California – The early light glints off icy windshields in Eureka this morning as cold air grips the Humboldt Coast. At the same time, high astronomical tides continue pushing water onto low-lying roads near Humboldt Bay, creating a rare dual advisory for the region.
According to the National Weather Service in Eureka, both a Frost Advisory and a Coastal Flood Advisory remain in effect through late Wednesday morning. Temperatures dropped to near 34°F in inland valleys, prompting warnings for residents to protect sensitive plants and outdoor plumbing. Along the shoreline, minor flooding is expected between 8 a.m. and 11 a.m., with water levels at the North Spit tide gauge predicted to reach 9.1 feet MLLW.
Flooding may temporarily affect Jackson Ranch Road in the Arcata Bottoms and sections of King Salmon, where ponding water could make travel slow or unsafe. Drivers are urged to avoid flooded routes and allow extra time during the high tide window.
By Thursday, skies turn mostly sunny, with highs rising near 57°F and calmer conditions inland. However, another round of rain returns by Friday night, marking the start of a wetter, milder weekend.
Five-Day Outlook (Eureka, CA):
- Today: Partly sunny, high 56°F. Frost and coastal flooding early.
- Thursday: Mostly sunny, high 57°F.
- Friday: Chance of rain, high 57°F.
- Saturday: Rain likely, high 57°F.
- Sunday: Chance of rain, high 58°F.





