Friday, August7, 2020
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Marine Weather and Tides
Hoonah, AK

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:01AMSunset 9:04PM Friday August 7, 2020 4:52 AM AKDT (12:52 UTC) Moonrise 9:42PMMoonset 8:47AM Illumination 87% Phase: Waning Gibbous; Moon at 18 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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PKZ021 Icy Strait- 336 Am Akdt Fri Aug 7 2020
Today..E wind 15 kt. Seas 3 ft. Rain.
Tonight..E wind 20 kt. Seas 4 ft. Showers.
Sat..SE wind 15 kt. Seas 3 ft in the morning then 2 ft or less. Showers.
Sat night..E wind 25 kt. Seas 5 ft. Rain.
Sun..E wind 15 kt. Seas 4 ft.
Mon..SE wind 15 kt. Seas 3 ft.
Tue..Light winds becoming W 10 kt. Seas 2 ft or less.


7 Day Forecast for Marine Location Near Hoonah, AK
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location: 58.2, -135.58     debug


Area Discussion for -
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FXAK67 PAJK 062309 AFDAJK

Southeast Alaska Forecast Discussion National Weather Service Juneau AK 309 PM AKDT Thu Aug 6 2020

SYNOPSIS. A ridge of high pressure over the Inner Channels shifts east Thursday night as a weather front lifts northeast across the eastern gulf and makes landfall across Southeast Alaska Friday morning. Its parent low remains in the Northwest gulf Friday through early Saturday as a ridge of high pressure forms over the Panhandle.

SHORT TERM. /Through early Sunday/ A weak front brings organized light to moderate rain tonight across the Panhandle with some light southerly breezes. IVT values from models for this suggest nothing out of the ordinary for Southeast Alaska this time of year. Indeed our wet summer predictably drives on. In fact, QPF was lowered slightly for this system. Southerly and southeasterlies should give way to southwesterlies Friday afternoon post-frontal passage. Relatively strong onshore flow and cooler temperatures aloft support showery precipitation Friday night into Saturday. Normal to slightly below normal temperatures will persist the next couple of days. In fact, the warmest temperatures through the early weekend will be late this afternoon.

We reserved the most significant changes to the forecast for a new developing system for late this weekend. After the front on Friday, a progressive pattern continues. A much more potent storm for early August appears in the central gulf Saturday night. Although IVT values up around 600 kg/m/s get our attention, its brief stay should allay fears of a lengthy heavy rain episode. Yakutat and the northeast gulf will be the first to experience bands of potential heavy rain Saturday night. This could spread east into the northern Panhandle by early Sunday. QPF for this period will run higher than the Thursday night/Friday system. We made significant changes to winds over the gulf, raising the northeast outer waters to 35 to 40 kt easterlies ahead of the low. We also began raising wind speeds across the Inner Channels, but should the track and strength predictions hold, look for higher winds in the forecast, especially for late this weekend.

Forecast changes through Friday night were far less consequential than Saturday into early Sunday. For Friday night into Saturday we favored the NAM and NAMNest, and then added the Canadian and ECMWF for help Saturday through early Sunday. The GFS remains the outlier with a slower track across the gulf for the more impactful second system.

LONG TERM. /Sun through Thu as of 10 pm Wed/A broad trough extending into the Gulf will be the dominant pattern through the long range forecast. The result will continue the cool, cloudy and wet conditions that have been the story for nearly the entire summer thus far.

A vorticity max Sunday should enhance showers. But greater anticyclonic flow should help decrease PoP chances into Monday. Currently the forecast shows weak ridging building into the region Tuesday night into Wednesday. PoP chances decrease enough that lead to the suggestion some areas could possibly see a brief break from rain and perhaps even a chance to get some peaks of sun during the day. The forecast however is confounded though by the fact that flow looks to remain largely onshore which could promote orographically induced showers. Therefore, at that far out, it is difficult to predict exactly where or when that break may happen with any certainty. Any break though will be short-lived as another low pressure system takes aim on the panhandle toward the end of the period.

Forecast confidence on specifics remains less that favorable due to model discrepancies, however, confidence is pretty good in the overall trend being mostly cool and wet.

AVIATION. The main attention focuses on falling conditions and some weak wind shear tonight. Surface winds could rise overnight, but guidance does not support big rises by any means. At this point, only Yakutat looks to fall to IMC late tonight.

MARINE. A front across the central gulf will rapidly increase winds along the outer gulf coast. The front should support 25 kt southeasterlies through frontal passage Friday morning. Then southwesterlies will build 8-foot seas thereafter. Small craft advisories are likely for Lynn Canal and Stephens Passage Friday night post-frontal passage.

AJK Watches/Warnings/Advisories. PUBLIC . None. MARINE . Small Craft Advisory for PKZ036-041>043-051-052.



JWA/JDR

Visit us at http://www.weather.gov/Juneau


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GUXA2 16 mi20 min ESE 4.1 G 8 54°F 1000 hPa50°F
BLTA2 - Bartlet Cove AK 24 mi26 min E 2.9 G 4.1 53°F
RIXA2 28 mi20 min ESE 11 G 14 54°F 1000.3 hPa51°F
NKXA2 34 mi20 min N 2.9 G 7 54°F 1001.4 hPa51°F
TKEA2 - Tenakee Springs, AK 35 mi20 min NE 1.9 G 5.1 53°F 1001.2 hPa53°F
PRTA2 - Point Retreat, AK 36 mi42 min S 4.1 G 8.9 53°F 1003.6 hPa53°F
LIXA2 37 mi20 min SSE 9.9 G 15 54°F 1001.1 hPa51°F
ELFA2 - 9452634 - Elfin Cove, AK 41 mi52 min 52°F 50°F1002.7 hPa (-1.0)
GEXA2 42 mi19 min ENE 7 G 11 53°F 999.9 hPa51°F
PTLA2 45 mi20 min ENE 5.1 G 8 55°F 1002 hPa52°F

Wind History for Juneau, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoonah - Hoonah Seaplane Base, AK9 mi1.9 hrsE 410.00 miLight Rain54°F52°F93%1003.4 hPa
Gustavus, Gustavus Airport, AK17 mi56 minESE 710.00 miLight Rain54°F51°F90%1003.2 hPa

Link to 5 minute data for PAOH

Wind History from AOH (wind in knots)
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Last 24hrCalm--Calm--CalmE3CalmCalmCalmCalmCalm--E6--W6--CalmE4Calm--E3E4--E4
1 day agoCalmE4E3--CalmE7E5E7E8W4Calm----E4--NW3CalmCalmCalm--CalmSE3CalmCalm
2 days agoE9E8E9--NE96NE9E8
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Tide / Current Tables for Flynn Cove, Icy Strait, Alaska
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Flynn Cove
Click for Map
Fri -- 03:49 AM AKDT     14.61 feet High Tide
Fri -- 05:08 AM AKDT     Sunrise
Fri -- 09:47 AM AKDT     Moonset
Fri -- 10:09 AM AKDT     -0.72 feet Low Tide
Fri -- 04:33 PM AKDT     14.14 feet High Tide
Fri -- 09:05 PM AKDT     Sunset
Fri -- 10:29 PM AKDT     2.12 feet Low Tide
Fri -- 10:41 PM AKDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.79121414.613.410.87.23.40.6-0.7-02.45.89.312.213.91412.59.96.73.92.32.4

Tide / Current Tables for Hoonah Harbor, Port Frederick, Alaska
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Hoonah Harbor
Click for Map
Fri -- 03:55 AM AKDT     14.61 feet High Tide
Fri -- 05:08 AM AKDT     Sunrise
Fri -- 09:47 AM AKDT     Moonset
Fri -- 10:13 AM AKDT     -0.72 feet Low Tide
Fri -- 04:39 PM AKDT     14.14 feet High Tide
Fri -- 09:04 PM AKDT     Sunset
Fri -- 10:33 PM AKDT     2.12 feet Low Tide
Fri -- 10:40 PM AKDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.58.711.813.914.613.611.17.53.70.7-0.7-0.12.15.591213.81412.710.174.12.42.3

Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (8,2,3,4)
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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 numerous 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.