Monday, August10, 2020
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Marine Weather and Tides
Ketchikan, 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 6:01AMSunset 9:18PM Monday August 10, 2020 12:30 PM PDT (19:30 UTC) Moonrise 11:05PMMoonset 1:08PM Illumination 57% Phase: Waning Gibbous; Moon at 22 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- 316 Am Akdt Mon Aug 10 2020
Today..S wind 15 kt. Seas 3 ft early in the morning then 2 ft or less. NEar ocean entrances, seas 5 ft. Showers early in the morning.
Tonight..S wind 10 kt. Seas 2 ft or less.
Tue..Light winds. Seas 2 ft or less.
Tue night..NW wind 10 kt. Seas 2 ft or less.
Wed..S wind 10 kt. Seas 2 ft or less.
Thu..W wind 10 kt. Seas 2 ft or less.
Fri..S wind 10 kt. Seas 3 ft.


7 Day Forecast for Marine Location Near Ketchikan, AK
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location: 55.22, -132.1     debug


Area Discussion for -
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FXAK67 PAJK 101417 AFDAJK

Southeast Alaska Forecast Discussion National Weather Service Juneau AK 617 AM AKDT Mon Aug 10 2020

SHORT TERM. It has been a rather wet and windy night for much of the northern panhandle. The low that brought the wind and rain yesterday is currently just NE of Yakutat and is moving into the southern Yukon weakening as it goes. Meanwhile, the reduced, but still strong SW onshore flow that brought the rain and wind to the northern panhandle last evening is still ongoing. Gusts up to 39 kt were observed at some locations, and 25 to 35 kt winds are still blowing in Lynn Canal, Cross Sound, and Stephens Passage right now due to the strong Southerly pressure gradiant. Rainfall has totaled up to 1 to 3 inches over the last 12 hours. There is currently a band of rain extended from Cross Sound over to Gustavus and into Juneau that has persisted for most of the night though the southern edge has moved north of Angoon and Sitka.

The first half of the short range features a diminishing trend in rain and wind as what is left of the current system weakens and move off to the NE. Rain and winds will diminish by Mon evening as the strong SW flow continues to diminish in intensity. However, winds in Lynn Canal, Haines, and Skagway may last into Mon night as lingering southerly pressure gradient persists across the north. Extended the higher winds for that area accordingly. Overall guidance was in decent agreement so mainly focused on local effects for winds and qpf.

Past Monday night, the forecast noticeably quiets down with lighter onshore flow as a weak ridge begins to build in the eastern gulf. Showers will still be persistent but much more scattered and weaker then they were on Mon. Winds will also have quieted down as pressure gradients across the panhandle slacken off. Overall changes were minor and mainly featured some local effect changes for wind direction. Favored GFS and Nam for any overall updates.

LONG TERM. /Wednesday morning through Sunday night/ . Much quieter weather in the long range forecast period after the recent strong summer storm has swept through the area. The extended range begins with a weakening upper low located over the north Gulf Coast and WNW upper flow across Southeast Alaska. As the low gets ejected to the southeast, a brief ridge will move in and cause northwesterly flow Thursday afternoon/evening. This will leave us in the middle ground when it comes to chances for precip through mid week. As a surface ridge shifts to the east Thursday night, drier conditions will return briefly, but the break will not last long. By Friday night, a triple point will develop along a frontal boundary over the south-central gulf and spread precipitation in over the southern Panhandle by late Friday night. rain will spread north through the day Saturday, reaching the northeast Gulf Coast by Sunday morning. Thank goodness, we will once again have a weekend with no fire weather concerns. Through the long range, winds over the Gulf and inner channels will not be impactful, especially after the big blow on Sunday/Sunday night.

GFS and ECMWF used for updates to the long range grids. Forecast confidence is average trending below average.

HYDROLOGY. Overnight rainfall caused several spikes in northern rivers and streams. Mendenhall Lake and River in particular rose up above minor flood stage around 330 am and is still going up. It is currently at 9.2 ft as of 5 am. A flood advisory is up until noon for that river system. The Taiya River also rose rather rapidly overnight and also passed minor flood stage around 4 am through the rate of rise has slowed since then. It is currently just above minor flood stage of 16.5 ft as of 5 am. There is also a flood advisory out until noon for this river system as well. Other rivers and streams in the north did display spikes overnight, but have since crested either below or just above bankfull stage and shown definite decreasing trends. As such decided to cancel the flood watch that was out for the Juneau zone as rainfall rate continue to decrease.

AJK Watches/Warnings/Advisories. PUBLIC . Areal Flood Advisory until noon AKDT today for AKZ018-025. Strong Wind until 10 AM AKDT this morning for AKZ019-025. Strong Wind until 1 PM AKDT this afternoon for AKZ018. MARINE . Gale Warning for PKZ012-022. Small Craft Advisory for PKZ013-021-031-032-041>043-051>053.



EAL/Fritsch

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GIXA2 19 mi18 min SW 1.9 G 7 57°F 1020.1 hPa51°F
KEXA2 24 mi18 min ESE 6 G 12 57°F 1022.4 hPa48°F
KECA2 - 9450460 - Ketchikan, AK 26 mi42 min SE 9.9 G 13 57°F1023.1 hPa
SLXA2 26 mi17 min SSE 8.9 G 13 56°F 1019.9 hPa50°F
MRYA2 49 mi18 min S 1 G 5.1 58°F 53°F
46145 - Central Dixon Entrance Buoy 61 mi30 min W 5.8 G 9.7 55°F 56°F12 ft1023.6 hPa (-0.3)
LCNA2 - Lincoln Rock, AK 66 mi20 min SSE 4.1 G 6 55°F 1020.9 hPa55°F

Wind History for Ketchikan, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ketchikan, Ketchikan International Airport, AK23 mi37 minN 010.00 miOvercast57°F48°F74%1023 hPa

Link to 5 minute data for PAKT

Wind History from AKT (wind in knots)
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SE11SE8SE96SE6SE8SE9SE9SE5SE6E5S3SE5SE4SE3SE4SE3S3SE5SE4--SE7Calm
1 day agoSE9E7E10SE9------E7----------------------SE20
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2 days agoE8SE7--CalmSE6E8SE8SE8SE5SE5SE5SE5SE5--SE5S4SE5SE5--E3Calm----SE9

Tide / Current Tables for Lancaster Cove, Cholmondeley Sound, Alaska
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Lancaster Cove
Click for Map
Mon -- 05:14 AM AKDT     Sunrise
Mon -- 05:33 AM AKDT     11.45 feet High Tide
Mon -- 11:29 AM AKDT     3.13 feet Low Tide
Mon -- 01:08 PM AKDT     Moonset
Mon -- 06:01 PM AKDT     12.68 feet High Tide
Mon -- 08:31 PM AKDT     Sunset
Mon -- 11:04 PM AKDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.24.36.28.310.211.311.310.38.46.34.43.33.34.46.38.610.612.112.712.210.78.56.34.4

Tide / Current Tables for Niblack Anchorage, Moira Sound, Alaska
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Niblack Anchorage
Click for Map
Mon -- 05:14 AM AKDT     Sunrise
Mon -- 05:33 AM AKDT     10.95 feet High Tide
Mon -- 11:33 AM AKDT     3.13 feet Low Tide
Mon -- 01:08 PM AKDT     Moonset
Mon -- 06:01 PM AKDT     12.18 feet High Tide
Mon -- 08:31 PM AKDT     Sunset
Mon -- 11:04 PM AKDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.14.15.97.99.710.810.89.98.26.14.43.33.24.268.210.211.612.211.710.38.36.24.4

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 (15,3,4,5)
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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 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.