Monday could see severe thunderstorms and even tornadoes in Northern California as a potent Pacific storm sweeps through. The risk of severe weather is unusual for California, with a slight risk forecasted, particularly in the Southern Sacramento and northern San Joaquin Valley areas. The atmosphere will be primed for thunderstorm development from mid-morning onward, with some storms likely to be severe. Wind shear combined with atmospheric instability increases the risk of tornadoes or funnel cloud formation.
This threat extends to areas away from the foothills, including cities like Sacramento, Stockton, and Modesto. The storm will bring heavy rain, strong winds, and the potential for localized flooding, especially in low-lying areas. Snowfall in the Sierra region could be substantial, causing hazardous travel conditions. The weather pattern is expected to persist through Tuesday before tapering off gradually by midweek. Rainfall estimates indicate significant amounts across the region, with higher totals in certain areas, while the Sierra could see several feet of snow accumulation. Dry conditions are anticipated toward the end of the week, with temperatures remaining relatively mild. Stay updated with the latest forecasts from the Sacramento’s First Alert Weather Team during this active weather period