Thursday, January18, 2018 L-36.com


Marine Weather and Tides
Bryn Mawr-Skyway, WA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:47AMSunset 4:52PM Thursday January 18, 2018 5:30 AM PST (13:30 UTC) Moonrise 8:45AMMoonset 6:40PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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- 252 Am Pst Thu Jan 18 2018
.small craft advisory in effect through late tonight...
Today..S wind 15 to 25 kt. Wind waves 2 to 4 ft. Showers and a slight chance of tstms in the morning then showers likely in the afternoon.
Tonight..S wind 15 to 25 kt. Wind waves 2 to 4 ft. Showers likely.
Fri..S wind 15 to 25 kt. Wind waves 2 to 4 ft. A chance of showers in the morning then showers likely in the afternoon.
Fri night..S wind 15 to 25 kt. Wind waves 2 to 4 ft.
Sat..S wind 15 to 25 kt easing to 10 to 20 kt in the afternoon. Wind waves 2 to 4 ft.
Sat night..S wind 10 to 20 kt rising to 15 to 25 kt after midnight. Wind waves 2 to 4 ft.
Sun..S wind 15 to 25 kt easing to 10 to 20 kt. Wind waves 2 to 4 ft.
Mon..SW wind 10 to 20 kt becoming S to 10 kt. Wind waves 1 to 3 ft subsiding to 1 ft or less.
PZZ100 252 Am Pst Thu Jan 18 2018
Synopsis for the northern and central washington coastal and inland waters..A deep and expansive low centered near 51n 134w will fill as it moves slowly east toward the northern tip of vancouver island Friday night. Tight pressure gradients associated with this low will give gales to the coastal waters and small craft advisory conditions to the inland waters through this evening. Combined seas 30 to 35 feet will affect the coastal waters through this evening. Additional fronts will reach the waters later Saturday through early next week.

7 Day Forecast for Marine Location Near Bryn Mawr-Skyway, WA
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location: 47.52, -122.26     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 181056
afdsew
area forecast discussion
national weather service seattle wa
256 am pst Thu jan 18 2018

Synopsis Moist southerly flow will continue today for
additional showers and a slight chance of thunderstorms. Large
waves generated by a deep low pressure offshore will impact the
washington coast today. Friday through Saturday will be showery
with an upper trough over the area. Additional fronts will move
through the area Sunday and around Tuesday night.

Short term Coastal flood update... Strong southwest winds
offshore have generated a large and energetic swell of 30-35 ft
at 18 or 19 seconds that are moving onto the coastline. The swell
will continue through this evening before slowly diminishing.

Waves will run up on beaches far beyond where they normally do
producing significant beach erosion. The breaking waves will
result in a piling up of water along the coastline. Low
atmospheric pressure and southwest winds are contributing to tides
that are running 1.5 feet above predicted values. The combination
of all of these effects will result in saltwater flooding in low-
lying coastal communities such as ocean shores, westport, and
taholah.

A strong pacific system sent a cold front inland overnight for
gusty winds, heavy showers and thunderstorms. The threat for
additional showers and thunderstorms will continue today as the
southerly 150kt jet shifts east of the crest. The surface low,
around 965 mb off haida gwaii, will gradually stall then
fill weaken through Friday. By Friday night, the low is around 995
mb as it passes inland through the queen charlotte sound.

Friday will be cool and unstable with a deep trough over the
west. The cooler air mass will knock snow levels down to around
2,000 ft in the mountains. We may see a brief break on Saturday
with weak upper level ridging. Sunday is looking more active as a
wetter frontal system moves inland. It'll be windy along the
coast and north interior with heavy snow possible in the
mountains. 33

Long term The forecast will remain unsettled through the middle
of next week as a series of fronts track through the region.

Temperatures are trending a few degrees below normal. The models
are trying to build a ridge over the pac NW late next week but a
warm front over b.C. Is clipping us for some rain. No major
changes from the previous forecast. 33

Aviation Strong southwest flow aloft will continue through
tonight around a strong and expansive low that is sitting about
200 nm west of the northern tip of vancouver island. The air mass
moving around this low is moist and unstable. Showers can be
expected across the area through tonight. There will be a threat
of thunderstorms this morning in the interior and through this
evening along the coast. Ceilings and visibilities will be
variable withVFR to MVFR conditions between showers, and
conditions dropping to lower end MVFR to ifr in heavier showers.

Albrecht
ksea... Expect showers with gusty south to southwest winds through
tonight. South winds generally 12-15 knots with gusts 22-25
knots. Ceilings 050 will drop to 2500 ft at times in heavier
showers. Visibilities p6sm falling to 3-5sm in heavier showers.

Albrecht

Marine A deep low centered near 51n 134w will gradually fill
as it slowly moves to the north tip of vancouver island Friday.

Strong southwest flow will continue through tonight with gales
over the coastal waters and widespread small craft advisory
conditions over the inland waters. Conditions will slowly improve
late Thursday night and Friday.

Weaker troughs will move through the waters Friday night and
Saturday. A series of rather strong fronts will move across the
waters Sunday through the middle of next week. Albrecht

Hydrology River flooding is not expected for the next 7 days.

Sew watches warnings advisories
Wa... Coastal flood warning until 10 pm pst this evening for central
coast-north coast.

Pz... Gale warning until 10 pm pst this evening 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 for rough bar until 4 am pst Friday for
grays harbor bar.

Small craft advisory until 4 am pst Friday 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-west entrance u.S. Waters strait of juan de
fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EBSW1 - 9447130 - Seattle, WA 7 mi42 min SE 7 G 11 44°F 49°F1010.1 hPa
WPOW1 - West Point, WA 14 mi90 min SSW 15 G 18 42°F 1009.5 hPa (+1.8)38°F
46120 18 mi32 min WSW 14 44°F 1008.2 hPa41°F
TCNW1 - 9446484 - Tacoma, WA 19 mi48 min 44°F 50°F1010.9 hPa
TCMW1 - 9446482 - Tacoma Met, WA 19 mi42 min SW 14 G 22
PTWW1 - 9444900 - Port Townsend, WA 49 mi48 min SE 7 G 13 44°F 47°F1007.3 hPa

Wind History for Seattle, Puget Sound, WA, WA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boeing Field - King County International Airport, WA2 mi37 minS 67.00 miLight Rain43°F41°F93%1010.2 hPa
Renton Municipal Airport, WA3 mi37 minSSE 86.00 miRain Fog/Mist44°F42°F93%1010.6 hPa
Seattle, Seattle-Tacoma International Airport, WA6 mi37 minSSW 14 G 256.00 miLight Rain Fog/Mist43°F39°F86%1010.4 hPa
Tacoma, Tacoma Narrows Airport, WA24 mi37 minS 15 G 236.00 miLight Rain Fog/Mist43°F39°F89%1009.1 hPa

Wind History from BFI (wind in knots)
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Last 24hrCalmCalmSE83E4CalmS4SE4SE3NW6SE4SE9SE5S10
G19
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Calm6S6
1 day agoS6S7S7S8S8
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S10S8S12S6Calm3SE3CalmCalmCalmCalmCalmCalm4W3
2 days agoCalmS4SE9E3CalmNW3W3CalmNW6CalmSE11SE10SE15
G18
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G18
SE10SE7CalmW3CalmSE5SE8S7SW3S3

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Thu -- 06:42 AM PST     11.88 feet High Tide
Thu -- 07:50 AM PST     Sunrise
Thu -- 08:45 AM PST     Moonrise
Thu -- 12:18 PM PST     6.33 feet Low Tide
Thu -- 04:49 PM PST     Sunset
Thu -- 04:53 PM PST     9.82 feet High Tide
Thu -- 06:41 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.60.72.95.78.410.511.611.811.29.98.476.46.57.48.59.59.89.386.241.80.1

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Thu -- 12:16 AM PST     0.00 knots Slack
Thu -- 02:49 AM PST     0.79 knots Max Flood
Thu -- 06:51 AM PST     -0.00 knots Slack
Thu -- 07:50 AM PST     Sunrise
Thu -- 08:45 AM PST     Moonrise
Thu -- 09:49 AM PST     -0.63 knots Max Ebb
Thu -- 01:39 PM PST     0.00 knots Slack
Thu -- 02:36 PM PST     0.16 knots Max Flood
Thu -- 04:45 PM PST     -0.00 knots Slack
Thu -- 04:50 PM PST     Sunset
Thu -- 06:41 PM PST     Moonset
Thu -- 09:04 PM PST     -0.93 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.10.40.70.80.70.50.2-0.1-0.4-0.6-0.6-0.5-0.4-0.10.10.20.1-0.1-0.3-0.6-0.8-0.9-0.9-0.6

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Seattle, WA (8,2,3,4)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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 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.