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Northern California Cools Under Gusty Onshore Breezes Ahead of Renewed Heat

An atmospheric-river-fed low off British Columbia has strengthened Delta and coastal flows and sparked gale warnings for the weekend

Overview

  • Weekend temperatures in the Sacramento Valley have dropped roughly 8 to 10 degrees, with highs holding in the mid-to-upper 80s on Saturday and Sunday.
  • Gale warnings and small craft advisories are in effect for nearshore waters as coastal gusts reach 30 to 35 mph through city gaps and peninsula passes.
  • A slight chance of showers or brief thunderstorms exists in far northern counties and higher Sierra terrain while most lowland areas remain dry.
  • National Weather Service forecasts show the Pacific low lifting away early next week, allowing a high-pressure ridge to build in from the east.
  • Model guidance calls for triple-digit heat and designated Weather Impact Days to return to valley communities by next Thursday.