Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Coffman Cove, AK

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.

Sunrise 4:08AMSunset 9:40PM Thursday May 24, 2018 5:38 PM AKDT (01:38 UTC) Moonrise 3:21PMMoonset 3:15AM Illumination 77% Phase: Waxing Gibbous; Moon at 10 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
PKZ035 Sumner Strait- 241 Pm Akdt Thu May 24 2018
Tonight..S wind 15 kt. Seas building to 3 ft. Rain.
Fri..SE wind 20 kt becoming sw in the afternoon. Gusts to 35 kt in the morning. Seas 4 ft. Rain.
Fri night..S wind 15 kt. Seas 3 ft. Rain late.
Sat..E wind 30 kt. Gusts to 45 kt, except 35 kt out of interior passes. Seas 6 ft. Rain.
Sat night..SE wind 25 kt. Gusts to 40 kt, except 35 kt out of interior passes. Seas 5 ft. Rain.
Sun..S wind 15 kt becoming w. Seas 3 ft.
Mon..SW wind 10 kt. Seas 3 ft.
Tue..E wind 10 kt becoming w. Seas 2 ft or less.

7 Day Forecast for Marine Location Near Coffman Cove, AK
   Hourly   EDIT   Help
location: 56.02, -132.92     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxak67 pajk 242247
afdajk
southeast alaska forecast discussion
national weather service juneau ak
247 pm akdt Thu may 24 2018

Short term Raise your hands if you like august weather in may!
as we read most of your minds, that is what we thought.

Broad but weak ridging over southeast alaska has resulted in a
"dirty" break of sorts between systems. However, like clockwork,
breaks in the clouds have resulted in surface warming that has
incited a little more shower activity this afternoon than what we
experienced this morning. Meanwhile, greater ridging heights has
suppressed clouds in the far southern inner channels. Peering
oceanside from the coast, we spy a front emerging from the south.

This front will support increasing lift this evening as off and on
showers and then rain overspreads much of the panhandle. With
this system, we expect breezes to increase Friday. The Friday
front will no doubt "wet" southeast alaskans appetites for the
main course of fall weather beginning Saturday and more and more
likely increasing through the holiday weekend. Note with most
areas getting around a half inch of rain, this looks to be the
"dry day of the weekend." most winds have been on the lighter side
today, but convective mixing and a pre-frontal ridge has sustained
stronger winds than expected through juneau and lynn canal. But
these winds should weaken as the front approaches shore tonight.

Saturday, as noted above, a gale force front with a deep fetch of
moisture moves into our gulf waters from the south. Southeast and
easterly winds will rise across the panhandle at first from the
south and then moving northward through the day. With it, the
coast from prince of wales island up to chichagof should receive
an inch of rain Saturday and Saturday night. But more exposed ketchikan
could receive up to 2 inches. While this looks to present no hydro
concerns, we do think it could challenge the enjoyment of some
outdoor holiday weekend activities, especially with the added
bonus of stiff southeast winds. Gusts on prince of wales island
looks to be quite strong for this time of year: around 45 mph.

Boaters in the inner channels on Saturday should be wary with
increasing winds and seas with the greatest concerns in the
southern and central inner channels. Reacting to the approaching
front to the south, northern inner channels may actually see a
light turn to the north and conditions here should be a little
more benign.

Overall, we used mainly GFS for any changes through Saturday
morning, but going into Saturday night, models still are quite
argumentative on the low's future dance moves in the gulf. But
anyway way you sort it, it looks wet through the weekend.

Long term Sunday through Thursday as of 10 pm Wednesday the
ecmwf is running a bit fast and strong with the low that moves in
this weekend, nudged the forecast using nam GFS and canadian where
needed.

With a low likely in the eastern gulf, Sunday into Monday looks to
be wet across most of the panhandle and a special weather
statement will be reissued for recreational activities and travel
into the holiday weekend. But all hope is not lost, there is
potential for a break from the active fall-type weather after the
low pushes onshore early next week.

Winds will be 20 kt or less over the gulf by late Sunday night
and 15 kt or less over the panhandle and inside waters. By Tuesday
winds should be 15 kt or less through Thursday.

The low will move into the central gulf Sunday evening. Overnight
the low will move near the fairweather grounds, quickly filling
Monday night before dropping southeast and becoming a trof by
Tuesday morning. A ridge of high pressure will build over the
panhandle Tuesday through Thursday.

Lowered temperatures again for Sunday a couple of degrees.

Temperatures are still expected to remain in the mid to upper 50s
during the day and range into the 40s overnight. With less clouds
possible with the building ridge, temperatures rise a few degrees
through mid week.

Ajk watches warnings advisories
Public... None.

Marine... Small craft advisory for pkz036-041>043-051-052.

Jwa kv
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
LCNA2 - Lincoln Rock, AK 12 mi89 min SE 9.9 G 17 53°F 1015.1 hPa41°F
KECA2 - 9450460 - Ketchikan, AK 84 mi63 min SE 5.1 G 9.9 51°F 53°F1018.2 hPa

Wind History for Ketchikan, AK
(wind in knots)    EDIT      (on/off)   Help
6
PM
7
PM
8
PM
9
PM
10
PM
-12
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last
24hr
SE2
E3
SE5
SE7
SE6
NW2
NE3
N2
G5
N5
NW2
G6
NW4
--
E2
SE4
SE5
SE7
SE8
SE9
SE9
G14
SE8
G13
SE8
G13
S9
G13
E3
G7
1 day
ago
--
--
W4
NW3
NW1
--
--
W1
NW2
NW4
NW5
NW5
NW5
W8
NW9
NW9
W9
NW9
NW9
NW4
SE1
SE5
G8
E4
SE2
2 days
ago
SE11
G15
SE10
G14
SE11
G18
SE11
G16
SE11
G15
SE11
G17
SE11
SE15
G21
SE12
G16
SE10
G15
SE11
G19
SE14
G18
SE8
SE8
G11
SE4
G7
SE4
E2
G6
SE5
SE3
SE3
S3
SE2
SE2
--

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Klawock - Klawock Airport, AK33 mi46 minSW 810.00 miLight Rain52°F41°F66%1016.3 hPa

Wind History from AKW (wind in knots)
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last 24hr4333CalmW3CalmCalmCalmCalm--CalmNE4CalmW33S5CalmSW106SE5S10S6SW8
1 day agoCalmSW5--CalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmSW63S53SW6SW9SW6S6SW54
2 days agoSE93SE43CalmS3S6S6SW7S4SE6SE10S8S5S6S7SE5S73CalmSW5SW3CalmCalm

Tide / Current Tables for Lake Bay, Alaska
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Lake Bay
Click for Map
Thu -- 03:14 AM AKDT     Moonset
Thu -- 03:38 AM AKDT     2.53 feet Low Tide
Thu -- 04:23 AM AKDT     Sunrise
Thu -- 09:52 AM AKDT     13.31 feet High Tide
Thu -- 03:20 PM AKDT     Moonrise
Thu -- 03:48 PM AKDT     1.22 feet Low Tide
Thu -- 09:14 PM AKDT     Sunset
Thu -- 10:24 PM AKDT     15.43 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.37.24.52.82.63.75.98.51112.813.312.3106.93.91.81.22.34.77.911.213.915.315.1

Tide / Current Tables for Exchange Cove, Alaska
   EDIT      (on/off)   Help   One Week of Data
Exchange Cove
Click for Map
Thu -- 03:15 AM AKDT     Moonset
Thu -- 03:41 AM AKDT     2.53 feet Low Tide
Thu -- 04:22 AM AKDT     Sunrise
Thu -- 09:51 AM AKDT     12.41 feet High Tide
Thu -- 03:21 PM AKDT     Moonrise
Thu -- 03:51 PM AKDT     1.22 feet Low Tide
Thu -- 09:16 PM AKDT     Sunset
Thu -- 10:23 PM AKDT     14.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.86.94.42.92.63.65.6810.311.912.411.59.36.53.71.81.22.24.47.510.613.114.414.2

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

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (21,6,7,8)
      (on/off)   Help

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

Ad by Google

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.