Tuesday, January21, 2020
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Marine Weather and Tides
Blaine, 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 7:53AMSunset 4:51PM Tuesday January 21, 2020 11:33 AM PST (19:33 UTC) Moonrise 5:23AMMoonset 1:58PM Illumination 12% Phase: Waning Crescent; Moon at 26 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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PZZ133 Northern Inland Waters Including The San Juan Islands- 840 Am Pst Tue Jan 21 2020
.gale warning in effect until 7 pm pst this evening...
Today..SE wind 25 to 35 kt. Wind waves 4 to 6 ft. Showers in the morning then showers likely in the afternoon.
Tonight..S wind 20 to 30 kt easing to 10 to 20 kt after midnight. Wind waves 3 to 5 ft subsiding to 1 to 3 ft after midnight. Rain in the evening then rain likely after midnight.
Wed..SE wind 15 to 25 kt. Wind waves 2 to 4 ft. A chance of rain in the morning then rain in the afternoon.
Wed night..SE wind 15 to 25 kt. Wind waves 2 to 4 ft.
Thu..SE wind 15 to 25 kt. Wind waves 2 to 4 ft.
Thu night..SE wind 15 to 25 kt. Wind waves 2 to 4 ft.
Fri..S wind 15 to 25 kt becoming se to 10 kt. Wind waves 2 to 4 ft subsiding to 1 ft or less.
Sat..SE wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 840 Am Pst Tue Jan 21 2020
Synopsis for the northern and central washington coastal and inland waters..A frontal system will move the area today. The weather will stay active Wednesday and Thursday with additional weather systems affecting the area.


7 Day Forecast for Marine Location Near Blaine, WA
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location: 49, -122.77     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 211646 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 846 AM PST Tue Jan 21 2020

SYNOPSIS. Wet weather for the rest of the week into the weekend as a series of systems moves through the area. Snow levels near passes today into Wednesday will rise steadily later Wednesday into Thursday. Periods of heavy rain will lead to rising rivers and the potential for river flooding later this week.

SHORT TERM /TODAY THROUGH THURSDAY/. A strong front will move inland this morning for more showers and thunderstorms (along the coast), heavy mountain snow and gusty winds. Most of the focus this morning is on a strong line of showers/thunderstorms along the coast. This area remains active where shear and instability are the greatest. Gusty winds to 40 mph expected in the North Interior (especially Admiralty Inlet Area) with the frontal passage today. Winds will ease this afternoon. Up in the mountains, heavy snow will fall in the Olympics and Cascades with snow levels around 3000 feet. Heaviest snow will be in the North Cascades at Mount Baker with 1-2 feet expected through tonight. Snoqualmie Pass may see a rain/snow mix tonight as winds change to westerly. 33

Previous discussion . Hi-res guidance indicates enough instability across the coastal waters and immediately inland to continue mention of thunderstorms this morning through early afternoon. Any convection that fires will be capable of heavy downpours and small hail. Activity should wane later this afternoon as trough axis passes to the west. Current forecast aligns well with Storm Prediction Center general thunder outlook.

Little noticeable break in the action during the day Wednesday into Wednesday night as warm front associated with our next system pushes north across the area. Cold front will follow on Thursday with another round of breezy winds. As warm, moist air pushes in, snow levels will rise steadily and be above pass levels by Wednesday evening. A few more inches likely for pass levels though at the onset. Otherwise, from here on out, heavy rain up to around 5000-6000 feet becomes the main concern. With this system, heaviest amounts will fall over the Olympics and Cascades with a bit of a rain shadow across the northern inland waters and portions of the Sound. Rivers flowing off the mountains will see rapid rises and may begin to see minor flooding as early as Thursday night into Friday morning. See hydrology section below for details.

CEO

LONG TERM /FRIDAY THROUGH MONDAY/. Previous discussion . Additional systems arrive Friday into the weekend. Past Friday, uncertainty rises in the details, especially with precipitation amounts and breaks in between systems. Entire period likely won't be a washout but flooding concerns will continue as additional rainfall will enhance river rises. Temperatures will remain on the mild side with afternoon highs in the lowlands topping out in the upper 40s to low 50s.

CEO

AVIATION. An organized frontal boundary will continue to slide eastward across the area through the day today. Ahead of the boundary, most ceilings are VFR as of 16z. Closer to the frontal boundary and in its wake, MVFR cigs are present, and most so in the vicinity of a long band of convection accompanying the front. As the convection moves east, expect the potential for VFR cigs to drop to MVFR. Will have to watch trends into the afternoon but will keep VFR ahead of the front. Any convective activity will also have the potential to bring down visibility for a brief period of time. South wind sustained 10-15kts with gusts 20-30kts through much of this TAF cycle. Unsettled weather is expected to continue even beyond the current TAF period.

KSEA . VFR ceilings should prevail most of the morning, with a greater potential for MVFR behind the passage of a cold front this afternoon. Any convective shower activity today could briefly reduce visibility. South wind 10-15kts with gusts 20-25kts through the evening.

Kovacik

MARINE. Current headlines remain unchanged. The big story this morning is the strong band of convection that moved onshore the northern Washington coast earlier this morning, and additional convection that continues to moves northward from the offshore waters of Oregon. A Special Marine Warning was issued for potential waterspout development off the southern coast of Washington. This immediate threat has since dissipated but given 0-1km helicity values of over 100 m2/s2, the threat will continue for the next hour or two. Aside from waterspouts, strong winds, associated with convective activity, will continue until the band of convection moves further inland. Previous discussion follows:

A front will move through through today with gales expected for the coastal waters and possibly the Central and Eastern Strait of Juan de Fuca. Gale Warning issued for the Northern Inland Waters through this afternoon with strong southerly winds. Small Craft Advisory level winds elsewhere with the front. Swells will increase through today with swells 15-21 feet by this afternoon. Active weather through this week as multiple systems move across the waters. SCA winds and gales possible with the systems.

Kovacik/JD

HYDROLOGY. A period of warming, rising snow levels, and heavy rain in the mountains will force sharp rises on the rivers flowing off the Olympics and Cascades in western Washington. Snow levels will rise to around 5,000 to 6,000 feet with 3 to 8 inches of rain in the mountains Wednesday through early Friday. Minor flooding is possible on several rivers as a result. Rivers may be flowing high through the weekend.

SEW WATCHES/WARNINGS/ADVISORIES. WA . Winter Weather Advisory until 4 AM PST Wednesday for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties-Olympics.

Flood Watch from 4 PM PST this afternoon through late Wednesday night for Hood Canal Area-Lower Chehalis Valley Area- Olympics.

Winter Storm Warning until 4 AM PST Wednesday for Cascades of Whatcom and Skagit Counties.

PZ . Small Craft Advisory until 10 AM PST Wednesday for Grays Harbor Bar.

Small Craft Advisory from 4 PM this afternoon to 4 AM PST Wednesday 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.

Gale Warning until 4 PM PST this afternoon 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.

Gale Warning until 7 PM PST this evening for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory until 4 PM PST this afternoon for West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 4 AM PST Wednesday for Admiralty Inlet-Puget Sound and Hood Canal.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHYW1 - 9449424 - Cherry Point, WA 9 mi46 min 1004.1 hPa
CPNW1 9 mi82 min SSE 15 G 23 48°F
CPMW1 10 mi52 min 48°F
46118 22 mi39 min SW 31 47°F 1002.9 hPa47°F
FRDW1 - 9449880 - Friday Harbor, WA 34 mi58 min S 11 G 20 47°F 47°F1003.8 hPa
PBFW1 - Padilla Bay Reserve, WA 40 mi64 min S 17 48°F 1005 hPa42°F
SISW1 - Smith Island, WA 47 mi24 min SE 29 G 37 46°F 1004.7 hPa40°F

Wind History for Cherry Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bellingham, Bellingham International Airport, WA19 mi1.7 hrsSSE 17 G 2310.00 miMostly Cloudy50°F37°F63%1004.7 hPa
Eastsound, Orcas Island Airport, WA21 mi59 minS 13 G 2410.00 miOvercast50°F41°F71%1003.4 hPa

Link to 5 minute data for KBLI

Wind History from BLI (wind in knots)
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Last 24hrNE3NE8NE6NE6NE7NE5NE6N5Calm--CalmCalmN3NE7NE8N7E3SE4SE5SE4SE24
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1 day ago--N7N7N6N5N5N6N8N8N5CalmCalmCalmNE3N5CalmW3N4N3N3NW3N4CalmCalm
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--N7N3N4N5--N4N5N4N3N4N3N4N4N3NE8------

Tide / Current Tables for Blaine, Semiahmoo Bay, Washington
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Blaine
Click for Map
Tue -- 05:06 AM PST     9.69 feet High Tide
Tue -- 05:22 AM PST     Moonrise
Tue -- 07:54 AM PST     Sunrise
Tue -- 09:01 AM PST     8.72 feet Low Tide
Tue -- 12:58 PM PST     9.33 feet High Tide
Tue -- 01:58 PM PST     Moonset
Tue -- 04:49 PM PST     Sunset
Tue -- 09:16 PM PST     -0.81 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.65.67.38.69.49.79.59.28.88.78.899.29.39.18.375.33.31.4-0.1-0.8-0.60.4

Tide / Current Tables for Toe Point, Patos Island, 0.5 mile South of, Washington Current
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Toe Point
Click for MapFlood direction 45 true
Ebb direction 270 true

Tue -- 01:43 AM PST     2.20 knots Max Flood
Tue -- 05:21 AM PST     Moonrise
Tue -- 05:28 AM PST     -0.00 knots Slack
Tue -- 05:52 AM PST     -0.47 knots Max Ebb
Tue -- 06:58 AM PST     0.00 knots Slack
Tue -- 07:54 AM PST     Sunrise
Tue -- 11:50 AM PST     0.70 knots Max Flood
Tue -- 01:42 PM PST     -0.00 knots Slack
Tue -- 01:59 PM PST     Moonset
Tue -- 04:51 PM PST     Sunset
Tue -- 05:24 PM PST     -2.40 knots Max Ebb
Tue -- 07:49 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.22.21.81.10.4-0.500.20.40.60.70.70.4-0.2-0.9-1.8-2.3-2.2-1.30.20.91.62

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 (14,3,4,5)
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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.