Friday, January22, 2021
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Marine Weather and Tides
Normandy Park, WA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:44AMSunset 4:57PM Friday January 22, 2021 4:20 PM PST (00:20 UTC) Moonrise 12:14PMMoonset 2:19AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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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PZZ135 Puget Sound And Hood Canal- 242 Pm Pst Fri Jan 22 2021
Tonight..N wind 10 to 20 kt becoming 5 to 15 kt after midnight. Wind waves 1 to 3 ft. Patchy fog and freezing fog after midnight.
Sat..SW wind to 10 kt becoming S in the afternoon. Wind waves 1 ft or less. Patchy fog and freezing fog in the morning.
Sat night..S wind 5 to 15 kt becoming 10 to 20 kt after midnight. Wind waves 1 to 3 ft. A chance of rain after midnight.
Sun..S wind 10 to 20 kt becoming 5 to 15 kt in the afternoon. Wind waves 1 to 3 ft.
Sun night..S wind 15 to 25 kt easing to 5 to 15 kt after midnight. Wind waves 2 to 4 ft.
Mon..Light wind. Wind waves less than 1 ft.
Mon night..Light wind. Wind waves less than 1 ft.
Tue..SE wind to 10 kt becoming variable. Wind waves 1 ft or less.
Wed..Light wind. Wind waves less than 1 ft.
PZZ100 242 Pm Pst Fri Jan 22 2021
Synopsis for the northern and central washington coastal and inland waters..Northerly flow will gradually ease today and tonight then turn southerly Saturday ahead of an approaching frontal system. A frontal system will move through the area Saturday night and Sunday with low pressure dissipating over the area on Monday. A second front will approach the area on Tuesday.


7 Day Forecast for Marine Location Near Normandy Park, WA
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location: 47.4, -122.35     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 222242 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 242 PM PST Fri Jan 22 2021

SYNOPSIS. Dry and cold conditions expected tonight into Saturday. Wet weather will return to the region Sunday through at least mid next week, with lower snow levels in place. Chances for some lowland snow increase by the middle of next week.

SHORT TERM /TONIGHT THROUGH MONDAY/. Skies clearing nicely across the region this afternoon as dry northerly flow scours out any remaining moisture. A chilly night lies ahead with mostly clear skies apart from some possible freezing fog over parts of the Southwest Interior. Clouds will gradually increase throughout the day on Saturday ahead of an upper trough sliding southward down the British Columbia. Precipitation will spread inland early Sunday morning. For most areas below 1000 feet, it will be in the form of rain. It could, however, briefly begin as snow over portions of Whatcom County where lower dew points and a slow trickle of Fraser outflow could bring the snow level down closer to sea level.

The trough moves onshore Sunday afternoon and evening with snow levels remaining quite low. From Snohomish County southward, there should be enough low level southerly flow to preclude lowland snow accumulation. Whatcom and perhaps Skagit counties could be the exception with perhaps a slushy inch or two of accumulation possible above 500 feet. The upper trough remains centered over the region on Monday with light snow showers remaining possible over the North Interior through the morning hours. Otherwise, Monday will be mostly cloudy with scattered showers and temperatures remaining a bit below normal.

LONG TERM /TUESDAY THROUGH FRIDAY/. Apart from some shower activity over the Olympic Peninsula, much of Tuesday is trending mostly dry. The next in a series of troughs will approach the region by late Tuesday. At this point in time, models are generally favorable with low level thicknesses and temperatures aloft cool enough for possible snow down to near sea level Tuesday night and early Wednesday. As is often the case, the challenge will be with the trajectory of the associated surface low and the amount of moisture available. At least 2/3 of the ensemble members of the GFS/ECMWF produce a fraction of an inch for the Seattle area with 1-3 inches for portions of Snohomish County northward. So, confidence is increasing that there will be a possibility of accumulating lowland snow by midweek. It remains much too early for any significant amount of confidence in amounts.

Nonetheless, the below average temperatures and unsettled conditions will be with us throughout the week ahead. Monitor the forecasts closely as wintry conditions could impact travel next week. 27

AVIATION. Clear skies will continue through tonight and into Saturday morning. By the afternoon clouds are expected to start moving into the Western Washington area ahead of a front. Aside from coastal locations such as KHQM, VFR conditions will remain in place until the evening hours. Now all of that was in regards to clouds aloft, not for the potential for fog. We are anticipating some patchy areas of fog to from, particularly for south of the Puget Sound and in including terminals such as KPWT and KOLM here we will likely see IFR conditions, with some intermittent LIFR. As a result of temperatures being at or below freezing this fog will likely create for some icy surfaces. Any fog that formed should mix out by early afternoon.

Wind wise, the northerly winds are expected to ease overnight and remain mostly light throughout the day on Saturday. The change over to more southerly winds ahead of the front will gradually happen through the afternoon and by Saturday night all terminals will be in that dominate southerly flow. Late Saturday night the winds will begin to pick up to 7-10 knots, with the potential for some gusts closer to 15 knots at KHQM, KBLI and KPAE.

KSEA . Clear skies will continue through the rest of today and into Saturday. The potential for some patchy fog near by the terminal is there, but with northerly winds, fog should stay out of the KSEA. Clouds will begin to move into the area Saturday afternoon, but things should stay in VFR until Saturday night. North winds will be weakening through the night, and will gradually shift southerly tomorrow afternoon.

Butwin

MARINE. Generally things are fairly tranquil over the area waters this afternoon. We expect the northerly flow to be easing through the rest of today. Saturday afternoon winds will begin to shift to more southerly ahead of an approaching front.

Winds from this approaching front will begin to pick up to small craft advisory level late Saturday night/early Sunday morning. As per usual in these parts winds will pick up over the coastal waters first and a few hours later the inland waters. Once the front passes through we are expecting a set of northwest gales to occur over the coastal waters as well as the West Entrance to the Strait of Juan de Fuca. Winds will begin to ease Sunday night into Monday.

Swells are expected to remain under 10 feet ahead of the front but once it passes through expect swells to increase. In the near coastal waters expect swells to be close to 15 feet through Monday morning. The outer coastal waters are expected to have swells 15-20 feet through this same time frame.

Butwin

HYDROLOGY. No river flooding expected over the next 7 days as total QPF is expected to remain light with low snow levels.

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . None.

www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 9 mi51 min N 20 G 23
TCNW1 - 9446484 - Tacoma, WA 10 mi51 min 45°F 48°F1018.5 hPa
WPOW1 - West Point, WA 19 mi81 min N 22 G 23 42°F 1018.3 hPa (-0.0)30°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seattle, Seattle-Tacoma International Airport, WA3 mi28 minN 1210.00 miA Few Clouds44°F29°F55%1018.6 hPa
Boeing Field - King County International Airport, WA9 mi28 minNNW 810.00 miFair44°F28°F53%1018.4 hPa
Renton Municipal Airport, WA10 mi28 minNNW 1110.00 miFair45°F28°F52%1018.5 hPa
Tacoma, Tacoma Narrows Airport, WA15 mi28 minNNE 1110.00 miA Few Clouds42°F27°F55%1018.1 hPa
Pierce County-Thun Field, WA21 mi46 minNW 510.00 miFair45°F30°F57%1017.3 hPa
Bremerton, Bremerton National Airport, WA23 mi25 minNNE 8 G 1710.00 miFair42°F27°F55%1018.7 hPa

Link to 5 minute data for KSEA

Wind History from SEA (wind in knots)
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Last 24hrN9N9N10N13N11NE10NE8N9N12N11N12N9NE8N10N12N14NE13N14N15N10N12N15N12
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1 day agoW3CalmCalmCalmCalmCalmN4CalmNE3CalmCalmN3CalmCalmCalmCalmSE3E4N4N4N5N8N9N9
2 days agoCalmSE4SE4CalmSE6SE6CalmCalmSE5E4S4CalmCalmSE4N3NE3CalmCalmCalmN3CalmW5CalmCalm

Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Fri -- 01:19 AM PST     8.75 feet High Tide
Fri -- 02:19 AM PST     Moonset
Fri -- 05:32 AM PST     7.01 feet Low Tide
Fri -- 07:45 AM PST     Sunrise
Fri -- 11:21 AM PST     10.82 feet High Tide
Fri -- 12:13 PM PST     Moonrise
Fri -- 04:56 PM PST     Sunset
Fri -- 07:01 PM PST     1.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.48.78.78.27.57.17.17.58.39.310.210.810.79.98.7753.32.11.623.14.76.4

Tide / Current Tables for Skagit Bay, 1 mile S of Goat Island, Washington Current
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Skagit Bay
Click for Map
Fri -- 12:04 AM PST     -1.02 knots Max Ebb
Fri -- 02:20 AM PST     Moonset
Fri -- 03:03 AM PST     0.02 knots Slack
Fri -- 05:39 AM PST     1.24 knots Max Flood
Fri -- 07:46 AM PST     Sunrise
Fri -- 09:03 AM PST     -0.00 knots Slack
Fri -- 12:14 PM PST     Moonrise
Fri -- 12:23 PM PST     -1.26 knots Max Ebb
Fri -- 03:54 PM PST     0.00 knots Slack
Fri -- 04:57 PM PST     Sunset
Fri -- 06:31 PM PST     1.45 knots Max Flood
Fri -- 10:52 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1-0.9-0.7-0.20.81.21.21.10.70.1-0.8-1.1-1.2-1.2-1-0.80.211.41.41.31.10.7-0.3

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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Ground Weather Radar Station




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