At more than 7,000 feet near Truckee, California, the Central Sierra Snow Lab has been recording data since the 1800s, tracking snowfall and how it translates into water for the West. Senior National Correspondent Justin Michaels visited the lab to understand why this information is vital to the region: | The Weather Channel

⚠️Traffic Advisory ⚠️ (12/12/24 at 9:00pm) Current traffic conditions on I-80 in Truckee are experiencing heavy delays. If you are traveling over the Donner Summit, please be patient and prepared for delays. Ensure your vehicle is winter-ready, allow for extra travel time, and stay alert for changing conditions. ❄️ for updates on road conditions visit the Caltrans Quickmap app. | CHP - Truckee

“According to the map, we’ve only gone four inches!” ❄️🛵 Reminder: Chain control is still in effect over Donner Summit. And yes, motorcycles count—unless your Harley’s rocking some snow tracks (and we’d still say no). Motorcycles snow = not exactly Aspen material. Stay warm, stay safe, and maybe wait ‘til the snow melts to chase your road trip fantasies. (03/30/25 at 9:10am) #CHPTruckee #JustGoMan #YouWillBeTurnedAround #NotAspenBro #SoYoureTellingMeTheresAChance #MotorcycleMisadventures #Chain

Chain Day on Donner Pass in Truckee California. A few drivers need a little more practice it seems. | Dean Croke