Marine Weather and Tide Forecast for Anchor Bay, CA

DISCUSSION
(Today through Friday)...Quiet and settled weather conditions persist across the area. A massive high pressure ridge is currently centered over Southeast California and Western Arizona, keeping our skies clear. The only exception is right along the Mendocino Coast and around Humboldt Bay, where low clouds and areas of fog (including patchy dense fog) are observed.
Otherwise, low clouds and fog is expected to lift and scatter out by late morning with diurnal heating. Well offshore, a shallow marine layer slowly approaches the area today. High- resolution model guidance suggest this marine layer will blanket much of the coastal waters, with low clouds nearing the North Coast late this morning or early afternoon. Well above normal warm temperatures and minor heatrisk is forecast to continue through Friday for the interior. Coastal areas are expected to run up to 5 degrees warmer today, with high in the upper 50s to mid 60s.

The high pressure begin to weaken tonight, while a shortwave trough approaches the Pacific NW. This will aid in a greater coverage of marine layer as the layer deepens into Friday in response. Temperatures are expected to trend sown across the interior on Friday with the push of marine moisture. Otherwise, unseasonably warm and dry weather conditions will persist through Friday. /ZVS

EXTENDED DISCUSSION
(Saturday through Thursday)...
High temperatures in the interior are forecast to moderate more substantially over the weekend and the heat risk will generally diminish. It will still remain above late March normals for portions of the interior and some of the hotter interior valleys will continue to have minor heat risk. Greater cooling will be possible early to mid next week with the passage of a synoptic scale trough and eventual frontal passage. Some precipitation is possible as well Tue into Wed. The greatest chance for rain is forecast across Del Norte and northern Humboldt Counties (40-60%).
Chance for measurable rain falls off sharply for southern Mendocino and Lake Counties (20% or less). The front could end up stalling offshore and provide light rain or drizzle to only interior Del Norte as well as coastal areas north of Cape Mendo.



AVIATION
Shallow fog has again formed along the coast, though coverage is much less then previous nights with dense fog isolated to right around Humboldt Bay. LIFR conditions are likely to expend along the coast by sunrise, however, with coastal conditions calm and very close to saturation. Again, even the coast will most likely clear back out to VFR by mid-morning with fog quickly eroding. High pressure beginning to erode will generally make low fog less likely Thursday night, but the potential for IFR marine conditions will still remain around 50/50. /JHW



MARINE
As high pressure gradually pushes east, the pressure gradient over the area has reached it weakest, allowing for gentle to mostly calm north winds through Thursday generally below 15 kts.
As high pressure finally breaks down, stronger winds will begin to return first to the southern waters Friday afternoon with gusts near 25 kts. Conditions will build to near gale during the day Saturday int he outer waters, with strong winds over 25kts pushing even into the inner waters Saturday afternoon and evening.

Calm winds will generally limit any meaningful short period seas through the week. That said a minor, long period southerly swell and modest mid period westerly swell will combine to create at least some seas up to 6 feet through mid week. Steeper short period seas will return this weekend with the wind, allowing for wave heights in excess of 10 feet by Saturday. /JHW



CLIMATE

Station/Forecast/Record/Date -------/--------/------/---- KCEC 62 82 1914 KEKA 62 78 1914 KUKI *91 91 1914 ---------------------------- *(Potential Tied or Broken Record)

EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory from 11 PM Friday to 2 PM PDT Saturday for PZZ455.

Small Craft Advisory from 5 PM Friday to 2 PM PDT Saturday for PZZ475.