Marine Weather and Tide Forecast for James, WA

SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/
A few lightning strikes have been observed along the Canadian border with Whatcom county, with pulse type cells developing in other portions of western Washington this afternoon. The threat for thunderstorms is still largely focused along the coast and in through portions of the north interior (15-20%) with lower chances for thunderstorms elsewhere.

The focus then shifts to Saturday as the low pressure moves directly overhead and provides more enhanced dynamics to support area-wide thunderstorms. Probabilities for thunderstorms have increased in the latest model guidance, up to around 30 to 35 percent for most areas. There could be locally higher probabilities up to 40 percent in areas from Everett south, but more so south of Olympia and east to south King County. Again, primary threats include lightning, gusty/erratic winds and periods of heavier rain. Given the fact that these storms are occurring over the weekend and there will be an increase in outdoor activities, please be sure to review the forecast and have a plan to head indoors should lightning move into your area. In addition to the thunderstorm threat, snow levels hover around 4000 feet on Saturday. Stevens Pass will likely see some flurries and short lived accumulations of an inch or less.
Higher elevations of the Cascades, including Paradise, could see a quick hit of between 3-5 inches of snow. Make sure to check the forecast if plans include mountainous recreation.

The low pressure system begins to shift out of the area late Saturday into Sunday, bringing some more appreciable clearing overnight into Sunday morning. As a result, there is potential for some frost development in eastern Grays Harbor County and the Cascade valleys and foothills on Sunday morning.
Temperatures will rebound into the mid 60s by Sunday afternoon.

LONG TERM /MONDAY THROUGH FRIDAY/
Unsettled conditions linger into early next week as another weak low pressure system arrives late Sunday into Monday morning.
Right now there is a 10-15% chance of thunder indicated for the Olympic Peninsula and southwest interior. Lingering periods of showers are possible through Wednesday as a trough lingers over the intermountain west. High pressure begins to develop late in the week. A lot is yet to be determined, however the week 2 outlook from the CPC, including the associated probabilistic hazards in this time frame does indicate a slight risk, 20-40% chance of hazardous temperatures in the June 13-19 period.
Monitor the temperature forecast over the next several days if you need to make advanced preparations for potential heat.

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AVIATION
Showers and isolated thunderstorms are expected to continue through the afternoon. There is still not enough confidence to include thunderstorms in the TAFs, but will be added if conditions warrant it. Surface winds have been gusty out of the SSW at 15 to 20 kts. Cigs have been VFR and will continue until tomorrow morning around 12Z, where a dip to MVFR is possible.
Thunderstorms become increasingly likely tomorrow for Puget Sound terminals and enhanced monitoring will be in place as it comes to inclusion of TS in the TAFs.

KSEA...Gusty SSW winds continue at the terminal with showers in the vicinity. Expect periods of rain to impact the terminal throughout the afternoon. Confidence is low in thunderstorms impacting the terminal, but a 10-15% chance still exists through the afternoon. Expect more thunderstorms tomorrow at and around the terminal, generally between 19Z-01Z. Primary hazards include lightning, heavy rain and gusty/erratic winds.

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MARINE
As low pressure moves over area waters, expect heightened winds over the next several days. This evening, a westerly push through the Strait of Juan de Fuca is expected, but are not likely to reach SCA criteria. Throughout the next several days, offshore seas will be between 6-8 feet. As the low pressure system moves overhead tomorrow, there is around a 70 to 80% chance of SCA winds through the Strait of Juan de Fuca on Saturday, and Puget Sound will have to be monitored. Winds will be stronger in and around any thunderstorms that happen to develop over the waters. Offshore winds increase Monday into Wednesday as unsettled weather continues. Conditions should ease as high pressure builds later in the week.

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FIRE WEATHER
ERCs will respond to the increase in moisture over the next several days, especially in the fine fuels. Today and more so Saturday will feature area wide chances for thunderstorms. The storms that are most likely to contain a wetting rain will be in the orographically enhanced regions of the Cascade foothills, with lesser amounts elsewhere. The threat for impacts from strikes on drier fine fuels cannot be fully ruled out. Fuels will continue to be monitored as high pressure builds in late next week and temperatures begin to climb into the week 2 time period.

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