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Marine Weather and Tides
Version 3.4 |
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 7:38AM | Sunset 6:05PM | Monday October 23, 2017 4:27 AM PDT (11:27 UTC) | Moonrise 10:21AM | Moonset 7:47PM | Illumination 11% |  |
Marine Forecasts
EDIT (on/off) Help| PZZ135 Puget Sound And Hood Canal- 300 Am Pdt Mon Oct 23 2017 Today..SE wind to 10 kt in the morning becoming light. Wind waves 1 ft or less. Patchy fog in the morning. Tonight..N wind to 10 kt. Wind waves 1 ft or less. Patchy fog after midnight. Tue..N wind to 10 kt. Wind waves 1 ft or less. Patchy fog in the morning. Tue night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less. Wed..Light wind becoming S 5 to 15 kt in the afternoon. Wind waves 2 ft or less. Wed night..SE wind to 10 kt becoming N after midnight. Wind waves 1 ft or less. Thu..N wind 5 to 15 kt. Wind waves 2 ft or less. Fri..N wind to 10 kt. Wind waves 1 ft or less. | PZZ100 300 Am Pdt Mon Oct 23 2017 Synopsis for the northern and central washington coastal and inland waters..A surface ridge forming over western wa will produce weak offshore flow today through Tuesday. A weak cold front will move southeast across the area on Wednesday. Northerly offshore flow will prevail Thursday and Friday as a ridge builds over southern british columbia. |
7 Day Forecast for Marine Location Near Issaquah, WA
Hourly EDIT Helplocation: 47.54, -122.02 debug
Area Discussion for - Seattle, WA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 ksew 231050 cca afdsew area forecast discussion national weather service seattle wa 330 am pdt Sun oct 23 2017 Synopsis High pressure building over the region will provide dry weather through Tuesday. Residual moisture will produce some morning fog or low clouds the next couple days. A weak front will move through the area Wednesday with some spotty light rain. Dry weather returns Thursday and should prevail through the weekend. Short term High pressure will build north over the region through Tuesday providing dry and mild weather. Stable conditions and residual low level moisture will result in some late night and morning fog across the lowlands. Satellite imagery and obs indicate some low clouds around the area this morning. This will mix out by late morning with afternoon sunshine the next couple days. High temperatures should run slightly above average, mainly in the lower 60s. A decaying front will push southeast across the area on Wednesday. Recent model runs have trended toward a weaker system with marginal moisture and lift. Rain should be spotty and quite light, probably less than a tenth for most locations. Kept pops limited to chance category. Long term The GFS ecwmf are in agreement in building a strong ridge of high pressure over the region Thursday through the weekend. This will provide a longer stretch of dry weather and mostly clear skies. There may be some patchy morning fog in prone spots, otherwise sunny skies and near average temperatures are expected. Mercer Hydrology All area rivers are now below flood stage, and levels will continue falling today. The last of the flood warnings for the snohomish, snoqualmie, and cowlitz rivers will be ended early this morning. Dry weather is expected through next weekend, except for a little light rain on Wednesday. Amounts will be too light to have any affect on rivers. New flooding is not expected the next 7 days. Aviation An upper level ridge building over the pacnw will produce moderate westerly flow aloft through tonight. The air mass |
has been gradually drying especially at mid and upper levels, but the lower air mass is still moist enough from the recent rains that patchy ifr fog or low stratus will continue through around 18z Monday. Otherwise conditions will beVFR. Ksea... A bkn017 layer has formed at ksea at 08z which supports a bkn- ovc low stratus layer 12z-17z. Other stations around the local area also have low level moisture producing some low stratus. Surface winds will be SE 3-5kt this morning becoming N this afternoon. Kam Marine A surface ridge building over W wa will produce weak offshore flow today through Tuesday. Westerly swell 10 to 14 feet this morning, generated by recent storms, will gradually subside through this evening, falling below 10 feet after midnight. A SCA for hazardous seas will continue through this evening. A weak cold front will move southeast across the area on Wednesday, with small craft advisory winds over the coastal waters and in the strait of juan de fuca. Northerly offshore flow will follow the front Thursday and Friday as a ridge builds over southern british columbia. Kam Sew watches warnings advisories Wa... None. Pz... Small craft advisory for hazardous seas until 11 pm pdt 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 11 pm pdt this evening for grays harbor bar. Small craft advisory for hazardous seas until 5 pm pdt this afternoon for west entrance u.S. Waters strait of juan de fuca. |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| EBSW1 - 9447130 - Seattle, WA | 17 mi | 40 min | S 1.9 G 4.1 | 53°F | 54°F | 1035 hPa | ||
| WPOW1 - West Point, WA | 24 mi | 28 min | SSE 7 G 8 | 53°F | 1034.8 hPa (+1.9) | 49°F | ||
| 46120 | 25 mi | 36 min | WSW 7.8 | 54°F | 1034.1 hPa | 54°F | ||
| TCMW1 - 9446482 - Tacoma Met, WA | 28 mi | 40 min | S 1.9 G 2.9 | |||||
| TCNW1 - 9446484 - Tacoma, WA | 28 mi | 46 min | 48°F | 53°F | 1035.3 hPa |
Wind History for Seattle, Puget Sound, WA, WA
(wind in knots) EDIT (on/off) Help| 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | -12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | -12 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | |
| Last 24hr | SW G15 | SW G13 | S G10 | S G13 | S G13 | SW G22 | S G19 | SW G17 | SW G14 | SW G12 | S G11 | S G11 | S G9 | S G11 | S G14 | SE | E | SE | SE | S | SE | SE | ||
| 1 day ago | E G10 | S | SE G10 | SE | SE G7 | SE | E | S | E G8 | SE G9 | SE G8 | SE G10 | SE G11 | SE G8 | SE G13 | S G18 | S G17 | S G14 | S G20 | S G15 | S G16 | SW G19 | SW G16 | SW G24 |
| 2 days ago | S G13 | S G13 | S G16 | S G14 | SW G17 | S G16 | S | S G11 | S G11 | S G11 | SE G7 | S G11 | SE G9 | SE | SE G8 | SE G7 | SE |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Renton Municipal Airport, WA | 11 mi | 35 min | SE 3 | 10.00 mi | Mostly Cloudy | 49°F | 46°F | 93% | 1035.3 hPa |
| Boeing Field - King County International Airport, WA | 15 mi | 35 min | SE 4 | 10.00 mi | Mostly Cloudy | 50°F | 46°F | 89% | 1034.7 hPa |
| Seattle, Seattle-Tacoma International Airport, WA | 17 mi | 35 min | SE 5 | 10.00 mi | Overcast | 50°F | 46°F | 86% | 1035.4 hPa |
Wind History from RNT (wind in knots)
| 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | |
| Last 24hr | S G18 | S G18 | S | S | S | S | S G18 | S G19 | S | S G20 | SE | S | S | S | S | S | SE | Calm | Calm | SE | S | SE | SE | SE |
| 1 day ago | E | SE | S | SE | E | E | E | E | SE | S G15 | SE G18 | SE | S | S G16 | S G17 | S | S | S G17 | S G17 | |||||
| 2 days ago | S | SE | SE | SE | S G18 | SE | SE | SE | SE | SE | S G21 | S G18 | S | SE | SE | SE | SE | E | Calm | Calm | SE | Calm | Calm |
Tide / Current Tables for Duwamish Waterway, Washington
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Duwamish Waterway Click for Map Mon -- 01:40 AM PDT 0.02 feet Low Tide Mon -- 07:40 AM PDT Sunrise Mon -- 08:33 AM PDT 10.70 feet High Tide Mon -- 11:21 AM PDT Moonrise Mon -- 02:15 PM PDT 5.41 feet Low Tide Mon -- 06:06 PM PDT Sunset Mon -- 07:13 PM PDT 9.43 feet High Tide Mon -- 08:48 PM PDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 1.6 | 0.3 | 0.1 | 1.1 | 3 | 5.4 | 7.8 | 9.6 | 10.6 | 10.6 | 10 | 8.8 | 7.3 | 6 | 5.4 | 5.6 | 6.6 | 7.7 | 8.8 | 9.4 | 9.2 | 8.2 | 6.7 | 4.8 |
Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
EDIT (on/off) Help One Week of Data| Restoration Point Click for Map Mon -- 02:31 AM PDT 0.00 knots Slack Mon -- 04:54 AM PDT 0.66 knots Max Flood Mon -- 07:40 AM PDT Sunrise Mon -- 08:44 AM PDT -0.00 knots Slack Mon -- 11:22 AM PDT Moonrise Mon -- 11:45 AM PDT -0.59 knots Max Ebb Mon -- 03:29 PM PDT 0.00 knots Slack Mon -- 04:41 PM PDT 0.20 knots Max Flood Mon -- 06:06 PM PDT Sunset Mon -- 07:06 PM PDT -0.00 knots Slack Mon -- 08:49 PM PDT Moonset Mon -- 11:18 PM PDT -0.86 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| -0.8 | -0.5 | -0.2 | 0.2 | 0.6 | 0.7 | 0.6 | 0.4 | 0.2 | -0.1 | -0.4 | -0.5 | -0.6 | -0.5 | -0.3 | -0.1 | 0.1 | 0.2 | 0.1 | 0 | -0.2 | -0.5 | -0.7 | -0.8 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of PacificNorthwest EDIT  |
Wind Forecast for Seattle, WA (7,2,3,4)
(on/off) Help |  |  |
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. |