Sunday, April23, 2017

Marine Weather and Tides
Port Graham, 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 6:09AMSunset 9:45PM Saturday April 22, 2017 9:35 PM AKDT (05:35 UTC) Moonrise 3:50AMMoonset 2:26PM Illumination 9% 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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PKZ141 Kachemak Bay- 320 Pm Akdt Sat Apr 22 2017
Tonight..NE wind 10 kt. Seas 2 ft.
Sun..NE wind 10 kt. Seas 2 ft.
Sun night..NE wind 10 kt. Seas 2 ft.
Mon..NE wind 10 kt. Seas 2 ft.
Mon night..Variable wind less than 10 kt. Seas 2 ft.
Tue through Thu..Variable wind less than 10 kt. Seas 2 ft.

7 Day Forecast for Marine Location Near Port Graham, AK
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location: 59.22, -151.73     debug

Area Discussion for -
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Fxak68 pafc 230007
southcentral and southwest alaska forecast discussion
national weather service anchorage ak
407 pm akdt Sat apr 22 2017

Analysis and upper levels
A highly amplified ridge stretches across much of mainland alaska
southeastward towards the pacific northwest. This stubborn ridge
continues to spread a swatch of sunny skies and relatively warm
temperatures across eastern and southcentral portions of alaska.

South of the southcentral mainland, conditions are quite
different. Just to the south of this ridge a potent trough
stretches across the alaska peninsula and digs southeastward into
the north pacific. An associated surface front is supporting
gusty winds and steady rains across much of kodiak island, the
alaska peninsula, and bristol bay.

Meanwhile, a low spinning south of the central aleutian islands
is supporting gale force winds across the western bering and
western aleutian islands. Its associated front stretches across
the western and central bering and into the north pacific, and is
bringing rain to the eastern aleutian islands.

Model discussion
Models are in generally good agreement over the short term, as the
front across kodiak and the alaska peninsula slowly weakens but
drifts northward towards the kenai peninsula by Sunday. The gfs
model was favored for the bering sea and bristol bay as the low south
of the aleutians continues to push eastward over the next few
days. For southcentral, the NAM was favored to capture local winds
as the front drifts northward.

Panc...VFR conditions and light winds will persist.

Short term forecast southcentral alaska (days 1 and 2)
Dry conditions will continue through much of southcentral alaska
through Sunday but then the area will see a brief reprieve on
Monday as a wave from the south pushes some moisture into the
area. Most of the rain will stay along the north gulf coast due to
the flow being east to southeast during this time. However, some
light showers may sneak through the coastal ranges.

Short term forecast southwest alaska (days 1 and 2)
Moist southeast flow on the periphery of the large bering sea
trough will keep the southwest mainland in a cloudy and showery
regime through the start of the work week. The most widespread
shower activity will favor upslope areas along the kilbuck
mountains, while the persistent southeast flow will tend to keep
locations along the western side of the aleutian and alaska ranges
mostly dry due to downsloping. Temperatures will generally
continue to run above seasonal normal values, but will also be
moderated somewhat by the extensive cloud cover over the region.

Short term forecast bering sea/aleutians (days 1 and 2)
Broad cyclonic flow will yield widespread showers across the
bering sea through Monday as the sprawling trough and attendant
surface low near the western aleutians shift eastward, then
gradually weaken in the vicinity of adak through early next week.

The region will also continue to see the typical widespread
marine stratus, with an easterly component to the winds as the low
fills in over the central part of the chain.

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... Gales 411.

Fire weather... None.

Synopsis and model discussion... En
southcentral alaska... Dk
southwest alaska/bering sea/aleutians... Cb
long term... Ss

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OVIA2 - 9455500 - Seldovia, AK 15 mi48 min 42°F
FILA2 - Flat Island Light, AK 16 mi36 min E 7 G 8.9 46°F 1006.3 hPa (-1.5)37°F
AMAA2 - East Amatuli Light, AK 24 mi36 min ENE 23 G 26 42°F 1006.1 hPa (-1.4)40°F
46108 - Central Cook Inlet - 175 27 mi58 min 41°F1 ft
HMRA2 - Kachemak Bay Reserve, AK 31 mi66 min ESE 8.9 46°F 1006 hPa36°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seldovia, Seldovia Airport, AK15 mi43 minVar 310.00 miMostly Cloudy45°F35°F68%1007.1 hPa

Wind History from ASO (wind in knots)
Last 24hrN4NE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm564NE7NE9N11N7NE833
1 day agoCalmCalmCalmCalmS3CalmS3CalmCalmCalmCalmCalmCalmN7NE6N6N63NE4Calm534N5
2 days agoCalmS5S5SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmN6N6N6N65N3N4N4N3CalmCalm

Tide / Current Tables for Port Chatham, Cook Inlet, Alaska
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Port Chatham
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Sun -- 12:32 AM AKDT     12.87 feet High Tide
Sun -- 06:09 AM AKDT     Moonrise
Sun -- 06:28 AM AKDT     Sunrise
Sun -- 06:30 AM AKDT     2.04 feet Low Tide
Sun -- 12:42 PM AKDT     12.90 feet High Tide
Sun -- 05:50 PM AKDT     Moonset
Sun -- 06:43 PM AKDT     0.71 feet Low Tide
Sun -- 09:43 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Picnic Harbor, Rocky Bay, Alaska
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Picnic Harbor
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Sun -- 12:04 AM AKDT     11.52 feet High Tide
Sun -- 06:08 AM AKDT     Moonrise
Sun -- 06:13 AM AKDT     1.68 feet Low Tide
Sun -- 06:27 AM AKDT     Sunrise
Sun -- 12:15 PM AKDT     11.60 feet High Tide
Sun -- 05:48 PM AKDT     Moonset
Sun -- 06:29 PM AKDT     0.32 feet Low Tide
Sun -- 09:42 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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

GOES Local Image of Alaska    EDIT

Ground Weather Radar Station Kenai, AK
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weather_mapweather_map weather_map

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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 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 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.