Sunday, April18, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Black Diamond, WA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:11AMSunset 8:03PM Sunday April 18, 2021 2:39 PM PDT (21:39 UTC) Moonrise 9:04AMMoonset 12:54AM Illumination 44% Phase: First Quarter Moon; Moon at 7 days in cycle
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.
Marine Forecasts
    EDIT      (on/off)   Help
PZZ135 Puget Sound And Hood Canal- 905 Am Pdt Sun Apr 18 2021
Today..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Tonight..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Mon..NE wind 5 to 15 kt becoming N in the afternoon. Wind waves 2 ft or less.
Mon night..N wind to 10 kt becoming ne after midnight. Wind waves 1 ft or less.
Tue..N wind to 10 kt becoming 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tue night..N wind to 10 kt becoming nw after midnight. Wind waves 1 ft or less.
Wed..Light wind becoming variable to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
Thu..Light wind becoming sw to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 905 Am Pdt Sun Apr 18 2021
Synopsis for the northern and central washington coastal and inland waters..Surface high pressure over the area this weekend with light offshore flow. Onshore flow is expected to develop late Monday and persist into mid week.


7 Day Forecast for Marine Location Near Black Diamond, WA
   Hourly   EDIT   Help
location: 47.3, -122     debug


Area Discussion for - Seattle, WA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KSEW 182129 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 230 PM PDT Sun Apr 18 2021

SYNOPSIS. Onshore flow will trigger a gradual cooling trend starting Monday. As an upper level ridge remains in place, dry conditions will persist although systems passing near the area will allow for an increase in clouds over the first half of the week. A pattern change is still expected for the end of the week with a return to cooler and wetter conditions.

SHORT TERM /TONIGHT THROUGH WEDNESDAY/. Clear skies remain in place over much of W WA this afternoon. Temps around the area not deviating too much from where they were 24 hours ago with some locations running a degree or two cooler, others a degree or two warmer. Coastal locations proving to be an exception though running anywhere from 9 to 18 degrees cooler thanks to the change to onshore flow. Not seeing much of an eastward push just yet, but that will be discussed in a bit.

Upper level ridging remains the main headline for the short term period, keeping dry conditions in place. The aforementioned transition to onshore flow at the surface will result in a more widespread impact on temperatures Monday as temps fall to around 60 along the coast and into the upper 60s to around 70 for the interior lowlands.

A shortwave trough evolves into a small closed low Monday night into Tuesday but is not expected to make much of an impact to W WA given both its sharp SE trajectory taking it south of the area as well as the fact there is very little moisture associated with it. The largest expected impact will be an increase in cloud cover over the western half of the CWA into Tuesday morning. Upper level ridging rebuilds over the nearshore coastal waters, clearing these clouds out Tuesday afternoon although the gradual cooling will remain in place as temps will be be a degree or two cooler than Monday. This ridge stays in place Wednesday, however deterministic models show an interesting feature . although the details differ. The GFS points to a weak upper level low coming down the Pacific ridge just off the WA coast but no real moisture with it while the ECMWF shows a similar feature but this passing to the north of the area with potential impacts east of the Cascades. Ensembles register a bit of a blip to represent the prospects of these solutions however, proving them to be more outliers and not really warranting inclusion in the forecast at this time. 18

LONG TERM /THURSDAY THROUGH SATURDAY/. Models seem to have backed off on the timing for the general pattern change over W WA a little bit. Deterministic models hinted at this 24 hours ago and ensembles look to be following that trend for now, keeping upper level riding in place for Thursday. The ridge finally starts to break down Thursday evening as a system moving south over the ridge may bring some showers to the northern two-thirds of the Cascades. The ridge continues to diminish and move eastward throughout the day Friday, setting W WA up for an upper level low to bring rain back to the area for the upcoming weekend.

Temps during this time will continue to cool, with mid 60s expected for the interior lowlands . upper 50s along the coast . for both Thursday and Friday and further cooling on Saturday . mid 50s along the coast, only around 60 for the interior lowlands. 18

AVIATION. Increasing northwesterly flow this afternoon, persisting through the period. VFR through the period at all TAF sites, with the exception of KHQM where MVFR to IFR stratus will build in over the terminal later this evening through Monday morning. CIGs generally between 500 and 1000 feet here in this time period. Prevailing winds generally AOB 10 kts at all sites during the day Monday.

KSEA . VFR through the period. Northwesterly 4 to 7 kts through the remainder of the afternoon, becoming northerly this evening. Winds will become southeasterly between 12 and 15Z Monday morning, with speeds remaining below 10 kts.

Pullin

MARINE. With the exception of spotty advisory level winds across the Northern Inland waters and in the west entrance and adjacent near-shore waters this evening through Monday morning, quiet weather and calm seas will prevail through much of the week. Predominantly offshore flow will transition to onshore late Monday into Tuesday and will persist through the end of the period.

Pullin

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

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory from 11 PM this evening to 11 AM PDT Monday for Coastal Waters From Cape Flattery To James Island Out 10 Nm-West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 8 PM this evening to 11 AM PDT Monday for Northern Inland Waters Including The San Juan Islands.



www.weather.gov/seattle


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 22 mi58 min W 4.1 G 6
TCNW1 - 9446484 - Tacoma, WA 22 mi52 min 69°F 49°F1021.1 hPa
WPOW1 - West Point, WA 34 mi40 min Calm G 1 65°F 1020.6 hPa (-1.3)47°F

Wind History for Tacoma MET, WA
(wind in knots)    EDIT      (on/off)   Help
3
PM
-12
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last
24hr
W7
W9
W4
W3
W7
W8
W10
NE1
N2
G5
SW3
--
--
E3
E3
--
--
SE3
SE2
NW4
NW5
NW2
W7
NW3
1 day
ago
N11
G14
N13
G16
N15
N16
N16
N16
NE12
G15
NW8
N3
G6
NW4
N1
N3
E1
SE3
E2
NE1
SE2
E1
N1
NW2
W8
W9
W9
W8
2 days
ago
N14
N13
G16
N14
G18
N16
G20
N17
N16
E3
G8
W5
NW3
W2
SW1
E1
SE2
E2
E1
--
SE2
NE2
NW2
NW4
W8
W12
NW9
G13
N10
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA18 mi47 minN 510.00 miFair74°F44°F34%1020.5 hPa
Seattle, Seattle-Tacoma International Airport, WA19 mi47 minSW 510.00 miA Few Clouds74°F37°F26%1021.2 hPa
Pierce County-Thun Field, WA20 mi65 minVar 610.00 miFair77°F34°F21%1021 hPa
Boeing Field - King County International Airport, WA22 mi47 minVar 310.00 miFair73°F40°F30%1020.1 hPa

Link to 5 minute data for KRNT

Wind History from RNT (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hrN7N5N4NW4NW3N4CalmCalmCalmSE3CalmCalmCalmCalmS3CalmCalmCalmCalmS4N6N5N4N5
1 day agoNW11NW11NW12N8NW11N5N6N6N4CalmCalmCalmCalmCalmCalmCalmCalmCalmN3N4N5N6N6N5
2 days ago--NW13N10NW12NW11N5N3N3CalmCalmCalmCalmCalmCalmCalm--CalmCalmN4N5NW9NW10NW8NW9

Tide / Current Tables for Des Moines, Washington
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Des Moines
Click for Map
Sun -- 01:56 AM PDT     Moonset
Sun -- 04:14 AM PDT     7.39 feet Low Tide
Sun -- 06:14 AM PDT     Sunrise
Sun -- 08:30 AM PDT     9.21 feet High Tide
Sun -- 10:04 AM PDT     Moonrise
Sun -- 04:09 PM PDT     0.36 feet Low Tide
Sun -- 08:03 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
10.49.78.77.87.47.68.18.79.19.18.67.45.842.310.40.723.85.87.89.510.5

Tide / Current Tables for Tacoma, Commencement Bay, Washington
   EDIT      (on/off)   Help   One Week of Data
Tacoma
Click for Map
Sun -- 01:56 AM PDT     Moonset
Sun -- 04:14 AM PDT     7.39 feet Low Tide
Sun -- 06:15 AM PDT     Sunrise
Sun -- 08:32 AM PDT     9.30 feet High Tide
Sun -- 10:06 AM PDT     Moonrise
Sun -- 04:09 PM PDT     0.36 feet Low Tide
Sun -- 08:03 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
10.59.88.87.97.47.68.18.89.29.28.77.55.94.12.410.40.723.85.97.99.510.5

Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of PacificNorthwest    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.