FRESNO, Calif. — Fall looked a lot like winter across Northern California on Monday as the first major storm of the season brought out snowplows on Interstate 80, prompted travel advisories at higher elevations, and showered the rest of the parched region with much-needed rain.
Forecasters were calling for up to 2 feet of snow at the highest elevations in the northern Sierra Nevada, a good sign for a state dependent on winter snow accumulation for its water supply.
‘‘It looks like Mother Nature threw us our first snowball,’’ said Rochelle Jenkins of Caltrans, which was enforcing chain controls above 4,300 feet on Interstate 80, the main highway through the Sierra Nevada.
A winter storm warning above 5,500 feet will remain in effect until 5 a.m. Tuesday.
Baseball fans are hoping for clear skies at 5:07 p.m. as the San Francisco Giants and St. Louis Cardinals play the deciding seventh game of the National League Championship Series at AT&T Park. The forecast is for a 30 to 40 percent chance of scattered showers across the region at game time.
More-widespread precipitation was expected to move across Northern California on Wednesday. Highway officials say a series of storms brewing in the Pacific could wallop the northern half of the state through Friday.