Sunday, April22, 2018 L-36.com


Marine Weather and Tides
Kasaan, 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 6:13AMSunset 8:52PM Saturday April 21, 2018 11:56 PM PDT (06:56 UTC) Moonrise 9:52AMMoonset 1:50AM Illumination 44% Phase: First Quarter Moon; Moon at 7 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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PKZ036 Clarence Strait- 335 Pm Akdt Sat Apr 21 2018
.small craft advisory Sunday...
Tonight..SE wind 15 kt. Seas 4 ft.
Sun..SE wind 25 kt. Seas 6 ft. Rain.
Sun night..SE wind 25 kt. Seas 7 ft. Rain.
Mon..SE wind 30 kt. Seas 8 ft. Rain.
Mon night..SE wind 20 kt. Seas 6 ft. Rain.
Tue..S wind 20 kt. Seas 4 ft.
Wed..SW wind 15 kt. Seas 3 ft.
Thu..SW wind 10 kt. Seas 2 ft or less.

7 Day Forecast for Marine Location Near Kasaan, AK
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location: 55.25, -132.3     debug


Area Discussion for -
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Fxak67 pajk 212251
afdajk
southeast alaska forecast discussion
national weather service juneau ak
251 pm akdt Sat apr 21 2018

Short term Some dense areas of fog arose this early morning in
peril strait, gustavus, and hoonah, before burning off mid-
morning. Residual showers persisted throughout the afternoon (and
even some ice pellets), as yesterday's frontal system exits and
drags the precip with it. Our next system we're looking at will
make its entrance late Sunday into Monday, followed by another
quick band of frontal precip late Monday night into early Tuesday.

Temperatures at the 500 mb level are still in the mid -20c range,
which are below normal for this time of year. Temperatures Sunday
into early Monday morning won't be following a diurnal curve, as
some warmer, borderline-unstable air sneaks in. Maximum
temperatures were lowered into Monday, following rain soaked
cooling and some pockets of CAA that slip in behind the front.

Minimum temperatures were raised for tonight especially, as cloud
cover prevails for most of the short term. Temperature edits were
done through a GFS blend and some local edits using MOS guidance.

Rain showers will become more widespread throughout the panhandle
into tonight with some snow showers mixing in over the northern
panhandle. QPF will be 2-3 standard deviations above normal during
this timeframe. Pop was blended with some sref, akhireswarw, and
gfs and QPF the akhireswarw and gfs, respectively.

Pressure adjustments were made using a nam ECMWF blend to better
capture the "waves" associated with the second front. The biggest
change to the short term was increasing winds locally late Sunday
night into Monday and increasing to gales along the outer coast.

Model agreement has been doing relatively well, however, the exact
timing and details of these next waves may need further fine
tuning.

Long term Monday through Saturday as of 10 pm Friday upper
trof will move NE across the area mon-tue. Another trof will
amplify over the n-central pac into the E bering sea. Ridging will
build downstream over western canada. Models have trended toward
a stronger ridge, and this will likely have an effect on a system
moving toward the area for late Tue into early thu. Still some
important model differences to work out for this system and any
following systems later in the week. Ended up basically staying
with current forecast in long range, waiting to see if we get
better agreement especially on tue-wed system.

Occluded front will be moving slowly E across the area Mon and mon
night. Looking like most precip with this front will fall over the
nw half of the area. May have some gale force winds over the ne
gulf early Mon but front will be weakening. Weak trof should move
in behind the front tue.

Following occluded front appears to be weaker and holding up
further W in latest model runs, but models have been inconsistent
with it. Big problem seems to be how strong ridging builds over
and E of the area. If the current models maintain the stronger
ridge idea, later shifts may need to keep the front further w
along with the stronger winds and precip. After Wed night,
forecast confidence drops off even more as the model differences
only increase. Overall, looking more like the southern panhandle
will not get as much rain as previously thought, which may not
alleviate the abnormally dry conditions there.

Ajk watches warnings advisories
Public... None.

Marine... Gale warning for pkz041>043-051-052.

Small craft advisory for pkz022-033-035-036-053.

Ss rwt
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GIXA2 26 mi25 min SE 5.1 G 12 41°F 1026.4 hPa36°F
KEXA2 33 mi25 min E 9.9 G 17 42°F 1026.4 hPa37°F
SLXA2 35 mi24 min E 13 G 20 41°F 1027 hPa36°F
KECA2 - 9450460 - Ketchikan, AK 36 mi45 min SSE 8 G 11 43°F 44°F1027.1 hPa
LCNA2 - Lincoln Rock, AK 60 mi47 min SE 13 G 18 1023.5 hPa
46145 - Central Dixon Entrance Buoy 61 mi57 min SSE 9.7 G 12 45°F 45°F6 ft1026.2 hPa (+0.9)

Wind History for Ketchikan, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hydaburg - Hydaburg Seaplane Base, AK27 mi61 minno data10.00 miLight Rain43°F39°F86%1035.8 hPa

Wind History from AHY (wind in knots)
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Last 24hr------------------------------------------------
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Divide Head, Cholmondeley Sound, Alaska
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Divide Head
Click for Map
Sun -- 02:41 AM AKDT     Moonset
Sun -- 05:28 AM AKDT     Sunrise
Sun -- 05:48 AM AKDT     14.02 feet High Tide
Sun -- 11:00 AM AKDT     Moonrise
Sun -- 12:38 PM AKDT     0.46 feet Low Tide
Sun -- 01:46 PM AKDT     First Quarter
Sun -- 07:15 PM AKDT     12.12 feet High Tide
Sun -- 08:08 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.55.67.69.912.113.61413.1118.152.30.80.51.73.96.69.211.212.111.810.58.76.8

Tide / Current Tables for Lancaster Cove, Cholmondeley Sound, Alaska
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Lancaster Cove
Click for Map
Sun -- 02:40 AM AKDT     Moonset
Sun -- 05:27 AM AKDT     Sunrise
Sun -- 06:02 AM AKDT     13.94 feet High Tide
Sun -- 10:59 AM AKDT     Moonrise
Sun -- 12:49 PM AKDT     0.40 feet Low Tide
Sun -- 01:46 PM AKDT     First Quarter
Sun -- 07:27 PM AKDT     12.13 feet High Tide
Sun -- 08:07 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.45.279.311.613.313.913.311.58.75.52.70.90.41.43.46.18.810.9121210.897.1

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 (2,6,7,8)
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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.