An active weather pattern is anticipated to bring rain and snow across various regions of the United States. The National Weather Service has warned of thunderstorms and heavy rainfall particularly in southeastern Texas through Monday. Colder air is expected to produce snowfall at higher elevations of the Sierra Nevada and Cascades. Heavy rain and snow are forecasted for Washington, Oregon, and Northern California by Sunday morning." name="description">window.pageLoadStarted = (new Date()).getTime().