SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0134 PM CST Sun Dec 01 2024 Valid 012000Z - 021200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight. ...20z Update... No forecast changes are needed; thunderstorm potential over the country remains minimal for today. See the previous discussion for additional details. ..Moore.. 12/01/2024 .PREV DISCUSSION... /ISSUED 1010 AM CST Sun Dec 01 2024/ ...Synopsis and Discussion... Large-scale upper troughing and cyclonic flow aloft will continue to prevail east of the Rockies through the period, while an upper ridge builds over the West. A cool/stable pattern, with the influence of surface high pressure over the Southeast and continental trajectories over the Gulf of Mexico, will limit lightning potential across the CONUS through tonight. Shallow convection will persist in lake effect snow bands off Lakes Erie and Ontario, but the probability for lightning flashes should remain less than 10 percent. Across deep south Texas and vicinity, weak low-level warm advection along a coastal front near the lower Texas Coast may eventually lead to an increase in convection offshore, although the potential for thunderstorms over land is expected to remain low.