Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Petersburg, 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 6:27AMSunset 7:36PM Wednesday March 29, 2017 2:58 PM AKDT (22:58 UTC) Moonrise 7:36AMMoonset 9:52PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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- 1045 Am Akdt Wed Mar 29 2017
Today..SE wind 15 kt. Seas 3 ft...except 6 ft near ocean entrances. Rain showers early in the morning.
Tonight..S wind 15 kt. Seas 3 ft...except 6 ft near ocean entrances.
Thu..S wind 15 kt. Seas 3 ft.
Thu night..SE gale to 35 kt. Gusts to 50 kt. Seas 7 ft. Rain.
Fri..SE wind 30 kt diminishing to 20 kt. Seas 5 ft.
Sat..E wind 20 kt. Seas 4 ft.
Sun..E wind 15 kt. Seas 3 ft.

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 291405
afdajk
southeast alaska forecast discussion
national weather service juneau ak
605 am akdt Wed mar 29 2017

Short term Today through Wednesday night. South to southwest
flow aloft is the story over all of the ak panhandle today. The
embedded waves in this flow will bring periods of enhanced
rainfall over the region in this wet pattern which will persist
through Wednesday night.

The main change in the forecast stems from a wave developing just
south of the gulf of alaska this afternoon which will move into
the southeast gulf tonight. This will not bring a big change in
the winds but could extend the precipitation later into tonight
across much of SE alaska and could shorten the break between
systems Thursday.

Current short term forecasts had some GFS guidance added. NAM also
had a good handle on the developing wave which was more diffuse on
the ecmwf. 06z model runs of the GFS and NAM were continuing the
development of this feature.

Long term /Thursday through Tuesday night/ a high end gale
force low is forecast to enter the western gulf on Thursday. Gale
force winds with the associated front will arrive over outer coast
on Thursday evening and extend from CAPE suckling south pas the
dixon entrance. Peak conditions expected on the inside late
Thursday night with gales forecast for clarence strait, sumner
strait, southern portions of chatham strait, and cross sound.

Elsewhere on the inside, small craft winds forecast except for
northern lynn canal, where a parallel gradient should result in
winds 20 kt or less.

Precipitation from this front will arrive along the outer coast
late Thursday afternoon or Thursday evening. Significant low level
warm air advection associated with this front will push snow
levels higher, limiting snow to the higher elevations of the
highways.

Wpc, the 00z gfs, and the 12z ECMWF model runs presented moderate
to good agreement at 500 mb on the placement of troughs, short
waves, and upper level ridges. A ridge extending from bc southwest
to coastal waters west of washington state will become suppressed
over the weekend but then rebuild early next week. Temperatures
from Thursday into Friday were warmed slightly.

Confidence in the extended range forecast is average.

Ajk watches/warnings/advisories
Public... None.

Marine... Small craft advisory for pkz051-052.

Small craft advisory due to seas for pkz022-041>043-053.

Ez/bezenek/fritsch
visit us at http://

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LCNA2 - Lincoln Rock, AK 42 mi48 min Calm G 4.1 43°F 1008.1 hPa40°F
FFIA2 - Five Finger, AK 58 mi58 min SSE 8 G 11 41°F 1009.4 hPa (+0.5)
CDEA2 - Cape Decision, AK 77 mi36 min S 8.9 G 14

Wind History for Port Alexander, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petersburg, AK13 mi62 minWSW 310.00 miLight Rain42°F39°F92%1009.8 hPa

Wind History from APG (wind in knots)
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Last 24hrE4E4CalmCalmW4CalmCalmCalmCalmCalmCalmSW5Calm------CalmCalmW4W3CalmW3CalmSW3
1 day agoSE3SE7CalmCalmCalmCalmCalm------------------CalmCalmCalm--E3CalmE3Calm
2 days agoE6E7SE6E5SE4CalmCalmCalm----------------NE4SW4CalmS6E3E7SE8SE8

Tide / Current Tables for Anchor Point, Cook Inlet, Alaska
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Anchor Point
Click for Map
Wed -- 02:33 AM AKDT     18.39 feet High Tide
Wed -- 06:28 AM AKDT     Sunrise
Wed -- 07:36 AM AKDT     Moonrise
Wed -- 08:58 AM AKDT     -2.27 feet Low Tide
Wed -- 02:56 PM AKDT     17.72 feet High Tide
Wed -- 07:25 PM AKDT     Sunset
Wed -- 09:09 PM AKDT     -1.11 feet Low Tide
Wed -- 09:51 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.915.31818.2161272.3-1.1-2.3-0.83.18.11316.517.716.413.18.640.5-1.1-0.13.2

Tide / Current Tables for Point Lockwood, Woewodski Island, Wrangell Narrows, Alaska
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Point Lockwood
Click for Map
Wed -- 02:33 AM AKDT     17.99 feet High Tide
Wed -- 06:28 AM AKDT     Sunrise
Wed -- 07:36 AM AKDT     Moonrise
Wed -- 08:38 AM AKDT     -2.17 feet Low Tide
Wed -- 02:56 PM AKDT     17.32 feet High Tide
Wed -- 07:25 PM AKDT     Sunset
Wed -- 08:49 PM AKDT     -1.01 feet Low Tide
Wed -- 09:51 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.315.317.617.815.411.261.3-1.6-20.148.813.216.317.315.912.47.63-0.1-10.64.2

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 (18,4,5,8)
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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.