Thursday, September21, 2017 L-36.com


Marine Weather and Tides
Hyder, AK

Version 3.4
What's New / NOTES
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 7:19AMSunset 7:34PM Thursday September 21, 2017 12:38 PM PDT (19:38 UTC) Moonrise 8:01AMMoonset 7:38PM Illumination 1% 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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PKZ036 Clarence Strait- 417 Am Akdt Thu Sep 21 2017
Today..NW wind 10 kt. Seas 2 ft or less.
Tonight..NW wind 10 kt becoming se late. Seas 3 ft. Rain.
Fri..SE wind 10 kt. Seas 2 ft or less. Rain in the morning.
Fri night..SE wind 10 kt. Seas 2 ft or less.
Sat..SE wind 15 kt. Seas 3 ft.
Sun..SE wind 15 kt. Seas 4 ft.
Mon..SE wind 15 kt. Seas 4 ft.

7 Day Forecast for Marine Location Near Hyder, AK
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location: 55.77, -130.18     debug


Area Discussion for -
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Fxak67 pajk 211424
afdajk
southeast alaska forecast discussion
national weather service juneau ak
624 am akdt Thu sep 21 2017

Synopsis A front will track eastward across the gulf Thursday,
and it will pass over the panhandle Thursday night through
Friday. A weak low pressure system will pass over the southern
panhandle Friday night. Another front will pass over the
panhandle later this weekend into early Monday.

Short term Thursday through Friday as of 530 am a dry morning
will change to a wet evening Thursday. A low lying stratus deck is
currently passing over the panhandle ahead of a weather front
located over the central gulf. Some foggy conditions are expected
this morning with dense fog present near petersburg and wrangell.

Fog is not expected to be as widespread or as long lasting as
yesterday due to the passage of an upper level shortwave trough
which acted to provide some vertical mixing of the air inhibiting
fog formation persistence.

A ridge of high pressure over the panhandle will weaken today as a
front approaches from the west but will sharpen up tonight as it
gets pushed up against the coast mountains. Cloud cover will
increase through the day as the front tracks east. Yakutat will
see the earliest onset of precipitation associated with the front
with rain expected to begin during the early afternoon hours. The
outer coast stays dry a bit longer where rain will begin sometime
during the late afternoon and early evening hours. This rain
quickly spreads over the extent of the panhandle with rain in the
forecast everywhere by late Thursday night.

Tomorrow will begin with widespread showers across the panhandle.

Shower activity decreases through the day and becomes isolated to
scattered over the northern panhandle by tomorrow night. The
southern panhandle follows the same trend of decreasing showers
through the day, but a weak low pressure system will bring a
second wave of rain into the southern panhandle Friday night.

Winds will increase as the front progresses east with strongest
winds expected over the northeastern gulf where gales are
expected between icy CAPE to CAPE suckling. Winds will increase
in the inner channels as well; however, winds in excess of 15 kts
are not expected outside ocean entrances and cross sound. Some
vertical shear is also possible along the outer coast this evening
as the front passes.

Winds were increased slightly over the gulf with gales now in the
forecast for zone 52. In addition, land winds were reduced
slightly and pop values were increased along the front. A blend of
the NAM and GFS were used as primary guidance, but some hi-res
model input was used to help with winds over the inner channels.

Long term Saturday through Thursday... The upper level ridge of
high pressure, currently positioned over the gulf, will continue
to weaken and move east into canada and the western conus, while
an upper level trough continues to dig into the the alaska
mainland on Saturday. An upper level shortwave will develop out
of this parent trough and lift northeast across the northern gulf,
impacting portions of SE alaska. This system and its associated
weather front will bring increased precipitation across the
panhandle, with increasing intensity beginning Sunday and
continuing into early Monday. A subtropical jet feature coupled
with this shortwave should advect large amounts of moisture,
mainly aimed for haida gwaii and western portions of british
columbia, but we expect southern portions of the panhandle to see
some heavier precipitation with this setup. Models continue to
indicate anomalously high precipitable water amounts with this
event.

For adjustments to the forecast, we used a combination of the
ecmwf, canadian, and the NAM during the weekend and into the early
part of next week, leaning more towards the ec. We trended
more towards wpc guidance after the Tuesday period. After the day
6 timeframe, models have had a more difficult time agreeing on
the synoptic pattern, so a lot of uncertainty remains in our
forecast past the Tuesday Wednesday period.

Ajk watches warnings advisories
Public... Dense fog advisory until 10 am akdt this morning for akz026.

Marine... Gale warning for pkz052.

Small craft advisory for pkz041>043-051.

Byrd voveris
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KECA2 - 9450460 - Ketchikan, AK 82 mi57 min SSE 1 G 1.9 57°F 53°F1019.2 hPa

Wind History for Ketchikan, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Metlakatla, Metlakatla Seaplane Base, AK78 mi43 minW 310.00 miFair54°F48°F83%1018.8 hPa

Wind History from AMM (wind in knots)
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Last 24hrNW8NW9NW10--NW12NW8NW8--NW7--E3Calm--E4CalmCalmN3E3--CalmCalm----W3
1 day agoW3W3Calm--E5CalmCalm--CalmN3--E3CalmCalmN10E3--N11N6
G16
4--N12N12N9
2 days agoSW5SW7SW8SW9SW10SW7SW3W5--S4S3E3CalmCalmCalmCalm--E3--CalmCalmCalmCalm--

Tide / Current Tables for Davis River entrance, Alaska
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Davis River entrance
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Thu -- 01:54 AM AKDT     18.05 feet High Tide
Thu -- 06:24 AM AKDT     Sunrise
Thu -- 08:00 AM AKDT     -1.19 feet Low Tide
Thu -- 08:00 AM AKDT     Moonrise
Thu -- 02:11 PM AKDT     18.19 feet High Tide
Thu -- 06:41 PM AKDT     Sunset
Thu -- 07:37 PM AKDT     Moonset
Thu -- 08:20 PM AKDT     -0.86 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1417.11816.6138.23.50.1-1.20.13.58.112.816.518.117.414.49.95.11.2-0.7-0.32.36.3

Tide / Current Tables for Halibut Bay, Alaska
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Halibut Bay
Click for Map
Thu -- 01:49 AM AKDT     17.45 feet High Tide
Thu -- 06:24 AM AKDT     Sunrise
Thu -- 07:55 AM AKDT     -0.99 feet Low Tide
Thu -- 08:00 AM AKDT     Moonrise
Thu -- 02:07 PM AKDT     17.59 feet High Tide
Thu -- 06:40 PM AKDT     Sunset
Thu -- 07:37 PM AKDT     Moonset
Thu -- 08:15 PM AKDT     -0.66 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
13.816.617.415.912.37.73.20-10.43.88.312.716.117.616.713.79.34.71.1-0.6-02.66.6

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

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for (15,3,4,5)
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Ground Weather Radar Station Biorka Is., 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.