Thursday, July20, 2017 L-36.com


Marine Weather and Tides
Longbranch, 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 5:36AMSunset 8:59PM Thursday July 20, 2017 3:41 PM PDT (22:41 UTC) Moonrise 2:00AMMoonset 5:24PM Illumination 8% 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- 240 Pm Pdt Thu Jul 20 2017
Tonight..N wind 5 to 15 kt N part. SW wind 5 to 15 kt S part. Wind becoming variable to 10 kt all areas after midnight. Wind waves 2 ft or less. A slight chance of showers in the evening.
Fri..Light wind becoming sw to 10 kt in the afternoon. Wind waves 1 ft or less.
Fri night..NW wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less. A slight chance of rain.
Sat..S wind to 10 kt becoming variable in the afternoon. Wind waves 1 ft or less.
Sat night..N wind 5 to 15 kt. Wind waves 2 ft or less.
Sun..N wind to 10 kt. Wind waves 1 ft or less.
Sun night..N wind 5 to 15 kt. Wind waves 2 ft or less.
Mon..N wind to 10 kt. Wind waves 1 ft or less.
Tue..S wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 240 Pm Pdt Thu Jul 20 2017
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will prevail tonight. A front will move into the offshore waters Friday and dissipate offshore on Saturday. Onshore flow will follow Sunday through Tuesday with high pressure offshore and lower pressure inland.

7 Day Forecast for Marine Location Near Longbranch, WA
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location: 47.17, -122.87     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 202131
afdsew
area forecast discussion
national weather service seattle wa
231 pm pdt Thu jul 20 2017

Synopsis A weather system lifting across vancouver island and
into southern british columbia will bring a chance of showers into
this evening. After drier conditions later tonight and Friday,
another disturbance will move by to the north of the area Friday
night and Saturday giving a chance of light rain to the northern
portions of the area. The pattern will return to a dry, sunny and
warmer than normal one Sunday through Monday. There will be an
increase in night and morning clouds and temperatures will cool to
near normal starting about Tuesday.

Short term Radars show scattered light showers continuing
along the coast, along the west slopes of the mountains, and in an
area of convergence from around port townsend to east of mount
vernon. These showers will gradually dissipate this evening as the
disturbance that is producing them pushes well off to the northeast
of the area.

500 mb heights will rise later this evening through Friday as a
weak shortwave upper ridge moves across the area. Conditions aloft
will dry and warm in response to this weak ridge. Then another
short wave trough, this one now centered along 138w longitude,
will move east across vancouver island late Friday through
Saturday. Despite the high 500 mb heights in the mid 580 dam
range across western washington Friday night and Saturday, the
12z models all bring some precipitation into the northern third or
so of western washington during this period. Time-height diagrams
based on forecast upper air soundings show more mid and high
level cloudiness and higher humidities in the lower levels than
with the system that moved across our area this morning, and this
next system will be accompanied by a stronger jet streak moving by
to the north of the area.

Despite continued onshore flow on Sunday, high 500-mb heights and
warm conditions aloft will give temperatures in the mid 70s to
lower 80s in the interior as well ad dry conditions. Albrecht

Long term Monday will be much like Sunday with 500 mb heights
remaining in the lower 580 dam range and low level flow remaining
onshore. Then Tuesday onward we will see lowering heights aloft
as a mid 560 dam upper low passes through southern british
columbia and onshore flow increasing somewhat. The forecast from
Tuesday onward will feature more extensive night and morning
clouds and temperatures around or slightly below normal for late
july. A few model solutions hint at some isolated showers mid week
as the upper trough passes by to the north, but we are entering
our driest time of year and most solutions are dry. Albrecht

Aviation A weak upper ridge will move over the area tonight.

Upper heights will continue to build over the area on Friday with
westerly flow aloft. At the surface, onshore flow will prevail
tonight and Friday with a ridge along the coast and lower
pressure inland. Slightly unstable air will become stable this
evening.

Ceilings are generally 5000-6000 feet although some locations
have scattered and a few patches of MVFR low clouds continue to
linger near the coast and strait. In general, clouds will continue
to slowly decrease this evening. Areas of MVFR low clouds are
expected to reform again later tonight and Friday morning.

Ksea... Ceilings should be generally 5000-6000 feet through early
Friday morning although clouds might scatter for a few hours this
evening. MVFR low clouds are expected to redevelop Friday morning
and then break up later in the day. South wind 5-10 knots through
early evening. Winds are expected to switch to north later this
evening but they will be pretty light by then and become variable
after midnight. Schneider

Marine A surface ridge will be along the coast with lower
pressure inland tonight and Friday with small craft advisory
strength west winds in the central and eastern strait tonight.

A front will move into the offshore waters Friday and dissipate
offshore on Saturday. This will be followed by onshore flow Sunday
through Tuesday with high pressure offshore and lower pressure
inland. Schneider

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 6 pm this evening to 3 am pdt Friday
for east entrance u.S. Waters strait of juan de fuca.

Small craft advisory until 3 am pdt Friday for central u.S.

Waters strait of juan de fuca.

Small craft advisory until 2 pm pdt this afternoon for puget
sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46121 11 mi33 min 14 67°F 1019.7 hPa51°F
TCNW1 - 9446484 - Tacoma, WA 25 mi41 min 70°F 54°F1021.1 hPa (+0.0)
TCMW1 - 9446482 - Tacoma Met, WA 25 mi41 min SW 8 G 13
WPOW1 - West Point, WA 41 mi41 min S 15 G 16 64°F 1020.5 hPa (+0.0)53°F
EBSW1 - 9447130 - Seattle, WA 41 mi41 min SSW 9.9 G 12 70°F 55°F1020.6 hPa (+0.0)

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Olympia, Olympia Airport, WA13 mi47 minSSW 1110.00 miMostly Cloudy69°F54°F59%1021.5 hPa
Shelton, Shelton Sanderson Field, WA15 mi48 minSW 1210.00 miMostly Cloudy71°F53°F53%1020.1 hPa
Fort Lewis / Gray U. S. Army Airfield, WA16 mi43 minS 12 G 1710.00 miMostly Cloudy71°F56°F60%1021.3 hPa
Tacoma, Tacoma Narrows Airport, WA17 mi48 minS 11 G 1510.00 miPartly Cloudy71°F51°F49%1020.7 hPa
Tacoma / McChord Air Force Base, WA21 mi43 minSSW 910.00 miMostly Cloudy71°F56°F60%1021.3 hPa
Bremerton, Bremerton National Airport, WA22 mi45 minSSW 11 G 2010.00 miMostly Cloudy72°F52°F50%1021.9 hPa

Wind History from OLM (wind in knots)
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Last 24hrSW75W10W8SW7SW5S7SW6SW7SW6SW6S4S6SW8S6S7S8S7S9S8S10SW9W8SW11
1 day agoN73W8W6SW6SW6S6S4S4S4S3S3S4S4S3S4SW55Calm4W454S8
2 days agoNE76N7NE5NE5NW6N4CalmCalmSE3Calm--CalmCalmCalmCalmCalmCalmE3NW4NE63NE6NE5

Tide / Current Tables for Henderson Inlet, Washington
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Henderson Inlet
Click for Map
Thu -- 02:24 AM PDT     14.20 feet High Tide
Thu -- 02:59 AM PDT     Moonrise
Thu -- 05:36 AM PDT     Sunrise
Thu -- 09:59 AM PDT     -1.62 feet Low Tide
Thu -- 05:09 PM PDT     13.06 feet High Tide
Thu -- 06:23 PM PDT     Moonset
Thu -- 08:58 PM PDT     Sunset
Thu -- 10:13 PM PDT     7.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.812.814.11412.710.57.54.31.3-0.9-1.6-0.81.44.47.810.612.413.112.711.49.67.97.17.4

Tide / Current Tables for Dana Passage, Washington Current
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Dana Passage
Click for Map
Thu -- 02:19 AM PDT     -0.00 knots Slack
Thu -- 02:59 AM PDT     Moonrise
Thu -- 05:36 AM PDT     Sunrise
Thu -- 05:58 AM PDT     -3.15 knots Max Ebb
Thu -- 10:11 AM PDT     0.01 knots Slack
Thu -- 12:47 PM PDT     2.15 knots Max Flood
Thu -- 04:49 PM PDT     -0.01 knots Slack
Thu -- 06:23 PM PDT     Moonset
Thu -- 07:28 PM PDT     -1.51 knots Max Ebb
Thu -- 08:58 PM PDT     Sunset
Thu -- 10:42 PM PDT     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.80.2-0.8-2-2.9-3.2-2.9-2.4-1.5-0.311.92.11.81.30.6-0.2-1.1-1.5-1.5-1.2-0.60.3

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 (18,4,5,8)
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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.