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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 3:51AM | Sunset 10:10PM | Tuesday June 27, 2017 9:32 AM AKDT (17:32 UTC) | Moonrise 9:07AM | Moonset 12:00AM | Illumination 14% |  |
Marine Forecasts
EDIT (on/off) Help| PKZ033 Southern Chatham Strait- 321 Am Akdt Tue Jun 27 2017 Today..NW wind 15 kt becoming sw in the afternoon. Seas 3 ft. Tonight..S wind 15 kt. Seas 3 ft. Wed..S wind 10 kt. Seas 2 ft or less, except 5 ft near ocean entrances. Wed night..S wind 10 kt. Seas 2 ft or less, except 5 ft near ocean entrances. Thu..S wind 10 kt. Seas 2 ft or less. Fri..S wind 10 kt. Seas 2 ft or less. Sat..S wind 10 kt. Seas 2 ft or less. |
7 Day Forecast for Marine Location Near Port Alexander, AK
Hourly EDIT Helplocation: 56.17, -134.67 debug
Area Discussion for -
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxak67 pajk 271201 afdajk southeast alaska forecast discussion national weather service juneau ak 401 am akdt Tue jun 27 2017 Short term Upper ridge will sharpen up over the far E gulf today then push onshore tonight. Weak shortwave trof will move ne across the N gulf and NE gulf coast this afternoon and tonight. A weak occluded front will move into the SW gulf today, then stall there as low pressure develops and moves N to the SW gulf by wed night. For the most part, current forecast was still looking reasonable, although did make some tweaks based on current conditions and model trends. Main forecast concerns will be precip potential, cloud cover, and winds. With upper ridge sharpening up over the far E gulf, the shower activity over the panhandle will decrease today. However, along the NE gulf coast, will see an increase in precip threat late this afternoon and tonight as weak shortwave moves in. Have pops rising to categorical by early this evening in the NE gulf coast area. This shortwave will also increase precip threat over the N panhandle tonight, but pops will generally remain at chance levels or less over the N area. After shortwave moves by the area wed, precip threat will decrease again along the NE gulf coast and N panhandle. The S half will see showers diminish in coverage through this evening, with the most coverage remaining along the coast mtns. Cloud forecast is a bit trickier as it will depend on how much moisture remains trapped under subsidence inversion especially over the far se. Think the N and central areas will keep enough moisture trapped under the inversion for stratus or stratocu to persist, although a few small breaks may occur late in the afternoon as low level heating could cause shallow cumulus to form. This cumulus should flatten out to stratocu this evening once temps begin to cool. Going with mostly cloudy to cloudy skies for the N and central areas through wed. Over the far SE part of the area, the stratus stratocu layer appears to be thinner, so some cumulus formation there could allow for larger breaks in the lower clouds. There will be some mid-level clouds moving through the area in warm advection pattern ahead of building ridge this morning, but these clouds should diminish this afternoon and tonight as ridge axis pushes onshore. Am going with mostly cloudy |
for the far se, but short duration of partly cloudy could occur late this afternoon. As for winds, low level ridging offshore is causing a SCA level tip jet near CAPE spencer, and a lesser jet near CAPE decision. As low level ridge moves onshore today, these jets should weaken. For the N inner channels, moderate strength southerly pressure gradient will remain into tonight, with some diurnal enhancement during the afternoon and early evening. Going with SCA level s winds during the afternoon and evening hours for N lynn canal, with 15-20 kt for S lynn canal. Over the gulf, SCA level winds will be likely over the SW part of the offshore waters tonight and wed, with SCA possible in the far NW part of the gulf coastal marine area wed. This is being caused by approach of occluded front from the SW through tonight and developing low moving N toward the sw gulf Wed and Wed night. Long term Friday through Tuesday... As of 1000 pm mon... An upper level ridge located east of the southeastern alaska region with an associated surface high pressure will remain over the area, influencing conditions for Friday into Saturday. Deep layer onshore flow and plenty of moisture will fuel a sustained cloud low level deck. Multiple shortwave troughs will then progress east out of the gulf, originating from a broad area of low pressure located over the central gulf, impacting the region through this weekend. Long range models are in general agreement for accumulating amounts of precipitation through this weekend into Monday. As the systems make their approach, timing of precipitation will become clearer. Pops were analyzed using mainly the GFS model ensemble and then trended more with wpc guidance. Pressure and wind updates blended towards GFS through Friday, then towards wpc through the remainder of the long range period. Overall confidence is average. Ajk watches warnings advisories Public... None. Marine... Small craft advisory for pkz012-022-041>043. Small craft advisory due to seas for pkz052. Rwt fritsch voveris visit us at http: |
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 |
| PLXA2 - 9451054 - Port Alexander, AK | 5 mi | 50 min | SSW 4.1 G 6 | 55°F | 49°F | 1022.6 hPa | ||
| CDEA2 - Cape Decision, AK | 31 mi | 130 min | WNW 18 G 26 | |||||
| FFIA2 - Five Finger, AK | 94 mi | 32 min | SSE 1.9 G 4.1 | 50°F | 1021.6 hPa (+0.3) |
Wind History for Port Alexander, AK
(wind in knots) EDIT (on/off) Help| 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 | 8 AM | 9 AM | |
| Last 24hr | SW G9 | SW | SE | NW G12 | W G12 | SW G10 | SW G11 | W G11 | W G8 | NW G12 | W G13 | SW G17 | NW | W | NW G6 | W G15 | W G8 | NW G7 | N | -- | -- | W | SW | SW G8 |
| 1 day ago | W | -- | -- | -- | -- | S | SW | S | SW | E | E | -- | -- | -- | -- | NE | W G7 | S G7 | E | NW G5 | NW G14 | S | SE G5 | W G14 |
| 2 days ago | -- | -- | NE | SE | E | E | S G11 | SE G5 | -- | S G4 | -- | -- | -- | -- | -- | NE | -- | -- | -- | -- | -- | -- | -- | NW |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
Wind History from AAP (wind in knots)
| 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 | 8 AM | 9 AM | 10 AM | 11 AM | |
| Last 24hr | NW G20 | N G25 | Calm | |||||||||||||||||||||
| 1 day ago | NE G25 | NE G15 | ||||||||||||||||||||||
| 2 days ago | W | N | Calm | E |
Tide / Current Tables for Cape Ommaney, Baranof Island, Alaska
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Cape Ommaney Click for Map Tue -- 03:14 AM AKDT 10.74 feet High Tide Tue -- 04:13 AM AKDT Sunrise Tue -- 09:06 AM AKDT Moonrise Tue -- 10:01 AM AKDT -2.19 feet Low Tide Tue -- 04:32 PM AKDT 9.45 feet High Tide Tue -- 09:50 PM AKDT Sunset Tue -- 10:18 PM AKDT 2.23 feet Low 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 |
| 5.6 | 7.9 | 9.8 | 10.7 | 10.4 | 8.8 | 6.2 | 3.2 | 0.5 | -1.5 | -2.2 | -1.5 | 0.4 | 3 | 5.8 | 8 | 9.3 | 9.3 | 8.3 | 6.6 | 4.7 | 3.1 | 2.3 | 2.5 |
Tide / Current Tables for Port Alexander, Baranof Island, Alaska
EDIT (on/off) Help One Week of Data| Port Alexander Click for Map Tue -- 03:25 AM AKDT 12.09 feet High Tide Tue -- 04:12 AM AKDT Sunrise Tue -- 09:06 AM AKDT Moonrise Tue -- 10:04 AM AKDT -2.27 feet Low Tide Tue -- 04:44 PM AKDT 10.86 feet High Tide Tue -- 09:50 PM AKDT Sunset Tue -- 10:21 PM AKDT 2.23 feet Low 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 |
| 5.9 | 8.5 | 10.7 | 12 | 11.8 | 10.2 | 7.5 | 4.1 | 0.9 | -1.4 | -2.3 | -1.6 | 0.4 | 3.2 | 6.3 | 8.9 | 10.5 | 10.8 | 9.8 | 7.8 | 5.4 | 3.4 | 2.3 | 2.5 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of PacificNorthwest EDIT  |
Wind Forecast for (13,3,4,5)
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Ground Weather Radar Station Biorka Is., 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. |