Under California's Sierra Nevada Mountains, dense rock at the bottom ... and seismic wave recording can be used to map the disappearing lithosphere. That's how scientists know what's gone and ...

On Monday, a winter storm was bringing heavy snow across the Sierra Nevada mountains and into the ... the warning said. A map of California shows where drivers are advised against taking detours ...

So far this season, California's snowpack in the Sierra Nevada mountains has been below average ... feet of snow during the same time period. A map from AccuWeather shows that the areas ...

California’s snowpack will be near ... Measurements officials have taken at about 260 sites across the Sierra show that the northern mountains have more snow than the southern areas.