Friday, December15, 2017 L-36.com


Marine Weather and Tides
Woodway, 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 7:50AMSunset 4:19PM Friday December 15, 2017 7:25 PM PST (03:25 UTC) Moonrise 5:08AMMoonset 3:12PM Illumination 5% Phase: Waning Crescent; Moon at 27 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- 300 Pm Pst Fri Dec 15 2017
Tonight..S wind 5 to 15 kt, except N wind from seattle northward during the evening. Wind waves 2 ft or less. A chance of showers in the evening then a slight chance of showers after midnight.
Sat..S wind to 10 kt. Wind waves 1 ft or less. A chance of rain.
Sat night..S wind 5 to 15 kt rising to 15 to 25 kt after midnight. Wind waves 2 ft or less building to 2 to 4 ft after midnight. A chance of rain in the evening then rain likely after midnight.
Sun..S wind 15 to 25 kt easing to 10 to 20 kt in the afternoon. Wind waves 1 to 4 ft.
Sun night..S wind 5 to 15 kt becoming sw after midnight. Wind waves 2 ft or less.
Mon..S wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Mon night..Light wind becoming S to 10 kt after midnight. Wind waves 1 ft or less.
Tue..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
Wed..SW wind to 10 kt becoming light. Wind waves 1 ft or less.
PZZ100 300 Pm Pst Fri Dec 15 2017
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will bring small craft winds to the coastal waters and strait of juan de fuca much of tonight. A lull in winds are expected most of Saturday. The next warm front will move through the waters Saturday night and Sunday. A deepening low will track inland near or to the north of western washington on Tuesday.

7 Day Forecast for Marine Location Near Woodway, WA
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location: 47.81, -122.38     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 152304
afdsew
area forecast discussion
national weather service seattle wa
304 pm pst Fri dec 15 2017

Synopsis Showers will wind down tonight as a trough exits and
onshore flow eases. A weak warm front will clip the coast on
Saturday with a chance of rain in the interior. Showers will
increase on Sunday as a cold front crosses the region. A stronger
and wetter pacific system will impact the area on Tuesday with
heavy snow possible in the mountains. A ridge will bring dry
weather toward the latter half of next week.

Short term A weak cold front moved inland this morning and now
we're in post-frontal onshore flow. Showers are scattered but
there is some enhancement in the activity over snohomish county
due to a puget sound convergence zone. Models show the convergence
zone shifting south into king county this evening. After
midnight, most of the shower activity should be confined to the
cascades.

The next system, on Saturday, is a warm front that will mainly
clip the coast then dissipate over southern b.C. There's a chance
of showers in the interior but precip amounts will be light.

Showers will increase on Sunday as the cold front shifts SE into
western washington. Snow levels will waver from 3,000-5,000 feet
and the volcanoes may see a period of heavy snow. Another warm
front will reach the area on Monday for more wet weather. 33

Long term A stronger and wetter pacific frontal system will
impact the region on Tuesday. The likely main impact is heavy
snow in the cascades. Models are showing a wet system draped over
w wa during this period and snow levels will be dropping from
around 5,000 to 3,000 feet through the day as a cool upper level
trough moves inland. Heavy snow could affect travel over the
passes. There were some concerns with the winds as the surface
low moves inland but the 12z model solutions are backing off,
especially the ECMWF and canadian. These two solutions bring the
low inland farther south with a weaker pressure gradient over the
interior. The GFS still shows the low passing through the b.C. Wa
border but the 12 and 18z solutions are both weaker compared to
previous runs. We'll see how this evolves over the next series of
solutions. This system does appear to be a quick mover and
showers will wind down Tuesday night as this system exits. Beyond
then, another strong upper level ridge builds over the pac NW for
another period of dry stable weather. 33

Aviation An upper trough over the region late this afternoon
will shift eastward tonight. Moderate northwest aloft becoming
southwesterly by late Saturday ahead of the next system. The air
will be moist only slightly unstable with showers, decreasing later
this evening.

A puget sound convergence zone could still develop at any time
through this evening. There now appears to a chance, perhaps
around 50 percent, that a convergence zone could push down over
bfi and sea with a north wind shift possible through around 9pm.

The wind shift is already indicated in the tafs.

Ksea... Mostly MVFR through tonight, with showers and a possible
convergence zone this evening. Southwest 5-10 mph switching to north
possibly for few hours (best chance early evening). Dtm

Marine Onshore flow will bring small craft winds to the coastal
waters and strait through most of tonight before easing. A lull in
wind is expected across the waters most of the day.

A warm front will move through the waters late Saturday night into
Sunday. Some small craft advisory conditions are likely across the
waters, mainly north of puget sound.

By Tuesday, a stronger low could track near western washington.

Small craft winds or some gales are possible, but forecast
confidence is low at this time. Dtm

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

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 3 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-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
46120 4 mi31 min NW 7.8 45°F 1023.2 hPa42°F
WPOW1 - West Point, WA 11 mi25 min WSW 4.1 G 5.1 43°F 1024 hPa (+1.3)40°F
EBSW1 - 9447130 - Seattle, WA 15 mi37 min SSW 1.9 G 4.1 44°F 50°F1023.7 hPa
PTWW1 - 9444900 - Port Townsend, WA 29 mi37 min S 7 G 14
TCMW1 - 9446482 - Tacoma Met, WA 37 mi37 min SE 2.9 G 5.1
TCNW1 - 9446484 - Tacoma, WA 38 mi43 min 42°F 50°F1024.1 hPa
46121 41 mi33 min 5.8 43°F 1023.4 hPa41°F
SISW1 - Smith Island, WA 43 mi25 min NNE 8 G 9.9 45°F 1023.2 hPa (+1.3)
PBFW1 - Padilla Bay Reserve, WA 45 mi55 min ENE 2.9 39°F 1023 hPa39°F

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Everett Snohomish County, WA9 mi32 minS 59.00 miOvercast42°F39°F92%1023.4 hPa
Boeing Field - King County International Airport, WA20 mi32 minSSE 47.00 miOvercast43°F42°F97%1023.4 hPa
Renton Municipal Airport, WA23 mi32 minN 010.00 miOvercast44°F42°F93%1024 hPa

Wind History from PAE (wind in knots)
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Last 24hrSE6SE5SE7SE9SE4CalmSE5SE5SE6SE6SE5SE11SE6SE6SE4SE54S7SE4SW4S5SW3SE4S5
1 day agoNW3N5N3CalmE6CalmCalmCalmCalmNE44NW4N5CalmE4E54CalmCalmCalmCalmE5Calm3
2 days agoNW3CalmNW3NW6N4CalmCalmNW3N3NE4NW4NW5N6CalmSW3NW6NW7N6N6NW5NW4NW4NW3NW3

Tide / Current Tables for Edmonds, Washington
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Edmonds
Click for Map
Fri -- 04:03 AM PST     10.14 feet High Tide
Fri -- 05:07 AM PST     Moonrise
Fri -- 07:52 AM PST     Sunrise
Fri -- 08:57 AM PST     6.38 feet Low Tide
Fri -- 02:21 PM PST     10.54 feet High Tide
Fri -- 03:12 PM PST     Moonset
Fri -- 04:17 PM PST     Sunset
Fri -- 09:25 PM PST     -0.21 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.66.88.69.710.19.88.87.66.76.46.77.68.89.910.510.49.57.85.430.9-0.1-01.1

Tide / Current Tables for President Point, 1.5 mile E of, Washington Current
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President Point
Click for MapFlood direction 203 true
Ebb direction 24 true

Fri -- 12:10 AM PST     0.44 knots Max Flood
Fri -- 04:01 AM PST     -0.00 knots Slack
Fri -- 05:07 AM PST     Moonrise
Fri -- 06:15 AM PST     -0.35 knots Max Ebb
Fri -- 07:52 AM PST     Sunrise
Fri -- 10:10 AM PST     0.00 knots Slack
Fri -- 11:41 AM PST     0.19 knots Max Flood
Fri -- 02:19 PM PST     -0.00 knots Slack
Fri -- 03:12 PM PST     Moonset
Fri -- 04:17 PM PST     Sunset
Fri -- 05:57 PM PST     -0.69 knots Max Ebb
Fri -- 10:26 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.40.30.2-0-0.2-0.3-0.3-0.3-0.1-00.10.20.10-0.2-0.4-0.6-0.7-0.6-0.5-0.3-0.10.2

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 (22,6,7,8)
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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.