Tuesday, April7, 2020
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Marine Weather and Tides
Markham, 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 6:39AMSunset 7:55PM Tuesday April 7, 2020 8:04 PM PDT (03:04 UTC) Moonrise 6:38PMMoonset 5:59AM Illumination 100% Phase: Full Moon; Moon at 15 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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PZZ110 Grays harbor bar- 250 pm pdt Tue apr 7 2020 combined seas 5 to 7 feet. Bar conditions light to moderate. Maximum ebb currents will occur around 5 pm today and 530 am Wednesday morning. The evening ebb will be strong and Wednesday morning ebb will be very strong.
PZZ100 250 Pm Pdt Tue Apr 7 2020
Synopsis for the northern and central washington coastal and inland waters..Light onshore flow today will turn northerly tonight through Wednesday. Onshore flow will return late in the week as a series of weak systems affect the area.


7 Day Forecast for Marine Location Near Markham, WA
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location: 46.89, -124     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 072229 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 329 PM PDT Tue Apr 7 2020

SYNOPSIS. Upper level ridging will remain the dominant weather feature across the region over the next few days, keeping Western Washington dry and allowing temperatures to warm through Thursday. Chances of rain will increase over the weekend as a weak system skirts past the area.

SHORT TERM /TONIGHT THROUGH FRIDAY/. Recent satellite imagery depicts the morning stratus deck gradually scattering out this afternoon, with most areas seeing some afternoon sunshine. Temperatures across the region at this time of writing are generally around the low to mid 50s. With flow turning more northerly and slightly offshore this evening, expect skies to remain mostly clear and for overnight lows to be in the mid to upper 30s.

Western Washington will remain dry as upper level ridging remains the dominant feature across the region over the next several days. Temperatures will gradually warm a few degrees Wednesday and Thursday, with Thursday still looking to be the warmest day overall--with temps climbing into the mid 60s across much of the lowlands.

LONG TERM /SATURDAY THROUGH TUESDAY/. Deterministic models are in slightly better agreement with a weak system skirting past the region on Saturday. Thus, have kept slight chance of POPs in the forecast for now. Sunday and Monday are trending drier as the upper level ridge axis offshore shifts further eastward over the region. Western Washington could see another quick shot of precipitation on near midweek as another weak system traverses the area. However, guidance continues to have difficulty resolving this feature at this time, so will have to see how newer runs trend in the coming days. SB

AVIATION. Northwest flow aloft continues across Western Washington today as upper ridging remains centered well offshore. Low level flow will gradually turn northerly this evening and continue into Wednesday. Just some flat scattered cumulus and a few high clouds this evening with VFR continuing across the region through Wednesday as high pressure aloft remains in control.

KSEA . VFR expected through Wednesday. Surface winds light and variable becoming N-NE less than 10 knots by this evening through much of Wednesday. 27

MARINE. Onshore flow weakening today and turning northerly through Wednesday. Onshore flow returns late in the week as a series of weak systems brush the area. Diurnal increases in onshore flow should be enough for advisory level westerlies in the Strait of Juan de Fuca late Thursday and again Friday. Apart from those, no other significant winds are expected across area waters in the week ahead.

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

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . None.

www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 6 mi88 min NNW 12 G 14 48°F 50°F1025.1 hPa
46211 - Grays Harbor, WA (036) 13 mi64 min 49°F4 ft
TOKW1 - 9440910 - Toke Point, WA 13 mi70 min NNW 8 G 12 49°F 53°F1025.2 hPa
46243 - Clatsop Spit, OR - 162 47 mi64 min 49°F4 ft
ASTO3 - 9439040 - Astoria, OR 49 mi64 min NNW 7 G 8.9 49°F 50°F1024.3 hPa (+0.0)

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA6 mi71 minWNW 1010.00 miFair49°F41°F74%1025 hPa

Link to 5 minute data for KHQM

Wind History from HQM (wind in knots)
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Last 24hrW6W6W5W8NW8W5W4W5W4NW4NW4NW4NW56W7W10W14W13W12W11W11W12W10W4
1 day agoCalmN4NE4E7NE4N3CalmCalmCalmE4E5E4CalmSE5CalmSW4W12W13W13W13W17NW11NW11NW8
2 days agoE5SE7NE3E5E8E7E9E9E7E10E10NE6E7E9E9E8E7SE6W9NW8NW10N10N9N9

Tide / Current Tables for Markham, Grays Harbor, Washington
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Markham
Click for Map
Tue -- 01:08 AM PDT     9.94 feet High Tide
Tue -- 06:42 AM PDT     Sunrise
Tue -- 06:58 AM PDT     Moonset
Tue -- 07:06 AM PDT     0.06 feet Low Tide
Tue -- 01:24 PM PDT     10.13 feet High Tide
Tue -- 07:24 PM PDT     -0.30 feet Low Tide
Tue -- 07:35 PM PDT     Full Moon
Tue -- 07:38 PM PDT     Moonrise
Tue -- 07:54 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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9.29.99.585.83.41.10.10.72.64.97.29109.98.66.43.91.5-0.101.74.16.5

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Tue -- 01:25 AM PDT     -0.00 knots Slack
Tue -- 04:44 AM PDT     -3.79 knots Max Ebb
Tue -- 06:42 AM PDT     Sunrise
Tue -- 06:58 AM PDT     Moonset
Tue -- 07:49 AM PDT     0.01 knots Slack
Tue -- 10:55 AM PDT     2.81 knots Max Flood
Tue -- 01:47 PM PDT     -0.00 knots Slack
Tue -- 05:03 PM PDT     -3.70 knots Max Ebb
Tue -- 07:35 PM PDT     Full Moon
Tue -- 07:39 PM PDT     Moonrise
Tue -- 07:54 PM PDT     Sunset
Tue -- 08:02 PM PDT     0.01 knots Slack
Tue -- 11:07 PM PDT     3.03 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.20.8-1.1-2.6-3.6-3.8-3-1.40.31.72.62.82.51.4-0.4-2.1-3.3-3.7-3.3-1.9-0.11.52.63

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 (23,6,7,8)
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Ground Weather Radar Station Portland, OR
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weather_mapweather_map weather_map

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Disclaimer:
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.