Thursday, December12, 2019
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Marine Weather and Tides
Anacortes, WA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:51AMSunset 4:17PM Thursday December 12, 2019 3:37 PM PST (23:37 UTC) Moonrise 4:56PMMoonset 8:18AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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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PZZ133 Northern Inland Waters Including The San Juan Islands- 233 Pm Pst Thu Dec 12 2019
Tonight..S wind 5 to 15 kt. Wind waves 2 ft or less. Showers likely.
Fri..SW wind to 10 kt becoming W in the afternoon. Wind waves 1 ft or less. Rain likely in the morning then a chance of rain in the afternoon.
Fri night..S wind to 10 kt. Wind waves 1 ft or less. A chance of rain.
Sat..SE wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Sat night..Light wind becoming N to 10 kt after midnight. Wind waves less 1 ft or less.
Sun..Light wind. Wind waves less than 1 ft.
Sun night..Light wind. Wind waves less than 1 ft.
Mon..E wind to 10 kt. Wind waves 1 ft or less.
Tue..E wind to 10 kt. Wind waves 1 ft or less.
PZZ100 233 Pm Pst Thu Dec 12 2019
Synopsis for the northern and central washington coastal and inland waters..Winds will ease overnight in the wake of a frontal passage. A weak surface ridge will build over the coastal waters on Friday and persist into the weekend for a transition to quieter conditions across area waters. Low level offshore flow is expected to develop early next week as surface ridging builds east of the cascades.


7 Day Forecast for Marine Location Near Anacortes, WA
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location: 48.51, -122.6     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 122248 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 248 PM PST Thu Dec 12 2019

SYNOPSIS . A frontal system will move east of the area tonight with cool and unsettled weather Friday and Saturday. A weak warm front will result in some areas of light rain on Sunday. Upper level ridging will likely support a generally dry start to next week followed by a return to potentially active weather later in the week.

SHORT TERM /TODAY THROUGH SATURDAY/ . Heavier precipitation associated with the front is working into the interior and coast as of 22Z. This will shift north and east through the afternoon and evening hours. The main impact will be a period of heavier snowfall with the front the mountains this afternoon and evening with significant accumulations above 3500 feet. Snow showers will continue behind the front through Friday morning tapering off through the afternoon hours. Total snow accumulations of 12 to 18 inches above 3500 feet through Friday morning with a few higher amounts in some locations. The winter storm warning remains in effect through 10 AM.

There continues to be enough instability for the potential for thunderstorms, mainly along the coast through the evening hours. Otherwise expect scattered showers and limited rainfall over the lowlands into Friday morning behind the front. Shower activity will decrease further Friday afternoon with highs in the mid to upper 40s. The upper level trough trailing the front will linger over the area Friday night into Saturday keeping showers over the area. Lows in the upper 30s and 40s. Highs in the mid and upper 40s.

LONG TERM /SUNDAY THROUGH WEDNESDAY/ . Medium range models continue to show an upper level ridge building over the eastern Pacific Sunday with some warm advection over Western Washington which may result in some light rain, mainly during the day. Guidance continues to show the upper level ridge shifting onshore Sunday night into Monday and lingering at least through the early part of next week. This is pretty solidly reinforced by the ensembles with uncertainty regarding the timing of the transition and the strength of the ridge as it shifts onshore. The uncertainty associated with the strength of the ridge is significant since it highlights the potential for a few, weak systems passing over the ridge to bring at least a chance of precipitation to Western Washington at times in the extended period. If this occurs it is more likely to be little more than these systems brushing the area as they pass to the north. Ensembles do show the large scale pattern shifting later in the week as the upper level ridge shifting eastward possibly setting the stage for a bit more active weather.

AVIATION. Westerly flow aloft continues with a broad upper trough over the northeast Pacific. The air mass is moist and somewhat unstable. A frontal boundary reached the coast around 21Z and will be east of the Cascades by late this evening. A mix of VFR and MVFR in scattered showers will continue into the overnight hours. Gusty S-SW surface winds through the Puget Sound area terminals will persist through the evening hours then gradually ease overnight. With lighter surface winds and low level moisture still in place, MVFR ceilings could be more prevalent across the region by daybreak Friday.

KSEA . MVFR possible in and around heavier showers this evening. MVFR ceilings could become more persistent by Friday morning as the air mass stabilizes and surface winds ease. Surface winds S-SW 10 to 15 knots gusting 20-25 knots this evening then easing to 10 knots or less by 09Z-12Z. 27

MARINE. Small craft advisory winds easing overnight over the coastal waters in the wake of today's frontal passage. Coastal seas will remain in the double digits into Friday and Saturday for a continuation of small craft advisory hazardous seas criteria as well as high surf at the coastal beaches. Gusty post-frontal southwesterlies will necessitate the small craft advisory for Puget Sound and Hood Canal to extend until around midnight.

A weak surface ridge will build over the coastal waters and persist into the weekend for a transition to quieter conditions across area waters. Low level offshore flow is expected to develop early next week as surface ridging builds east of the Cascades. 27

HYDROLOGY . There are no flooding concerns at this time. Relatively low snow levels and limited precipitation amounts will result in little or no impacts on area rivers.

SEW WATCHES/WARNINGS/ADVISORIES. WA . Winter Storm Warning until 10 AM PST Friday for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties-Cascades of Whatcom and Skagit Counties.

High Surf Advisory until 10 AM PST Friday for Central Coast- North Coast.

Winter Weather Advisory until 9 PM PST this evening for Olympics.

PZ . Small Craft Advisory until 10 AM PST Saturday 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-Grays Harbor Bar-West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until midnight PST tonight for Puget Sound and Hood Canal.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PBFW1 - Padilla Bay Reserve, WA 8 mi67 min S 8 48°F 1010 hPa46°F
46118 15 mi42 min 46°F 1009 hPa46°F
SISW1 - Smith Island, WA 18 mi27 min W 18 G 20 45°F 1011.1 hPa42°F
FRDW1 - 9449880 - Friday Harbor, WA 22 mi61 min 48°F1010.2 hPa
CHYW1 - 9449424 - Cherry Point, WA 26 mi55 min 1010.2 hPa
CPMW1 26 mi55 min NW 11 G 13 45°F
CPNW1 26 mi73 min WNW 13 G 16 45°F
PTWW1 - 9444900 - Port Townsend, WA 29 mi55 min SW 9.9 G 15 46°F 48°F1011.3 hPa
46088 - New Dungeness, WA (Hein Bank) 33 mi37 min WSW 9.7 G 12 45°F 47°F1011.9 hPa41°F
46125 42 mi35 min 48°F 1009.8 hPa44°F

Wind History for Friday Harbor, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burlington/Mount Vernon, Skagit Regional Airport, WA10 mi3 hrsSE 9 G 1610.00 miOvercast50°F44°F82%1010.2 hPa
Whidbey Island Naval Air Station - Ault Field, WA11 mi3.7 hrsSSE 16 G 2310.00 miOvercast52°F42°F69%1010.6 hPa
Bellingham, Bellingham International Airport, WA20 mi3.7 hrsSSE 11 G 2010.00 miOvercast51°F42°F71%1010.4 hPa
Eastsound, Orcas Island Airport, WA21 mi3 hrsSSE 8 G 1410.00 miOvercast50°F44°F82%1008.8 hPa
Friday Harbor Airport, WA22 mi3.7 hrsESE 610.00 miOvercast48°F45°F89%1009.8 hPa

Link to 5 minute data for KBVS

Wind History from BVS (wind in knots)
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1 day agoCalmCalmCalmCalmNW3CalmCalmCalmCalmNE3CalmCalmCalmNE5CalmNE4E4CalmCalmE4E4E6SE12SE14
G20
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmS3S4CalmS5SE4CalmE5NE4CalmNE3N3CalmNE3CalmE3

Tide / Current Tables for Anacortes, Guemes Channel, Washington
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Anacortes
Click for Map
Thu -- 06:10 AM PST     8.56 feet High Tide
Thu -- 07:53 AM PST     Sunrise
Thu -- 08:18 AM PST     Moonset
Thu -- 10:34 AM PST     6.81 feet Low Tide
Thu -- 03:09 PM PST     8.10 feet High Tide
Thu -- 04:15 PM PST     Sunset
Thu -- 04:56 PM PST     Moonrise
Thu -- 10:32 PM PST     -2.09 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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01.73.55.478.18.68.47.87.26.96.87.17.57.98.17.97.15.53.41-0.9-1.9-2

Tide / Current Tables for Guemes Channel, West entrance of, Washington Current
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Guemes Channel
Click for MapFlood direction 95 true
Ebb direction 255 true

Thu -- 02:13 AM PST     1.73 knots Max Flood
Thu -- 05:47 AM PST     -0.00 knots Slack
Thu -- 07:53 AM PST     Sunrise
Thu -- 08:18 AM PST     Moonset
Thu -- 09:04 AM PST     -1.25 knots Max Ebb
Thu -- 12:28 PM PST     0.00 knots Slack
Thu -- 01:39 PM PST     0.41 knots Max Flood
Thu -- 02:07 PM PST     -0.00 knots Slack
Thu -- 04:15 PM PST     Sunset
Thu -- 04:56 PM PST     Moonrise
Thu -- 08:20 PM PST     -3.37 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.21.31.71.61.20.6-0.1-0.6-1.1-1.2-1.1-0.7-0.30.30.2-0.6-1.2-1.9-2.6-3.1-3.3-3.3-2.6-1.6

Weather Map
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wmap_P
GEOS 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
Wind Forecast for Seattle, WA (18,4,5,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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