Tuesday, November13, 2018 L-36.com


Marine Weather and Tides
Prudhoe Bay, AK

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 9:16AMSunset 3:53PM Monday November 12, 2018 10:39 PM AKST (07:39 UTC) Moonrise 12:00AMMoonset 12:00AM Illumination 27% Phase: Waxing Crescent; Moon at 5 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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PKZ240 Cape Halkett To Flaxman Island- 247 Pm Akst Mon Nov 12 2018
Tonight..NE winds 10 kt. Freezing fog.
Tue..E winds 10 kt. Freezing fog.
Tue night..SW winds 10 kt.
Wed..SW winds 20 kt.
Wed night..SW winds 20 kt.
Thu..SW winds 15 kt.
Thu night..SW winds 10 kt.
Fri..NE winds 15 kt.
Sat..E winds 20 kt.
PKZ200 Norton Sound- 247 Pm Akst Mon Nov 12 2018
.gale warning in effect through Tuesday afternoon...
.heavy freezing spray warning in effect through Tuesday afternoon...
Tonight..NE winds 35 kt. Seas 8 ft. Freezing fog. Heavy freezing spray.
Tue..NE winds 35 kt. Seas 8 ft. Freezing fog. Heavy freezing spray.
Tue night..NE winds 30 kt. Seas 8 ft. Freezing fog. Heavy freezing spray.
Wed..NE winds 30 kt. Seas 7 ft. Heavy freezing spray.
Wed night..NE winds 25 kt. Seas 6 ft. Heavy freezing spray.
Thu..NE winds 20 kt. Seas 5 ft. Freezing spray.
Thu night..E winds 20 kt. Seas 5 ft. Freezing spray.
Fri..NE winds 20 kt. Seas 5 ft.
Sat..NE winds 25 kt. Seas 5 ft.


7 Day Forecast for Marine Location Near Prudhoe Bay, AK
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location: 70.46, -149.44     debug


Area Discussion for -
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Fxak69 pafg 122344
afdafg
northern alaska forecast discussion
national weather service fairbanks ak
244 pm akst Mon nov 12 2018

Discussion
Active weather pattern continues for northern alaska with snow,
blowing snow and freezing rain through much of the interior and
strong winds along the west coast, bering strait and st lawrence
island.

Aloft at 500 mb a strong upper level ridge remains steadfast over
the west coast of north america from california northward to the
yukon while a strong long wave trough over the eastern bering sea
and western alaska and the northwest gulf of alaska slowly pushes
east into the ridge slowly eroding the northern portion of the
ridge with each shortwave moving north out of the northern
pacific into Wednesday. The ridge then builds back west over the
yukon and eastern alaska later in the week. An upper level ridge
continues to dominate over siberia and will build northeast over
the north slope of alaska into Wednesday.

A series of short wave troughs rotating through the long wave
trough are interacting with a subtropical feed of moisture
extending from near hawaii to the gulf of alaska, and causing a
series of strong surface lows to form in the southern gulf of
alaska and rotate north over western alaska. Each low is cutting
into and eroding the long wave ridge, with the ridge breaking
down Tue and Wed and allowing the now weakened long wave trough to
move over mainland alaska by wed. The long wave trough moves east
thu as a long wave ridge builds back over the eastern pacific and
mainland ak late in the week. This translates to a warm and windy
pattern with periods of snow and freezing rain for the interior
through mid week with a slight cool down to near normal by the end
of the week. The west coast will remain windy through Wednesday
as well as remaining warmer than normal through the rest of the
week. The north slope will remain warmer than normal for the rest
of the week.

On the surface, the first low in a series of lows is currently
located 150 nm south of dutch harbor and will weaken as it moves
southeast into the western gulf of alaska tonight. A second low
currently around 978 mb low and located 100 nm south of kodiak
island will continue to deepen to 976 mb as it moves northwest
into bristol bay Tuesday as a 1036 mb high pressures builds over
the north slope. A front rotating northwest around the second low
will bring another round of snow and a chance of freezing rain to
much of the interior tonight and Tuesday. The next low in the
series moves north into the northeastern gulf of alaska as a 994
mb low on Wednesday however a weak ridge is expected to build
aloft over south central and southwest alaska as well as the
southern interior and will help diminish the snow over the
interior late Wednesday.

Ongoing high wind warning will be allowed to continue as winds
continue to to be strong and will once again push warning level
criteria tonight as the low in the gulf of alaska pushes northwest
and tightens the gradient between the low and the high pressure
center over siberia, the southern chukchi sea and the north slope.

A brief lull in the snow and freezing rain this afternoon over the
interior before more snow and freezing rain moves into the area
this evening in the southeast interior and tonight for the central
and western interior. Ongoing winter weather advisories will
continue to cover incoming weather with another 2 to 3 inches
expected around fairbanks through tomorrow and heavier amounts
expected in the higher terrain north of fairbanks through
tomorrow.

Models, the 12z model suite initialized better today as far as
pressure levels on synoptic scale features and their positions
than they did yesterday. Model spread in the short range is
minimal and is reasonable through mid week. Model spread
increases significantly by the end of the week.

Coastal hazard potential days 3 and 4... None.

Afg watches warnings advisories
High surf advisory for akz213.

High wind warning for akz213.

Winter weather advisory for akz214-akz215-akz216-akz217-akz219-
akz220-akz221-akz222-akz224-akz225-akz226-akz227.

Heavy freezing spray warning for pkz200-pkz210-pkz215-pkz220-
pkz225-pkz230.

Gale warning for pkz200-pkz210-pkz220.

Small craft advisory for pkz215-pkz225.

Ccc nov 18


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRDA2 - 9497645 - Prudhoe Bay, AK 49 mi39 min E 17 G 19 5°F 1031.7 hPa (-0.3)

Wind History for Prudhoe Bay, AK
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G25

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kuparuk, Ugnu-Kuparuk Airport, AK13 mi3.9 hrsENE 1410.00 miOvercast5°F1°F85%1033.2 hPa

Wind History from AKU (wind in knots)
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Last 24hr----------------E15NE14NE14NE15NE13NE13NE15NE13NE13NE10NE9NE8NE12NE10NE14NE14
1 day ago----------------E19E18E23E20--E15E15E17E17E13E15E16NE14NE14NE17NE17
2 days ago----------------Calm333E9E7E9E9E9E11NE10E8E9E9E11E10

Tide / Current Tables for Cross Island (Dinkum Sands), Alaska
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for
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Weather Map and Satellite Images
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wmap_P
GOES Local Image of Alaska    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
Ground Weather Radar Station Pedro Dome, 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.