Sunrise 5:40 AM   Sunset 8:42 PM Moonrise 8:10 AM   Moonset 12:19 AM

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PZZ110 Grays Harbor Bar- 254 Am Pdt Sun May 12 2024
combined seas around 5 to 7 ft. Bar conditions light to moderate. Maximum ebb currents will occur around 800 am Sunday, 900 pm Sunday, and 900 am Monday.

PZZ100 254 Am Pdt Sun May 12 2024
Synopsis for the northern and central washington coastal and inland waters - High pressure will remain centered offshore with lower pressure inland through much of the week for varying degrees of onshore flow. A couple of weak frontal systems will pass mainly to the north of the area tonight and Monday.

FXUS66 KSEW 121057 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 357 AM PDT Sun May 12 2024

SYNOPSIS
Upper level ridge over the area moving east this afternoon. Weak upper level trough moving through tonight with a weak upper level disturbance following Monday. Upper level ridge building Tuesday and remaining in place through Friday. Upper level trough reaching the area Saturday.

SHORT TERM /TODAY THROUGH TUESDAY/
Satellite imagery shows weak upper level ridge over the area. Stratus along the Oregon coast has not made it to the Washington coast as of 10z/3 am.
Temperatures were mostly in the upper 40s and 50s.

Upper level ridge moving east today. Light surface gradients this morning turning onshore this afternoon. Marine air moving into the area will drop high temperatures 10 to 15 degrees versus Saturday.

Upper level ridge well to the east tonight with low level onshore flow continuing overnight. Weak upper level trough moving across Western Washington. Not much moisture associated with this feature. It will enhance the marine layer over the area. Weak convergence over Snohomish and possibly Northern King County could produce a light shower. Lows in the upper 40s to mid 50s.

Upper level ridge building well offshore Monday. Weak shortwave embedded in the northwesterly flow aloft moving through bringing just some cloud cover. This plus the stratus associated with the marine push will make for a mostly cloudy day. Cooling trend continues with highs only in the upper 50s to mid 60s.

Upper level ridge offshore building into Western Washington Monday night into Tuesday. Surface gradients going northwesterly Monday night which will limit the amount of stratus Tuesday morning. With the warming temperatures aloft high temperatures will warm back up above normal, in the 60s and lower 70s. Lows Monday night in the 40s.

LONG TERM /WEDNESDAY THROUGH SATURDAY/
Models starting to show more consistency in the extended period with the upper level ridge over the area Wednesday slowly weakening through Friday. Upper level trough dropping down from the north Saturday. Surface gradients remain onshore keeping temperatures from getting very warm. Warmest day with the upper level ridge the strongest Wednesday. Highs in the mid 60s to mid 70s. Highs slowly cooling down to the 60s by Friday. Lows in the 40s. Upper trough bringing more cloud cover and a chance of showers to the Cascades Saturday.
Highs remaining near normal, in the 60s. Felton

AVIATION
Westerly flow aloft will back to southwesterly tonight as an upper ridge gives way to a weak upper trough and associated front that will cross the region late tonight into early Monday. Increasing low level onshore flow associated with this will bring IFR or low MVFR stratus to the coast by this evening. VFR conditions across the interior of Western Washington today are expected to deteriorate to MVFR by early Monday A.M.

KSEA...VFR with increasing high level moisture expected late this afternoon into the evening. Ceilings expected to fall to the low end of MVFR by 12Z-15Z Monday. Surface winds light and variable becoming W/NW 5 to 10 knots midday then N/NE late afternoon and early evening. Winds expected to back to S/SW after 06Z tonight. 27

MARINE
Broad surface ridging offshore with lower pressure inland will remain the general synoptic situation through much of the week ahead leading to varying degrees of onshore flow. A pair of weak systems passing mainly to the north of the area tonight and Monday will enhance the onshore flow for gales later today in the central/east strait and small craft advisory conditions for adjacent waters as well as the coastal waters. Onshore gradients look to temporarily weaken midweek before additional weak systems increase the onshore flow again later in the week. All in all, this looks very much like a typical late spring/early summer type of pattern.

27

HYDROLOGY
The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated as needed.

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...Small Craft Advisory from 2 PM this afternoon to 4 AM PDT Monday for West Entrance U.S. Waters Strait Of Juan De Fuca.

Gale Warning from 2 PM this afternoon to 4 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 3 AM PDT Monday for Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory from 5 PM this afternoon to 4 AM PDT Monday for Admiralty Inlet.

Small Craft Advisory until 11 PM PDT this evening for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

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Montesano
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Sun -- 12:06 AM PDT     2.71 feet Low Tide
Sun -- 01:19 AM PDT     Moonset
Sun -- 05:39 AM PDT     7.82 feet High Tide
Sun -- 05:42 AM PDT     Sunrise
Sun -- 09:10 AM PDT     Moonrise
Sun -- 12:53 PM PDT     -0.84 feet Low Tide
Sun -- 07:25 PM PDT     6.51 feet High Tide
Sun -- 08:40 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Montesano, Chehalis River, Grays Harbor, Washington, Tide feet

Cosmopolis
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Sun -- 01:20 AM PDT     Moonset
Sun -- 04:31 AM PDT     10.20 feet High Tide
Sun -- 05:42 AM PDT     Sunrise
Sun -- 09:11 AM PDT     Moonrise
Sun -- 11:23 AM PDT     -1.10 feet Low Tide
Sun -- 06:17 PM PDT     8.50 feet High Tide
Sun -- 08:40 PM PDT     Sunset
Sun -- 11:26 PM PDT     3.99 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Cosmopolis, Chehalis River, Grays Harbor, Washington, Tide feet

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