Monday, September25, 2017 L-36.com


Marine Weather and Tides
Yakutat, AK

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 7:53AMSunset 7:49PM Monday September 25, 2017 5:03 PM PDT (00:03 UTC) Moonrise 12:35PMMoonset 8:34PM Illumination 28% Phase: Waxing Crescent; Moon at 5 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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PKZ053 Yakutat Bay- 316 Pm Akdt Mon Sep 25 2017
Tonight..Light winds becoming ne 10 knots late. Seas 5 feet, except 2 feet or less E side of the bay.
Tue..NE wind 15 knots. Seas 6 feet, except 3 feet E side of the bay. SE swell in the afternoon.
Tue night..NE wind 15 knots. Seas 7 feet, except 3 feet E side of the bay. SE swell. Rain.
Wed..E wind 15 knots. Seas 8 feet, except 3 feet E side of the bay. SE swell. Rain.
Wed night..E wind 10 knots. Seas 8 feet, except 2 feet or less E side of the bay. Showers.
Thu..E wind 10 knots. Seas 7 feet.
Fri..SE wind 10 knots. Seas 6 feet.
Sat..E wind 10 knots. Seas 3 feet.

7 Day Forecast for Marine Location Near Yakutat, AK
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location: 59.56, -139.61     debug


Area Discussion for -
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Fxak67 pajk 252305
afdajk
southeast alaska forecast discussion
national weather service juneau ak
305 pm akdt Mon sep 25 2017

Short term Tonight through Wednesday... As of 1500 this
afternoon, a ridge of high pressure has positioned itself over the
eastern gulf and the SE alaska panhandle. A broad trough
currently answers the ridge from the western gulf and alaska
mainland. This ridge helped with clearing things out for us this
morning in most areas, but it has begin to shift east today and is
now beginning to bring onshore flow back to the panhandle.

Another shortwave developing out of the parent circulation to the
west is expected to lift northeast across the gulf waters tonight.

Its associated weather front will also push northeast and begin
to impact the panhandle late tonight into early tomorrow morning.

In addition, on WV satellite imagery, we can see a very moist
subtropical jet wrapping around the main flow between the trough
and the ridge, and current precipitable water analysis shows
anomalously high pw amounts with this flow. We'll see additional
shortwaves develop out of the parent trough that will pivot this
flow of moisture over the panhandle, with southern areas being the
target tomorrow before the flow shifts to northern areas
Wednesday. This is setting up to be a substantially wet pattern
through the week.

The big story with the approaching front for tonight into
tomorrow will be the increased winds, especially along the eastern
gulf waters, and the increased pops across the panhandle. Some
areas in the inner channels may receive 25 kt sustained winds
tomorrow into Wednesday, namely areas of clarence strait,
southern chatham, and southern portions of stephens passage.

Generally, the ECMWF and GFS have had good agreement, so most
adjustments to the forecast were made using a combination of both
models. Wind speeds along the front were adjusted up using the
gfs, and pops were updated using predominantly the ec, with a
little GFS added in.

Long term Wed night through Mon still some important model
differences to work out for mid-late week system but threat for
heavy rain somewhere in the area remains on the high side. Precip
water values are running 2.5-3 standard deviations above average
in the GFS ec ensemble guidance for wed-thu. Jet axis aloft will
run N into the NE gulf coast area with speeds in the 100-110 kt
range. At this point, main forecast difficulty is where axis of
heaviest rain sets up, and this is mainly due to models handling
low pressure waves on the front differently. Ended up not making
any big changes to the forecast for Wed night-thu but did bump
winds up some over the area based on model trends.

Later in the period, looking like main cold front will cross the
area late Thu or Thu night. Did speed up transition over to
showers behind this front for Thu night and fri. Weekend looking
on the wet and cooler side with remnant of parent low moving e
across the gulf. Will need to watch for any potential systems
coming out of the southern stream into the area by late in the
weekend or early next week, but there are large model differences
on this.

Aviation Yakutat ASOS dissemination problems persist.

Alternative dial up methods attempted today with mixed results.

Taf may have to be niled when webcams lose effectiveness after
dark. Elsewhere frontal system lifting into southern panhandle
tonight will result in wind shear below 2k feet starting around
midnight. Increased inner channels winds will make for choppy
seaplane bases as well. Freezing levels will be on the rise.

Cigs vis will be lowest southern 1 3 area tue... ESP papg and
points S and W from there.

Ajk watches warnings advisories
Public... None.

Marine... Small craft advisory for pkz022-036-041>043-051-052.

Voveris rwt
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
YATA2 - 9453220- Yakutat, AK 7 mi46 min 54°F1014.3 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Yakutat, AK4 mi65 minSSW 510.00 miFair0°F0°F%1014.2 hPa

Wind History from AYA (wind in knots)
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Last 24hr----------------------------------------------SW3
1 day agoSW5W5W4SW3----------CalmCalmE3CalmE4CalmE4Calm--------------
2 days ago----------------------------------------------SW5

Tide / Current Tables for Johnstone Passage, Yakutat Bay, Alaska
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Johnstone Passage
Click for Map
Mon -- 05:01 AM AKDT     8.21 feet High Tide
Mon -- 07:11 AM AKDT     Sunrise
Mon -- 10:44 AM AKDT     2.87 feet Low Tide
Mon -- 01:35 PM AKDT     Moonrise
Mon -- 04:45 PM AKDT     9.19 feet High Tide
Mon -- 07:07 PM AKDT     Sunset
Mon -- 09:35 PM AKDT     Moonset
Mon -- 11:30 PM AKDT     1.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.42.94.76.57.88.27.86.85.343.12.93.54.86.47.98.99.28.57.25.43.62.11.3

Tide / Current Tables for Point Latouche, Yakutat Bay, Alaska
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Point Latouche
Click for Map
Mon -- 05:06 AM AKDT     8.21 feet High Tide
Mon -- 07:10 AM AKDT     Sunrise
Mon -- 10:44 AM AKDT     2.66 feet Low Tide
Mon -- 01:37 PM AKDT     Moonrise
Mon -- 04:50 PM AKDT     9.19 feet High Tide
Mon -- 07:07 PM AKDT     Sunset
Mon -- 09:33 PM AKDT     Moonset
Mon -- 11:30 PM AKDT     1.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.32.84.66.47.78.27.96.85.33.92.92.73.34.66.27.88.99.28.67.35.53.621.2

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 (20,4,5,8)
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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.