Saturday, February24, 2018 L-36.com


Marine Weather and Tides
Edna Bay, 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 7:00AMSunset 5:20PM Saturday February 24, 2018 1:21 AM AKST (10:21 UTC) Moonrise 12:15PMMoonset 3:58AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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- 927 Pm Akst Fri Feb 23 2018 Updated
.small craft advisory Saturday...
Rest of tonight..NW wind 15 kt becoming ne late. Seas 3 ft, except 8 ft near ocean entrances. Patchy fog.
Sat..SE wind 25 kt. Seas 5 ft, except 8 ft near ocean entrances. Snow. Rain in the afternoon.
Sat night..W wind 25 kt. Seas 6 ft, except 12 ft near ocean entrances. Rain and snow showers in the evening, then rain showers late.
Sun..W wind 10 kt. Seas 2 ft or less, except 11 ft near ocean entrances.
Sun night..Light winds. Seas 2 ft or less, except 7 ft near ocean entrances.
Mon..Light winds. Seas 2 ft or less.
Tue..Light winds. Seas 2 ft or less.
Wed..Light winds. Seas 2 ft or less.

7 Day Forecast for Marine Location Near Edna Bay, AK
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location: 55.68, -133.58     debug


Area Discussion for -
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Fxak67 pajk 232351
afdajk
southeast alaska forecast discussion
national weather service juneau ak
251 pm akst Fri feb 23 2018

Short term through Saturday night a weakening low will move
se out of the southern panhandle tonight. High pressure will build
over the yukon tonight, then shift E sat. A developing low will
move E into the NW gulf late tonight, then move across the
northern gulf sat. The low should turn SE and move into the
southern panhandle Sat night. The associated occluded front will
move to the eastern gulf by early Sat morning, then swing across
se ak Sat afternoon and evening. Generally preferred the 12z
gfs canadian handling of the second low, with the 12z NAM just a
little further N with the track. The 18z NAM shifted the low track
slightly southward and is very close to preferred consensus.

Main forecast concerns will be precip potential ptype amounts and
winds. Rain and snow showers with the low currently over the
southern area will move out tonight. Not expecting much in the way
of snowfall from these showers as low level temps will be above
freezing during most of this precip. Precip associated with the
second low and occluded front will move rapidly E across the gulf
and reach the outer coast of SE ak by around 15z sat. This precip
should reach the far eastern inner channels by 20z sat. Some
colder air will be in place ahead of the system, which will cause
precip to begin as snow pretty much all areas. Think the
central southern coast and southern inner channels will transition
to rain or a mix, except for the far eastern parts, which should
remain mainly snow. Think the highest precip amounts will occur
from the central coast SE to the southern inner channels. The ne
part of this heavier precip band will likely remain mostly snow,
and have issued a winter weather advisory for zones 21,22, and 24
from 15z Sat to 01z sun, and zone 26 from 18z Sat to 03z sun.

Expect 3-5 inches in the advisory areas. Zones 20 and 25 could
get close to advy levels but some easterly flow will tend to limit
the snowfall a bit. Went for 2-4 inches for those areas sat.

Lighter snowfall is expected over the far n. Hyder area will
likely see 3-5 inches of snow with the main frontal band sat
afternoon and evening, but this is below advy levels. Elsewhere
along the coast and southern areas, 1 to 3 inches of snow will be
possible before it mixes with or changes to rain.

Precip should transition to showers Sat evening after occluded
front moves in. Most enhanced showers will be over the southern
half of the area along and S of the low track. The low itself will
have some mild air with it so most of the showers will likely be
rain along the southern coast. Precip over the N will diminish as
low moves inland Sat night.

Will have strong northerly winds over the northern inner channels
tonight between first low moving out and high pressure building
over the yukon. Looking like gales for lynn canal with SCA level
winds possible over the central areas. These winds will decrease
rapidly late tonight and Sat morning as northerly gradient
weakens. Gale force w-nw winds will be over much of the S half of
the gulf to start tonight, then drop off gradually as flow backs
around to a more southerly direction late tonight ahead of
approaching occluded front, but after the front moves through, a
band of gale to storm force w-nw winds will move into the southern
half of the gulf sat. Could be a small area of storm force winds
on S side of the low moving through the area as second wrap of
occluded front forms sat. With the long fetch gale to storm force
winds over the central and southern gulf, seas will be very high,
with 20+ ft seas expected during much of the time through sat
night.

Otherwise, some patchy fog will develop over parts of the central
and southern areas as clouds break and winds drop off this evening.

Think this fog will dissipate late tonight though as clouds
increase again ahead of the occluded front.

Long term Sunday through Friday we'll start off the long
term on Sunday with a broad upper level trough positioned over the
panhandle and western canada and an upper level ridge building
over the western gulf. A weakening surface low associated with a
shortwave embedded within the upper level trough will continue to
traverse southeast across the panhandle, taking with it lingering
precipitation. This feature will also help to tighten the pressure
gradient between it and a weak high pressure near the border with
mainland alaska and the yukon. This setup may provide a brief
northerly outflow event, so we increased winds accordingly through
lynn canal. As the ridge of high pressure strengthens over the
gulf and pushes east Sunday night into early Monday morning, this
should help to fully clear out precipitation, albeit briefly,
before our next system moves in Monday.

Continuing with our progressive pattern trend, a shortwave with
an associated developing surface low will dig into the western
gulf Sunday night. A weather front with the low will lift across
the eastern gulf and impact the panhandle Monday continuing into
Tuesday. 700 mb model frontogenesis shows strengthening along the
front, which should help trigger the lift we need for
precipitation. Models also show significant moisture advection
ahead of the front on Monday, so we could see some substantial
precip amounts with this system. This may potentially be a tricky
system regarding precip type; model 925 mb temps show a relatively
cold air mass over the panhandle, so precip could start off as
snow and briefly transition to a rain snow mix or remain all snow.

We mainly focused on forecast updates for the early period in the
long term, which included the Sunday through Monday timeframe. We
chose a NAM gem blend, using NAM more for winds and gem for
precip elements. After this timeframe, we allowed wpc guidance to
remain and added in nbm for select elements, mainly temperatures,
which were adjusted down for later next week.

Ajk watches warnings advisories
Public... Winter weather advisory from 9 am to 6 pm akst Saturday for
akz026.

Winter weather advisory from 6 am to 4 pm akst Saturday for
akz021-022-024.

Marine... Gale warning for pkz012-041>043-051-052.

Small craft advisory for pkz013-021-022-031>036.

Small craft advisory due to seas for pkz053.

Rwt voveris
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CDXA2 37 mi29 min NNW 6 G 8.9 36°F 1013.6 hPa29°F
LCNA2 - Lincoln Rock, AK 54 mi71 min NW 14 G 16 37°F 1011.2 hPa37°F
PLXA2 - 9451054 - Port Alexander, AK 69 mi57 min NNE 1.9 G 2.9 34°F 40°F1013.5 hPa

Wind History for Port Alexander, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Klawock - Klawock Airport, AK27 mi28 minN 010.00 miMostly Cloudy31°F30°F96%1013.5 hPa

Wind History from AKW (wind in knots)
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--64--3CalmCalmCalmCalmCalmCalmCalm
1 day agoS3NE3CalmCalmNE3CalmNE4CalmCalmCalmCalmN43CalmS5SE856S8
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2 days agoCalm3CalmNW3NE3NW3CalmCalmS4S4SW3S34S4S4SW3SW4S6S5SE6S3CalmCalmE3

Tide / Current Tables for Anguilla Island, Gulf of Esquibel, Alaska
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Anguilla Island
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Sat -- 12:05 AM AKST     3.73 feet Low Tide
Sat -- 02:58 AM AKST     Moonset
Sat -- 06:27 AM AKST     10.00 feet High Tide
Sat -- 06:57 AM AKST     Sunrise
Sat -- 11:15 AM AKST     Moonrise
Sat -- 01:46 PM AKST     0.76 feet Low Tide
Sat -- 05:18 PM AKST     Sunset
Sat -- 08:19 PM AKST     7.58 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.744.96.37.89.29.99.997.55.63.6210.81.42.64.25.877.57.46.75.7

Tide / Current Tables for Port Alice, Heceta Island, Davidson Inlet, Alaska
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Port Alice
Click for Map
Sat -- 12:05 AM AKST     3.83 feet Low Tide
Sat -- 02:58 AM AKST     Moonset
Sat -- 06:25 AM AKST     10.50 feet High Tide
Sat -- 06:57 AM AKST     Sunrise
Sat -- 11:14 AM AKST     Moonrise
Sat -- 01:46 PM AKST     0.86 feet Low Tide
Sat -- 05:18 PM AKST     Sunset
Sat -- 08:17 PM AKST     8.08 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.84.15.16.68.29.610.410.49.57.95.93.92.21.10.91.52.94.66.27.587.97.16

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 (5,6,7,8)
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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.