Monday, April23, 2018 L-36.com


Marine Weather and Tides
Junction City, WA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:09AMSunset 8:17PM Monday April 23, 2018 2:38 AM PDT (09:38 UTC) Moonrise 12:08PMMoonset 2:18AM Illumination 56% Phase: First Quarter Moon; Moon at 8 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- 845 pm pdt Sun apr 22 2018 combined seas 7 to 9 ft. Bar conditions moderate. Maximum ebb currents will occur around 1130 pm tonight and 1145 am Monday. PZZ100 845 Pm Pdt Sun Apr 22 2018
Synopsis for the northern and central washington coastal and inland waters..High pressure is centered over british columbia. Thermally induced low pressure will set up along the oregon and washington coasts and persist into Wednesday morning. The thermal low pressure will move inland on Thursday.

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 230411
afdsew
area forecast discussion
national weather service seattle wa
911 pm pdt Sun apr 22 2018

Synopsis An offshore upper ridge will build into the pacific
northwest on Monday and remain there through Thursday, bringing a
stretch of sunny days to western washington. Low level offshore
flow will result in the warmest weather since last september,
with highs in the 70s over much of the area. An upper trough will
bring a return to more seasonal weather Friday and the weekend.

Short term Clear skies and a strong warming trend are forecast
through Thursday. Record high temperatures are possible for some
places on Wed and thu.

A fairly strong upper level ridge axis will move eastward across
western washington on Monday, with 500 mb heights under the ridge
axis near 574 decameters. The ridge will then linger over the
pacific northwest until about Thursday. Meanwhile at the surface,
a thermal pressure trough will develop along the coast and remain
in place until Thursday morning, barring minor diurnal
fluctuations. 850 mb temps will rise from around +7c on Monday to
around +14c on Wednesday. As we have been advertising for several
days now, this will result in sunny warm days with highs well
into the 70s away from cooler shorelines over northwest
washington. Haner

Long term From previous discussion: the models are a little
inconsistent -- and hence there is some uncertainty -- with
regard to the transition from the warm weather to a more typical
spring pattern. The models agree that the upper ridge will shift
further east late in the week, and an offshore closed upper low
will begin moving east toward northern california; that will
induce a switch to onshore flow across western washington and
bring a chance of showers to the area in the high-based
instability with southerly flow aloft. The difference in the
models is primarily the timing of this transition, with the gfs
showing a switch to onshore flow beginning Thursday afternoon, and
the ECMWF delaying that until Thursday night. For now we will
stick with the current forecast, which reflects the slower timing
of the ecmwf. The models all agree that the right forecast for
Friday through Sunday is onshore flow and a chance of showers as
the low moves inland, followed most likely by another trough from
the west during the weekend. Mcdonnal

Aviation A fairly strong upper ridge axis will move eastward
across western washington on Monday. Light to moderate southerly
flow aloft through Monday will become light southerly on Monday
night, and drying low-level offshore flow will strengthen. The air
mass will be dry and stable, with few or no clouds.

Ksea... Clear skies and a northerly surface wind component will
continue for the next 30+ hours. Haner

Marine Thermally induced low pressure will set up along the
oregon and washington coasts tonight and persist through about
Wednesday night. This pattern leads to northerly offshore flow.

Will probably see small craft advisory easterly winds at the west
entrance to the strait of juan de fuca by daybreak Tuesday. The
thermal low pressure will move inland late Thursday with onshore
flow and cooler marine air pushing back into the area. Haner

Sew watches warnings advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 18 mi62 min E 6 G 7 47°F 52°F1026.7 hPa
TOKW1 - 9440910 - Toke Point, WA 21 mi56 min E 8 G 8.9 46°F 53°F1026.8 hPa
46211 - Grays Harbor, WA (036) 26 mi38 min 51°F6 ft
46099 42 mi108 min N 9.7 51°F 51°F1026.2 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA10 mi45 minENE 48.00 miFair42°F39°F92%1027 hPa

Wind History from HQM (wind in knots)
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Last 24hrCalmCalmCalmNE3CalmE3E3CalmS4S6S4SW6W11W12W10W11W7NW5N5SW4CalmN3NE3NE4
1 day agoSW16
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W5W11W9W9SW10CalmSW9W12W11W9W9W11W10W8W8NW7NW9NW9NW7N3
2 days agoCalmNE4CalmNE3NE3E7E4E3CalmS3SW11W6SW5SW10SW9SW7S6SE7E8SE5S14S15SW15W13
G21

Tide / Current Tables for Cosmopolis, Chehalis River, Grays Harbor, Washington
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Cosmopolis
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Mon -- 01:50 AM PDT     3.76 feet Low Tide
Mon -- 03:17 AM PDT     Moonset
Mon -- 06:12 AM PDT     Sunrise
Mon -- 07:51 AM PDT     9.69 feet High Tide
Mon -- 01:08 PM PDT     Moonrise
Mon -- 02:38 PM PDT     0.19 feet Low Tide
Mon -- 08:14 PM PDT     Sunset
Mon -- 09:31 PM PDT     8.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.24.23.84.66.17.58.69.49.79.17.75.83.81.90.50.31.434.76.588.88.98.1

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Mon -- 02:07 AM PDT     0.00 knots Slack
Mon -- 03:19 AM PDT     Moonset
Mon -- 04:41 AM PDT     1.20 knots Max Flood
Mon -- 06:14 AM PDT     Sunrise
Mon -- 07:49 AM PDT     -0.00 knots Slack
Mon -- 11:40 AM PDT     -2.91 knots Max Ebb
Mon -- 01:09 PM PDT     Moonrise
Mon -- 02:59 PM PDT     0.00 knots Slack
Mon -- 06:44 PM PDT     1.94 knots Max Flood
Mon -- 08:16 PM PDT     Sunset
Mon -- 09:25 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.8-1.1-0.10.71.11.210.7-0.2-1.4-2.3-2.8-2.9-2.3-1.2011.61.91.91.50.5-0.6-1.4

Weather Map and Satellite Images
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wmap_P
GOES Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Seattle, WA (5,6,7,8)
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Ground Weather Radar Station Portland, OR
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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.