Herron Island, WA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Herron Island, WA

April 21, 2024 4:14 AM PDT (11:14 UTC) Change Location
Sunrise 6:09 AM   Sunset 8:10 PM
Moonrise 5:08 PM   Moonset 4:25 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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Marine Forecasts
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PZZ135 Puget Sound And Hood Canal- 207 Am Pdt Sun Apr 21 2024

Today - SW wind 5 to 15 kt. Wind waves 2 ft or less.

Tonight - N wind 5 to 15 kt. Wind waves 2 ft or less.

Mon - N wind 5 to 15 kt becoming 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft.

Mon night - N wind 5 to 15 kt. Wind waves 2 ft or less.

Tue - N wind 5 to 15 kt becoming nw to 10 kt in the afternoon. Wind waves 2 ft or less.

Tue night - SW wind 10 to 20 kt. Wind waves 1 to 3 ft.

Wed - S wind 5 to 15 kt becoming W to 10 kt. Wind waves 2 ft or less.

Thu - Light wind becoming sw to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.

PZZ100 207 Am Pdt Sun Apr 21 2024

Synopsis for the northern and central washington coastal and inland waters - Surface ridge builds into area waters today then shifts inland on Monday as thermally induced low pressure expands northward along the oregon coast. Another front is slated to reach the area Tuesday night into Wednesday with more acitivty possible later in the week.


7 Day Forecast for Marine Location Near Herron Island, WA
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Area Discussion for - Seattle, WA
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FXUS66 KSEW 211004 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 304 AM PDT Sun Apr 21 2024

SYNOPSIS
Scattered post-frontal showers across western Washington will gradually taper off to the Cascades through the day. High pressure will build across the Pacific Northwest, bringing warmer and drier conditions Monday and Tuesday. A weak cold front will cross the region Tuesday night with additional weak disturbances and upper level troughing leading to more unsettled conditions for the second half of the week.

SHORT TERM /TODAY THROUGH TUESDAY/
Much cooler today with high temperatures in the mid to upper 50s and scattered showers and mountain snow showers across the region. Mesoscale guidance continues to hone in on convergence banding, staying confined to Whatcom, Skagit, and far northwestern Snohomish Counties this morning, then pushing further south towards the I-90 corridor as an afternoon push through the Strait of Juan de Fuca brings northerly winds southward across Snohomish and northern King Counties. Can't rule out a rumble or two of thunder with SBCAPE values between 100 and 150 J/kg, though greatest chances will be across the northwestern Olympic Peninsula. Total rainfall amounts stay less than a tenth of an inch for most locations, save for under heavier showers and downpours that may form in convergence banding through the afternoon.

Chilly low temperatures tonight with patchy frost possible, especially in rural areas with low temperatures in the low 30s.
Greatest chances for lows of 35 degrees or lower is through the Southwest Interior and East Puget Sound Lowlands (70% chance flow lows of 35 degrees or colder). This, combined with light winds, will lead to frost formation tonight. A Frost Advisory has been issued from 11 PM this evening through 8 AM Monday morning for these areas. Cover or bring sensitive plants indoors.

High pressure will build onshore over the region Monday and Tuesday with high temperatures warming into the low 60s Monday and into the upper 60s to near 70 by Tuesday as the ridge moves directly overhead. Offshore flow looks to develop late Monday into Tuesday morning as surface high pressure moves further inland and a thermal trough develops along the coast of the Pacific Northwest. This will likely lead to another period of low relative humidity values with a 30% chance for min RH values below 35% Monday and a 45% chance for Tuesday along and south of I-90.

LONG TERM /WEDNESDAY THROUGH SATURDAY/
A weakening cold front will cross the Pacific Northwest Tuesday night, quickly shifting well inland by Wednesday. Precipitation amounts look to be on the lighter side once again. Long range ensemble guidance continues to deepen a longer wave trough across the western CONUS with ridging across the Mississippi River Valley Thursday and Friday. Main disagreement appears to be over how quickly a cutoff upper low across Southern California and the Desert Southwest merges with upper level energy with Wednesday's system. This will affect how quickly an upper-level ridge builds across the Pacific Northwest through the weekend. The consensus Thursday through Saturday is for near to slightly below normal temperatures with scattered showers and mountain snow nearly each day, though likely non- impactful amounts.

Davis

AVIATION
Currently west-southwest flow aloft before turning northwesterly tonight as an upper-ridge looms offshore. Low-level onshore flow will weaken as the morning progress. But scattered showers are to remain throughout the day with VFR cigs. A convergence zone is forecasted to form over Puget Sound in the afternoon before gradually fizzling out overnight. Localized MVFR cigs are possible with this feature for airfields such as KPAE.
Breezy S to SW winds again today before decreasing overnight. More VFR is expected into Sunday.

KSEA...VFR conditions so far this morning with post-frontal showers in the vicinity. Cigs are to remain mostly VFR throughout the TAF period but a developing convergence zone between 20Z Sunday and 00Z Monday could influence things a bit. S/SW surface winds between 8 to 12 kt today before veering to the N/NW later this evening and decreasing in magnitude.

McMillian

MARINE
Small craft advisories over the coastal waters and west strait will be allowed to expire as the morning progress.
However, surface high pressure looks to build over area waters today keeping SCA westerlies through Strait of Juan de Fuca through tonight. The surface ridge shifts inland on Monday as a thermal trough expands northward along the Oregon coast. This will turn the flow more northerly, possibly near advisory levels across southern portions of the coastal waters. An additional front is on track to enter the region Tuesday night into Wednesday with more activity possible later in the week.

Seas may briefly get above 10 feet over portions of the outer coastal waters today before subsiding below that threshold for the remainder of the forecast period.

27

HYDROLOGY
No river flooding is expected over the next 7 days.

SEW WATCHES/WARNINGS/ADVISORIES
WA...Frost Advisory from 11 PM this evening to 8 AM PDT Monday for East Puget Sound Lowlands-Hood Canal Area-Lower Chehalis Valley Area-Southwest Interior.

PZ...Small Craft Advisory until 11 AM PDT this morning 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-West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until midnight PDT tonight for Central U.S.
Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
TCMW1 - 9446482 - Tacoma Met, WA 28 mi56 min S 8G14 46°F
TCNW1 - 9446484 - Tacoma, WA 28 mi56 min 51°F30.35
BMTW1 30 mi56 min 30.32
WPOW1 - West Point, WA 42 mi74 min SSW 11G13 46°F 30.3040°F


Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KSHN SANDERSON FIELD,WA 11 sm21 minW 0310 smClear39°F37°F93%30.31
KOLM OLYMPIA RGNL,WA 16 sm20 mincalm10 smPartly Cloudy41°F37°F87%30.35
KTIW TACOMA NARROWS,WA 20 sm21 minSSW 0810 smClear45°F37°F76%30.32
KGRF GRAY AAF (JOINT BASE LEWISMCCHORD),WA 21 sm79 minSE 0710 smA Few Clouds43°F37°F81%30.29
KPWT BREMERTON NTL,WA 22 sm18 mincalm10 smClear36°F36°F100%30.31
Link to 5 minute data for KSHN


Wind History from SHN
(wind in knots)
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Tide / Current for Arcadia, Washington
   
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Arcadia
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Sun -- 05:10 AM PDT     13.64 feet High Tide
Sun -- 05:25 AM PDT     Moonset
Sun -- 06:11 AM PDT     Sunrise
Sun -- 11:51 AM PDT     2.42 feet Low Tide
Sun -- 05:52 PM PDT     12.05 feet High Tide
Sun -- 06:07 PM PDT     Moonrise
Sun -- 08:09 PM PDT     Sunset
Sun -- 11:43 PM PDT     4.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Arcadia, Washington, Tide feet
12
am
4
1
am
5.7
2
am
8.2
3
am
10.8
4
am
12.8
5
am
13.6
6
am
13.3
7
am
11.9
8
am
9.6
9
am
6.9
10
am
4.5
11
am
2.9
12
pm
2.4
1
pm
3.3
2
pm
5.3
3
pm
7.8
4
pm
10.1
5
pm
11.6
6
pm
12
7
pm
11.4
8
pm
9.9
9
pm
7.9
10
pm
5.8
11
pm
4.4



Tide / Current for Hammersley Inlet, 0.8 miles E of Libby Pt, Washington Current
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Hammersley Inlet
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Sun -- 12:07 AM PDT     0.01 knots Slack
Sun -- 02:32 AM PDT     1.99 knots Max Flood
Sun -- 05:22 AM PDT     -0.01 knots Slack
Sun -- 05:25 AM PDT     Moonset
Sun -- 06:11 AM PDT     Sunrise
Sun -- 09:54 AM PDT     -2.55 knots Max Ebb
Sun -- 12:39 PM PDT     0.01 knots Slack
Sun -- 03:02 PM PDT     2.02 knots Max Flood
Sun -- 05:52 PM PDT     -0.00 knots Slack
Sun -- 06:07 PM PDT     Moonrise
Sun -- 08:10 PM PDT     Sunset
Sun -- 10:13 PM PDT     -2.26 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Hammersley Inlet, 0.8 miles E of Libby Pt, Washington Current, knots
12
am
-0.2
1
am
1.1
2
am
1.9
3
am
1.9
4
am
1.4
5
am
0.4
6
am
-0.6
7
am
-1.4
8
am
-2.1
9
am
-2.4
10
am
-2.5
11
am
-2.2
12
pm
-1
1
pm
0.5
2
pm
1.6
3
pm
2
4
pm
1.7
5
pm
0.9
6
pm
-0.1
7
pm
-1
8
pm
-1.6
9
pm
-2.1
10
pm
-2.2
11
pm
-2.1




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Langley,Hill/Gray,Harbor,WA



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