The National Weather Service in Sacramento is forecasting a robust system that will continue to impact the area through Tuesday evening, bringing a mix of weather conditions that could affect your commute and outdoor plans. Expect a flurry of rain, heavy mountain snow, gusty winds, and even the chance of isolated thunderstorms. For those planning to traverse the northern Sierra or southern Cascades, be aware that snow levels are between 3000 to 4000 feet with a "60-90%" chance of more than 12 inches of snow accumulation above 5000 feet, as detailed in the latest NWS report.
Beyond the mountains, residents should be ready for southwest wind gusts reaching 20-30 mph in the Valley and foothills, and stronger gales of 30-45 mph over the Sierra Crest, especially this afternoon. Meanwhile, an estimated "15-35% chance" of afternoon and evening thunderstorms will loom over the Valley and Foothills today and into Tuesday. We can expect lightning, brief heavy rain, small hail, and gusty winds, according to the NWS advisory. This tumultuous weather has already triggered a Winter Storm Warning for parts of the region, in effect until 5 PM PDT today.
For flyers, the outlook is a mixed bag, with "generally VFR conditions" expected at TAF sites but some potential for local MVFR/IFR in isolated thunderstorm activity—between 18z and 03z this evening. The Sierra is set to face IFR/LIFR conditions in snow showers over the next 24 hours, adding another layer of inconvenience for travelers. Those venturing into the affected areas are advised to heed warnings and prepare for delays and possible cancellations. Winds across the Delta, Valley, and foothills will also be gusting 20 to 35 knots at times through 03z, with gusts up to 40 knots possible along the Sierra crest, as stated by the Weather Service.
Sacramento will see a brief break in the weather this week. Light showers are expected in the northern Sierra on Wednesday and Thursday, but they will have minimal impact. Drier and warmer conditions are forecast for the weekend.
