Thursday, April27, 2017 L-36.com


Marine Weather and Tides
Halibut Cove, 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 5:57AMSunset 9:56PM Wednesday April 26, 2017 11:14 PM AKDT (07:14 UTC) Moonrise 5:08AMMoonset 8:16PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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PKZ141 Kachemak Bay- 306 Pm Akdt Wed Apr 26 2017
Tonight..SW wind 10 kt. Seas 3 ft.
Thu..S wind 10 kt. Seas 3 ft.
Thu night..S wind 15 kt. Seas 2 ft.
Fri..SE wind 10 kt. Seas 2 ft.
Fri night..E wind 10 kt. Seas 2 ft.
Sat..E wind 10 kt. Seas 2 ft.
Sun through Mon..E wind 15 kt. Seas 3 ft.

7 Day Forecast for Marine Location Near Halibut Cove, AK
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location: 59.51, -151.22     debug


Area Discussion for -
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Fxak68 pafc 270012
afdafc
southcentral and southwest alaska forecast discussion
national weather service anchorage ak
412 pm akdt Wed apr 26 2017

Analysis and upper levels
The upper level pattern over the state consists of the large low
in the south-central bering sea and a ridge extending out of
canada into the northern interior. This is keeping south to
southeast flow over southern mainland alaska with some short wave
embedded in the southeasterly flow over the gulf of alaska into
southcentral.

Model discussion
Models are still holding close together for the next few days with
no significant differences to discuss. As we get into the weekend,
there is a general breakdown in consistency between models in the
low complexes in both the bering sea and gulf of alaska. The
periods of light precipitation in southcentral this weekend will
be dictated by weak upper level features which are not discernible
yet.

Aviation
Panc...VFR conditions and light winds will persist through
Thursday.

Short term forecast southcentral alaska (days 1 and 2)
Weak cyclonic flow aloft combined with a weakly unstable airmass
will continue to produce isolated to scattered showers through
Thursday afternoon, primarily over the mountains and during the
afternoon and evening hours. A slightly more substantial short-
wave will lift northward across the kenai peninsula and on up to
the susitna valley Thursday night. With generally weak south to
southeast flow (very little in the way of downsloping) and an
increase in instability as upper level temps cool, it looks
favorable for some light rain from the western kenai peninsula to
anchorage and portions of the mat-su. A much larger more
significant upper trough will swing into the gulf on Friday which
will produce increased showers over the gulf while broad-scale
cyclonic flow over southcentral will lead to mainly diurnal
showers, focused along the mountains once again.

Winds will generally remain on the light side. As the trough
swings into the gulf on Friday a ridge will strengthen along the
north gulf coast. This will lead to stronger sea breezes and more
notably, gusty afternoon and evening winds through turnagain arm
into part of anchorage, along the knik river valley into palmer,
and along the copper river.

Short term forecast southwest alaska (days 1 and 2)
Scattered rain showers are expected to continue through this
evening across southwest alaska as weak upper level disturbances
push through the area. Portions of the kuskokwim delta, mainly
from bethel westwards, will likely see patchy fog develop
overnight with some clearing skies coupled with a moist and stable
airmass. Some locations could see visibilities as low as one half
of a mile at times but the nature of radiation fog makes it very
difficult to pinpoint where exactly the fog will be the thickest.

The rest of the week will see clearing skies which will allow
temperatures to warm a few degrees warmer than previous days.

Colder air aloft has filtered in across the region which has aided
in creating a conditionally unstable air mass. Scattered to
widespread rain showers will be possible, especially near the
mountains, Thursday and Friday but thunderstorm potential looks
rather unlikely with not enough instability or forcing available.

Short term forecast bering sea/aleutians (days 1 and 2)
Isolated to scattered rain showers will continue across much of
the bering sea through Thursday with an upper level low near the
central aleutians slowly meandering eastward. Fog near the
pribilof islands should re-develop under a rather unstable air
mass but should finally mix out Thursday afternoon. All eyes then
turn to a frontal boundary pushing through the western half of
the bering sea late Thursday into Friday. This should help bring
back a nice swath of gale force winds along the frontal boundary
with periods of light to moderate rainfall. This front will move
to the alaska peninsula by late Friday night but will have
weakened substantially by the time it makes it that far east.

Long term forecast (days 3 through 7)
The long-term forecast looks like a continuation of the rather
cloudy pattern that has spread across much of mainland alaska. The
main feature for the weekend and into mid next week is a low that
will be tracking through the bering over the weekend and then move
across the alaska peninsula and eventually into the gulf of alaska
next week. There is good model agreement with this system through
the weekend giving higher confidence for showers across the
southern mainland and around the bering for much of the long term.

Early next week areas along the north gulf coast look to see more
steady rain as the low moves towards the gulf.

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

Marine... Gales 177 178 411.

Fire weather... None.

Synopsis and model discussion... Ez
southcentral alaska... Sb/ps
southwest alaska/bering sea/aleutians... Mc
long term... Dk


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HMRA2 - Kachemak Bay Reserve, AK 12 mi45 min WNW 6 41°F 1001 hPa40°F
OVIA2 - 9455500 - Seldovia, AK 27 mi45 min 42°F
46108 - Central Cook Inlet - 175 33 mi37 min 41°F1 ft
FILA2 - Flat Island Light, AK 43 mi45 min SW 1.9 G 1.9 41°F 1002.1 hPa41°F
AMAA2 - East Amatuli Light, AK 57 mi45 min NNW 7 G 8 41°F 1002.6 hPa40°F

Wind History for Nikiski, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Homer, Homer Airport, AK17 mi22 minN 010.00 miOvercast43°F37°F80%1002.6 hPa

Wind History from AHO (wind in knots)
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Last 24hrE4CalmCalmCalmCalmCalmNE3NE3CalmCalmCalmSW5SW5W8W9W7SW8SW10W9W8W10W9W4Calm
1 day agoCalmW3CalmCalmCalmCalmCalmCalmCalmCalmSE3SE3S34CalmS5SW6SW6W6SW5SW4S4CalmCalm
2 days agoCalmCalmCalmE3E9E5E11E12E11
G17
5E6E6E7SE3E5CalmE4SW7W5W6CalmW3SW3Calm

Tide / Current Tables for Halibut Cove, Kachemak Bay, Cook Inlet, Alaska
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Halibut Cove
Click for Map
Thu -- 03:29 AM AKDT     22.55 feet High Tide
Thu -- 06:14 AM AKDT     Sunrise
Thu -- 07:34 AM AKDT     Moonrise
Thu -- 09:49 AM AKDT     -4.88 feet Low Tide
Thu -- 04:12 PM AKDT     21.26 feet High Tide
Thu -- 09:52 PM AKDT     Sunset
Thu -- 10:01 PM AKDT     -0.92 feet Low Tide
Thu -- 11:45 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.614.419.322.222.119.113.77.10.7-3.7-4.8-2.52.38.414.519.121.220.316.711.35.50.9-0.90.6

Tide / Current Tables for Homer, Kachemak Bay, Cook Inlet, Alaska
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Homer
Click for Map
Thu -- 03:22 AM AKDT     22.05 feet High Tide
Thu -- 06:15 AM AKDT     Sunrise
Thu -- 07:34 AM AKDT     Moonrise
Thu -- 09:53 AM AKDT     -4.98 feet Low Tide
Thu -- 04:05 PM AKDT     20.76 feet High Tide
Thu -- 09:53 PM AKDT     Sunset
Thu -- 10:05 PM AKDT     -1.02 feet Low Tide
Thu -- 11:46 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.414.319.221.821.518.313.16.70.6-3.7-4.9-2.82.18.314.418.920.819.61610.85.30.9-10.4

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.