Saturday, August18, 2018 L-36.com


Marine Weather and Tides
Petersburg, AK

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Sunrise 5:24AMSunset 8:38PM Friday August 17, 2018 8:39 PM AKDT (04:39 UTC) Moonrise 1:45PMMoonset 11:10PM Illumination 42% Phase: Waxing Crescent; Moon at 7 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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PKZ035 Sumner Strait- 345 Pm Akdt Fri Aug 17 2018
Tonight..W wind 10 kt in the evening becoming light. Seas 2 ft or less.
Sat..Light winds becoming W 10 kt in the afternoon. Seas 2 ft or less.
Sat night..W wind 10 kt. Seas 2 ft or less.
Sun..NW wind 10 kt. Seas 2 ft or less.
Sun night..NW wind 10 kt. Seas 2 ft or less.
Mon..Light winds becoming W 10 kt. Seas 2 ft or less.
Tue..SW wind 15 kt. Seas 3 ft.
Wed..S wind 10 kt becoming w. Seas 2 ft or less.


7 Day Forecast for Marine Location Near Petersburg, AK
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location: 56.63, -132.93     debug


Area Discussion for -
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Fxak67 pajk 172237
afdajk
southeast alaska forecast discussion
national weather service juneau ak
237 pm akdt Fri aug 17 2018

Short term A small area of low pressure just off the coast of
pow island will weaken to a trough as it crosses the far southern
panhandle eastward into canada Friday evening. A deformation band
assoc with the low caused periods of rain over the area today,
mainly from frederick sound south. On the back side of this band,
areas to the north, skies become partly cloudy rather quickly. As
the low continues its eastward track, expect conditions to
similarly improve over the southern panhandle.

A ridge will start building over the gulf tonight. The upper level
jet will be forced north with the ridge, this will likely cause some
more high clouds through the late afternoon and evening as it moves
over the northern panhandle. The ridge will strengthen on
Saturday and remain offshore, allowing for a dry predominately
nwly flow over the inner channels. Winds should remain fairly
light with this pattern, but dominated by diurnal sea breezes in
the late afternoon. See the marine section below for more details.

A front will push into the central gulf through Sunday. This will be
held off by our ridge. But have some increasing s-se winds over the
outside waters along the front and increased clouds for the yakutat
area Sunday night.

Temperatures will be several degrees warmer than we've seen this
past week, and Sunday warmer than Saturday. Some potential for
patchy fog during the early morning hours, but will have incoming
tide during that time, so wont have the added moisture of an
outgoing tide.

Models did well with the position of the rain band this morning but
were too far north with the position of the low center. Overall this
only affected the wind field slightly. Most adjustments made to this
forecast package were for local effects discussed above.

Long term Sunday through Friday as of 10 pm Thursday ... A
robust high pressure ridge over the E gulf will provide for a very
pleasant Sunday and Monday for most of SE alaska's panhandle.

Expecting temperatures to be above normal, especially across the
central and southern inner channels, with plentiful Sun and given
the strong ridging and forecasted 850 mb layer temps.

Models have come into better agreement on handling a front slowly
tracking into the central gulf by early Monday. Made minor
adjustments to the previous forecast to boost the central gulf
winds along the front Sunday through early Tuesday. Used a blend
of GFS nam early on, then GFS ec as well as some wpc guidance,
which brought stronger winds into the central gulf along with an
indication of a barrier jet setting up along the N gulf. Kept the
wind speeds just below gale force but could possibly see them
increasing.

The front is currently forecast to advance into the yakutat area
late Sunday early Monday with a good amount of rain likely.

Tuesday onward mostly left the long range forecast alone since
models differ with timing and intensity of the front pushing into
the panhandle. Depending on how long the ridge is able to hold
out, likely to see a transition back to a wetter pattern north to
south Tuesday through most of the work week.

Marine The building ridge of high pressure over the eastern
gulf will cause winds through the inner channels to turn more
nwly. Expect nearly calm winds and seas during the early morning
hours. Afternoons will have winds increasing to around 10kt for
most locations due to sea breezes. This can cause variable wind
directions from one side of a channel to the other. Strongest
winds of around 15-20kt will likely be southerly at the northern
end of lynn canal, westerly through the icy strait s. Douglas cut
and nwly through clarence strait.

Ajk watches warnings advisories
Public... None.

Marine... None.

Ferrin ddh
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LCNA2 - Lincoln Rock, AK 42 mi30 min E 6 G 8 57°F 1024.4 hPa56°F
FFIA2 - Five Finger, AK 58 mi40 min Calm G 0 56°F 1025.9 hPa (+1.0)

Wind History for Port Alexander, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petersburg, AK13 mi44 minN 010.00 miMostly Cloudy53°F52°F96%1026.9 hPa

Wind History from APG (wind in knots)
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Last 24hrCalmSW3CalmCalmW4CalmCalmCalmSW4W3CalmCalmCalmN4NE4NE3E3CalmE3E5E4E3E3Calm
1 day agoE3S3CalmSW3SW3CalmCalmCalmCalmCalmCalmCalmCalmE5E3E6NE6E5NE6E3E5NE3E3Calm
2 days agoSE3CalmCalmCalmCalmCalmCalmSW3CalmW3CalmCalmN3NE4E4E4E5E5NE4E4E3E4E4E4

Tide / Current Tables for Anchor Point, Cook Inlet, Alaska
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Anchor Point
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Sat -- 01:16 AM AKDT     1.98 feet Low Tide
Sat -- 05:26 AM AKDT     Sunrise
Sat -- 07:15 AM AKDT     12.16 feet High Tide
Sat -- 01:18 PM AKDT     3.71 feet Low Tide
Sat -- 02:56 PM AKDT     Moonrise
Sat -- 07:26 PM AKDT     14.14 feet High Tide
Sat -- 08:22 PM AKDT     Sunset
Sat -- 11:35 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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322.446.59.111.112.111.910.68.66.44.73.845.67.910.612.8141412.810.78.1

Tide / Current Tables for Point Lockwood, Woewodski Island, Wrangell Narrows, Alaska
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Point Lockwood
Click for Map
Sat -- 12:56 AM AKDT     2.08 feet Low Tide
Sat -- 05:27 AM AKDT     Sunrise
Sat -- 07:15 AM AKDT     11.76 feet High Tide
Sat -- 12:58 PM AKDT     3.81 feet Low Tide
Sat -- 02:56 PM AKDT     Moonrise
Sat -- 07:26 PM AKDT     13.74 feet High Tide
Sat -- 08:22 PM AKDT     Sunset
Sat -- 11:35 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.12.84.56.89.110.911.711.410.18.15.94.43.84.468.310.612.613.613.512.310.17.5

Weather Map and Satellite Images
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wmap_P
GOES Local Image of PacificNorthwest    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (0,6,7,8)
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Ground Weather Radar Station Biorka Is., AK
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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.