Tuesday, January16, 2018 L-36.com


Marine Weather and Tides
Redmond, 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 7:48AMSunset 4:48PM Tuesday January 16, 2018 1:25 AM PST (09:25 UTC) Moonrise 7:30AMMoonset 4:43PM Illumination 0% Phase: New Moon; Moon at 29 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- 900 Pm Pst Mon Jan 15 2018
.small craft advisory in effect through Tuesday afternoon...
Tonight..SE wind 5 to 15 kt becoming S 15 to 25 kt after midnight. Wind waves 2 ft or less building to 2 to 4 ft. Rain at times.
Tue..S wind 15 to 25 kt. Wind waves 2 to 4 ft. Showers likely.
Tue night..S wind 5 to 15 kt becoming se after midnight. Wind waves 2 ft or less. A chance of showers in the evening then a slight chance of rain after midnight.
Wed..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Wed night..S wind 10 to 20 kt rising to 15 to 25 kt after midnight. Wind waves 1 to 4 ft.
Thu..S wind 10 to 20 kt becoming 5 to 15 kt in the afternoon. Wind waves 1 to 3 ft.
Thu night..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
Fri..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
Sat..S wind 10 to 20 kt becoming 5 to 15 kt. Wind waves 1 to 3 ft.
PZZ100 900 Pm Pst Mon Jan 15 2018
Synopsis for the northern and central washington coastal and inland waters..Low end gale force winds are likely on the coast and at the east entrance tonight as a front moves through the region. Another front is forecast to arrive Wednesday. Westerly swells higher than 25 feet are possible on the coast Thursday.

7 Day Forecast for Marine Location Near Redmond, WA
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location: 47.68, -122.1     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 160512
afdsew
area forecast discussion
national weather service seattle wa
912 pm pst Mon jan 15 2018

Synopsis A weakening cold front will bring rain across western
washington tonight, followed by some trailing showers on Tuesday.

A wetter and windier frontal system will move through western
washington Wednesday and Wednesday night, followed by cooler
showery weather Thursday and Friday. Another frontal system should
keep the area cool and wet this weekend.

Short term Strong southerly flow aloft is pushing a negatively
tilted cold front into western washington this evening. Rain
spread onto the coast a few hours ago and is now spreading into
the interior. South sound locations such as tcm, tiw and olm have
already picked up a couple hundredths of an inch of rain. Light
rain will continue to spread n-ne for the rest of tonight. Behind
the front, the air mass will cool quite a bit. After tying the
all-time january record high temp at sea today, 850 mb temps will
fall quickly overnight to near 0c by sunrise on Tuesday. Behind
the front, showers will continue as a lagging upper trough crosses
the area later Tuesday.

The trough will exit on Tuesday evening. A flat shortwave ridge
axis will cross late Tuesday night, bringing a brief period of
mostly dry weather late Tuesday night.

A deep closed 500 mb low center will develop around 140w near our
latitude on Wednesday, with a vertically stacked surface
reflection in the form a large and expansive 965 mb surface low.

Around the e-se periphery of the low, strong southwest flow aloft
will develop over western washington, though such low pressure
well offshore will lead to moderate to strong e-se pressure
gradients at the surface. At first, the southwest flow aloft will
push a warm front across the area Wed morning, with rain most
likely over the olympic peninsula.

By Wednesday evening, the whole pattern will shift slowly east,
pushing a cold front across western washington. The frontal band
will be accompanied by heavy precip, but the progressive nature of
the front will limit the duration of heavier rain to just a few
hours. Only the flood-prone skokomish river will bear watching in
this pattern.

The jet stream will shift SE of the area on Thursday, putting us
on the colder, more showery and unstable poleward side of the jet.

Instability brought by cold 500 mb temps of -32c to -30c on
Thursday and southwesterly cyclonic flow aloft will lead to
plenty of convective showers. Owing to lingering low pressure west
of northern vancouver island, southeast gradients will continue to
bring breezy weather to the forecast area.

Along the coast, will be keeping an eye on Thursday for coastal
impacts from a w-sw swell that is currently forecast to reach
28-29 feet over deep water beyond the surf zone. The swell is
forecast to be generated out of the expansive wind field around
the deep surface low well offshore. With a 20-second period, there
could be a lot of energy in the swell. If the forecast holds, this
would support beach erosion and long wave run-ups on the beaches.

Swell of this magnitude can support coastal flooding. Haner

Long term From previous discussion: Friday will be similarly
cool and showery as Thursday, thanks to the continuation of an
unstable air mass from cold air aloft.

The remnants of the offshore low and a trailing occluded front should
move onshore over southern b.C. Late Friday and early Saturday,
with showers and breezy weather continuing.

Without delay, another compact and energetic upper low will
develop offshore on Saturday. Models agree in pushing another
progressive, wet cold front across the area next weekend, followed
by cold-air instability and showers for next Sunday and Monday.

Hope you enjoyed today. There are no more dry 24-hour periods in
the forecast for the next week. Haner

Aviation Moderate southerly flow aloft will continue tonight as a
front moves inland. Flow aloft will turn westerly Tuesday. At the
surface, moderate southeasterly winds will develop. The air mass is
moist and stable. Light rain has already developed underVFR
ceilings. As rain continues through the night, ceilings are likely
to fall to MVFR 2-3k ft.

Ksea... Discussion above applies. Southeast wind 8-12 kt tonight will
become more southerly Tuesday. Chb

Marine A front will move inland tonight. Southeast winds will
increase to gale force on the coast and at the east entrance. Small
craft advisory strength winds are likely over the other waters.

Advisory level winds will probably persist through Tuesday.

A stronger system on Wednesday will probably also bring gales, and
a gale watch is now in effect for Wednesday and Wednesday night.

Westerly swells of 20 to 25 ft are possible Thursday. Chb

Hydrology Minor flooding is possible but unlikely on the
skokomish river on Wednesday night and Thursday. Elsewhere in
western washington, river flooding is not expected for the next 7
days.

A brief period of heavy rain is possible in the skokomish basin on
Wednesday evening. This will cause the river to rise on Wednesday
night and Thursday morning. Current rainfall forecasts support
bringing the skokomish to within a foot of flood stage. This will
bear watching, as forecast rainfall amounts are prone to change.

Haner

Sew watches warnings advisories
Wa... None.

Pz... Gale watch from late Tuesday night through late Wednesday night
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-east entrance u.S.

Waters strait of juan de fuca-northern inland waters
including the san juan islands.

Gale warning until 4 am pst 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 for rough bar until 4 am pst Wednesday for
grays harbor bar.

Gale warning until 10 am pst Tuesday for east entrance u.S.

Waters strait of juan de fuca.

Small craft advisory until 4 pm pst Tuesday for admiralty inlet-
northern inland waters including the san juan islands-puget
sound and hood canal.

Small craft advisory until 4 am pst Tuesday for central 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
EBSW1 - 9447130 - Seattle, WA 14 mi38 min ESE 2.9 G 8.9 51°F 49°F1016.9 hPa
46120 17 mi34 min SW 12 51°F 1015.9 hPa49°F
WPOW1 - West Point, WA 18 mi26 min SSE 11 G 13 50°F 1016.8 hPa (+2.3)47°F
TCNW1 - 9446484 - Tacoma, WA 33 mi44 min 50°F 49°F1017.2 hPa
TCMW1 - 9446482 - Tacoma Met, WA 33 mi38 min N 4.1 G 5.1
PTWW1 - 9444900 - Port Townsend, WA 46 mi44 min ESE 4.1 G 8.9 51°F 47°F1014.8 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA14 mi33 minENE 49.00 miLight Rain50°F48°F93%1017.4 hPa
Boeing Field - King County International Airport, WA15 mi33 minESE 510.00 miLight Rain50°F48°F93%1017 hPa
Everett Snohomish County, WA19 mi33 minSE 127.00 miLight Rain48°F46°F96%1016.4 hPa
Seattle, Seattle-Tacoma International Airport, WA20 mi33 minSSW 410.00 miLight Rain50°F46°F89%1017.5 hPa

Wind History from RNT (wind in knots)
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Last 24hrNW6NW5NW9CalmSE4SE6S5SE8NW3W8NW95NW8SE9
G14
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S73S6CalmSW7E4
1 day agoN6N7N5N7N5N643NW5N5CalmCalmCalmS5SE5CalmCalmCalmCalmCalmW3CalmNW4NW3
2 days agoS5CalmCalmCalmCalmCalmW3CalmCalmCalmNW5NW7NW8NW7NW7NW9NW8NW12NW11NW9NW8NW7NW7NW9

Tide / Current Tables for Seattle, Washington
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Seattle
Click for Map
Tue -- 05:46 AM PST     11.94 feet High Tide
Tue -- 07:29 AM PST     Moonrise
Tue -- 07:52 AM PST     Sunrise
Tue -- 10:55 AM PST     7.22 feet Low Tide
Tue -- 03:34 PM PST     10.30 feet High Tide
Tue -- 04:44 PM PST     Moonset
Tue -- 04:46 PM PST     Sunset
Tue -- 06:18 PM PST     New Moon
Tue -- 10:45 PM PST     -0.89 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.13.46.18.710.611.711.911.3108.67.57.27.68.49.410.210.29.585.93.41.1-0.5-0.9

Tide / Current Tables for Alki Point, 0.3 miles W of, Washington Current
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Alki Point
Click for Map
Tue -- 01:38 AM PST     0.77 knots Max Flood
Tue -- 05:34 AM PST     -0.00 knots Slack
Tue -- 07:30 AM PST     Moonrise
Tue -- 07:52 AM PST     Sunrise
Tue -- 08:06 AM PST     -0.38 knots Max Ebb
Tue -- 11:45 AM PST     0.00 knots Slack
Tue -- 01:14 PM PST     0.16 knots Max Flood
Tue -- 03:17 PM PST     -0.00 knots Slack
Tue -- 04:44 PM PST     Moonset
Tue -- 04:46 PM PST     Sunset
Tue -- 06:18 PM PST     New Moon
Tue -- 07:23 PM PST     -0.66 knots Max Ebb
Tue -- 11:08 PM PST     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.70.80.70.40.2-0.1-0.3-0.4-0.3-0.2-0.100.20.10-0.1-0.3-0.5-0.6-0.6-0.5-0.3-0

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 (4,6,7,8)
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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.