Thursday, March23, 2017 L-36.com


Marine Weather and Tides
White Center, WA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:01AMSunset 7:29PM Thursday March 23, 2017 7:17 PM PDT (02:17 UTC) Moonrise 3:49AMMoonset 1:39PM Illumination 13% Phase: Waning Crescent; Moon at 26 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 Pdt Thu Mar 23 2017
.small craft advisory in effect through Friday afternoon...
Tonight..S wind 15 to 25 kt. Wind waves 2 to 4 ft. Highest wind and waves N part. Rain in the evening then showers after midnight.
Fri..S wind 15 to 25 kt becoming sw. Wind waves 2 to 4 ft. Rain likely in the morning then showers and a slight chance of tstms in the afternoon.
Fri night..S wind 5 to 15 kt. Wind waves 2 ft or less. A slight chance of tstms in the evening. Showers likely.
Sat..SW wind 5 to 15 kt becoming variable in the afternoon. Wind waves 2 ft or less.
Sat night..NW wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Sun..SE wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Sun night..SW wind to 10 kt in the evening becoming light. Wind waves less than 1 ft.
Mon..Light wind becoming variable to 10 kt. Wind waves 1 ft or less.
Tue..S wind 10 to 15 kt. Wind waves 2 ft or less.
PZZ100 300 Pm Pdt Thu Mar 23 2017
Synopsis for the northern and central washington coastal and inland waters..A vigorous front over the coastal waters this evening will shift through the inland waters later tonight. Onshore shore flow will prevail behind the front Friday and Friday night. Weak surface high pressure will shift over the area Saturday afternoon and night. Another low pressure system will affect the waters Sunday into early next week.

7 Day Forecast for Marine Location Near White Center, WA
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location: 47.56, -122.35     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 232231
afdsew
area forecast discussion
national weather service seattle wa
330 pm pdt Thu mar 23 2017

Synopsis Rain will spread into the interior this evening as a
front moves onshore. An upper trough will bring showers Friday.

Showers will decrease Saturday as the trough shifts inland.

Additional fronts will reach the area Sunday and around Wednesday.

Short term Rain on the coast is quite apparent in radar, and has
been showing up in surface obs as well. Visible satellite imagery
still shows some clear bits over inland areas, but clouds will be
increasing presently. The front will move onshore this evening
bringing rain to all areas, with decreasing showers behind the front
later tonight. The mountains will get snow--southerly flow aloft
favors the volcanoes but not the passes, so have issued a winter
weather advisory mainly for the volcanoes above about 4000 feet late
tonight through Friday morning. There will also be some breezy to
windy conditions coast and north interior.

An upper trough will move over the area on Friday giving showers.

A shortwave in the flow will enhance showers in the afternoon.

Models have continued to show negative lifted indices spreading from
offshore Friday morning to inland areas Friday afternoon and
evening. Have introduced a slight chance of thunderstorms into the
forecast for Friday afternoon and evening.

The upper trough will slowly shift inland Friday night and Saturday.

There will be enough lingering instability for a continued chance of
showers but the trend should be toward drying on Saturday and
especially Saturday night. Sunday will begin dry but another system
will reach the coast in the afternoon and probably spread rain over
the whole area Sunday evening. High temperatures Friday through
Sunday will be a few degrees below normal. Burke

Long term Monday will be showery as an upper trough passes.

Tuesday now looks wetter in the models and have boosted pops,
especially on the coast and in the mountains. Wednesday still
appears to be a day when a front brings rain. Thursday will be
showery at first but could see significant drying later in the day.

Temperatures will be close to normal through the period. Burke

Aviation Strong southwest flow aloft through Friday morning as a
trough moves into the pacific northwest. Moderate west-southwest
flow aloft by Friday afternoon. Air mass generally moist and stable.

A surface front will reach the coast by around midnight and
dissipate as it slowly moves through puget sound Friday morning.

Rain developing over most of WRN wa by early this evening, becoming
showers behind a front Friday. MainlyVFR cigs, however brief
periods of MVFR cigs/vis possible with steady rain ahead of the
front later tonight.

Ksea... Southeast wind 8-13 kt, becoming south-southwest 10-16 kt
gusts to 28 kt Friday.VFR CIGS around 7-8k ft lowering rapidly to
around 4k ft as steady rain develops around 02z.

Marine Southeast gales up to 40 kt over the coastal waters this
evening, switching to south or southwesterly late tonight and
gradually easing behind a front. Gale force winds over the east
entrance to the strait and north inland waters will be more brief
tonight. Small craft winds developing this evening all other waters
including puget sound. As gales ease late tonight, small craft
strength winds will linger in most waters Friday in post frontal
onshore flow.

Higher pressure builds over the waters Friday night through
Saturday. Another low will affect the waters late Sunday into
Monday.

Hydrology River flooding is unlikely over the next 7 days.

Sew watches/warnings/advisories
Wa... Winter weather advisory from 11 pm this evening to 11 am pdt
Friday for cascades of pierce and lewis counties-cascades
of whatcom and skagit counties.

Pz... Small craft advisory from 3 am to 5 pm pdt Friday 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 3 am pdt Friday 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.

Small craft advisory for rough bar until 11 pm pdt Friday for
grays harbor bar.

Small craft advisory until 5 pm pdt Friday for admiralty inlet-
puget sound and hood canal-west entrance u.S. Waters strait
of juan de fuca.

Small craft advisory until 6 am pdt Friday for central 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 3 mi48 min S 1 G 5.1 54°F 47°F1012.9 hPa
WPOW1 - West Point, WA 8 mi78 min SSE 6 G 6 51°F 1012.8 hPa (-2.6)41°F
TCMW1 - 9446482 - Tacoma Met, WA 20 mi48 min WNW 1 G 1.9
TCNW1 - 9446484 - Tacoma, WA 21 mi48 min 53°F 45°F1013.2 hPa
46121 28 mi47 min 7.8 52°F 1012.9 hPa37°F
PTWW1 - 9444900 - Port Townsend, WA 44 mi48 min ESE 13 G 16 52°F 47°F1012.6 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seattle, Seattle Boeing Field, WA3 mi25 minWSW 510.00 miOvercast54°F37°F53%1012.8 hPa
Renton, Renton Municipal Airport, WA8 mi25 minSSW 310.00 miOvercast55°F35°F47%1013.3 hPa
Seattle, Seattle-Tacoma International Airport, WA9 mi25 minSW 710.00 miOvercast53°F35°F51%1013.8 hPa
Bremerton, Bremerton National Airport, WA23 mi23 minS 8 G 158.00 miOvercast46°F41°F82%1014.2 hPa
Tacoma, Tacoma Narrows Airport, WA23 mi25 minS 9 G 1710.00 miLight Rain50°F37°F63%1013.5 hPa
Everett Snohomish County, WA24 mi25 minSSE 810.00 miOvercast52°F34°F50%1012.8 hPa

Wind History from BFI (wind in knots)
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S8S7SE8SE8SE4S7S74S8SE6S854SE7SW5W5
1 day agoE3S4E3SE3SE6SE4SE4CalmSE6SE5SE5S4SE3CalmSW8S7
G15
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2 days agoCalmW3CalmCalmN3CalmN4CalmCalmCalmCalmCalmCalmNW5NW4NW4CalmS6S3S6S5S8SE5W5

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Thu -- 03:23 AM PDT     10.12 feet High Tide
Thu -- 04:47 AM PDT     Moonrise
Thu -- 07:05 AM PDT     Sunrise
Thu -- 09:12 AM PDT     5.99 feet Low Tide
Thu -- 01:44 PM PDT     8.46 feet High Tide
Thu -- 02:38 PM PDT     Moonset
Thu -- 07:26 PM PDT     Sunset
Thu -- 08:53 PM PDT     1.18 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.68.39.510.1109.48.37.26.466.26.87.68.38.487.15.84.22.61.51.21.83.1

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Thu -- 03:04 AM PDT     -0.00 knots Slack
Thu -- 04:48 AM PDT     Moonrise
Thu -- 06:20 AM PDT     -0.52 knots Max Ebb
Thu -- 07:05 AM PDT     Sunrise
Thu -- 10:26 AM PDT     0.00 knots Slack
Thu -- 11:21 AM PDT     0.11 knots Max Flood
Thu -- 01:29 PM PDT     -0.00 knots Slack
Thu -- 02:38 PM PDT     Moonset
Thu -- 05:54 PM PDT     -0.72 knots Max Ebb
Thu -- 07:27 PM PDT     Sunset
Thu -- 09:42 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.40.20-0.2-0.4-0.5-0.5-0.4-0.2-0.10.10.10-0.1-0.3-0.5-0.7-0.7-0.7-0.5-0.20.10.4

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.