Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Yakutat, AK

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:05AMSunset 9:50PM Wednesday April 25, 2018 11:00 AM PDT (18:00 UTC) Moonrise 2:15PMMoonset 4:03AM Illumination 79% 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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PKZ053 Yakutat Bay- 354 Am Akdt Wed Apr 25 2018
.small craft advisory due to seas through this evening...
Today..E wind 15 kt becoming sw. Seas 9 ft. S swell. Rain early in the morning.
Tonight..Light winds. Seas 8 ft. S swell.
Thu..NW wind 10 kt. Seas 6 ft. S swell.
Thu night..NW wind 10 kt. Seas 7 ft. S swell.
Fri..W wind 10 kt. Seas 5 ft.
Sat..SE wind 10 kt becoming light. Seas 4 ft.
Sun..E wind 15 kt. Seas 6 ft.

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 251335
afdajk
southeast alaska forecast discussion
national weather service juneau ak
535 am akdt Wed apr 25 2018

Short term As of 430 am Wednesday, a pattern change will occur
over the next 48 hours. A weather front continues to track
eastward across the northeast gulf coast this morning. This front
will dissipate as it pushes east through Thursday morning.

Precipitation associated with the front will spread over the
majority of the northern panhandle today (north for fredrick
sound)
tomorrow will follow a drying trend over the northern panhandle
(with the southern panhandle remaining dry) as the front
dissipates and high pressure builds over gulf and panhandle.

Additionally the winds will diminish significantly as the surface
pressure gradient over the panhandle minimizes.

Some adjustments were made to the inherited short term forecast.

Winds were diminished as whole, especially, late tonight and
tomorrow as high pressure builds over the eastern gulf and
panhandle. These winds may need to be adjust downward more to
allow more light winds to be present over the inner channels this
evening and tomorrow. Slight temperature adjustments were made to
increase lows where more cloud cover is present overnight and
decrease lows where less cloud cover is expected. Primary guidance
was a blend of 00z canadian and 06 gfs. Forecast confidence
remains above average in the short term.

Long term Friday through Wednesday ... A large surface high
will be centered south of the aleutians at the start of this long
range forecast period. Prominent ridge axis extends northeast
diagonally across the gulf. Farther north, a low near the bering
strait will be pushing a front east across the southern portion of
the state and along the northern periphery of the surface ridge.

Models are currently in significantly better agreement with this
set-up and changes were made in the extended forecast to reflect
this. Main change has been to increase the likelihood of rain from
Friday onward. The front referenced above will not make much
eastward progress beyond CAPE fairweather. However, a second
frontal feature will cross the central gulf beginning Saturday and
arrive along the central southern outer coast by Sunday morning.

A third front will cross the gulf on Sunday and spread rain across
all of the panhandle Sunday night.

With the increases to pop and based on model spectrum spreads,
decided to diminish daytime highs slightly. Overnight lows were
adjusted up even less. Net effect will be a diminished diurnal
range over the coming week.

Blended gfs, ecmwf, and the canadian nh for pressure through
Sunday night. Used canadian nh winds as a foundation through
Friday night, then primarily gfs. Preferred the SREF pop field
early on, but then favored the upper level pattern depicted in gfs
for the second and third fronts and how they interact with the
surface ridge.

Forecast confidence in a continued wet pattern for the upcoming
week remains lower than average but is increasing.

Aviation The worst conditions associated with the weather front
over the northern panhandle have passed as a whole; however,
marginal vrf conditions are still expected this morning over
portions of the northern panhandle. Gusty winds remain near
northern lynn canal this morning; they will diminish through the
afternoon hours.

Rgb satellite imagery this morning has been able to identify fog
over the southern panhandle with klawock currently being impacted.

Fog is expected to diminish quickly after sunrise leading to
favorable flight conditions by late morning south of fredrick
sound. As the front dissipates and the high builds fog will be a
possibility once again over the southern panhandle during the
late evening hours through Thursday morning.

Marine Winds over the next 24 hours will diminish significantly
over the gulf and inner channels as a surface ridge of high
pressure builds over the gulf and panhandle. Between late tonight
and tomorrow expect many of the inner channels winds to become
light and variable as the pressure gradient minimizes.

Ajk watches warnings advisories
Public... Strong wind until 4 pm akdt this afternoon for akz018.

Marine... Small craft advisory for pkz012-013-043-051.

Small craft advisory due to seas for pkz041-042-052-053.

Jb fritsch
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
YATA2 - 9453220- Yakutat, AK 7 mi43 min 43°F1023.6 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Yakutat, AK4 mi68 minWSW 47.00 miOvercast44°F39°F85%1023.3 hPa

Wind History from AYA (wind in knots)
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Last 24hrE3SE7S8S8S8S8SE5SE8
G15
SE9SE10
G17
SE11
G17
SE13
G19
E10E9SE11
G16
SE11
G18
SE13
G18
SE11
G19
SE9
G20
SE10
G16
SW12
G18
CalmW4SW6
1 day agoSE11
G23
SE14
G23
SE9
G19
SE12
G20
SE9
G21
S5S7SE5SE4E4E7E7E5E5E5E5NE6E6E7E7E7E8E8E6
2 days agoE11E9E13
G21
E14
G21
E10
G21
E14
G19
E14E16
G23
E14
G21
E13E14
G21
E11E11E14
G22
E14
G21
E13E11E11
G17
E13
G19
SE17
G28
SE16
G28
SE19
G36
SE15
G25
SE16
G26

Tide / Current Tables for Johnstone Passage, Yakutat Bay, Alaska
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Johnstone Passage
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Wed -- 04:26 AM AKDT     2.67 feet Low Tide
Wed -- 05:02 AM AKDT     Moonset
Wed -- 05:34 AM AKDT     Sunrise
Wed -- 10:15 AM AKDT     8.45 feet High Tide
Wed -- 03:16 PM AKDT     Moonrise
Wed -- 04:46 PM AKDT     0.38 feet Low Tide
Wed -- 09:00 PM AKDT     Sunset
Wed -- 11:15 PM AKDT     9.25 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.66.24.73.42.72.83.656.57.88.48.27.25.53.61.80.70.41.12.74.86.98.59.2

Tide / Current Tables for Point Latouche, Yakutat Bay, Alaska
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Point Latouche
Click for Map
Wed -- 04:26 AM AKDT     2.47 feet Low Tide
Wed -- 05:03 AM AKDT     Moonset
Wed -- 05:32 AM AKDT     Sunrise
Wed -- 10:20 AM AKDT     8.45 feet High Tide
Wed -- 03:15 PM AKDT     Moonrise
Wed -- 04:46 PM AKDT     0.35 feet Low Tide
Wed -- 09:01 PM AKDT     Sunset
Wed -- 11:20 PM AKDT     9.25 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.76.24.73.32.62.63.44.86.47.78.48.37.25.63.61.80.60.41.12.64.76.78.49.2

Weather Map and Satellite Images
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wmap_P
GOES 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.
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Wind Forecast for (14,3,4,5)
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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 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.