Saturday, December7, 2019
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Marine Weather and Tides
Coffman Cove, AK

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 8:27AMSunset 3:11PM Saturday December 7, 2019 3:04 AM AKST (12:04 UTC) Moonrise 2:58PMMoonset 3:26AM Illumination 80% Phase: Waxing Gibbous; Moon at 10 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- 255 Pm Akst Fri Dec 6 2019
Tonight..Light winds becoming ne 10 kt late. Seas 2 ft or less.
Sat..E wind 10 kt. Seas 2 ft or less.
Sat night..E wind 10 kt. Seas 2 ft or less.
Sun..E wind 10 kt. Seas 2 ft or less.
Sun night..E wind 10 kt. Seas 2 ft or less.
Mon..E wind 15 kt. Seas 3 ft.
Tue..E wind 15 kt. Seas 3 ft.
Wed..E wind 20 kt. Seas 4 ft.


7 Day Forecast for Marine Location Near Coffman Cove, AK
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location: 56.02, -132.92     debug


Area Discussion for -
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FXAK67 PAJK 070001 AFDAJK

Southeast Alaska Forecast Discussion National Weather Service Juneau AK 301 PM AKST Fri Dec 6 2019

SHORT TERM. An upper level ridge will build over the gulf tonight, shifting jet stream level flow out of the NW. This will help the scattered to numerous showers over the central panhandle to weaken some. A surface trough will cause the showers to shift northward through the evening. Most places are cold enough to see a mix, but little accumulation is expected.

Through Saturday night the upper level ridge will shift east over the panhandle and turn flow back out of the W-SW. This "dirty ridge" will allow more clouds and moisture to flow into the northern panhandle, but should be able to hold back the main front over the west-central gulf from making further progress. The warm front portion of the front however, will be able to cause steady rain on Saturday to become moderate to heavy Saturday night in Yakutat. The warm air will cause snow levels to gradually rise through the weekend, resulting in a change to all rain.

The upper level trough/ridge pattern becomes more amplified Sunday night with the ridge sharpening over the panhandle. This will cause the warm frontal rain to be pushed back off the panhandle. The Ketchikan area in particular will be stay dry through the period.

LONG TERM. / Sunday to Friday as of 10 pm Thursday / Ridge axis aloft at 500 mb is pushed east of the Southeast Alaska panhandle by Sunday night but the upper trough to the west is trying to nose further into the western gulf. As it does a long southerly fetch aloft will move to the eastern half of the gulf which will lead to increase onshore flow of warm and moister air.

The flow pattern will have some rain for the central gulf coast, perhaps over to the Icy Bay-Yakutat Bay region on Sunday and as the ridge shifts eastward the increase in clouds over at least the northern panhandle will happen along with a small bump in rain changes. Mid to long range models solution still hanging on to the idea that significant frontal band will spread in around Tuesday and a followup around Thursday. Will need to keep a watch and monitor this situation as it develops.

With the overall southerly flow pattern, temperatures should remain above average for the season. And no strong wind events is expected through the week.

AJK Watches/Warnings/Advisories. PUBLIC . None. MARINE . Small Craft Advisory for PKZ041>043-051-052.



Ferrin/Bezenek

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LCNA2 - Lincoln Rock, AK 12 mi55 min N 7 G 9.9 37°F 1010 hPa33°F
CDEA2 - Cape Decision, AK 64 mi43 min ENE 5.1 G 7 38°F 1011.4 hPa35°F
KECA2 - 9450460 - Ketchikan, AK 84 mi53 min Calm G 1.9 31°F 44°F1010.2 hPa

Wind History for Ketchikan, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for PAKW

Wind History from AKW (wind in knots)
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Last 24hrS6--S6W5--S3--CalmCalmCalmNW3CalmNE4--CalmCalm--------------NE4
1 day ago----S9
G16
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2 days ago------SW7--SW3--S4Calm--S4--SE7Calm----CalmNE3------------

Tide / Current Tables for Lake Bay, Alaska
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Lake Bay
Click for Map
Sat -- 02:25 AM AKST     Moonset
Sat -- 02:49 AM AKST     4.11 feet Low Tide
Sat -- 08:07 AM AKST     Sunrise
Sat -- 09:28 AM AKST     14.73 feet High Tide
Sat -- 01:57 PM AKST     Moonrise
Sat -- 03:18 PM AKST     Sunset
Sat -- 03:44 PM AKST     2.88 feet Low Tide
Sat -- 10:00 PM AKST     12.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.164.54.14.96.68.911.413.414.614.513.110.67.753.32.93.95.88.310.612.212.812.2

Tide / Current Tables for Exchange Cove, Alaska
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Exchange Cove
Click for Map
Sat -- 02:26 AM AKST     Moonset
Sat -- 02:52 AM AKST     4.11 feet Low Tide
Sat -- 08:09 AM AKST     Sunrise
Sat -- 09:27 AM AKST     13.83 feet High Tide
Sat -- 01:57 PM AKST     Moonrise
Sat -- 03:17 PM AKST     Sunset
Sat -- 03:47 PM AKST     2.88 feet Low Tide
Sat -- 09:59 PM AKST     11.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.75.84.54.14.86.38.510.812.613.713.612.410.17.44.93.32.93.85.57.79.911.411.911.3

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 (7,2,3,4)
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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 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.