Sunday, March18, 2018

Marine Weather and Tides
Elfin Cove, 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 6:59AMSunset 7:11PM Sunday March 18, 2018 7:12 AM AKDT (15:12 UTC) Moonrise 7:08AMMoonset 7:54PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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
    EDIT      (on/off)   Help
PKZ022 Cross Sound- 354 Am Akdt Sun Mar 18 2018
Today..Light winds becoming W 10 kt in the afternoon. Seas 5 ft. SW swell early in the morning.
Tonight..W wind 10 kt. Seas 4 ft.
Mon..SW wind 20 kt. Seas 4 ft. Rain.
Mon night..W wind 25 kt. Seas 5 ft.
Tue..W wind 20 kt becoming e. Seas 9 ft.
Wed..NE wind 25 kt. Seas 7 ft.
Thu..NE wind 30 kt. Seas 6 ft.

7 Day Forecast for Marine Location Near Elfin Cove, AK
   Hourly   EDIT   Help
location: 58.08, -136.57     debug

Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxak67 pajk 181432
southeast alaska forecast discussion
national weather service juneau ak
632 am akdt Sun mar 18 2018

Short term Sunday morning through Monday night ... A surface
ridge will build in across the gulf from the west today, resulting
in a slow backing of the winds over the gulf from northwest to
west over the next 24 hours. Farther west, a low is beginning to
develop over the central aleutians as of early this morning, and
this will be the next meaningful source of precipitation for the
panhandle. Look for precip to begin in the yakutat area late
Sunday night, then spread east and south through Monday night.

Forecast overnight lows suggesting that there will be some snow,
but primary precip type expected to be rain. Stable air and light
winds in advance of the front is also expected to produce large
areas of low clouds and drizzle before precipitation starts in

Post-frontal westerly winds over the gulf will increase to small
craft intensity by Monday afternoon and reach cross sound by
Monday evening. Post-frontal southerly pressure gradient over the
far northern inner channels will produce small craft winds over
lynn canal Monday afternoon as well. Otherwise and elsewhere,
winds 20 kt or less.

Temperatures have been above normal across southeast alaska for
the past several days. Daytime highs for Sunday and Monday
expected to be closer to normal, ranging from the upper 30s to
mid 40s. Overnight lows still a bit warmer than normal owing to
the expected cloud cover and will range from the mid 20s to upper

Previous forecast remains on track, so little in the way of
adjustment made overnight. Overall forecast confidence is average
to above average.

Long term Tuesday through Sunday ... As of 10 pm Saturday. The
long range forecast starts out with a strong upper trough low
dropping S through the area while an upper ridge builds over
western alaska. This pattern persists through late week for the
most part as the upper low stalls briefly W of haida gwaii. The
upper level pattern then appears to shift early next weekend as a
strong trough from russia destroys the western alaska ridge
establishing a broad trough over much of alaska by next weekend.

The resulting trend is toward warmer SW flow over the gulf and
panhandle by that point.

Overall changes were rather minor especially in the Tue through
thu period as current model guidance seems to be painting a
coherent picture with little difference noted between individual
models (ecmwf and wpc were the main choice for guidance). Strong
cold air advection behind the upper trough will cause outflow
winds to increase again shutting off showers across the northern
panhandle through Tue night due to combo of dry cold air intrusion
and downslope flow. Farther south, showers will persist as the
upper low lingers around haida gwaii. Temperatures should be warm
enough that most areas will see these showers as rain but some
snow could mix in during the cooler nighttime hours. Low to no
snow accumulation expected.

As for winds, northerly outflow will be increasing Tue night into
wed as a cold air mass drops into the area. Winds could reach gale
force in some areas (like lynn canal) during this time. Pressure
gradient forecasts are starting to suggest that even that might
be too weak for some areas so future forecasts may increase winds.

Surface temperatures will also be affected as 850 mb temps drop
to -8 to -10 c across much of the area through fri. Overnight
lows will have the most noticeable drop with many areas dipping
into the mid to upper 20s during this time (this is a drop of 3
to 5 degrees over the previous forecast). High temps will not cool
down as much (if at all) as the lows will, as the spring sun
should help warm temperatures up during daylight hours.

Ajk watches warnings advisories
Public... None.

Marine... Small craft advisory due to seas for pkz041-042.

Fritsch eal
visit us at http:

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CSPA2 - Cape Spencer, AK 9 mi62 min NW 4.1 G 6 37°F 1020 hPa37°F
ELFA2 - 9452634 - Elfin Cove, AK 14 mi42 min 37°F 1019.3 hPa
BLTA2 - Bartlet Cove AK 44 mi46 min ESE 1 G 2.9 32°F

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from AEL (wind in knots)
Last 24hr------------------------------Calm--Calm--Calm--Calm--Calm
1 day ago----------------------------------NW6--NW8--NW8--4
2 days ago------------------------------Calm--Calm--NW6--NW7--NW6

Tide / Current Tables for Cape Bingham, Cross Sound, Alaska
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Cape Bingham
Click for Map
Sun -- 02:16 AM AKDT     10.57 feet High Tide
Sun -- 07:13 AM AKDT     Sunrise
Sun -- 08:08 AM AKDT     Moonrise
Sun -- 08:24 AM AKDT     0.73 feet Low Tide
Sun -- 02:23 PM AKDT     10.54 feet High Tide
Sun -- 07:16 PM AKDT     Sunset
Sun -- 08:36 PM AKDT     0.11 feet Low Tide
Sun -- 08:53 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for North Inian Pass, Cross Sound, Alaska Current
   EDIT      (on/off)   Help   One Week of Data
North Inian Pass
Click for Map
Sun -- 02:06 AM AKDT     -0.00 knots Slack
Sun -- 05:21 AM AKDT     -6.34 knots Max Ebb
Sun -- 07:12 AM AKDT     Sunrise
Sun -- 08:07 AM AKDT     Moonrise
Sun -- 09:15 AM AKDT     0.01 knots Slack
Sun -- 12:00 PM AKDT     3.31 knots Max Flood
Sun -- 02:18 PM AKDT     -0.01 knots Slack
Sun -- 05:36 PM AKDT     -6.60 knots Max Ebb
Sun -- 07:15 PM AKDT     Sunset
Sun -- 08:53 PM AKDT     Moonset
Sun -- 09:26 PM AKDT     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (11,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Biorka Is., AK
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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 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 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.