Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Cohassett Beach, 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 7:05AMSunset 7:08PM Sunday September 24, 2017 1:46 AM PDT (08:46 UTC) Moonrise 10:41AMMoonset 8:48PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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 Sat sep 23 2017 combined seas 3 to 5 ft. Bar conditions light. The maximum ebb currents will occur around 745 am and 8 pm Sunday. PZZ100 845 Pm Pdt Sat Sep 23 2017
Synopsis for the northern and central washington coastal and inland waters..Higher pres offshore will result in light onshore flow through Sunday. A weak warm front will cause the flow to become southerly on Monday. The flow will become light northerly on Tuesday due to higher pres over british columbia with lower pres over northern california. Offshore flow will develop on Wed as a thermal trough forms along the coast.

7 Day Forecast for Marine Location Near Cohassett Beach, WA
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location: 46.88, -124.08     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 240347
afdsew
area forecast discussion
national weather service seattle wa
845 pm pdt Sat sep 23 2017

Synopsis High pressure aloft will produce a dry mild day
Sunday. Then an incoming weakening weather system is expected to
bring clouds and a chance of rain later Sunday night and Monday.

Higher pressure aloft is expected to build off the coast Tuesday and
move onshore mid week for a period of sunshine and above average
late september temperatures.

Short term
The positive tilted upper ridge was extending SW from northern
vancouver island this evening. The ridge should offer considerable
sunshine Sunday with seasonable temperatures after areas of morning
clouds and fog.

A shortwave near 135w this evening was dampening out as it was
moving into the ridge. Upstream, another stronger shortwave near
160w is forecast to track into british columbia Sunday night and
Monday. This system should also dampen out as the upper ridge begins
to rebuild Monday, but likely have enough dynamics left for clouds
and a threat of light rain mainly for the coast, olympics and closer
to the canadian border. It should behave like a weak warm front.

The upper ridge is anticipated to build significantly offshore
Tuesday for clearing skies and the start of a warming trend
following a brief cooler day with the warm front's clouds Monday.

Buehner

Long term From the previous edition...

a strong upper ridge will be in control Wednesday and Thursday for
dry and warmer weather. Low level flow will become offshore which
should help highs warm well into the 70s - maybe even lower 80s in
some locations.

The upper ridge will shift inland and an upper trough will reach
the coast Friday. There might be spotty rain near the coast but
the main impact will be to bring some clouds and a few degrees of
cooling.

Westerly flow aloft will prevail Saturday with low level onshore
flow. Highs should be near normal and no fronts or weather systems
are expected. Schneider

Aviation An upper level ridge will bring dry and stable weather
to the region tonight and Sunday. The flow aloft is northerly.

Skies have been clearing this evening with just sct deck around
10,000 ft. May see patchy low clouds or stratus overnight for brief
MVFR conditions. Otherwise,VFR conditions expected through Sunday
afternoon. A warm front will spread more clouds inland Sunday night
into Monday with a chance of light rain, mainly along the coast. 33
ksea...VFR and light N winds at the surface. Patchy low clouds
possible early Sunday for brief MVFR conditions. 33

Marine High pressure over the NE pacific will maintain light
onshore flow through Sunday. A warm front will clip the area on
Monday with possible small craft advisory winds over the coastal
waters. The flow will turn offshore by midweek as a thermal trough
forms along the coast. 33

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 2 mi70 min WNW 4.1 G 5.1 56°F 58°F1020.4 hPa
46211 - Grays Harbor, WA (036) 9 mi46 min 58°F4 ft
TOKW1 - 9440910 - Toke Point, WA 13 mi46 min N 2.9 G 4.1 53°F 61°F1020.5 hPa (+0.5)
46243 - Clatsop Spit, OR - 162 46 mi46 min 59°F3 ft
46100 47 mi176 min N 3.9 58°F 60°F1019.9 hPa
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 48 mi56 min NW 3.9 G 3.9 57°F 57°F3 ft1020.1 hPa (+0.3)
46096 49 mi136 min NNE 1.9 G 1.9 51°F 57°F1020.2 hPa
ASTO3 - 9439040 - Astoria, OR 49 mi46 min NE 1.9 G 2.9 57°F 66°F1019.8 hPa (+0.4)

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA9 mi53 minN 08.00 miFair51°F51°F100%1021 hPa

Wind History from HQM (wind in knots)
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Last 24hrS5CalmCalmCalmSW5S4S4S4SW3SW5SW6SW6SW9SW9W8W8W5W4W3CalmCalmCalmCalmCalm
1 day agoCalmE4NE5NE4NE4CalmNE3NE5CalmSE5S4SW7SW10SW9SW11SW10SW8SW8SW7S6S7S5S6SW6
2 days agoCalmNE4NE4NE5NE6NE3NE5NE4NE4NE3E6N4S4SW9SW9SW11SW6SW5CalmCalmCalmNW3CalmCalm

Tide / Current Tables for Bay City, South Bay, Grays Harbor, Washington
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Bay City
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Sun -- 04:24 AM PDT     8.46 feet High Tide
Sun -- 07:06 AM PDT     Sunrise
Sun -- 09:50 AM PDT     2.18 feet Low Tide
Sun -- 11:40 AM PDT     Moonrise
Sun -- 04:17 PM PDT     9.36 feet High Tide
Sun -- 07:09 PM PDT     Sunset
Sun -- 09:48 PM PDT     Moonset
Sun -- 10:30 PM PDT     0.59 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.54.46.27.68.48.37.25.53.82.62.22.84.15.87.58.79.39.17.85.83.71.90.80.7

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Sun -- 01:27 AM PDT     1.96 knots Max Flood
Sun -- 04:39 AM PDT     -0.00 knots Slack
Sun -- 07:06 AM PDT     Sunrise
Sun -- 07:44 AM PDT     -2.41 knots Max Ebb
Sun -- 10:36 AM PDT     0.00 knots Slack
Sun -- 11:40 AM PDT     Moonrise
Sun -- 01:17 PM PDT     1.90 knots Max Flood
Sun -- 04:35 PM PDT     -0.00 knots Slack
Sun -- 07:09 PM PDT     Sunset
Sun -- 08:02 PM PDT     -3.02 knots Max Ebb
Sun -- 09:48 PM PDT     Moonset
Sun -- 11:21 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.91.91.60.8-0.5-1.7-2.3-2.4-1.9-0.80.51.41.91.81.40.7-0.5-1.9-2.8-3-2.8-1.8-0.5

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 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.