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Marine Weather and Tides Coupeville, WA Version 3.4

What's New / NOTES 10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

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Sunrise 7:20AM

Sunset 4:30PM

Saturday November 17, 2018 3:11 PM PST (23:11 UTC)

Moonrise 2:30PM

Moonset 12:47AM

Illumination 74%

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.

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7 Day Forecast for Marine Location Near Coupeville, WA

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Area Discussion for - Seattle, WA

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Fxus66 ksew 171820 afdsew area forecast discussion national weather service seattle wa 950 am pst Sat nov 17 2018... Corrected Synopsis A dry weather pattern with areas of night and morning fog will persist into early next week. Overnight temperatures will be on the cooler side, dropping into the 30s and even upper 20s by Sunday morning at some locations. A series of weather systems will bring wet weather by the middle of next week through the holiday weekend. Short term A strong ridge of high pressure will maintain dry weather over the pacific northwest through at least Monday or Tuesday of next week. Offshore flow will increase today with a 1038 mb surface high over southern british columbia extending east of the cascades. The flow is more northerly this morning with the pdx-bli gradient around -5 mb. Meso models show northely winds picking up this afternoon, around 10 to 20 mph. Drier air is already filtering into the area, with only patchy fog coverage this morning. This will clear out over the next couple hours with mostly sunny skies the rest of the day. Highs will reach the low 50s. Little change in temperatures or the overall weather pattern is expected through Monday. The flow will become more easterly tonight through Monday, allowing the northerly breeze to ease. Radiational cooling will be more efficient, with temperatures falling into the 30s or below freezing in cold pocket locations like olympia and shelton. While drier air is filtering into western washington, cooler low temperatures should allow fog to increase in coverage the next couple days. However, offshore flow and lower dew points will hinder widespread development. Fog or freezing fog may be locally dense in prone valleys, especially around the southwest interior and the interior south puget sound. Highs Sunday and Monday will reach the low to mid 50s with any morning fog burning off by early afternoon. Mercer Long term Previous discussion... Tuesday looks like the last dry day for awhile. A weather system will approach the coast during the day, and clouds will increase across the area. Highs on Tuesday will again be in the low to mid 50s. The GFS and euro differ slightly about when the rain will begin, with the euro a bit slower. It does seem rain will start some time on Wednesday, so have kept the forecast of rain likely for Wednesday. Model timing varies quite a bit after that, and so do the forecast tracks of the various fronts, with the euro sending most of the

energy into oregon and the GFS moving the fronts right through washington. For now a the forecast is for rain at times, with high pops but relatively low qpf, and there will be some dry periods between fronts. Highs will be somewhat lower than what we have been experiencing, mostly in the 45 to 50 range. The snow level will fall to 4000 to 5000 feet, which means most ski areas and passes will get snow at times. Burke Aviation High pressure and offshore flow will lead to dry and stable conditions across western wa. The flow aloft is northerly with E NE winds at the surface. There is patchy shallow fog in the interior this morning which will scatter out by the afternoon. Otherwise, expectVFR conditions. Patchy low clouds will likely reform overnight. 33 ksea... Patchy low clouds near the terminal this morning will scatter out forVFR conditions. N NE winds to 8-12kt. Dry conditions tonight. 33 Marine Offshore flow will prevail across western wa through early next week due to strong high pressure east of the cascades. Winds are N NE over the waters with small craft advisories in effect, specifically for the west entrance and adjacent coastal waters, northern inland waters, puget sound and hood canal. Winds will ease late this afternoon. The next frontal system will approach the region on Tuesday then split and weaken as it moves inland on Wednesday. 33 Hydrology High pressure is expected to maintain the dry weather pattern through around Tuesday of next week. A parade of frontal systems will affect the region starting around Wednesday of next week through the holiday weekend. Models show a progressive and split flow pattern, which will tend to weaken these systems. Rain amounts with each system do not appear to be sufficient to cause flooding on area rivers. River flooding is not expected on area rivers through the next 7 days. Sew watches warnings advisories Wa... None. Pz... Small craft advisory until 4 pm pst this afternoon for coastal waters from CAPE flattery to james island out 10 nm- northern inland waters including the san juan islands-west entrance u.S. Waters strait of juan de fuca. Small craft advisory until 5 pm pst this afternoon for puget sound and hood canal.

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
PTWW1 - 9444900 - Port Townsend, WA	8 mi	41 min	W 5.1 G 7
SISW1 - Smith Island, WA	10 mi	81 min	NNE 11 G 12	48°F			1026.5 hPa (-1.5)	33°F
PBFW1 - Padilla Bay Reserve, WA	21 mi	41 min	N 5.1	48°F			1026 hPa	37°F
46088 - New Dungeness, WA (Hein Bank)	26 mi	51 min	SW 3.9 G 5.8	48°F	49°F	1 ft	1026.3 hPa	34°F
FRDW1 - 9449880 - Friday Harbor, WA	28 mi	95 min	NE 2.9 G 8.9	49°F	50°F		1026.7 hPa
46120	35 mi	39 min	NE 5.8	49°F			1024.6 hPa	40°F
46118	35 mi	76 min		49°F			1025.8 hPa	32°F
PTAW1 - 9444090 - Port Angeles, WA	40 mi	95 min	E 5.1 G 7	48°F	49°F		1026.9 hPa
WPOW1 - West Point, WA	41 mi	71 min	N 17 G 18	48°F			1025.9 hPa (-1.4)	39°F
CPMW1	44 mi	41 min	NNW 6 G 8
CHYW1 - 9449424 - Cherry Point, WA	45 mi	41 min					1026.6 hPa
EBSW1 - 9447130 - Seattle, WA	47 mi	41 min	NW 7 G 12	53°F	53°F		1025 hPa

Wind History for Port Townsend, WA

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Whidbey Island Naval Air Station - Ault Field, WA	10 mi	15 min	NNW 7	10.00 mi	A Few Clouds	53°F	34°F	48%	1027 hPa
Burlington/Mount Vernon, Skagit Regional Airport, WA	22 mi	16 min	NW 4	10.00 mi	Fair	52°F	33°F	50%	1025.7 hPa

Wind History from NUW (wind in knots)

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Tide / Current Tables for Coupeville, Washington

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Tide / Current Tables for Point Wilson, 2.3 miles NE of, Washington Current

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Weather Map and Satellite Images

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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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Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Seattle, WA (18,4,5,8)

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Ground Weather Radar Station Seattle/Tacoma, WA

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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.