Saturday, February27, 2021
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Marine Weather and Tides
Maplewood, 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 6:51AMSunset 5:54PM Saturday February 27, 2021 1:49 AM PST (09:49 UTC) Moonrise 6:31PMMoonset 7:35AM 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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PZZ135 Puget Sound And Hood Canal- 805 Pm Pst Fri Feb 26 2021
.small craft advisory in effect until 4 am pst Saturday...
Tonight..W wind 15 to 25 kt. Wind waves 2 to 4 ft. A chance of showers.
Sat..SW wind 10 to 20 kt becoming S to 10 kt in the afternoon. Wind waves 1 to 3 ft subsiding to 1 ft or less in the afternoon.
Sat night..S wind 10 to 20 kt. Wind waves 1 to 3 ft. A slight chance of rain in the evening then a chance of rain after midnight.
Sun..S wind 15 to 25 kt. Wind waves 2 to 4 ft.
Sun night..S wind 5 to 15 kt. Wind waves 2 ft or less.
Mon..S wind to 10 kt. Wind waves 1 ft or less.
Mon night..SW wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Tue..S wind to 10 kt. Wind waves 1 ft or less.
Wed..S wind to 10 kt. Wind waves 1 ft or less.
PZZ100 805 Pm Pst Fri Feb 26 2021
Synopsis for the northern and central washington coastal and inland waters..Strong onshore flow will continue to produce hazardous winds and seas across the coastal and inland waters tonight. Conditions will improve on Saturday as high pressure builds across the waters. A weak front will brush the area on Sunday into Sunday night for the return of advisory level winds. A series of weak systems will affect the waters early next week.


7 Day Forecast for Marine Location Near Maplewood, WA
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location: 47.33, -122.55     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 270433 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 833 PM PST Fri Feb 26 2021

UPDATE. The forecast is overall in good shape this evening. The synoptic pattern is characterized by broad cyclonic flow that encompasses the western 2/3rds of the CONUS, within which a vort lobe was noted to extend from the PNW northward into BC. At the surface, low pressure resides east of the Cascades and into the Rockies, with high pressure offshore over the N Pacific, nosing into W WA.

This evening, local radar imagery continues to pick up a few areas of lowland rain and mountain snow, most noticeably so over the Eastern Strait of Juan de Fuca southeastward through Snohomish County and into the Central Cascades (including Stevens Pass) and across the Southern Cascades. The area of precipitation that extends from the Strait and over into the Central Cascades has taken on some convective type features over the last hour. This has been confirmed via social media with some reports of small hail and isolated lightning strikes. Per SPC mesoanalysis, this area falls in line with lingering divergence aloft in the left exit region of a departing jet streak, some lingering PVA near the vort lobe, and along a gradient of stronger mid level lapse rates as temperatures around H5 remain around -30C. These conditions are supportive of isolated convection and these threats (isolated lightning and small hail) will continue for the next hour or so. Thereafter, through the remainder of the evening and towards midnight, the most favorable dynamics will move east of the local area, and the convective threats, along with most of the precipitation in general will subside. Can expect conditions to gradually dry out overnight, with a dry first half of Saturday expected. A weak sfc frontal system will graze the area during the latter half of the day, with some light showers affecting the Coast and moving inland Saturday evening.

The Winter Storm Warning for the Central and Southern Cascades has been extended until 1AM Saturday based on recent radar trends and reports. Travel is likely to become difficult across the Passes for the next several hours. The Winter Weather Advisory for the North Cascades was valid through 6PM this evening and, again given precipitation trends, was allowed to expire. Previous discussion is available for reference below, with an updated marine and aviation section.

Kovacik

PREV DISCUSSION. /issued 236 PM PST Fri Feb 26 2021/

SYNOPSIS. A cool showery air mass will remain over Western Washington through this evening. Onshore flow will ease overnight. A few bands of heavy snow showers will fall this evening in the Cascades before tapering off overnight. Saturday will see a break in the weather. A weak warm front will brush the area Saturday night and Sunday and a cold front will move through Western Washington Monday. Additional weak weather systems will keep a chance of rain in the forecast next week.

SHORT TERM /TONIGHT THROUGH MONDAY/. There is more more impulse to go through the area this evening in the northwest flow aloft. A few more bands of heavy snow showers will develop and move off into the Cascades before the snow ends overnight. A few hills in the low elevations might see some wet snowflakes this evening. Conditions should be dry by daybreak Saturday. The high surf continues for the ocean beaches tonight. Strong high pressure offshore will shift toward the area, but we wont get enough protection to keep a weak warm front and then a cold front out of the area. There is some indication that the cold front and upper trough will split, so the system on Monday will probably turn out to be on the weaker side. 19

LONG TERM /TUESDAY THROUGH FRIDAY/. Some periods of drippy early spring weather are likely, especially Tuesday and Wednesday, but there is still a hint of the next upper trough digging enough to throw up some ridging for a day or two. If the Euro has the right idea, perhaps Thursday and Friday could turn out to be nice days. The Canadian model also shows the upper level winds backing to southerly and heights rising a bit around Thursday. The GFS doesn't have much of a ridge and a front moves ashore around Thursday night. Naturally the forecast is a simple blend of all the guidance and isn't much different from climo. 19

AVIATION. Northwest flow aloft continues tonight with a moist and somewhat unstable air mass. Showers and possible thunderstorms may affect Island, Snohomish and King counties due to a convergence zone. Shower activity will gradually diminish across the lowlands after 09z as an upper level disturbance exits the region. Gusty winds will continue near the coast and Strait of Juan de Fuca this evening before easing overnight. As low level winds ease overnight tonight, some pockets of MVFR ceilings could redevelop, especially around the central and southern portions of Puget Sound.

KSEA . Showers in the vicinity through 09z tonight with variable wind and possible MVFR cigs. Drier weather Saturday morning although may still see lingering low clouds and MVFR conditions. VFR by the afternoon with S wind to 10 kt.

MARINE. Strong onshore flow will continue across area waters tonight. Gale warnings remain in effect for the coastal waters and the Strait of Juan de Fuca. Elsewhere, small craft advisories remain in effect. Winds are expected to ease across all area waters late tonight and into Saturday as weak high pressure builds over the coastal waters. A weakening front may brush the area on Sunday, potentially bringing another round of small craft winds to area waters. Coastal swells of 20 to 24 feet will gradually subside late tonight and over the weekend. 27

HYDROLOGY. River flooding is not expected over the next 7 days.

SEW WATCHES/WARNINGS/ADVISORIES. WA . Winter Storm Warning until 10 PM PST this evening for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties.

High Surf Advisory until 10 PM PST this evening for Central Coast-North Coast.

PZ . Small Craft Advisory until 10 PM PST Saturday for Grays Harbor Bar.

Small Craft Advisory from 4 AM Saturday to 3 AM PST Sunday 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 AM PST Saturday for Central U.S. Waters Strait Of Juan De Fuca-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- East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 7 AM PST Saturday for Northern Inland Waters Including The San Juan Islands.

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

Small Craft Advisory until 4 AM PST Saturday 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
TCMW1 - 9446482 - Tacoma Met, WA 8 mi55 min E 2.9 G 4.1
TCNW1 - 9446484 - Tacoma, WA 8 mi55 min 38°F 48°F1018.5 hPa
WPOW1 - West Point, WA 24 mi49 min SSW 7 G 8 41°F 1017.9 hPa (+2.1)38°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tacoma, Tacoma Narrows Airport, WA4 mi56 minS 310.00 miPartly Cloudy36°F33°F89%1017.6 hPa
Tacoma / McChord Air Force Base, WA12 mi51 minN 010.00 miPartly Cloudy33°F32°F96%1018.2 hPa
Seattle, Seattle-Tacoma International Airport, WA15 mi56 minESE 810.00 miMostly Cloudy37°F34°F89%1018 hPa
Bremerton, Bremerton National Airport, WA16 mi53 minN 010.00 miFair28°F27°F96%1018.3 hPa
Fort Lewis / Gray U. S. Army Airfield, WA17 mi1.9 hrsN 010.00 miFair35°F35°F100%1017.5 hPa
Boeing Field - King County International Airport, WA19 mi56 minSE 710.00 miMostly Cloudy37°F34°F89%1017.7 hPa
Renton Municipal Airport, WA21 mi56 minN 010.00 miMostly Cloudy37°F34°F89%1018.3 hPa
Pierce County-Thun Field, WA21 mi54 minN 010.00 miPartly Cloudy34°F34°F100%1017.6 hPa

Link to 5 minute data for KTIW

Wind History from TIW (wind in knots)
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SW7SW7SW5NW4CalmCalmS3
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2 days agoCalmCalmCalmCalmCalmCalmN3CalmCalmCalm3CalmW5NW3CalmCalmCalmCalmCalmS3S5S6S6SW9

Tide / Current Tables for Tahlequah, Neil Point, Washington
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Tahlequah
Click for Map
Sat -- 12:19 AM PST     Full Moon
Sat -- 05:35 AM PST     12.90 feet High Tide
Sat -- 06:53 AM PST     Sunrise
Sat -- 07:34 AM PST     Moonset
Sat -- 11:19 AM PST     5.12 feet Low Tide
Sat -- 04:32 PM PST     11.14 feet High Tide
Sat -- 05:52 PM PST     Sunset
Sat -- 06:31 PM PST     Moonrise
Sat -- 11:13 PM PST     -0.57 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.536911.412.712.811.910.186.15.25.46.58.29.911111085.52.80.6-0.5

Tide / Current Tables for Gig Harbor Entrance, Washington Current
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Gig Harbor Entrance
Click for Map
Sat -- 12:19 AM PST     Full Moon
Sat -- 01:49 AM PST     1.39 knots Max Flood
Sat -- 05:42 AM PST     -0.01 knots Slack
Sat -- 06:53 AM PST     Sunrise
Sat -- 07:34 AM PST     Moonset
Sat -- 09:32 AM PST     -1.08 knots Max Ebb
Sat -- 11:42 AM PST     0.00 knots Slack
Sat -- 01:52 PM PST     0.85 knots Max Flood
Sat -- 04:44 PM PST     -0.01 knots Slack
Sat -- 05:52 PM PST     Sunset
Sat -- 06:31 PM PST     Moonrise
Sat -- 09:07 PM PST     -1.61 knots Max Ebb
Sat -- 11:44 PM PST     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.71.21.41.20.80.4-0.2-0.6-0.9-1.1-1-0.60.20.70.80.70.3-0.1-0.7-1.1-1.5-1.6-1.4-0.8

Weather Map
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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.
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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.