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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 6:07AM | Sunset 9:47PM | Monday April 23, 2018 6:59 PM AKDT (02:59 UTC) | Moonrise 11:29AM | Moonset 2:59AM | Illumination 63% |  |
Marine Forecasts
EDIT (on/off) Help| PKZ137 Marmot Bay- 352 Pm Akdt Mon Apr 23 2018 .small craft advisory through Tuesday... Tonight..SE wind 20 kt increasing to 30 kt after midnight. Seas 4 ft building to 11 ft after midnight. Rain. Tue..SE wind 30 kt becoming sw 20 kt in the afternoon. Seas 12 ft subsiding to 4 ft in the afternoon. Rain. Tue night..S wind 20 kt. Seas 4 ft. Wed and Wed night..S wind 20 kt. Seas 4 ft. Thu..S wind 15 kt. Seas 3 ft. Fri..S wind 10 kt. Seas 2 ft. Sat..Variable wind less than 10 kt. Seas 2 ft. |
7 Day Forecast for Marine Location Near Ouzinkie, AK
Hourly EDIT Helplocation: 57.97, -152.58 debug
Area Discussion for -
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxak68 pafc 240033 afdafc southcentral and southwest alaska forecast discussion national weather service anchorage ak 433 pm akdt Mon apr 23 2018 Analysis and upper levels While a couple upper level lows fujiwara around each other in the bering sea, a short-wave trough is digging across the north pacific, with arctic air advecting in behind it. This is leading to downstream amplification, with what had been a zonal jet streak (west to east) rapidly on its way to becoming meridional (south to north). The blended total precipitable water product shows much moister air beginning to surge northward toward the alaska peninsula. The amplified pattern will lead to widespread impacts from wind to heavy precipitation across the southern mainland of alaska over the next couple days. Currently over the southern mainland a series of upper level waves along with a dying occluded front moving onshore of prince william sound is producing widespread cloud cover with areas of rain (and some higher elevation snow). Model discussion Models remain in very good agreement with large scale features, with excellent run-to-run consistency with many of the details of the storm system about to affect the southern mainland. The primary forecast challenge is determining strength of winds on Tuesday in anchorage and vicinity. The namnest is notably stronger with winds than any other model and is largely being disregarded. Forecast soundings and model cross-sections show the namnest initiates strong mountain wave activity and ducts very strong winds down to the surface. The atmosphere generally supports unstable lapse rates in which the highest winds would escape upward, but some stronger winds would mix down to the surface. We just don't think it will be nearly as strong as namnest indicates due to the lack of a critical trapping level in this unstable environment. The latest forecast seems like a nice middle ground (and reasonable solution) among the guidance. One other notable forecast challenge is precipitation-type over the susitna valley Tuesday through Tuesday night. It's always a challenge this time of year because of the affect of solar radiation on warming surface temperatures. Models are actually pretty close with the thermal profile above the boundary layer, but are all over the place in the boundary layer. Based on the strength of upslope flow and resultant heavy precipitation will go heavily toward colder guidance, particularly for the higher elevations of the northern susitna valley (north of talkeetna). Aviation Panc... Southeasterly winds will be the big forecast challenge over the next 30 hours. Turnagain arm winds will continue to bend into the airport through early this evening. After that the core of the turnagain arm jet will shift back southward a bit, so winds may briefly trend down during the late evening. However, overall tightening pressure gradients combined with low level instability suggest winds will continue to steadily strengthen overnight tonight through Tuesday morning ahead of frontal system moving in from the west. More uncertainty exists during the day Tuesday with potential for mountain wave activity in the anchorage area. It does look like the winds will peak Tuesday afternoon just prior to the cold front moving through with gusts to around 40 kt with llws. Unstable air and deep southerly flow behind the cold front will maintain gusty south winds, though they will be weaker than the peak winds observed Tuesday afternoon. Short term forecast southcentral alaska (days 1 and 2) An active week is in store for southcentral alaska with a number of unusually strong systems for this time of year rumbling through. The first one is bringing rain to the north gulf coast today with just scattered showers inland. The exception could be the copper river basin where satellite shows a bit more lifting in the eastern half of the basin. Winds will increase again through the typical gaps this evening and then crank up a few notches tonight through Tuesday. A strong front will push into the western gulf of alaska and up cook inlet tonight which is |
associated with a large low in the eastern bering sea. A significant warm push aloft will be ahead of this front with some colder air moving in behind it Tuesday night. This front will bring strong southeast winds into the anchorage area and matanuska valley and strong south winds along the copper river. Winds will make it into the anchorage bowl as they bend northwestward out of turnagain arm. It has been a while since winds this strong have made it into town, and especially at this time of year. The strong winds will mostly keep the area dry with the best shot of rain for anchorage and the matanuska valley late Tuesday afternoon through mid evening as an upper level wave moves through. There is also some questions as for snow amounts Tuesday afternoon into Tuesday night for areas north of talkeetna. Talkeetna will be on the borderline for snow, but areas north of there should be able to get mostly snow by Tuesday night with perhaps a number of inches of accumulation. Short term forecast southwest alaska (days 1 and 2) An upper level low over the bering sea will continue to fuel an active weather pattern over southwest alaska. A series of shortwaves will get kicked out of the low and push into southwest alaska ushering moisture into the region. The vertical temperature profiles are sufficiently complex, some areas will see rain, some snow and others will see a mix. Additionally, the jet core will nose its way into southwest tonight and tomorrow which will result in strong winds at the surface and in the boundary layer. Winds will be strongest through channeled terrain including through the kamishak gap and out across lake iliamna. As the storm careens into southwest, long gale force fetch will materialize over kuskokwim and bristol bays. High surf with water levels at or slightly above highest astronomical tide levels is likely around the time of high tide Tuesday afternoon and early Wednesday morning. Short term forecast bering sea aleutians (days 1 and 2) There is a large upper level low centered over the entire bering sea. There are multiple shortwaves embedded in this low. The latest ascat advanced scatterometer pass has detected gale force winds near amchitka, north of shemya and also west of st. Matthew islands. Broad cyclonic flow will dominate the region the ensuing 36 hr period resulting in more blustery and wet weather. As the surface low slowly pushes eastward, a dome of high pressure south of adak will bring weak ridging into the western aleutians later Wednesday. However, the latest himawari satellite image has another low in eastern russia which will keep that ridge from amplifying too much. Long term forecast (days 3 through 7) The long range forecast beginning Tuesday night will be in an active pattern as a broad bering low spins multiple shortwaves around its perimeter which spans across the state and surrounding waters. Onshore flow supplies abundant moisture for showers to develop with the embedded shortwaves as they move around the low center which brings higher precipitation chances for the southern mainland through mid week. Late Thursday, the bering low is kicked eastward as the next low races up from the north pacific to the western bering. Models are in good agreement on the timing of this storm reaching the central aleutians early Friday morning; however, they diverge on the timing and track of the system thereafter. The main challenge for models is resolving a ridge that builds into the southern gulf ahead of the next approaching low. The ECMWF had the best run to run consistency and also had good continuity between its operation and ensemble solutions for the extended range forecasts. Overall, only minor updates were made for second half of the forecast as there is low confidence concerning the track the track of the bering low. Afc watches warnings advisories Public... High wind warning 101. Marine... Gale 119 120 130-132 139 150 155 160 165 170-178 180. Synopsis and model discussion... Seb southcentral alaska... Tp southwest alaska bering sea aleutians... Ps long term... Kh |
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 |
| KDAA2 - 9457292- Kodiak Island, AK | 17 mi | 48 min | SSW 17 G 20 | 46°F | 42°F | 1003.7 hPa | ||
| 46077 - Shelikof Strait, AK | 85 mi | 70 min | SW 1.9 G 3.9 | 40°F | 41°F | 3 ft | 1003.5 hPa (+0.0) | 33°F |
Wind History for Kodiak Island, AK
(wind in knots) EDIT (on/off) Help| 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 | 5 PM | 6 PM | |
| Last 24hr | NE G13 | NE G11 | NE G11 | NE G10 | NE G11 | NE G13 | NE G12 | NE | NE G8 | NE | NE | NE | NE | NE | NE | E | NE | NE | NE | E | NE | NE G4 | SW | SW |
| 1 day ago | NE G15 | E G17 | NE G18 | NE G17 | NE G19 | NE G19 | NE G21 | NE G23 | NE G23 | NE G23 | NE G20 | NE G19 | NE G19 | NE G19 | NE G13 | NE G13 | NE G11 | NE G10 | NE G14 | NE G17 | NE G12 | NE G15 | NE G17 | NE G13 |
| 2 days ago | SW G12 | SW | S | SW | SW G7 | SW | S | S | W | SE | SE | S | SW | SE | -- | SW | NW | NE | NE G8 | E G12 | E G11 | NE G14 | E G15 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Kodiak, Kodiak Airport, AK | 15 mi | 67 min | SSW 13 | 10.00 mi | A Few Clouds | 49°F | 33°F | 55% | 1003.5 hPa |
Wind History from ADQ (wind in knots)
| 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 | 5 PM | 6 PM | 7 PM | |
| Last 24hr | E | E | E | E | E | NE | NE | NE | NE | NE | NE | NE | NE | E | E | E | E | E | E | NE | NE | S | SW | S |
| 1 day ago | E | E G32 | E | E G33 | E G33 | E G34 | E G36 | E G39 | NE G34 | NE G31 | NE G27 | NE | NE | NE | E | E | E | E | E | E | E | NE | NE | E |
| 2 days ago | S | S | S | S | Calm | Calm | S | S | Calm | Calm | Calm | SW | Calm | Calm | E | SE | E | E | E | E | E | E | E | E |
Tide / Current Tables for Kizhuyak Point, Alaska
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Kizhuyak Point Click for Map Mon -- 02:20 AM AKDT 3.22 feet Low Tide Mon -- 04:58 AM AKDT Moonset Mon -- 06:38 AM AKDT Sunrise Mon -- 08:26 AM AKDT 8.24 feet High Tide Mon -- 01:29 PM AKDT Moonrise Mon -- 03:34 PM AKDT 0.34 feet Low Tide Mon -- 09:40 PM AKDT Sunset Mon -- 10:27 PM AKDT 6.98 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 |
| 4.8 | 3.8 | 3.3 | 3.4 | 4 | 5.1 | 6.3 | 7.5 | 8.2 | 8.1 | 7.4 | 6.2 | 4.5 | 2.7 | 1.3 | 0.5 | 0.4 | 1 | 2.2 | 3.7 | 5.2 | 6.4 | 6.9 | 6.9 |
Tide / Current Tables for Ouzinkie, Spruce Island, Alaska
EDIT (on/off) Help One Week of Data| Ouzinkie Click for Map Mon -- 02:07 AM AKDT 3.12 feet Low Tide Mon -- 04:58 AM AKDT Moonset Mon -- 06:37 AM AKDT Sunrise Mon -- 08:16 AM AKDT 7.84 feet High Tide Mon -- 01:29 PM AKDT Moonrise Mon -- 03:21 PM AKDT 0.24 feet Low Tide Mon -- 09:40 PM AKDT Sunset Mon -- 10:17 PM AKDT 6.58 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 |
| 4.4 | 3.5 | 3.1 | 3.3 | 4 | 5.1 | 6.2 | 7.3 | 7.8 | 7.7 | 6.9 | 5.6 | 3.9 | 2.2 | 0.9 | 0.3 | 0.4 | 1.1 | 2.3 | 3.7 | 5.1 | 6.1 | 6.6 | 6.4 |
Weather Map and Satellite Images
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GOES Local Image of Alaska 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
Ground Weather Radar Station Kenai, AK
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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. |