Marine Weather and Tide Forecast for Bayview, CA

DISCUSSION
A passing cold front is keeping temperatures cool today with light drizzle producing trace amounts of accumulation.
HRRR model suggests a continuation of similar conditions tonight as the marine layer deepens which will last well into Monday morning. Temperatures will still be warmer than average, especially for inland locations. The minimum temperatures overnight into Tuesday morning could reach the high 20's, low 30's for southern Trinity county around Ruth and Mad River. Similar low temperatures for interior Humboldt's eastern periphery. A frost or freeze product could be applied in the near future to cover the hazards.

A strong Pacific ridge will generally remain in control as additional weak fronts attempt to briefly flatten it, introducing more very slight chances for light showers on occasion, mainly in Del Norte County. Chances for a wetting rainfall (0.1 inch or higher) only reach 25% to 35% late next week and increase some next weekend. There will periods of rebounding high temperatures between the fronts.

Northerly winds will remain breezy. A cutoff low to the south will further tighten the pressure gradient against the restrengthening ridge Monday and Tuesday. Northerly winds will increase in response and will be quite gusty Monday afternoon in particular. Forecast soundings indicate well-mixing through the boundary layer through this period, allowing for efficient downward momentum transfer and gusty surface winds along the coast. NBM holds a high chance (60%- 80%) for maximum wind gust of 30 mph or higher Monday for areas along the coast and higher terrain areas of interior Del Norte and Humboldt counties. There is a moderate to high chance (40%-60%)
for gusts to exceed 35 mph over some of the exposed coastal headlands and over coastal Del Norte and around Cape Mendocino.
Winds will ease some Tuesday, but will remain breezy through Tuesday afternoon. JJW /EYS

AVIATION
North Coast terminals remain in LIFR/IFR this morning due to low cloud ceilings and degraded visibilities. Using ASOS and Webcam data, the cloud layer is between ~400-3000 ft AGL. High resolution models show confidence in this fog layer dissipating around 20Z (+/- 1hrs) leading to VFR conditions with strong northerly winds with gusts up to 25kts. Winds are forecast to remain strong through the night, especially along coastal terminals. HRRR, NAM, and WRF data show a cloud layer reforming to IFR conditions tonight between 00-03Z with fog formation possible after 12Z. This stratus and fog is forecasted to mix out again around 19Z (+/-1hr)
on 03/09.

Inland terminals will experience clearer skies with variable, terrain driven winds. Strong winds along ridgetops could mix down to terminals, increasing the potential for LLT near terrain. River valley fog is expected overnight. However, high confidence (>70%)
for KUKI remaining clear.



MARINE
Marine conditions will remain hazardous for small craft through today. Strong northerlies will create steep wind waves combining with mid-short period NW swell. A weak cold front passing over NW CA will cause an increase in the pressure gradient, drastically strengthening winds Monday morning. Gale warnings have been hoisted for all coastal waters through Monday. Near storm force wind gusts (~45kts) are possible Monday, near and downwind of Cape Mendocino as a weak frontal systems passes over the area.

Large steep seas are expected to build, reaching 13-15 feet Monday evening through Tuesday, highest south of Cape Mendocino. These strong winds will ease midweek. Moderate winds will likely continue south of Cape Mendo. Steep seas will be slower to subside. A series of mid and long period swell groups also propagate into the waters mid to late week.



EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory until 5 AM PDT Monday for PZZ450-470.

Gale Warning from 5 AM Monday to 4 AM PDT Tuesday for PZZ450-470.

Small Craft Advisory until 11 PM PDT this evening for PZZ455.

Gale Warning from 11 PM this evening to 10 AM PDT Tuesday for PZZ455.

Gale Warning until 5 AM PDT Wednesday for PZZ475.