textproduct: Eureka

SYNOPSIS

Gusty north winds continue along shore through Wednesday. Seasonably warm to below average temperatures through Thursday before temperatures warm up Friday and through the holiday Weekend.

DISCUSSION

With a strong Pacific ridge of high pressure in place, the northerly winds gusted in excess of 30 mph along the coast Monday, with higher strength gusts along Cape Mendocino and Point St George. Very similar conditions as described will continue through mid week. Some weak disturbances will progress through from the north late Tuesday through Wednesday. Summertime systems such as these always bear watching for convective activity, but the lack of available moisture should limit development to some enhanced afternoon cumulus over the Yolla Bolly or far northeast Trinity County.

The strong Pacific high begins breaking down Thursday. A weak trough may move through late Thursday through Friday, with little impact expected other than some potential light drizzle. This feature has been progressively modeled father north however. Interior temperatures look to quickly rebound through next weekend behind the trough as a desert southwest high strengthens in advance of a stronger Pacific trough. There are high probabilities for high temperatures over 90 Saturday and Sunday for the interior valleys. Probabilities quickly lower for highs over 95 outside of a couple of the hottest valleys where upper 90s to up to 100 is possible. This would result in some minor to locally moderate HeatRisk.

AVIATION

Northerly winds eased overnight Monday. The well-mixed and dry environment will extend the period of VFR conditions, with the exception of around Humboldt Bay. Some stratus may develop around Humboldt Bay again, with mainly MVFR ceiling levels. Coverage and duration of ceilings will be very limited from expected light easterly winds. Winds will continue to be the main concern as they quickly increase Monday, with gust 20 to 30 kts expected again at the coastal terminals. Higher gusts will occur near Point St George and CEC.

MARINE

Strong northerly winds are over the waters with steep, large to hazardous seas are underway over all zones. Gale Warnings remain over the outer waters, but gale conditions can be expected around Point St George and Cape Mendocino. The proximity of gale conditions to the inner zones will continue to allow poorly modeled large to hazardous seas to pulsing into the inner waters at times. Up to 12 ft seas are being observed into the near-shore inner waters. The greatest threat for this will be over the late Monday, Tuesday, and Wednesday after maximum afternoon winds are achieved. Hazardous Seas Warnings remain for the inner zones to cover this threat. The Gale and Hazardous Seas warnings are extended into Thursday morning when conditions begin to slowly improve.

EKA WATCHES/WARNINGS/ADVISORIES

CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Hazardous Seas Warning until 6 AM PDT Thursday for PZZ450- 455.

Gale Warning until 6 AM PDT Thursday for PZZ470-475.