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Marine Weather and Tides
Version 3.4 |
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues. 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. |
| Sunrise 6:05AM | Sunset 8:10PM | Saturday April 21, 2018 4:07 PM PDT (23:07 UTC) | Moonrise 9:45AM | Moonset 12:35AM | Illumination 41% |  |
Marine Forecasts
EDIT (on/off) Help7 Day Forecast for Marine Location Near Hansville, WA
Hourly EDIT Helplocation: 47.9, -122.6 debug
Area Discussion for - Seattle, WA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 ksew 212130 afdsew area forecast discussion national weather service seattle wa 230 pm pdt Sat apr 21 2018 Synopsis the puget sound convergence zone will dissipate this evening, and showers over western washington should end. An upper ridge will build offshore Sunday for a sunny afternoon. The ridge will move inland Monday, bringing a stretch of sunny warm days that should continue through Thursday. An upper low moving into oregon on Friday should result in cooler weather and more clouds. Short term Westerly flow aloft continues over western washington this afternoon, ahead of a weak upper trough approaching from well offshore. Low level onshore flow continues as well, but it is gradually weakening. The puget sound convergence zone that formed early this morning more or less dissipated as it reached the snohomish king county line, then another one developed further north, and it is moving south into the north seattle area. Outside of the convergence zone there have been Sun breaks and spotty showers. Temperatures at 2 pm were in the 50s. Low level onshore flow will weaken further during the next few hours and switch to northerly by midnight, so the convergence zone should dissipate this evening. The shower activity elsewhere will end this evening as well. The offshore trough, currently near 135w, will move to the coast late tonight and cross the cascades around midday Sunday. The upper trough will bring some cloud cover but probably no precipitation. Then dry northwest flow aloft will prevail over the forecast area ahead of an upper ridge building over the offshore waters. It will be fairly cool tonight, with the overnight lows mainly around 40. Sunday will be mostly sunny in the afternoon with highs a couple degrees above normal, in the mid 50s to lower 60s. The ridge will continue to build as it moves into the pacific northwest on Monday. At the same time a thermally induced surface trough will extend northward along the pacific northwest coast for low level offshore flow. This will result in sunny and warmer weather, with highs Monday in the mid 60s to lower 70s. The upper ridge will strengthen on Tuesday, with 500 mb heights rising to around 5730 meters over western washington. Offshore flow will increase too, and highs Tuesday should be in the upper 60s and 70s under sunny skies. Mcdonnal Long term The upper ridge will remain over the region Wednesday and Thursday, with light offshore flow continuing, and the lower part of the atmosphere warming. On Thursday, the 850 mb |
temperatures should be around +14c; that should be the warmest day over the interior lowlands, with highs ranging from the upper 60s in the north to the lower 80s in the south. The pattern will probably break down Friday and Saturday, as an upper low begins moving northeast from the california offshore waters into oregon. That should at least induce a switch to onshore flow, resulting in cooler weather with highs in the upper 50s and 60s. It could produce some showers as well. Mcdonnal Aviation At 230pm showers are mainly in the pscz over king county. The pscz will move south and break up later this afternoon or evening. There are a few showers elsewhere and areas of clearing. A patch of high clouds is also moving through the area. Expect dry weather on Sunday as an upper level ridge builds and the air becomes dry and stable. Ksea... The pscz is weak but over king county at 230pm. There will be a period of variable winds and showers and then a north breeze and probably clearing. After some high clouds, skies will clear tonight as high pressure builds in. There could be morning low clouds, but the uw wrfgfs didn't have them in the metro area, so I left them out of the sea-tac taf. Marine Onshore flow behind the front continues to ease this afternoon and evening as high pressure builds into the area. Thermally induced low pressure will develop along the coast early next week with offshore flow and warm sunny weather. Sew watches warnings advisories Wa... None. Pz... Small craft advisory 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 3 am pdt Sunday for grays harbor bar. Small craft advisory until 9 pm pdt this evening for central u.S. Waters strait of juan de fuca-east 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 |
| 46120 | 14 mi | 56 min | NNW 9.7 | 51°F | 1029.8 hPa | 40°F | ||
| PTWW1 - 9444900 - Port Townsend, WA | 17 mi | 56 min | SW 8 G 14 | 50°F | 49°F | 1030.9 hPa | ||
| WPOW1 - West Point, WA | 19 mi | 68 min | SSE 2.9 G 4.1 | 52°F | 1030.1 hPa (+0.9) | 40°F | ||
| EBSW1 - 9447130 - Seattle, WA | 25 mi | 50 min | ESE 6 G 8.9 | 51°F | 49°F | 1030.2 hPa | ||
| SISW1 - Smith Island, WA | 32 mi | 78 min | W 17 G 20 | 49°F | 1029.7 hPa (+0.6) | 38°F | ||
| PBFW1 - Padilla Bay Reserve, WA | 40 mi | 98 min | WNW 8.9 | 55°F | 1029 hPa | 40°F | ||
| 46088 - New Dungeness, WA (Hein Bank) | 42 mi | 48 min | W 16 G 18 | 49°F | 48°F | 3 ft | 1029.6 hPa | 40°F |
| 46121 | 43 mi | 61 min | 55°F | 1029.7 hPa | 36°F | |||
| TCMW1 - 9446482 - Tacoma Met, WA | 44 mi | 56 min | SW 12 G 17 | |||||
| TCNW1 - 9446484 - Tacoma, WA | 45 mi | 56 min | 56°F | 49°F | 1029.6 hPa | |||
| PTAW1 - 9444090 - Port Angeles, WA | 47 mi | 92 min | 13 G 15 | 49°F | 48°F | 1030.1 hPa |
Wind History for Port Townsend, WA
(wind in knots) EDIT (on/off) Help| 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 | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | |
| Last 24hr | SW G12 | SW G10 | W | NW | -- | S | N G6 | S G16 | S | SE | SE G14 | SE | NW | NW G9 | SW | SW | SW G13 | SW | SE | E G10 | E | W G14 | SW G15 | SW G15 |
| 1 day ago | W | NW | W G10 | W G10 | SW G14 | SW G13 | SW G12 | W G11 | W G11 | W G11 | SW | S | SE | SE | SE | SE | SE | S | E | E | E | E | E | W G12 |
| 2 days ago | SW G10 | SW G13 | SW | SW | W | W | W | W G7 | W | W | W | W | S | W G7 | SW | SW | W | W G10 | W G6 | N | W G8 | W G9 | NW G8 | W G10 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Everett Snohomish County, WA | 17 mi | 75 min | NNW 6 | 10.00 mi | Overcast | 52°F | 37°F | 59% | 1030.1 hPa |
Wind History from PAE (wind in knots)
| 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 | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | |
| Last 24hr | S | S | S | S | SE | S | S G25 | SE G22 | S | S G24 | SE | SE G28 | S | S | S | SE | E | E | E | SW | NW | NW | NW | |
| 1 day ago | NW | NW | NW | NW | NW | NW | N | N | N | N | N | Calm | Calm | Calm | E | SE | SE | SE | SE | SW | S | S | SE | S G19 |
| 2 days ago | NW G15 | NW | NE | Calm | NW | W | Calm | NW | Calm | NW | Calm | W | NW | Calm | NW | Calm | W | NW | N | W | W | NW | NW |
Tide / Current Tables for Foulweather Bluff, Washington
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Foulweather Bluff Click for Map Sat -- 01:35 AM PDT Moonset Sat -- 03:35 AM PDT 6.30 feet Low Tide Sat -- 06:09 AM PDT Sunrise Sat -- 08:30 AM PDT 8.94 feet High Tide Sat -- 10:44 AM PDT Moonrise Sat -- 03:47 PM PDT -0.95 feet Low Tide Sat -- 08:09 PM PDT Sunset Sat -- 11:13 PM PDT 10.03 feet High Tide 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 |
| 9.1 | 8.1 | 7.1 | 6.4 | 6.4 | 6.8 | 7.6 | 8.4 | 8.9 | 8.8 | 8.1 | 6.6 | 4.7 | 2.6 | 0.7 | -0.6 | -0.9 | -0.1 | 1.5 | 3.7 | 6 | 8.1 | 9.4 | 10 |
Tide / Current Tables for Edmonds, 2.7 wsW of, Washington Current
EDIT (on/off) Help One Week of Data| Edmonds Click for Map Sat -- 01:35 AM PDT Moonset Sat -- 01:51 AM PDT -0.40 knots Max Ebb Sat -- 05:57 AM PDT 0.00 knots Slack Sat -- 06:09 AM PDT Sunrise Sat -- 07:03 AM PDT 0.06 knots Max Flood Sat -- 08:50 AM PDT -0.00 knots Slack Sat -- 10:44 AM PDT Moonrise Sat -- 01:25 PM PDT -0.62 knots Max Ebb Sat -- 05:36 PM PDT 0.00 knots Slack Sat -- 08:09 PM PDT Sunset Sat -- 08:11 PM PDT 0.24 knots Max Flood Sat -- 11:44 PM PDT -0.00 knots Slack 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 |
| -0.3 | -0.4 | -0.4 | -0.4 | -0.3 | -0.1 | 0 | 0.1 | 0 | -0 | -0.2 | -0.4 | -0.5 | -0.6 | -0.6 | -0.5 | -0.3 | -0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Seattle, WA (19,4,5,8)
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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. |