Sunday, April23, 2017 L-36.com


Marine Weather and Tides
Seward, AK

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:06AMSunset 9:48PM Sunday April 23, 2017 11:50 AM AKDT (19:50 UTC) Moonrise 5:02AMMoonset 4:40PM Illumination 6% Phase: Waning Crescent; Moon at 27 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PKZ121 Resurrection Bay- 319 Am Akdt Sun Apr 23 2017
Today..N wind 10 kt becoming S in the afternoon. Seas 2 ft. Higher seas S of caines head.
Tonight..S wind 10 kt becoming N after midnight. Seas 2 ft. Higher seas S of caines head.
Mon..N wind 10 kt becoming S in the afternoon. Seas 2 ft. Higher seas S of caines head. Rain.
Mon night..N wind 10 kt. Seas 2 ft.
Tue..N wind 10 kt. Seas 2 ft.
Wed through Thu..S wind 10 kt. Seas 2 ft.

7 Day Forecast for Marine Location Near Seward, AK
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location: 60.13, -149.42     debug


Area Discussion for -
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Fxak68 pafc 231303
afdafc
southcentral and southwest alaska forecast discussion
national weather service anchorage ak
503 am akdt Sun apr 23 2017

Analysis and upper levels
A broad area of cyclonic flow reigns over much of the aleutians
with the parent low west of adak. Impulse after impulse brings
pacific moisture into the domain... With batches of disturbed
weather from the kenai peninsula to the western aleutians.

Model discussion The models are in good agreement through the
short term. This forecast package incorporated a blend of the nam
to better reflect some of the local winds and localized qpf.

Beyond 72 hrs the models diverge over the handling of the system
in the gulf of alaska... With the GFS beginning the most bullish,
steering it into SE ak. Meanwhile... The latest runs of the NAM and
ecmwf are progging it to remain in the gulf of ak and being
blocked by the ridge. For the closed low over the western
aleutians... The gem/nam/ecmwf and GFS are tightly clustered with
the position of the h5 low.

Aviation
Panc...VFR conditions are expected for the period. The turnagain
arm wind will bend north resulting in southeasterly gusts at panc
beginning at 00z.

Short term forecast southcentral alaska (days 1 and 2)
High pressure over southcentral alaska will slide east and north
of the area by tonight. A weak weather front that is bringing some
showers to the kenai peninsula will slowly drift north on Monday.

This front will move onto the gulf coast during the afternoon and
evening hours. Most of the rain will fall along the coast and
coastal mountains, with only chance/slight chance pops for inland
areas.

Short term forecast southwest alaska (days 1 and 2 Sun and mon)...

the pattern will not change much over the next few days. A broad
low will become entrenched over the bering leaving SW ak in
warm/moist southeast flow. The bulk of the energy associated with
the warm front is lifting through this morning. This is resulting
in some steady precipitation across portions of bristol bay and
the yk- delta, especially along favored upslope areas like the
kilbuck mountains. The rain should become more showery as we move
through the day as instability increases with some colder air
aloft moving in. This instability could also help to mix down some
gusty winds this afternoon, especially through southeast to
northwest oriented gaps. Things will remain showery and
temperatures will continue to hold above seasonal normals to start
the work week.

Short term forecast bering sea/aleutians (days 1 and 2 Sun and
mon)...

a very broad low will leave the entire region under cyclonic flow
for the next few days as it establishes residence over the central
aleutians. It will pinwheel moisture around from the north
pacific and gulf of ak and ferry it from east to west across the
bering. The first contiguous batch of moisture is associated with
the warm front over SW ak that is also being stretched through the
pribilofs as it slowly decays. It will also make for typical
widespread marine stratus and some patchy fog as the warmer air
moves over the colder bering sea. On the extreme western flank of
the circulation, some rain/snow showers will try to develop along
with some gustier winds. But even these will only affect the
westernmost aleutians.

Long term forecast (days 3 through 7)
As has been advertised, the days of endless sunshine are coming to
a close. The start of the work week will have an overall increase
in clouds across the mainland. Showers will increase from coastal
locations and some inland areas, but the majority of the anchorage
metro should be rain shadowed. A large but weakening low pressure
system currently moving into the central aleutians will slowly
make its way to southwest alaska. Winds should remain relatively
light throughout the state as the overall pressure gradient will
be minimal.

Afc watches/warnings/advisories
Public... None.

Marine... None.

Fire weather... None.

Synopsis and model discussion... Pjs
southcentral alaska... Bl
southwest alaska/bering sea/aleutians... Mso
long term... Ss


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SWLA2 - 9455090- Seward, AK 1 mi50 min 42°F
PILA2 - Pilot Rock, AK 27 mi50 min N 7 G 8 43°F 1006.9 hPa (+0.0)42°F
46081 - Western Prince William Sound 77 mi60 min NNE 3.9 G 3.9 44°F 46°F1007.5 hPa (-0.4)38°F

Wind History for Anchorage, AK
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seward, AK2 mi57 minN 010.00 miOvercast44°F39°F83%1007.1 hPa

Wind History from AMR (wind in knots)
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Last 24hr43N9N5NE5NW6NW5NW4SW4CalmCalmCalmCalmCalmN3CalmN3SE4W4CalmCalmCalmW3Calm
1 day agoN7NW8NW8NW66SW6N35W6W4N4N3CalmCalmN3CalmNE3N3CalmCalmCalmN7NE5N7
2 days agoNW5N6W9NW6W8W7SW6W7SW3S6SW3CalmCalmCalmN3CalmCalmCalmCalmCalmCalm4N5N4

Tide / Current Tables for Seward, Resurrection Bay, Alaska
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Seward
Click for Map
Sun -- 05:49 AM AKDT     1.60 feet Low Tide
Sun -- 06:01 AM AKDT     Moonrise
Sun -- 06:15 AM AKDT     Sunrise
Sun -- 11:50 AM AKDT     9.23 feet High Tide
Sun -- 05:39 PM AKDT     Moonset
Sun -- 06:03 PM AKDT     0.42 feet Low Tide
Sun -- 09:37 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.38.575.13.21.91.62.33.75.77.68.99.28.674.92.71.10.40.92.54.87.29.2

Tide / Current Tables for Aialik Bay, North end, Alaska
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Aialik Bay
Click for Map
Sun -- 05:52 AM AKDT     1.59 feet Low Tide
Sun -- 06:02 AM AKDT     Moonrise
Sun -- 06:17 AM AKDT     Sunrise
Sun -- 11:49 AM AKDT     9.36 feet High Tide
Sun -- 05:41 PM AKDT     Moonset
Sun -- 06:08 PM AKDT     0.31 feet Low Tide
Sun -- 09:38 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.48.67.15.33.421.62.33.85.87.799.38.77.25.231.20.30.82.44.87.39.2

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
npac_satellite

GOES Local Image of Alaska    EDIT
Geos

Ground Weather Radar Station Kenai, AK
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weather_mapweather_map weather_map

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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.