|
Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
Sunrise 8:18AM | Sunset 6:07PM | Friday February 22, 2019 7:04 AM AKST (16:04 UTC) | Moonrise 10:12PM | Moonset 8:54AM | Illumination 89% | ![]() |
PKZ141 Kachemak Bay- 333 Am Akst Fri Feb 22 2019
Today..NE wind 15 kt becoming N 10 kt in the afternoon. Seas 2 ft.
Tonight..NE wind 10 kt. Seas 2 ft.
Sat..Variable wind less than 10 kt becoming ne 10 kt in the afternoon. Seas 2 ft.
Sat night..E wind 10 kt. Seas 2 ft.
Sun..E wind 10 kt. Seas 2 ft.
Mon through Tue..Variable wind less than 10 kt. Seas 2 ft.
Today..NE wind 15 kt becoming N 10 kt in the afternoon. Seas 2 ft.
Tonight..NE wind 10 kt. Seas 2 ft.
Sat..Variable wind less than 10 kt becoming ne 10 kt in the afternoon. Seas 2 ft.
Sat night..E wind 10 kt. Seas 2 ft.
Sun..E wind 10 kt. Seas 2 ft.
Mon through Tue..Variable wind less than 10 kt. Seas 2 ft.
7 Day Forecast for Marine Location Near Seldovia, AK
Hourly EDIT Helplocation: 59.45, -151.72 debug
Area Discussion for -
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFxak68 pafc 221421 afdafc southcentral and southwest alaska forecast discussion national weather service anchorage ak 521 am akst Fri feb 22 2019 Analysis and upper levels The main feature to note is a ridge that spreads from the bering sea to the western gulf of alaska. At the mid-levels cold air is advecting over the mainland around the ridge. With this cold air advection, northerly offshore flow dominates mainland alaska. To the west of the ridge, southerly flow is pushing warm, moist air over the western aleutians. At the surface, an occluded front is finishing its progression through the gulf and intensifying the offshore flow through southcentral. The offshore flow is enhancing gusty conditions through thompson pass, prince william sound and the western gulf. A nearly stationary surface high pressure ridge is keeping much of southcentral clear and dry. To the west of the ridge however, a large swath of clouds can be observed in satellite imagery over the western aleutians. This region is associated with the remnants of a strong low that progressed through the bering yesterday. Gusty conditions persist through the bering and western aleutians. The next bering storm is advancing from the north pacific towards the central aleutians today. Model discussion Numerical models are in good agreement through Saturday. At that point, models begin to diverge as a north pacific low moves into the southern bering on Saturday morning. At this point, the american models are moving faster while the ECMWF and canadian trail behind through Saturday morning. By Saturday afternoon, the models diverge further with a large spread between the solutions. The american solutions, once again, are producing stronger winds through Sunday while the ec and canadian, while fairly strong themselves, are depicting this storm slightly weaker. Aviation Panc...VFR conditions and light winds will persist as high pressure builds through the area. The chance of fog becomes higher Friday evening. Clear skies through the day, temperature drops overnight and calming winds will aid in the fog formation. Short term forecast southcentral alaska (days 1 through 3) (tonight through Sunday) outflow winds will slowly diminish across the eastern kenai peninsula and north gulf coast through this afternoon. Although considerably weaker, high pressure and cold air inland will sustain outflow winds across the north gulf coast. Stratus and fog become the main weather challenge tonight through Saturday night as the upper ridge builds over southcentral. Fog will likely develop over interior valleys, along cook inlet, and across knik and turnagain arm during the overnight hours and could persist into the late morning to early afternoon hours. Otherwise, generally fair skies and cooler temperatures are expected over the next couple of days. Short term forecast southwest alaska (days 1 and 2 Friday through Saturday night)... a front associated with a departing low moving over siberia will continue to bring scattered snow showers to coastal areas along the kuskokwim delta through the morning. Meanwhile, a ridge building over the gulf will favorably influence conditions across the akpen and areas further inland through this evening. This will allow for generally quiet conditions and mostly clear skies, though areas of patchy fog are likely for low lying areas across bristol bay and the lower kuskokwim valley. A second north pacific low moves into the bering this evening bringing a large area of moist southerly flow to the eastern bering. This front will slowly push eastward over southwest for Saturday morning, bringing precipitation across the area for Saturday evening. Temperatures will be warm enough for rain across the akpen while a rain snow mix or wet snow will be possible along the northern kuskokwim delta coast. |
Short term forecast bering sea aleutians (days 1 and 2 Friday through Saturday night)... a departing low continues to influence the bering with a lingering occluded front oriented north to south over the pribilofs. This front continues to advect warm southerly flow over the southern bering. In its wake, a second low forms along a fertile baroclinic zone in the north pacific. This second gale force low will move over the western aleutians this afternoon, continuing to advect warm southerly flow and moisture across the bering. By Saturday morning, the low moves northward and is centered northwest of saint paul island. Southerly gales persist, continuing the stream of warm moist air into the eastern bering. As the low lifts northward out of the bering Sat evening, its associated front pushes eastward. Meanwhile, cold air moves in over the western bering as a weak ridge attempts to build over the central aleutians. This attempt is quickly stifled by an incoming storm force low, bound for the western aleutians for Sunday. Marine (days 3 through 5) Once again, the main area of active weather with strong wind will be over the bering sea Sunday through Tuesday. Sunday begins with a ridge extending across the eastern bering sea with a large strong storm crossing the western aleutians. This storm should pack storm force winds in advance of it with the potential for a brief period of hurricane force winds possible in the central to western aleutians as well as the western bering sea offshore zones. By Monday the low weakens but we should still see some storm force winds close in to the low over the central bering sea with gales across much of the eastern bering sea to the southwest coast. By Tuesday, this storm continues its northward trek as yet another gale to storm force low crosses the western and central aleutians. Meanwhile the gulf of alaska remains under high pressure and we are not anticipating any significant wind for the gulf region Sunday through Tuesday. Long term forecast (days 3 through 7) For the extended period, Sunday through Saturday, high pressure over the gulf of alaska and southern mainland will result in benign conditions for the southern mainland. The large upper level high will likely lead to the development of inversions through southcentral and may result in more foggy conditions. Also, we are expecting very warm 850 mb (~5000 ft) temperatures over the southern mainland that could result in some unseasonably warm temperatures along with large diurnal fluctuations for areas that aren't trapped under an inversion. The southwest mainland will see temperatures running 10 to 20 degrees above normal with persistent southwesterly flow through the week. Out west, we have a very active pattern on tap for next week. We start off with a strong storm to hurricane force low over the western bering and western aleutians that treks north across the bering as a ridge over the eastern bering gets pushed east over the mainland. After this low moves out of the bering, another strong storm force low is on tap for the western and central aleutians. By the later half of the week the lows are a bit weaker as they trek across the aleutians and bering sea. A weak ridge pokes up across the central aleutians to the eastern bering sea Friday. Lastly, another storm force low will impact the western aleutians and western bering sea Saturday. Afc watches warnings advisories Public... Winter weather advisory: 131. Marine... Gales: 121 127 128 130 131 150 155 165 170 172-177 179 180 181 185 411-414. Fire weather... None. Synopsis and model discussion... Rja southcentral alaska... Rc southwest alaska bering sea aleutians... Dk ko marine long term... Sa kvp |
Weather Reporting Stations
EDIT (on/off)  Help NOTE: Click on distance to see the station location on a mapStations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
OVIA2 - 9455500 - Seldovia, AK | 1 mi | 34 min | 41°F | 1021.5 hPa | ||||
46108 - Central Cook Inlet - 175 | 12 mi | 34 min | 42°F | 4 ft | ||||
FILA2 - Flat Island Light, AK | 17 mi | 34 min | N 21 G 24 | 34°F | 1020.9 hPa | 17°F | ||
HMRA2 - Kachemak Bay Reserve, AK | 19 mi | 94 min | ENE 13 | 31°F | 1020 hPa | 12°F | ||
HMSA2 | 19 mi | 22 min | ENE 12 G 19 | 28°F | 1021.4 hPa | 15°F | ||
APXA2 | 23 mi | 79 min | ENE 1.9 | 17°F | 1022 hPa | 8°F | ||
AMAA2 - East Amatuli Light, AK | 39 mi | 34 min | W 11 G 21 | 34°F | 1020.3 hPa | 23°F |
Wind History for Nikiski, AK
(wind in knots) EDIT (on/off)  Help7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | -12 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 | |
Last 24hr | NE | E | E G6 | SE | S | S | S G10 | S G11 | S | S | SE G9 | SE G6 | E | SE | E | NE | NE G16 | NE G18 | NE G13 | NE G16 | NE G17 | NE G16 | E | |
1 day ago | E | E | SE | E | E | E G8 | NE | E G13 | NE G12 | NE G11 | NE G17 | NE G15 | NE G16 | NE G17 | NE G18 | NE G16 | NE G17 | NE G20 | NE G20 | NE G19 | NE G17 | NE G16 | NE | NE |
2 days ago | NW | NE G5 | E | NE | NE | NE | NE | NE | NE | NE | E | E | E | E |
Airport Reports
EDIT (on/off)  Help Click EDIT to display multiple airportsAirport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
Seldovia, Seldovia Airport, AK | 1 mi | 71 min | N 8 | 10.00 mi | Fair | 30°F | 16°F | 56% | 1021.5 hPa |
Homer, Homer Airport, AK | 18 mi | 71 min | NE 8 | 10.00 mi | Fair | 28°F | 10°F | 47% | 1021.9 hPa |
Wind History from ASO (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 | N | N | N | Calm | Calm | Calm | N | NE G14 | N | N | N | N G21 | N | N | Calm | N | N | |||||||
1 day ago | Calm | Calm | Calm | N | N | N | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | N | N | N G16 | N G18 | N | |||
2 days ago | N | N | G18 | Calm | N | N | N | N | N | N | N | N | Calm | N | Calm | Calm | Calm | Calm | Calm |
Tide / Current Tables for Seldovia, Alaska
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of DataSeldovia
Click for Map
Fri -- 04:18 AM AKST 21.74 feet High Tide
Fri -- 08:23 AM AKST Sunrise
Fri -- 09:54 AM AKST Moonset
Fri -- 10:21 AM AKST -1.98 feet Low Tide
Fri -- 04:31 PM AKST 20.89 feet High Tide
Fri -- 06:17 PM AKST Sunset
Fri -- 10:39 PM AKST -2.84 feet Low Tide
Fri -- 11:12 PM AKST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 04:18 AM AKST 21.74 feet High Tide
Fri -- 08:23 AM AKST Sunrise
Fri -- 09:54 AM AKST Moonset
Fri -- 10:21 AM AKST -1.98 feet Low Tide
Fri -- 04:31 PM AKST 20.89 feet High Tide
Fri -- 06:17 PM AKST Sunset
Fri -- 10:39 PM AKST -2.84 feet Low Tide
Fri -- 11:12 PM AKST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
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 | 8 pm | 9 pm | 10 pm | 11 pm |
2 | 8 | 14.2 | 19.1 | 21.6 | 21 | 17.6 | 12.3 | 6.2 | 1 | -1.8 | -1.3 | 2 | 7.1 | 12.7 | 17.6 | 20.5 | 20.6 | 17.8 | 13 | 7 | 1.5 | -2.1 | -2.6 |
Tide / Current Tables for Port Graham, Alaska
EDIT (on/off)  Help One Week of DataPort Graham
Click for Map
Fri -- 04:11 AM AKST 20.74 feet High Tide
Fri -- 08:23 AM AKST Sunrise
Fri -- 09:54 AM AKST Moonset
Fri -- 10:07 AM AKST -1.98 feet Low Tide
Fri -- 04:23 PM AKST 19.89 feet High Tide
Fri -- 06:18 PM AKST Sunset
Fri -- 10:25 PM AKST -2.84 feet Low Tide
Fri -- 11:12 PM AKST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 04:11 AM AKST 20.74 feet High Tide
Fri -- 08:23 AM AKST Sunrise
Fri -- 09:54 AM AKST Moonset
Fri -- 10:07 AM AKST -1.98 feet Low Tide
Fri -- 04:23 PM AKST 19.89 feet High Tide
Fri -- 06:18 PM AKST Sunset
Fri -- 10:25 PM AKST -2.84 feet Low Tide
Fri -- 11:12 PM AKST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
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 | 8 pm | 9 pm | 10 pm | 11 pm |
2.8 | 8.6 | 14.4 | 18.7 | 20.7 | 19.7 | 16.1 | 10.6 | 4.7 | 0 | -2 | -0.8 | 2.7 | 7.7 | 13 | 17.3 | 19.7 | 19.4 | 16.3 | 11.3 | 5.5 | 0.4 | -2.5 | -2.3 |
Weather Map and Satellite Images
(on/off)  HelpWeather Map
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
(on/off)  HelpAd by Google
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. |