Sunday, July23, 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 5:43AMSunset 8:59PM Sunday July 23, 2017 1:32 AM PDT (08:32 UTC) Moonrise 5:10AMMoonset 8:15PM 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- 844 pm pdt Sat jul 22 2017 combined seas 2 to 4 ft. Bar conditions light. Maximum ebb currents will occur around 5 am and 530 pm on Sunday. The Sunday morning ebb will be very strong. PZZ100 844 Pm Pdt Sat Jul 22 2017
Synopsis for the northern and central washington coastal and inland waters..High pressure will be offshore with lower pressure inland through Thursday.

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 230330
afdsew
area forecast discussion
national weather service seattle wa
830 pm pdt Sat jul 22 2017

Synopsis A weak upper trough will bring clouds and cooler
weather on Sunday. High pressure aloft will build over the area
Monday and Tuesday for a warming trend. Stronger onshore flow
will cool highs back to near normal Wednesday through Friday.

Short term Low clouds have mostly cleared, even at the coast.

They should fill back in tonight as a weak upper trough swings
through and low level flow increases. Sunday will start out
mostly cloudy. Clouds will linger into the afternoon for many
areas but eventually they will scatter as the upper trough exits
to the east. Highs Sunday will cool several degrees over the
interior - back to near normal.

An upper ridge will build over the area Monday and Tuesday for
sunny days and warmer weather. Highs should be in the 70s at the
coast and mostly in the 80s for the interior. Tuesday looks like
the warmest day for most areas with a marine push beginning
Tuesday night. Schneider

Long term Previous discussion... The overall long-wave pattern
with the upper ridge over the intermountain west and the trough in
the vicinity of 140-150w looks to continue through the rest of
next week. This pattern leaves western washington primarily in a
sw flow aloft. The progs concur on a sequence of weak shortwaves
rotating out of the offshore long-wave trough with the first
arriving Tuesday night and Wednesday. Heights aloft decline and
low level onshore flow increases for another surge inland of
marine clouds with moderating high temperatures.

Guidance continues to hint at the possibility of convection near the
cascade crest Wednesday night. Upon collaboration with neighboring
forecast offices, will increase a threat of thunderstorms there.

Progs differ on timing, but a few more ejecting shortwaves should
maintain low level onshore flow into Thursday and Friday for more of
the morning cloud afternoon Sun regime with close to seasonal
temperatures. The coming weekend may offer the start of a warming
trend as heights aloft rise. No rain is in sight, so the dry streak
in seattle on day 35 today looks to extend through at least the
coming week. Buehner

Aviation Westerly flow aloft over western washington this
evening will continue tonight and Sunday, as the broad upper
ridge over the area shifts east and a weak upper trough moves over
the region. At the surface, onshore flow will continue with high
pressure offshore and lower pressure inland. The air mass is
stable.

There is no significant cloud cover over western washington this
evening. Low level moisture will increase tonight though, with
widespread low-end MVFR and local ifr ceilings likely beginning
09z-12z most areas. Gradual improvement is expected Sunday
afternoon, with widespreadVFR conditions late in the afternoon.

Ksea... Low clouds will likely move inland or develop over the area
late tonight, with ceilings 010-015 likely from roughly 12z
through 20z. Northerly wind 7-13 kt easing to 5-10 kt around
midnight. Mcdonnal

Marine Varying amount of onshore flow will prevail for the next
several days with high pressure offshore and lower pressure inland.

The central and eastern strait of juan de fuca should have small
craft advisory west winds most evenings, and gale force winds are
possible there Tuesday evening. The coastal waters will also have
small craft advisory northwest winds at times for the next few
days, especially the outer waters. Mcdonnal

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 6 am Sunday to 6 am pdt Monday for
coastal waters from CAPE flattery to james island 10 to 60
nm-coastal waters from james island to point grenville 10
to 60 nm-coastal waters from point grenville to cape
shoalwater 10 to 60 nm.

Small craft advisory from noon Sunday to midnight pdt Sunday
night for coastal waters from CAPE flattery to james island
out 10 nm-coastal waters from james island to point
grenville out 10 nm-coastal waters from point grenville to
cape shoalwater out 10 nm-west entrance u.S. Waters strait
of juan de fuca.

Small craft advisory until 3 am pdt Sunday 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 2 mi57 min NNW 21 G 26 57°F 58°F1020 hPa
46211 - Grays Harbor, WA (036) 9 mi63 min 59°F4 ft
TOKW1 - 9440910 - Toke Point, WA 13 mi45 min NNW 8.9 G 12 60°F 66°F1020.3 hPa
46243 - Clatsop Spit, OR - 162 46 mi33 min 62°F4 ft
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 46 mi43 min NNW 18 G 21 59°F 60°F4 ft1020.3 hPa (-0.5)
46100 47 mi163 min NNW 14 62°F 62°F1020.4 hPa
46096 49 mi123 min N 18 G 21 55°F 60°F1020.9 hPa
ASTO3 - 9439040 - Astoria, OR 49 mi45 min NNW 6 G 7 63°F 70°F1019.4 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA9 mi40 minW 89.00 miOvercast60°F59°F96%1020.3 hPa

Wind History from HQM (wind in knots)
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Last 24hrSE3SE4E4E43CalmCalm4CalmW6SW8W8SW11SW11SW13SW11SW12W10W9W8
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1 day agoNE5NE4CalmNE3E4NE4NE4E4S3W5W6W10W11W11W10W9W7W6W4SW4SW5SW3CalmCalm
2 days agoSW9W4SW3SW3S3S5S5SW5S8S5SW8SW10SW11SW13SW10SW10SW10SW9SW8SW8SW7CalmCalmCalm

Tide / Current Tables for Bay City, South Bay, Grays Harbor, Washington
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Bay City
Click for Map
Sun -- 12:55 AM PDT     11.00 feet High Tide
Sun -- 02:47 AM PDT     New Moon
Sun -- 05:45 AM PDT     Sunrise
Sun -- 06:10 AM PDT     Moonrise
Sun -- 07:27 AM PDT     -2.89 feet Low Tide
Sun -- 02:19 PM PDT     8.69 feet High Tide
Sun -- 07:27 PM PDT     1.89 feet Low Tide
Sun -- 08:58 PM PDT     Sunset
Sun -- 09:15 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.51110.1851.8-1-2.7-2.7-1.30.93.55.97.88.68.47.15.33.32.12.13.25.17.3

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Sun -- 01:17 AM PDT     -0.00 knots Slack
Sun -- 02:47 AM PDT     New Moon
Sun -- 04:59 AM PDT     -4.48 knots Max Ebb
Sun -- 05:45 AM PDT     Sunrise
Sun -- 06:10 AM PDT     Moonrise
Sun -- 08:22 AM PDT     0.01 knots Slack
Sun -- 11:46 AM PDT     3.02 knots Max Flood
Sun -- 02:35 PM PDT     -0.01 knots Slack
Sun -- 05:33 PM PDT     -2.75 knots Max Ebb
Sun -- 08:14 PM PDT     0.00 knots Slack
Sun -- 08:59 PM PDT     Sunset
Sun -- 09:15 PM PDT     Moonset
Sun -- 11:18 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
1.80.5-1.3-3-4.1-4.5-3.9-2.5-0.712.22.932.41-0.6-1.9-2.6-2.7-1.8-0.3122.4

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 (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.