The National Weather Service in Hanford has issued a dense-fog advisory until 10 a.m. this morning for the central San Joaquin Valley.
Highways affected by the advisory include Highway 99 from Merced to Tulare, Highway 43 from Selma to Wasco, Highway 46 from Wasco to Lost Hills, Highway 41 from Fresno through Lemoore and Highway 180 between Fresno and Mendota.
The fog advisory replaces an earlier forecast of rain this morning, although there remains a chance of showers this afternoon.
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10:24 p.m. Thursday: After more than a week without rain, the Valley will see two storms move through starting today.
The first storm, coming from the Central Coast range, could arrive in Fresno as early as this afternoon. But the bulk of the storm is expected to drop rain beginning early this evening, said Modesto Vasquez, a meteorologist with the National Weather Service in Hanford.
The first system is expected to bring about a quarter-inch of rain to the Fresno area and could drop snow levels to around 5,000 feet.
The rain is expected to stop for most of Saturday and then start up again when the next storm arrives Sunday afternoon, Vasquez said. The second system, coming from the north, is expected to be slightly colder and wetter.
The second storm could produce as much as a half-inch of rain for the Valley. Snow levels could drop to around 4,000 feet by Sunday evening, Vasquez said. The system should move out by Monday afternoon.
Temperatures today in Fresno could reach the mid-60s with an expected overnight low of 46, Vasquez said. The Valley's highs throughout the weekend should hover around 60, with lows in the mid-40s, he said.