Marine Weather and Tide Forecast for Eureka, CA

DISCUSSION
An upper level trough moving into the Pacific Northwest will bring a weak cold front to northwest California.
Light rain is expected in Del Norte and Humboldt counties.
Rainfall amounts are expected to range from a quarter inch in Del Norte county with only a trace to a few hundredths in southern Humboldt. Trinity and Mendocino counties are only expected to see a few sprinkles with Lake county likely staying dry or seeing a few sprinkles in the northern mountains.

Rain is expected to come to an end this evening although there may be some lingering clouds overnight. Fog may also develop in the northern valleys. Dry weather and clearing skies are expected on Sunday. Highs will be in the low 50s to low 60s. The valleys in eastern Trinity county may stay in the 40s if the fog is slow to clear out. The coldest night will likely be Sunday night into Monday morning as dry air moves into the area. Offshore flow also keeps the air at the coast dry. Gradually warming temperatures are expected on Monday. Tuesday increasing clouds may keep temperatures slightly cooler.

Wednesday through the weekend the ensembles are in good agreement that a wetter pattern will return. Some of the ensemble clusters show rain moving in as early as Wednesday afternoon or Wednesday night. There is a 40 to 60 percent chance of more than a half inch of rain from 4pm Wednesday through 4pm Thursday. Friday and Saturday the ensembles are showing the potential for heavier rain with the ensembles showing increased probabilities of higher IVT.
The NBM is showing the 75th percentile (higher end) of 2 to 5 inches for a 24 hour period ending 4pm Saturday. The 25th percentile (lower end) range is 0.5 to 1.25 inches for the same time frame. The higher end would likely bring some minor flooding.
This time frame will need to be watched as it gets closer. MKK

AVIATION
Stratus lingers just off the coast; however, coastal terminals have remained VFR overnight due to light offshore flow.
Models indicate that ceilings and visibilities will lower at the coastal terminals this afternoon as a band of light rain moves through the region. Conditions at the coastal terminals are expected to remain MVFR to IFR into early tonight before a possibility of MVFR to VFR into very early tomorrow. Ukiah will remain VFR.

MARINE
Due to a weak front moving through, very light winds persisted in the coastal waters overnight, but northerlies will begin to pick up by this evening and continue into Sunday. Northerly winds will increase, peaking Sunday afternoon with gusts of 25-30 kts possible nearshore and gales possible in the lee of Cape Mendocino. Steep wind waves will be associated with these winds. At the same time, a large mid-period westerly swell will build in, increasing significant wave heights to 14 to 15 ft. Conditions will improve early next week. JB

EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory from 9 PM this evening to 3 PM PST Monday for PZZ450-455-470.

Small Craft Advisory from 9 PM this evening to 3 AM PST Sunday for PZZ475.

Gale Warning from 3 AM to 9 PM PST Sunday for PZZ475.