A Frost Advisory is in effect from 1 a.m. to 9 a.m. PDT Tuesday for Lake County in Northern California.
Temperatures as low as 34 degrees will result in frost formation.
NWS Eureka issued the advisory at 2:02 p.m. PDT Monday.
Sensitive outdoor plants may be killed if left uncovered.
Where the Advisory Applies
The advisory covers Northern Lake, Western Lake and Eastern Lake.
Communities include Finley, Upper Lake, Middletown and Gravelly Valley Airport.
What to Expect
When: 1 a.m. to 9 a.m. PDT Tuesday.
Temperatures: lows as cold as 34 degrees.
Impacts: frost could harm sensitive outdoor vegetation.
Lake County also had a Frost Advisory Sunday morning, with lows as cold as 35 degrees.
Elsewhere on the North Coast
NWS Eureka says high astronomical tides from Monday through Thursday will combine with already high water levels.
That could cause minor to moderate flooding in King Salmon and the Arcata Bottoms, and let waves crash onto the coastal bike path.
On Monday, the tide in Humboldt Bay peaked around 9.1 feet above MLLW, with minor flooding in some locations.
How to Protect Plants
Take steps now to protect tender plants from the cold.
Cover sensitive plants before sunset, and bring potted plants indoors if you can.
Local forecasts and alerts: NWS Eureka and the NWS Eureka hazards map.
