Wednesday, July8, 2020
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Marine Weather and Tides
Raft Island, WA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:22AMSunset 9:08PM Wednesday July 8, 2020 12:31 AM PDT (07:31 UTC) Moonrise 10:42PMMoonset 7:59AM Illumination 92% Phase: Waning Gibbous; Moon at 18 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
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PZZ135 Puget Sound And Hood Canal- 719 Pm Pdt Tue Jul 7 2020
Tonight..NW wind to 10 kt becoming S after midnight. Wind waves 1 ft or less. A chance of rain.
Wed..S wind to 10 kt. Wind waves 1 ft or less. A chance of rain in the morning then a slight chance of rain in the afternoon.
Wed night..Variable wind to 10 kt becoming N after midnight. Wind waves 1 ft or less. A slight chance of rain in the evening then a chance of rain after midnight.
Thu..S wind to 10 kt becoming nw in the afternoon. Wind waves 1 ft or less.
Thu night..NW wind 5 to 15 kt becoming N after midnight. Wind waves 2 ft or less.
Fri..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Fri night..Light wind. Wind waves less than 1 ft.
Sat..SW wind to 10 kt. Wind waves 1 ft or less.
Sun..SW wind to 10 kt becoming nw. Wind waves 1 ft or less.
PZZ100 719 Pm Pdt Tue Jul 7 2020
Synopsis for the northern and central washington coastal and inland waters..Weak onshore flow will continue into the upcoming weekend as high pressure remains centered offshore.


7 Day Forecast for Marine Location Near Raft Island, WA
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location: 47.33, -122.67     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 080324 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 824 PM PDT Tue Jul 7 2020

UPDATE. Clouds and some sunshine this evening across Western Washington as the system slides east of the area. A few showers currently across the South Sound with weak convergence activity across southern King and northern Pierce Counties. Light rain possible in this area into tonight with drier weather on Wednesday as weak ridging builds into the area.

SYNOPSIS. A few showers around into tonight as an upper disturbance departs the area. After a short break on Wednesday for drier weather, additional disturbances will rotate across the region Thursday and again over the weekend, maintaining cooler than normal conditions and a few rounds of precipitation through early next week.

SHORT TERM /TONIGHT THROUGH FRIDAY/. Latest satellite imagery depicts an upper trough axis aligned across the state this afternoon, with a persistent cloud deck and scattered showers. Per latest NWS radar imagery, most showers are organized either across the southern/western parts of the forecast area or in a region of developing convergence across the northern and central Puget Sound. Expect to see the atmosphere begin to dry out in the mid- levels later tonight and into Wednesday as a weak upper ridge of high pressure pushes into the region. This should bring showers largely to an end for most locations, though weak onshore flow will continue tonight and a lingering Puget Sound Convergence Zone may develop and persist through much of the night. Elsewhere, the weak onshore flow should serve to maintain a relatively solid lower cloud deck. For some areas that do begin to scatter out, there may be brief a window for localized fog to develop in the more favored locations toward daybreak, but many locations should instead maintain a more solid cloud deck. With the drying trend and weak onshore gradients into Wednesday, expect morning clouds to eventually give way to increasingly sunny skies by the afternoon. The slightly warmer air mass and decreasing sky cover should allow temperatures to rebound into the lower 70s for the interior lowlands.

However, the break in the weather looks be short-lived as the next upper trough quickly approaches Western Washington late Wednesday. Expect to see an increase in mid-level clouds streaming into the region by Wednesday evening, with some guidance indicating the leading edge of rain reaching the coast during the late afternoon or early evening hours, before advancing inland overnight and into early Thursday. This will likely yield another cool and damp day across the region on Thursday, with rain eventually tapering off from southwest to northeast later in the day. Much of the interior lowlands may be a bit shadowed in the predominantly southwesterly flow, but precipitation amounts up to around half an inch are possible in the more favored terrain of the Olympics and Cascades. Behind this system, another round of higher pressure and warmer temperatures looks likely for Friday with plenty of sun after morning clouds. Of course, the rather progressive weather pattern continues with yet another disturbance quickly following.

Cullen

LONG TERM /SATURDAY THROUGH TUESDAY/. The next weather system will then approach the region over the weekend. Current guidance suggests that this low pressure system may be a bit stronger and better organized that recent systems, with a slightly slower trend in recent model runs. However, there is a significant bit of spread in guidance, likely partially due to the potential influence of a strengthening ridge across the southwestern U.S. Nonetheless, the front is expected to push across Western Washington over the weekend with another round of increasing clouds and precipitation chances. Onshore flow then follows into early next week, with at least some chance of showers (especially across the higher terrain and near the coast), but flow aloft likely becomes more zonal with temperatures returning to near or slightly below normal values closer to midweek.

Cullen

AVIATION. Northwesterly flow aloft will transition westerly on Wednesday with weak ridging over the area. VFR cigs for most this evening with MVFR along the coast and across portions of the central and southern Puget Sound with weak convergence activity. MVFR late tonight through Wednesday morning with onshore flow and stratus. VFR cigs expected Wednesday afternoon with more clearing through the day. Winds south across the South Sound and light northerly across the central Sound into tonight. South winds across the area for Wednesday 4 to 8 knots.

KSEA . VFR cigs this evening with MVFR at times with convergence activity around the central Puget Sound. Drier weather late tonight through Wednesday. MVFR cigs late tonight through Wednesday morning with VFR in the afternoon. Light north winds tonight will transition south 4 to 8 knots Wednesday morning. JD

MARINE. Onshore flow through the week with mainly light winds as a few systems move through the area. Small Craft Advisory winds this evening into early tonight for the central and eastern portions of the Strait of Juan de Fuca. SCA winds possible at times through the Strait of Juan de Fuca this week with the onshore flow. JD

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

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory until 1 AM PDT Wednesday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46121 5 mi27 min 1.9 59°F 1019.8 hPa57°F
TCMW1 - 9446482 - Tacoma Met, WA 14 mi43 min NNW 6 G 8
TCNW1 - 9446484 - Tacoma, WA 14 mi43 min 54°F1020.3 hPa
WPOW1 - West Point, WA 26 mi31 min N 4.1 G 4.1 56°F 1019.9 hPa (+0.7)55°F
46120 33 mi30 min 56°F 1018.7 hPa52°F
46125 40 mi23 min 54°F 1018.9 hPa51°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tacoma, Tacoma Narrows Airport, WA6 mi38 minN 010.00 miOvercast56°F55°F97%1020 hPa
Bremerton, Bremerton National Airport, WA12 mi35 minN 010.00 miOvercast57°F54°F90%1020.4 hPa
Tacoma / McChord Air Force Base, WA15 mi33 minWSW 710.00 miOvercast60°F51°F73%1020.3 hPa
Fort Lewis / Gray U. S. Army Airfield, WA17 mi33 minS 510.00 miA Few Clouds58°F57°F99%1020 hPa
Seattle, Seattle-Tacoma International Airport, WA21 mi38 minSSW 310.00 miOvercast59°F55°F90%1020.3 hPa
Boeing Field - King County International Airport, WA24 mi38 minN 010.00 miOvercast61°F54°F78%1019.4 hPa

Link to 5 minute data for KTIW

Wind History from TIW (wind in knots)
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S11SW10S10S8S9S10S7N9NE3NW3CalmCalmCalm
1 day agoS5S5SW5SW3S5SW5SW3S5S66S75W76W9SW9SW8SW7SW8SW9
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2 days agoCalmCalmCalmN3CalmCalmN3Calm44W345W663NW6W5W33W6W4W4SW3

Tide / Current Tables for Horsehead Bay, Carr Inlet, Puget Sound, Washington
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Horsehead Bay
Click for Map
Wed -- 02:54 AM PDT     6.89 feet Low Tide
Wed -- 05:23 AM PDT     Sunrise
Wed -- 07:22 AM PDT     11.37 feet High Tide
Wed -- 08:59 AM PDT     Moonset
Wed -- 02:34 PM PDT     -1.31 feet Low Tide
Wed -- 09:07 PM PDT     Sunset
Wed -- 09:57 PM PDT     14.43 feet High Tide
Wed -- 11:41 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.98.87.36.97.58.910.311.311.210.18.25.830.5-1.1-1.20.32.96.19.512.213.914.413.8

Tide / Current Tables for Hale Passage, West end, Washington Current
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Hale Passage
Click for Map
Wed -- 03:14 AM PDT     0.01 knots Slack
Wed -- 04:12 AM PDT     0.82 knots Max Flood
Wed -- 05:23 AM PDT     Sunrise
Wed -- 05:29 AM PDT     -0.01 knots Slack
Wed -- 08:59 AM PDT     Moonset
Wed -- 10:30 AM PDT     -2.25 knots Max Ebb
Wed -- 03:01 PM PDT     0.01 knots Slack
Wed -- 04:57 PM PDT     1.85 knots Max Flood
Wed -- 07:46 PM PDT     -0.00 knots Slack
Wed -- 09:07 PM PDT     Sunset
Wed -- 11:41 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.4-1.2-0.8-0.20.80.5-0.3-0.9-1.5-2-2.2-2.2-2-1.6-0.9-01.31.81.50.7-0.1-0.7-1.1-1.3

Weather Map
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wmap_P
GEOS Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (3,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.