Sunrise 5:23 AM   Sunset 8:47 PM Moonrise 6:16 PM   Moonset 3:14 AM

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PZZ135 Puget Sound And Hood Canal- 907 Am Pdt Tue May 21 2024
Today - S wind 10 to 15 kt. Waves around 2 ft or less. A chance of rain early this morning, then rain late this morning and afternoon. Patchy fog this afternoon. Tonight - S wind 10 to 15 kt, becoming sw 15 to 20 kt after midnight. Waves around 2 ft or less. Showers likely, mainly in the evening. Wed - SW wind 10 to 15 kt, easing to 5 to 10 kt in the afternoon. Waves around 2 ft or less. A chance of showers in the morning. Wed night - S wind 5 to 10 kt. Waves around 2 ft or less. Thu - S wind 5 to 10 kt. Waves around 2 ft or less. Thu night - SW wind 5 to 10 kt, becoming S after midnight. Waves around 2 ft or less. Fri - S wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers. Fri night - SW wind 5 to 10 kt, backing to S after midnight. Waves around 2 ft or less. A chance of showers.Sat - S wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers. Sat night - W wind 5 to 10 kt, backing to S after midnight. Waves around 2 ft or less.

PZZ100 907 Am Pdt Tue May 21 2024
Synopsis for the northern and central washington coastal and inland waters - A seasonably strong frontal system crosses the waters today, with seas over the coastal waters approaching 15 ft Wednesday. Additional systems may develop and move across the region late this week.

FXUS66 KSEW 211604 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 904 AM PDT Tue May 21 2024

SYNOPSIS
A frontal system and trailing upper trough will lead to cooler and wet conditions across Western Washington today into Wednesday. Weak ridging aloft will produce drier and somewhat warmer weather on Thursday before another trough arrives Friday into Saturday for a return of cooler, unsettled conditions. A trend toward drier weather and more seasonable temperatures is possible early next week.

UPDATE
Rain continues to fall across the coast this morning. It is expected to continue and spread further inland into Puget Sound/Cascades this afternoon and evening. Inherited forecast is on track, no major changes to the morning forecast (other than a refreshed aviation/marine discussion).

HPR

SHORT TERM /TODAY THROUGH THURSDAY/
Clouds are increasing across the CWA early this morning ahead of a frontal system pushing southeastward down the British Columbia coast. Rain will reach coastal areas before sunrise then spread across most of the interior by late this morning. A cold front will sweep onshore late this afternoon with rain turning to showers this evening. QPF remains fairly high for late May with the much of the lowlands expected to pick up a half inch to an inch of rainfall. Post- frontal onshore flow ramps up this evening and this should get a convergence zone going for a few hours over Snohomish/King Counties.

The trailing upper trough shifts southeastward across the area during the day on Wednesday. This will keep showers and cool temperatures in the forecast across interior areas, though the focus for the precip should be mainly in the Cascades by Wednesday afternoon. Snow levels will dip to 3500 to 4000 feet in the Cascades, but impactful snowfall is not expected in the higher passes. Much like yesterday, upper ridging centered well offshore briefly noses in the area for drier and slightly warmer conditions on Thursday.

LONG TERM /FRIDAY THROUGH MONDAY/...Another trough is slated to drop into the region Friday into Saturday for more showers and cool temperatures. There are signs of a shift in the synoptic pattern thereafter, but how this ultimately will play out is uncertain.
Broad upper troughing over the western third of the country is expected to be replaced by a strengthening ridge early next week while a large trough takes up residence south of the Aleutians.
Of course, Western Washington is caught between the two. So, it's a question of which one will have the greater influence. The latest suite of global ensembles have weakly positive height anomalies over Western Washington Sunday into Memorial Day. At a minimum, this suggests that temperatures will return to near seasonal normals by the end of the holiday weekend with best precip chances retreating to the Olympic Peninsula. If football is a tale of two halves, the weekend weather may be much the same.
27

AVIATION
A mixed bag of MVFR/IFR with light rain. Conditions will improve by the evening with post-frontal convergence zone showers possible late Tuesday evening that could impact KPAE/KBFI/KSEA.
Lighter onshore flow will continue through the morning with stronger southerly flow 5-15 kt developing by the afternoon. West to southwest winds increasing to 10-20 kt by Tuesday evening with gusts to 25 kt mainly for KHQM/KCLM.

KSEA...IFR conditions this morning with light rain, rain is expected becoming heavier early this afternoon then ease by 22/04z.
Convergence zone is expected to stay north of KSEA/KBFI. S/SW flow will develop through the morning with winds 10-15 kt through the afternoon with gusts to 20 kt. Southwest winds are favored to stay elevated into Wed morning with lower/MVFR ceilings persisting.

AL/KC

MARINE
A strong frontal system will cross area waters today, boosting winds to SCA both offshore and through the Strait of Juan de Fuca through the evening and into Wednesday. Seas will rise above 10 ft across the offshore waters by Tuesday evening and continue rise to as high as 16 ft by Wednesday especially over the northern coastal zones. Waves will be steep with short period waves dominating. Another frontal system may pass through area waters on Friday, bringing elevated seas and breezy winds.

AL/KC

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...Small Craft Advisory from 8 PM this evening to 5 AM PDT Wednesday for Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca-West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 8 PM this evening to 5 PM PDT Wednesday for Coastal Waters From Cape Flattery To James Island Out 10 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

Small Craft Advisory from 5 PM this afternoon to 8 PM PDT Wednesday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm.

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Tacoma, Commencement Bay, Sitcum Waterway, Puget Sound, Washington (sub), Tide feet

Tacoma
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Tue -- 03:33 AM PDT     10.73 feet High Tide
Tue -- 04:15 AM PDT     Moonset
Tue -- 05:26 AM PDT     Sunrise
Tue -- 10:43 AM PDT     -0.20 feet Low Tide
Tue -- 05:58 PM PDT     10.67 feet High Tide
Tue -- 07:18 PM PDT     Moonrise
Tue -- 08:47 PM PDT     Sunset
Tue -- 10:56 PM PDT     6.58 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Tacoma, Commencement Bay, Washington, Tide feet

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