Marine Weather and Tide Forecast for Big Lagoon, CA

DISCUSSION
Latest GOES-West satellite imagery and surface observations depicted low level moisture across much of the forecast area overnight, with some sprinkles been reported. Low temperatures have been in the upper 30's to mid 40's across the interior valleys.

A H5 shortwave ridge will begins to build into the area today, bringing a slightly drier airmass. Breezy northwest winds of 20- 30 mph are possible along the coast this afternoon as well.
Afternoon inland temperatures will warm up into the mid 60's to mid 70's. Enhancing onshore flow will remain the coastal areas in the mid to upper 50's. Areas of valley fog are expected to develop Tuesday night into Wednesday. Overnight temperatures are forecast to be remain in the upper 30's to mid 40's.

A drying and warming trend will continue through the remainder of the work week across Northwest California. Interior high temperatures are anticiapated to warm up into the mid 70's to low 80's, with the warmest day Thursday and Friday. Breezy conditions are expected each afternoon as a thermal trough develop inland.

Ensemble clusters and determonistic model shows a upper level trough digging southward from the Gulf of Alaska Friday night into the weekend. About 25% of the ensemble members indicate a slightly wetter outcome on Saturday, with showers mostly over the interior and perhaps a push of marine moisture and low clouds.
Otherwise, dry weather with near or below normal high temperatures in the interior is the most likely outcome for this weekend. /ZVS



AVIATION
After the passage of a front and light rainfall, patchy stratus has developed and lingered through portions of the coast and into some of the interior valleys. Ceilings are maintaining MVFR levels with dips into IFR. Going into sunset, lower levels are possible given the surface moisture and higher dewpoints from the recent rainfall. Most terminals will scatter out to VFR today, but the onshore flow may drive the stratus in longer around Humboldt Bay. Probabilities for a return to IFR ceilings tonight are highest for Humboldt Bay and ACV (54%). Chances lower going into Wednesday morning with light offshore flow forecast to increase. JJW



MARINE
Northerly winds have increased across the waters behind a frontal system. Northerly winds will increase through this afternoon to around 20 kts, and locally higher to 25 kts in the souther waters south of Cape Mendocino. The northerlies will pulse higher Wednesday afternoon when winds up to 27 kts will spread over much of the southern zones. A similar wind pattern will carry through Thursday night before a trough from the north eases the pressure gradient and the northerlies subside in response Friday. The northerlies will increase behind the trough Saturday and likely into next week as high pressure returns. A mid period WNW swell has peaked early this morning in the 12 ft area, and this swell will continue subsiding throughout the day. The Small Craft Advisory in the Northern Inner zone where lighter winds persist and seas dropping below 10 ft has been allowed to expire, while winds and seas maintain advisory conditions elsewhere. JJW



EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory until 3 AM PDT early this morning for PZZ450.

Small Craft Advisory until 9 PM PDT Wednesday for PZZ455- 470-475.