Saturday, March25, 2017 L-36.com


Marine Weather and Tides
Covenant Life, AK

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:38AMSunset 7:27PM Saturday March 25, 2017 5:40 AM AKDT (13:40 UTC) Moonrise 5:24AMMoonset 3:30PM Illumination 4% Phase: Waning Crescent; Moon at 28 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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PKZ011 Glacier Bay- 358 Am Akdt Sat Mar 25 2017
Today..NW wind 15 kt. Seas 3 ft.
Tonight..NE wind 20 kt. Gusts to 35 kt. Seas 4 ft.
Sun..N wind 20 kt. Seas 4 ft.
Sun night..N wind 20 kt. Seas 4 ft. Snow.
Mon..N wind 15 kt becoming s. Seas 3 ft.
Tue..SE wind 15 kt. Seas 3 ft.
Wed..S wind 10 kt. Seas 2 ft or less.

7 Day Forecast for Marine Location Near Covenant Life, AK
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location: 58.88, -136.57     debug


Area Discussion for -
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Fxak67 pajk 251334
afdajk
southeast alaska forecast discussion
national weather service juneau ak
534 am akdt Sat mar 25 2017

Short term Surface analysis and satellite imagery indicate a
weakening low over prince of wales island moving north, with
precip expanding northward as well. Ptype is mostly liquid over
southern areas and the outer coast with mixed precip over the
central panhandle transitioning to snow further n. Accumulating
snow will persist through the morning over the n/ctl inner
channels. Highest accumulations still expected in the juneau area
where up to 3 inches possible through mid-late morning. Precip
will then transition to showers and ptype will become mixed then
liquid. As the low moves inland this afternoon, sct showers will
gradually diminish this evening. Focus then turns to the next,
near gale, low moving N approaching the SE gulf overnight.

Nly winds over the N channels will ease this morning, turn
southerly this afternoon in response to the low moving inland
before swinging back to nly and increasing as the next low begins
to impact the region. Advisory level winds will develop over the
outer coast late this evening. Also expect sely SCA winds over
clarence strait late tonight along with N lynn and cross sound in
response to the approaching low.

Precip chances will increase over the southern panhandle overnight
and given the timing expect ptype to mixed or snow but little to
no accumulation expected overnight.

Current forecast represented this reasoning well and used hi res
guidance concentrating on local effects. Biggest challenge is
timing of the wind shift over N panhandle. Forecast confidence
remains above average.

Long term Starting Sun the effects of the next weather system
spreads into southern seak with increasing SE winds and
increasing likelihood of pcpn. Expect a 994 mb surface low to move
ne just off the coast through Mon and be west of yakutat mon
night. The zone where precip could be mixed rain and snow lifts
northward from the central panhandle Sat to icy strait corridor
sun. This shortwave should be fairly strong with widespread precip
and gale force gusts offshore through Mon night.

A wavy southwest flow aloft affects seak Tue and wed. This will
keep the chances of precip fairly high but not excessive total
precip amounts. Temps expected to nudge close to normal for late
march with daytime highs in the 40s next week and snow levels
rising. The westerly jetstream core of greater than 100 kts has
been located around 40n and aimed at pacnw but is forecast to
gradually tilt northward next week due to upper level ridging
along the CONUS west coast. Temporary ridging may build as far
north as seak by thur or Fri next week and result in a break in
the precip and feel noticeably spring like at least in ketchikan
and the adjacent southern panhandle.

Forecaster confidence fairly high regarding the general moist
pattern through mid week then drying. Made little or no change to
existing grid forecast.

Ajk watches/warnings/advisories
Public... None.

Marine... Small craft advisory for pkz012-022-036-041>043.

Bc/ta
visit us at http://

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTA2 - Bartlet Cove AK 47 mi75 min NNW 8 G 12 36°F 1000.3 hPa
CSPA2 - Cape Spencer, AK 47 mi31 min ENE 2.9 G 6 33°F 28°F
ELFA2 - 9452634 - Elfin Cove, AK 49 mi41 min 30°F 45°F1000.8 hPa (+0.9)

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from AEL (wind in knots)
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Last 24hr--N12
G28
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G25
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G20
--N10------------------------------4
1 day ago--E9--E10
G20
--E15--Calm------------------------------N12
G22
2 days ago--E8--N12--NE12--E12------------------------------Calm

Tide / Current Tables for Composite Island, Glacier Bay, Alaska
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Composite Island
Click for Map
Sat -- 12:49 AM AKDT     14.91 feet High Tide
Sat -- 06:23 AM AKDT     Moonrise
Sat -- 06:50 AM AKDT     2.72 feet Low Tide
Sat -- 06:52 AM AKDT     Sunrise
Sat -- 12:39 PM AKDT     16.26 feet High Tide
Sat -- 04:29 PM AKDT     Moonset
Sat -- 07:08 PM AKDT     -0.13 feet Low Tide
Sat -- 07:33 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
14.414.913.911.58.55.43.32.74.1710.613.815.816.214.711.77.94.11.1-0.10.73.47.311.3

Tide / Current Tables for Muir Inlet, Glacier Bay, Alaska
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Muir Inlet
Click for Map
Sat -- 12:47 AM AKDT     14.89 feet High Tide
Sat -- 06:21 AM AKDT     Moonrise
Sat -- 06:47 AM AKDT     2.48 feet Low Tide
Sat -- 06:50 AM AKDT     Sunrise
Sat -- 12:41 PM AKDT     16.03 feet High Tide
Sat -- 04:27 PM AKDT     Moonset
Sat -- 07:10 PM AKDT     -0.45 feet Low Tide
Sat -- 07:31 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
14.414.913.811.48.35.232.53.96.810.413.615.615.914.611.8841-0.40.33.17.111.2

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 (9,2,3,4)
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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.