Sunrise 6:01 AM   Sunset 8:23 PM Moonrise 12:08 AM   Moonset 7:40 AM

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PZZ110 Grays Harbor Bar- 321 Am Pdt Sun Apr 28 2024
combined seas 6 to 8 feet, rising to 7 to 9 feet this afternoon. Bar conditions moderate. Maximum ebb currents will occur around 745 am Sunday, 830 pm Sunday, and around 830 am Monday.

PZZ100 321 Am Pdt Sun Apr 28 2024
Synopsis for the northern and central washington coastal and inland waters - Unsettled weather continues with gusty southwesterly flow over the area waters today. The next frontal system will move across the region Monday with weak high pressure building across the region Tuesday and Wednesday. Yet another front looks to cross the area waters Thursday.

FXUS66 KSEW 282208 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 308 PM PDT Sun Apr 28 2024

SYNOPSIS
Unsettled, cool weather continues with a series of frontal systems crossing the region through the middle of the week. A brief warming and drying is expected midweek before conditions turn unsettled again late week.

SHORT TERM /TONIGHT THROUGH WEDNESDAY/
Scattered showers continue to spread onshore across Western Washington this afternoon as an upper trough west of Haida Gwaii digs southward toward the region. Cooling temperatures aloft will lead to increasing instability late today into Monday for a chance of thunderstorms as well as snow levels dipping to most pass levels late tonight. A Winter Weather Advisory continues for the Cascades above 3500 feet late tonight into Monday morning. Another upper trough digs southward across the area Monday night into early Tuesday. The focus with that system continues to be a bit further southward...with much of the QPF from the Seattle area southward.

The trough axis shifts east of the area by late Tuesday afternoon as drier north-northwest flow aloft develops ahead of a weak upper ridge offshore. As things presently stand, Wednesday is shaping up to be one of the nicest days of the week as weak ridging aloft leads to mostly dry conditions, some sunshine, and high temperatures bouncing back to near seasonal norms.

LONG TERM /THURSDAY THROUGH SUNDAY/
The woes of deciphering the extended portion of the forecast continue. There is general agreement that another upper trough crossing southern British Columbia on Thursday will bring a returning chance of showers.
Uncertainty in the forecast for Friday into next weekend increases by the day. The Euro ensembles favor additional troughing and cool temperatures while the more optimistic GFS ensemble mean has weak upper ridging and temperatures climbing a little above normal.
The NBM 10th and 90th percentile high temperature forecasts have a 10 to 15 degree spread by Friday and Saturday. Given these levels of uncertainty, near climo temps and a generic chance of showers forecast late in the week is the best forecast at this stage. 27

AVIATION
West-southwest flow as upper-troughing continues. As above so below, southwest winds are occuring at the surface with gusts up to 20-25 kts being observed at a number of terminals. VFR trending so far this afternoon. However, more widespread MVFR CIGs are set to return tonight with localized IFR possible at times.
Showers are to remain tonight as well along with a convergence zone forming in the vicinity of KPAE and KAWO before meandering southward. Showers are to continue into Monday also with VFR returning around midday.

KSEA...It has been a mix of VFR/MVFR conditions so far today. CIGs have been around 3,500-4,500 but passing showers have done enough to bring down CIGs to around 2,500-3,000 ft at times. For tonight, 50- 60% chance of MVFR trending most hours with continued showers. Winds are to remain out of the SW between 8 to 12 kts with gusts up to 20 kts but gusts should ease into the early morning hours on Monday.
Convergence zone activity late tonight may slow improvement back to VFR until Monday afternoon.

McMillian

MARINE
Another active day across area waters with a host of SCA out. Puget Sound and Northern Inland waters will continue before conditions subside this evening. However, the central and eastern strait along with coastal waters where seas are around 9 to 10 ft, will persist into Monday morning. Scattered showers along with an isolated chance for thunderstorms are in the offing this afternoon and Monday afternoon. An additional disturbance looks to arrive Monday night into Tuesday but some uncertainty remains on winds.

Seas remain elevated through Tuesday from 8 to 10 feet followed by a gradual decrease to 4 to 6 feet later in the week.

McMillian

HYDROLOGY
No river flooding is anticipated over the next seven days.



SEW WATCHES/WARNINGS/ADVISORIES
WA...Winter Weather Advisory from 11 PM this evening to 11 AM PDT Monday for West Slopes North Cascades and Passes-West Slopes North Central Cascades and Passes-West Slopes South Central Cascades and Passes.

PZ...Small Craft Advisory until 5 AM PDT Monday for Central U.S.
Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 11 PM PDT this evening for Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory until 8 PM PDT this evening for Puget Sound and Hood Canal.

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Markham
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Sun -- 01:07 AM PDT     Moonrise
Sun -- 03:26 AM PDT     9.27 feet High Tide
Sun -- 06:04 AM PDT     Sunrise
Sun -- 08:39 AM PDT     Moonset
Sun -- 10:45 AM PDT     -0.62 feet Low Tide
Sun -- 05:39 PM PDT     7.12 feet High Tide
Sun -- 08:23 PM PDT     Sunset
Sun -- 10:32 PM PDT     3.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Markham, Grays Harbor, Washington, Tide feet

Grays Harbor Entrance
Click for Map
Sun -- 12:56 AM PDT     1.74 knots Max Flood
Sun -- 01:08 AM PDT     Moonrise
Sun -- 03:50 AM PDT     -0.00 knots Slack
Sun -- 06:04 AM PDT     Sunrise
Sun -- 07:44 AM PDT     -3.40 knots Max Ebb
Sun -- 08:40 AM PDT     Moonset
Sun -- 11:30 AM PDT     0.01 knots Slack
Sun -- 02:10 PM PDT     1.98 knots Max Flood
Sun -- 05:56 PM PDT     -0.00 knots Slack
Sun -- 08:23 PM PDT     Sunset
Sun -- 08:23 PM PDT     -1.50 knots Max Ebb
Sun -- 11:14 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Grays Harbor Entrance, Washington Current, knots

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