Marine Weather and Tide Forecast for Sudden Valley, WA

SHORT TERM /TONIGHT THROUGH SATURDAY NIGHT/
Temperatures have warmed into the 60s for much of the interior already this afternoon under mostly sunny skies across much of the region, while some banks of clouds remain along the mountains and extending into the lowlands of Lewis County. With zonal flow in place over the region and light low-level flow, not seeing much change over the next 24 hours or so. Expect another day with primarily sunny skies and temperatures again near normal on Friday. It's worth noting that some spots with clear skies and light wind could drop into the upper 30s in the typically colder spots, while most of the area will bottom out in the 40s.
Looking ahead to Saturday, the heights will rise over the region in response to the upper low dropping from the Gulf of Alaska.
This will bring warming across the region with afternoon temperatures into the 70s for the interior.

LONG TERM /SUNDAY THROUGH THURSDAY/
The upper ridge remains in place this weekend, with Sunday likely the warmest day for most Expect temperatures to reach well into the 70s and a few of the warmest spots could even approach 80. With the offshore trough in place and the ridge axis shifting east, there is some potential for increasing southwesterly flow aloft to perhaps bring a focus for some convection near the Cascades late Sunday or early Monday. While the chances for thunderstorms remains somewhat low (around 10%) at this time, those with outdoor plans in the Cascades over the holiday weekend will want to maintain aware of this potential. With the passing disturbance on Monday, expect temperatures to run a few degrees cooler with increasing clouds and a cooler air mass.

Another round of higher heights on Tuesday/Wednesday with another ridge building over the area will bring another round of temperatures will into the 70s for the interior as southerly flow aloft settles over the region. Confidence in the details of the forecast break down around midweek with ensemble guidance split between maintaining the high pressure over the region and warmer temperatures to persist and allowing the next front to push through the Pacific Northwest and bring slightly cooler, cloudier conditions with a return of rain chances.

AVIATION
Flow westerly aloft as the upper-level pattern trends more zonal. For tonight, mostly VFR is in store for terminals but isolated MVFR cigs are possible. A 30-50% chance of cigs below 3,000 ft exists for KHQM, KPWT, and KPAE overnight into Friday morning. Onshore flow keeping surface winds at a westerly component this afternoon between 5-10 kt but winds are to decrease in magnitude tonight. More widespread VFR expected on Friday.

KSEA...VFR conditions expected through the TAF period. Winds WNW 5- 10 kt this afternoon before becoming lighter and variable overnight.
Cloud coverage will vary throughout the period but again, cigs aren't expected to be less than 5,000 ft.

McMillian

MARINE
High pressure will maintain into the weekend. A weak disturbance is still on track to dissipate before making it to the coastal waters on Friday. As a result, impacts are unlikely. What we'll have to watch is diurnal westerlies through the Strait of Juan de Fuca. For tonight, HRRR guidance has a 60-80% chance of SCA gusts (21-25 kt) occuring over the central/east strait. This is a marginal situation as gusts appear to be infrequent but we'll continue to monitor the threat this afternoon-early evening.

The next front is currently forecast to arrive on Monday, with high pressure remaining stubborn over the coastal waters shortly afterwards. High pressure may trend into Wednesday as well but of lesser strength.

Seas 3-5 ft tonight into Friday. A slight uptick in seas is expected again Saturday night into Sunday, with seas building towards 5-7 ft.
Seas then look to persist within this range through the early part of next week.

McMillian

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...None.