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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 7:04AM

Sunset 5:43PM

Thursday February 21, 2019 1:36 PM PST (21:36 UTC)

Moonrise 8:40PM

Moonset 8:34AM

Illumination 94%

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 211728 afdsew area forecast discussion national weather service seattle wa 928 am pst Thu feb 21 2019 Synopsis Dry northerly flow will continue today for sunny skies and quiet weather. A frontal system will arrive from the northwest on Friday. A cool upper trough will follow the front for the weekend into the early part of next week. Low snow levels will continue through the period. Short term today through Saturday Dry, northerly flow will prevail today for sunny skies. We're off to a chilly start (temps in the 20s to 30s) but we'll warm back up into the lower to mid 40s this afternoon. The current forecast is on track. 33 previous discussion... The leading edge of the next frontal system looks to hold off until early Friday morning with best threat of widespread precip waiting until the late morning to afternoon hours. Interior snow levels will be pretty low during the morning hours... So any precip that kicks off early will likely be snow or a rain snow mix. As already mentioned however... Lowland amounts during this time period are expected to be light. By the time pops climb into likely category... Snow levels will have jumped to or near 1000 ft... Almost 2000 ft along the coast... And as such remainder of precip expected to fall as rain. The front moves on Friday night but a broad area of upper level low pressure will remain... Keeping an active... Showery period over the CWA for the bulk of the weekend. As the core upper level low finally approaches the area Sunday... The system looks to stall. This will keep the prospect for showers in the forecast for the bulk of the cwa... However model disagreement on the actual position of the low may allow for the northernmost quarter of the CWA to meet with dry conditions. Given model disagreement... Confidence in this is fairly low... But no harm in positive thinking at this point in the winter. Snow levels during the short term will oscillate between 1000-2000 ft during the day and 500 ft to near sea level during the overnight hours. As such... The threat for snow or mixed precip never really goes away. The plus side of this is that any lowland snow that does occur will be minimal with not much in the way of accumulations expected... And any localized accumulations that do occur will be gone by mid to late afternoon. Adding more proof to minimizing any snow threat will be both high and low temps throughout the period... With highs in the low 40s and overnight morning lows either right around freezing or 2-3 degrees above. At the very least... One can surmise that the gradual march into... Well... March may finally be taking a bit of the sting out of our lingering winter weather. Smr Long term Sunday through Wednesday Previous discussion... Models fall seriously out of sync for Monday... As the ECMWF takes the upper low out into the pacific and allows for a minor upper level ridge to take root Monday into Tuesday. The GFS shows this happening too... Just almost 24 hours later than its euro counterpart. And the current runs remain out of phase like this

for the remainder of the forecast period... Although... Again... Their general patterns remain fairly similar... Generally dry conditions early next week followed by a return to active weather offset by a gradual climb in snow levels and daytime highs during the middle of the week. Needless to say... Even though specifics are hard to come by and confidence remains low... The general trend seems to show that any future lowland appearances of that other four letter s word... Snow... May have to wait until next winter. Smr Aviation North to northeasterly flow will ease across the north interior, and remain generally below 10 to 15 kt across western washington. Patchy stratus is nearly dissipated andVFR skies are expected through this evening. Light flow aloft will become moderate southerly flow tonight under high pressure ahead of a frontal system. An upper trough and associated surface front will move into the region Friday morning. Light rain will develop by 18z Friday at most TAF locations, with areas of MVFR cigs. Precipitation will become showery but clouds will persist. Ksea... North wind to 10 kt.VFR skies through most of tonight. High and mid-level clouds increase tonight and lower to MVFR toward 15- 18z Friday as rain spreads into the area with the next frontal system. Surface winds n-ne 5 to 10 knots today shifting to southerly near or after 06z tonight. Dtm Marine Northeasterly offshore flow will continue to ease this afternoon and turn southerly tonight as high pressure over british columbia shifts to the southeast and a front approaches from the northwest. Westerly swell 10-12 feet will continue to subside this afternoon and evening. The gradients in the strait and the northern interior waters have eased and will continue to remain below small craft criteria. The aforementioned frontal system will move through the area on Friday. A trailing weak low over haida gwaii will move to oregon Saturday and Saturday night. Northeasterly offshore flow will develop on Sunday and continue into Monday with high pressure over british columbia and low pressure over oregon. Schneider dtm sb Hydrology River flooding is not expected for the next 7 days. Sew watches warnings advisories Wa... None. Pz... Small craft advisory for hazardous seas until 8 pm pst this evening for coastal waters from CAPE flattery to james island 10 to 60 nm-coastal waters from CAPE flattery to james island out 10 nm-coastal waters from james island to point grenville 10 to 60 nm-coastal waters from james island to point grenville out 10 nm-coastal waters from point grenville to CAPE shoalwater 10 to 60 nm-coastal waters from point grenville to CAPE shoalwater out 10 nm. Small craft advisory for rough bar until 8 pm pst this evening for grays harbor bar.

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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	61 min	WSW 9.9 G 12	42°F	46°F		1021.6 hPa
SISW1 - Smith Island, WA	10 mi	47 min	N 1.9 G 2.9	41°F			1020.9 hPa (-0.5)	25°F
PBFW1 - Padilla Bay Reserve, WA	21 mi	67 min	SSW 1.9	42°F			1021 hPa	31°F
46088 - New Dungeness, WA (Hein Bank)	26 mi	47 min	N 3.9 G 7.8	42°F	46°F	1 ft	1021 hPa (-0.5)	20°F
FRDW1 - 9449880 - Friday Harbor, WA	28 mi	61 min	NNE 6 G 8	41°F	46°F		1021 hPa
46118	35 mi	107 min			43°F
46120	35 mi	46 min	NE 3.9	41°F			1020.2 hPa	27°F
PTAW1 - 9444090 - Port Angeles, WA	40 mi	61 min	NE 4.1 G 7	45°F	46°F		1021.3 hPa
WPOW1 - West Point, WA	41 mi	37 min	N 12 G 14	41°F			1020.9 hPa (-0.3)	28°F
CPMW1	44 mi	61 min	NE 5.1 G 8	42°F	45°F
CHYW1 - 9449424 - Cherry Point, WA	45 mi	49 min					1020.9 hPa

Wind History for Port Townsend, WA

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NW4 G9

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NW3 G7

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W2 G9

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E8 G12

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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	41 min	WNW 5	10.00 mi	Partly Cloudy	44°F	27°F	51%	1022 hPa
Burlington/Mount Vernon, Skagit Regional Airport, WA	22 mi	62 min	SSE 4	10.00 mi	Fair	41°F	30°F	66%	1021 hPa

Wind History from NUW (wind in knots)

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N8

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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 (16,3,4,5)

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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.