Monday, October14, 2019 L-36.com


Marine Weather and Tides
SeaTac, WA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:24AMSunset 6:25PM Monday October 14, 2019 6:09 PM PDT (01:09 UTC) Moonrise 6:15PMMoonset 7:02AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 215 Pm Pdt Mon Oct 14 2019
.small craft advisory in effect from Tuesday afternoon through late Tuesday night...
Tonight..Light wind becoming N to 10 kt after midnight. Wind waves 1 ft or less.
Tue..S wind 5 to 15 kt rising to 15 to 25 kt in the afternoon. Wind waves 2 ft or less building to 2 to 4 ft in the afternoon. A slight chance of showers in the afternoon.
Tue night..S wind 10 to 20 kt rising to 15 to 25 kt after midnight. Wind waves 2 to 4 ft. Showers likely.
Wed..S wind 15 to 25 kt. Wind waves 2 to 4 ft.
Wed night..S wind 15 to 25 kt. Wind waves 2 to 4 ft.
Thu..SW wind 15 to 25 kt. Wind waves 2 to 4 ft.
Thu night..S wind 10 to 20 kt becoming sw 5 to 15 kt after midnight. Wind waves 1 to 3 ft.
Fri..SW wind 10 to 20 kt becoming S 5 to 15 kt. Wind waves 1 to 3 ft.
Sat..SW wind 10 to 20 kt easing to 10 kt. Wind waves 1 to 3 ft subsiding to 1 ft or less.
PZZ100 215 Pm Pdt Mon Oct 14 2019
Synopsis for the northern and central washington coastal and inland waters..A vigorous front will reach the coastal waters Tuesday afternoon and move through the inland waters Tuesday night. Another strong front will arrive Wednesday followed by additional weather systems through the end of the week.


7 Day Forecast for Marine Location Near SeaTac, WA
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location: 47.42, -122.28     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 142220
afdsew
area forecast discussion
national weather service seattle wa
320 pm pdt Mon oct 14 2019

Synopsis A weak upper level ridge will move eastward and exit
the area by this evening. A frontal system will then approach
western washington and move inland on Tuesday. Wet and unsettled
weather will then continue through the week and into the weekend as
a series of systems move through.

Short term today through Wednesday Current satellite imagery
as well as a look out the window shows the morning low clouds have
burned off revealing mostly sunny skies for most locations over W wa
this afternoon. The exception to the rule seems to be along the
shores of the central strait... Around port angeles... Where some low
clouds still linger. The good news is that this patch is slowly
thinning. Temperatures at the time of this writing look to be mostly
in the mid to upper 50s with bellingham and seattle hitting 60. All
in all... A nice fall day and given the forecast... The last one for w
wa for a stretch.

Models still on track for the upper level ridge to continue moving
eastward today with the ridge axis finally crossing the cascade
crest around midnight tonight. This will hinder the advance of the
incoming frontal system a little... With the front reaching the coast
in the late morning or around noon but models continue to
consistently show this front will have trouble making its way
inland. Most locations should see dry conditions for much of the day
Tuesday before the front finally starts moving eastward late in the
afternoon with the best chances for precip holding off until Tuesday
evening or Tuesday night... Depending on location. Once the initial
front works its way in Wednesday morning it appears to begin to
dissipate over the area. Under normal circumstances... This would be
encouraging unless you like rain ... But a secondary front hot on
its heels passes through Wednesday afternoon and evening. This
second front proves to hold together much better and thus will keep
rain in the forecast for much of the day. This one two punch in
terms of fronts looks to also bring breezy to windy conditions to
the area. While the strongest winds are expected to be in the usual
favored spots... Along the coast and in the north interior... Some
spots along the sound will also see some breezes kick up. Models
continue to show wind speeds falling just short of any headline
criteria at this time... But will need to monitor as current solutions
are inching closer to said criteria.

High temperatures here in the short term look to remain mild
generally in the upper 50s to around 60. Overnight lows will see a
significant change though... Going from some brisk lower to mid 40s
and some isolated locations dipping down into the upper 30s
tonight to upper 40s to lower 50s Tuesday night thanks to the
increased cloud cover as a moderating influence. Smr

Long term Thursday through Sunday Late Wednesday night and into
Thursday morning models suggest there may be some scattering out of
precip... The GFS indicating it a bit better than the ecmwf... But
both models agree that the next frontal system and associated upper
level trough follows so quickly that to even suggest either a break
or brief transition to showers would be folly. Instead... Sufficed to
say the wet and active conditions are expected to continue
throughout the extended as a veritable conga line of systems make
their way through W wa as upper level low pressure holds court over
the western canadian coast. This will serve to lower daytime highs
down into the lower to mid 50s for lowland locations but overnight
lows will remain stable in the mid to upper 40s... With some valleys
in the SW interior possibly dipping down into the lower 40s. Smr

Aviation Fair skies will give way to thickening mid and high
clouds on Tuesday. Rain will develop on the coast in the afternoon
with lowering CIGS and rain will spread into the interior of western
washington late in the day--widespread MVFR CIGS with local ifr cigs
ought to be in place with the olympics becoming obscured tue
afternoon and the cascades Tue evening.

Ksea... High clouds will arrive and then thicken up and lower into a
mid level deck on Tuesday as a frontal system nears the area. Cigs
will lower additionally Tuesday evening with rain developing. Breezy
southerly winds will arrive with the front later on tue.

Marine A strong front will reach the coastal waters by Tuesday
afternoon and there is a gale warning in effect. Small craft
advisories are up starting Tuesday afternoon for the inland waters.

Periods of blustery weather will continue Wednesday through Friday
as additional weather systems move ashore in an active weather
pattern. Seas will build along the coast and will be in the 15-20ft
range for much of the latter half of the week.

Hydrology A series of wet systems moving through the area
Tuesday night into the weekend will cause rivers to rise, but
flooding is unlikely over the next seven days.

Sew watches warnings advisories
Gale warning from 6 am to 11 pm pdt Tuesday 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.

Small craft advisory from noon Tuesday to 5 am pdt Wednesday for
admiralty inlet-east entrance u.S. Waters strait of juan de
fuca-northern inland waters including the san juan islands-
puget sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 12 mi58 min WNW 2.9 G 4.1
TCNW1 - 9446484 - Tacoma, WA 13 mi58 min 58°F 56°F1018.3 hPa
WPOW1 - West Point, WA 19 mi70 min NNE 7 G 7 55°F 1018.6 hPa (-0.6)47°F
46120 24 mi45 min N 3.9 55°F 1016.7 hPa49°F
46121 26 mi42 min 57°F 1017.3 hPa49°F
46125 38 mi47 min 7.8 53°F 1017.2 hPa48°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seattle, Seattle-Tacoma International Airport, WA2 mi17 minNNE 610.00 miMostly Cloudy59°F39°F49%1018.1 hPa
Renton Municipal Airport, WA6 mi17 minNNW 310.00 miFair58°F42°F56%1017.7 hPa
Boeing Field - King County International Airport, WA8 mi17 minN 010.00 miMostly Cloudy59°F41°F51%1017.4 hPa
Tacoma, Tacoma Narrows Airport, WA19 mi17 minNE 310.00 miFair55°F44°F67%1017.4 hPa
Tacoma / McChord Air Force Base, WA21 mi72 minNNE 410.00 miFair60°F48°F66%1018.4 hPa
Pierce County-Thun Field, WA22 mi35 minN 010.00 miFair59°F44°F59%1017.6 hPa

Link to 5 minute data for KSEA

Wind History from SEA (wind in knots)
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Last 24hrSE43CalmCalmS5S4S5SE4SE4S4S4S4SE4S4S5S54W6W4SW5W4W3W4N6
1 day agoNW4NW3N4N4N4N7N5N4CalmCalmNW3CalmNW4N3CalmCalmW43W4CalmCalmSW5S4SE3
2 days agoCalmE8E12E10SE8SE9CalmCalmNE4NE6N3CalmNW3NE3NW5N6NE3W4NW3NW3W5NW4NW4Calm

Tide / Current Tables for Des Moines, Washington
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Des Moines
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Mon -- 12:00 AM PDT     1.58 feet Low Tide
Mon -- 06:17 AM PDT     10.66 feet High Tide
Mon -- 07:26 AM PDT     Sunrise
Mon -- 08:02 AM PDT     Moonset
Mon -- 12:09 PM PDT     3.61 feet Low Tide
Mon -- 05:55 PM PDT     11.00 feet High Tide
Mon -- 06:23 PM PDT     Sunset
Mon -- 07:14 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.62.23.85.98.19.810.610.49.47.85.94.33.645.47.39.210.61110.48.96.84.52.3

Tide / Current Tables for Skagit Bay, 1 mile N of Rocky Point, Washington Current
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Skagit Bay
Click for Map
Mon -- 12:57 AM PDT     0.00 knots Slack
Mon -- 04:35 AM PDT     0.75 knots Max Flood
Mon -- 06:26 AM PDT     -0.00 knots Slack
Mon -- 07:27 AM PDT     Sunrise
Mon -- 08:03 AM PDT     Moonset
Mon -- 11:31 AM PDT     -0.95 knots Max Ebb
Mon -- 01:07 PM PDT     0.00 knots Slack
Mon -- 04:32 PM PDT     0.58 knots Max Flood
Mon -- 06:00 PM PDT     -0.00 knots Slack
Mon -- 06:23 PM PDT     Sunset
Mon -- 07:15 PM PDT     Moonrise
Mon -- 11:34 PM PDT     -1.23 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.900.30.60.70.70.3-0.2-0.4-0.7-0.8-0.9-0.8-0.10.20.40.60.50-0.3-0.6-0.9-1.1-1.2

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 (21,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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 numerious 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.