textproduct: Eureka

SYNOPSIS

Seasonably warm and dry conditions will build through midweek with gusty north wind along shore each afternoon.

DISCUSSION

Temperatures warm Monday behind a dry, southward passing shortwave disturbance. If there was available moisture with this passing perturbation, nocturnal thunderstorms would be possible. Interior valleys warm to the mid 80s to 90 degrees Monday afternoon. The northerly winds gusted in excess of 30 mph along the coast Sunday, with higher strength gusts along Cape Mendocino and Point St George. Very similar conditions as described will continue through mid week.

The strong Pacific high responsible for this pattern begins breaking down Thursday. A weak trough may move through late Thursday through Friday, with little impact expected other than some potential light drizzle. 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. This would result in some minor HeatRisk.

AVIATION

Northerly winds eased overnight Sunday. The well-mixed and dry environment will extend the period of VFR conditions, with the exception of around Humboldt Bay. Some stratus formed around Humboldt Bay again, with MVFR to IFR 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 while steep seas build in response. 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 favor poorly modeled large to hazardous seas to pulse into the inner waters at times, as is being observed. The greatest threat for this will be over the late Monday, Tuesday, and Wednesday after maximum afternoon winds are achieved. A Hazardous Seas Warning has been issued to cover this threat given what was observed Sunday night.

EKA WATCHES/WARNINGS/ADVISORIES

CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 8 PM PDT this evening for PZZ450.

Hazardous Seas Warning from 8 PM this evening to 11 AM PDT Wednesday for PZZ450.

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

Hazardous Seas Warning from 11 PM this evening to 11 AM PDT Wednesday for PZZ455.

Gale Warning until 11 AM PDT Wednesday for PZZ470-475.