Friday, February23, 2018 L-36.com


Marine Weather and Tides
Haines, 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 7:03AMSunset 5:18PM Friday February 23, 2018 11:38 AM AKST (20:38 UTC) Moonrise 10:22AMMoonset 2:08AM Illumination 61% Phase: Waxing Gibbous; Moon at 8 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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PKZ012 Northern Lynn Canal- 407 Am Akst Fri Feb 23 2018
.gale warning today...
Today..N wind 10 kt increasing to 35 kt. Seas building to 6 ft. Snow and rain showers early in the morning.
Tonight..N wind 30 kt. Gusts to 45 kt. Seas 6 ft. Freezing spray late.
Sat..S wind 15 kt. Seas 3 ft. Snow.
Sat night..N gale to 35 kt. Seas 7 ft. Freezing spray.
Sun..N wind 30 kt diminishing to 15 kt. Seas 6 ft subsiding to 3 ft.
Mon..N wind 10 kt. Seas 2 ft or less.
Tue..S wind 10 kt. Seas 2 ft or less.

7 Day Forecast for Marine Location Near Haines, AK
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location: 59.23, -135.43     debug


Area Discussion for -
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Fxak67 pajk 231459
afdajk
southeast alaska forecast discussion
national weather service juneau ak
559 am akst Fri feb 23 2018

Short term Friday morning through Saturday night ... As one
low exits, our focus has shifted toward a second gale force low in
the gulf on Saturday.

Showery precipitation has taken over across the central panhandle
this morning. Yakutat received 7 inches of snow over the last 24
hours and petersburg reported just over 5 inches as of early this
morning. Many locations have already changed over to rain or a
rain snow mix as pockets of warm air advection have moved in
behind the low, limiting snow accumulations to less than 1 inch at
the juneau airport. Winter storm warnings for both zones were
cancelled early as a result of the warmer than anticipated low
level air and a lack of heavy snow.

Changes to winds on the outside were confined to the Saturday
and Saturday night time period with a strong nudge towards the
06z nam. Net result was increased winds to high end gales over
the gulf. Cannot rule out storm force winds at this time.

Temperatures agreed quite well in both MOS guidance and model
spectrum spreads. Maximum temperatures over the coastal waters
were decreased for today and a slight decrease in temperatures for
most locations for Saturday. Not many changes to minimum
temperatures were made, as some clearing is expected tonight
before the next system moves in.

Pop and QPF were adjusted using the NAM and 3 hour gfs, as
agreement between these two models was relatively consistent once
again. This quickened the onset of precipitation to mid-morning
Saturday and ending late Saturday night for most of the panhandle.

Preliminary snowfall totals for Saturday are ranging from 1-2",
with the outer coast likely to see rain. This will shift us into
more of a showery regime, with CAPE values approaching 400-500
j kg. A possibility of lightning along the coast cannot be ruled
out completely.

Confidence remains about average. The general pattern has not
changed significantly overall, but it is the small scale
variations in these patterns that have limited the predictability
of these systems.

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

Small craft advisory for pkz013-032>036.

Small craft advisory due to seas for pkz022-053.

Ss fritsch voveris
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HAXA2 1 mi37 min WSW 8 G 17 35°F 1005.3 hPa23°F
SKTA2 - 9452400 - Skagway, AK 16 mi63 min 34°F 37°F1006.3 hPa
SKXA2 16 mi37 min ESE 1.9 G 4.1 35°F 1006.7 hPa27°F
ERXA2 21 mi37 min NE 40 G 46 32°F 1003.2 hPa22°F
EROA2 - Eldred Rock, AK 21 mi75 min NNE 32 G 37 37°F 1001.6 hPa28°F
BLTA2 - Bartlet Cove AK 59 mi73 min WSW 2.9 G 8 37°F

Wind History for Juneau, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Haines - Haines Airport, AK5 mi45 minWNW 710.00 miFair35°F27°F72%1006.6 hPa
Skagway, AK18 mi46 minN 05.00 miFog/Mist33°F30°F92%1006.8 hPa

Wind History from AHN (wind in knots)
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Last 24hrW65E9E9
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NW8NW11NW9NW9NW8NW9NW12NW10NW11NW11NW10NW7
1 day agoCalmCalmCalmE3E3CalmCalmCalmCalmNW3NW3CalmCalmCalmCalmCalmW6W8W5NW6W7W5NW3W6
2 days agoCalmW5CalmW3W8NW5W6CalmNW3NW7NW4NW6NW9NW10--NW4W9W5W8E5CalmCalmCalmCalm

Tide / Current Tables for Haines Inlet, Lynn Canal, Alaska
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Haines Inlet
Click for Map
Fri -- 02:08 AM AKST     Moonset
Fri -- 05:49 AM AKST     15.83 feet High Tide
Fri -- 07:14 AM AKST     Sunrise
Fri -- 10:22 AM AKST     Moonrise
Fri -- 12:38 PM AKST     2.23 feet Low Tide
Fri -- 05:16 PM AKST     Sunset
Fri -- 06:57 PM AKST     12.37 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.35.78.111.113.715.415.814.912.9106.84.12.52.33.65.88.310.511.912.411.910.58.76.8

Tide / Current Tables for Cove Point, Berner's Bay, Lynn Canal, Alaska
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Cove Point
Click for Map
Fri -- 02:04 AM AKST     Moonset
Fri -- 05:56 AM AKST     15.33 feet High Tide
Fri -- 07:11 AM AKST     Sunrise
Fri -- 10:23 AM AKST     Moonrise
Fri -- 12:44 PM AKST     2.27 feet Low Tide
Fri -- 05:15 PM AKST     Sunset
Fri -- 07:04 PM AKST     11.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.35.57.710.513.114.815.314.612.810.174.32.72.33.45.47.89.911.411.911.510.38.76.9

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 (15,3,4,5)
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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.