestly buoyant troposphere (given relatively poor mid-level lapse rates), with isolated thunderstorm development expected. During the overnight hours, as the mid-level impulse traverses the Southeast, a stronger low-level mass response will result in moistening of the 925-850 mb layer over portions of the Gulf Coast to the Georgia coastal waters. At these locales, adequate buoyancy and lift should foster at least isolated thunderstorm development to the end of the period (12Z Tuesday). ..Squitieri/Smith.. 02/08/2021
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