Monday, August21, 2017 L-36.com


Marine Weather and Tides
Junction City, 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 6:20AMSunset 8:15PM Monday August 21, 2017 6:27 PM PDT (01:27 UTC) Moonrise 5:11AMMoonset 7:25PM 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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PZZ110 Grays harbor bar- 250 pm pdt Mon aug 21 2017 combined seas 4 or 5 ft, except building to 6 ft during the very strong ebb current Tuesday morning. Bar conditions light. The maximum ebb currents will occur around 515 pm today and 530 am Tuesday. PZZ100 250 Pm Pdt Mon Aug 21 2017
Synopsis for the northern and central washington coastal and inland waters..High pres off the coast and lower pres east of the cascades will maintain onshore flow across western washington into this weekend. A weak system moving into british columbia will strengthen the onshore flow Tuesday night through Wednesday night.

7 Day Forecast for Marine Location Near Junction City, WA
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location: 46.97, -123.78     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 212134
afdsew
area forecast discussion
national weather service seattle wa
234 pm pdt Mon aug 21 2017

Synopsis
A ridge of high pressure and warmer than normal temperatures will start
the week. A passing upper level storm system in southwest bc will
bring cooler weather, clouds, and a few showers by mid-late week.

Then a ridge of high pressure returns by the weekend along with
temperatures climbing well above normal.

Short term
As forecast, a solar eclipse occurred across the area today.

During the peak of the eclipse, temperatures fell 3-5 degrees.

However this didn't do much to inhibit the overall warming today
as the readings quickly jumped back up as full sunshine returned.

Presently at about 230 pdt, readings from the 60s on the coast to
mid to upper 70s inland, with a few lower 80s in the warm spots.

All in all, a fairly normal day for the latter portion of august.

Tomorrow should be similar to today, minus of course the moon
covering up most of the sun. The weather will bring temperatures a
few degrees warmer than today with heights remaining at or above
585dm. They will fall along the coast however. At 500 mb a trough
of low pressure will be pushing towards the central bc coast and
help heights across the coastal areas to trend downwards on
Tuesday here as well. Heights will continue to fall on Wednesday
across the area but generally still above 574dm for everyone.

There will be increased cloud cover and a deep marine layer with
stronger onshore flow. This will bring a much cooler day by around
5 degrees or so to the area. Some suggestion of spotty precip on
Wednesday afternoon but overall not too impressive given how high
the 500 mb heights are, but could have a few showers here and
there but not expecting rain of significance. Johnson

Long term
By Thursday the upper trough of low pressure will move onshore
just north of vancouver island. Heights will fall even more and a
cool day is expected. This could be the day that breaks the
consecutive days above 70 streak for seattle, but the present
forecast shows highs around 71 degrees, so it will be close. The
models suggesting a drier outcome than previously, have decreased
chances of rain and cloud cover. At best a low end chance for rain
and amounts not significant at all. The greatest change to our
weather will be cooler and cloudier conditions on Thursday.

Quickly behind this departing upper trough, ridging at 500 mb will
build into the area and send heights climbing again. Friday will
be the transitional day as readings are near normal. Then for the
upcoming weekend, indications are that well above normal
temperatures will return to the area. Latest model guidance
showing readings in the low to mid 80s around the seattle area and
perhaps near 90 south of seattle for Saturday, Sunday and into
Monday. Will have to continue watching this trend towards warmer
conditions. This represents a forecaster several degrees warmer
than the previous one. Climatologically it would be late to have
highs around 90 in seattle, but not unheard of. Johnson

Aviation Light west flow aloft over western washington this
afternoon will back to southwest tonight and continue Tuesday, as
an upper ridge over the pacific northwest moves east. At the
surface, high pressure remains offshore with lower pressure east
of the cascades for weak low level onshore flow.

Low stratus will bring areas of ifr ceilings to the coastal area
tonight and Tuesday morning, in the shallow surface-based marine
layer. Otherwise there will be no significant cloud cover below
12,000 ft.

Ksea... North to northwest wind 6-12 kt, becoming north to
northeast 4-10 kt around sunset. Winds should start light and
southerly Tuesday morning, then become west to northwest around
midday. The terminal should remain nearly cloud-free through
Tuesday. Mcdonnal

Marine High pressure off the coast with lower pressure east of
the cascades will maintain varying degrees of low level onshore
flow across western washington into the weekend.

Small craft advisory west winds are likely in the central and
eastern strait of juan de fuca tonight. Gale westerlies are
possible in the strait Tuesday and Wednesday nights as a weak
upper level trough approaches british columbia, and a gale watch
is now in effect for Tuesday night. The upper trough will move
inland Thursday with weak to moderate onshore flow Thursday
through Saturday. Mcdonnal

Sew watches warnings advisories
Wa... None.

Pz... Gale watch from Tuesday evening through late Tuesday night for
central u.S. Waters strait of juan de fuca-east entrance
u.S. Waters strait of juan de fuca.

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

Waters strait of juan de fuca-east entrance u.S. Waters
strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 18 mi52 min NNW 14 G 16 56°F 55°F1016.8 hPa
TOKW1 - 9440910 - Toke Point, WA 21 mi40 min N 18 G 19 70°F 64°F1015.7 hPa
46211 - Grays Harbor, WA (036) 26 mi28 min 55°F4 ft
46099 42 mi98 min NNW 12 56°F 58°F1017.6 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA10 mi35 minSW 119.00 miFair72°F59°F64%1016.4 hPa

Wind History from HQM (wind in knots)
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Last 24hrW7W8W6CalmW3W3W3CalmNE5CalmNE3CalmCalmNE5E3CalmW5S6SW5W12SW13SW11SW9SW11
1 day agoW10W9W4W3W5NW3SW4CalmCalmCalmCalmCalmCalmCalmSE3SE4S5S5W9W11W16W12
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2 days agoW10W10W10W9W9W8W6NW4NW4Calm3CalmCalmSW6W7W8W6W11W13W16W18W16
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Tide / Current Tables for Cosmopolis, Chehalis River, Grays Harbor, Washington
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Cosmopolis
Click for Map
Mon -- 01:17 AM PDT     11.36 feet High Tide
Mon -- 06:10 AM PDT     Moonrise
Mon -- 06:20 AM PDT     Sunrise
Mon -- 07:41 AM PDT     -2.23 feet Low Tide
Mon -- 11:31 AM PDT     New Moon
Mon -- 02:22 PM PDT     10.07 feet High Tide
Mon -- 07:54 PM PDT     0.87 feet Low Tide
Mon -- 08:14 PM PDT     Sunset
Mon -- 08:24 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.411.3119.473.90.7-1.7-2.1-0.81.54.26.88.9109.88.56.541.70.91.946.4

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Mon -- 01:08 AM PDT     -0.01 knots Slack
Mon -- 04:44 AM PDT     -4.14 knots Max Ebb
Mon -- 06:12 AM PDT     Moonrise
Mon -- 06:22 AM PDT     Sunrise
Mon -- 08:04 AM PDT     0.01 knots Slack
Mon -- 11:29 AM PDT     2.92 knots Max Flood
Mon -- 11:31 AM PDT     New Moon
Mon -- 02:11 PM PDT     -0.00 knots Slack
Mon -- 05:15 PM PDT     -2.99 knots Max Ebb
Mon -- 08:06 PM PDT     0.00 knots Slack
Mon -- 08:16 PM PDT     Sunset
Mon -- 08:25 PM PDT     Moonset
Mon -- 11:20 PM PDT     2.43 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.70.3-1.5-3-3.9-4.1-3.3-1.8-0.11.32.32.82.81.90.3-1.2-2.4-3-2.7-1.6-0.11.122.4

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 (21,6,7,8)
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Ground Weather Radar Station Portland, OR
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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.