Sunday, December17, 2017 L-36.com


Marine Weather and Tides
Prudhoe Bay, 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 10:50AMSunset 2:44PM Sunday December 17, 2017 4:41 AM AKST (13:41 UTC) Moonrise 11:51AMMoonset 1:20PM Illumination 1% Phase: Waning Crescent; Moon at 29 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- 406 Am Akst Sun Dec 17 2017
Today..NE winds 20 kt. Blowing snow.
Tonight..NE winds 15 kt.
Mon..E winds 10 kt.
Mon night..E winds 20 kt.
Tue..E winds 25 kt. Blowing snow.
Tue night..SE winds 20 kt.
Wed..SW winds 20 kt.
Thu..SW winds 15 kt.
PKZ200 Norton Sound- 414 Am Akst Sun Dec 17 2017
Today..W winds 20 kt.
Tonight..W winds 15 kt.
Mon..SE winds 35 kt. Blowing snow. Vsby 1 nm or less.
Mon night..SE winds 40 kt. Blowing snow. Snow. Vsby 1 nm or less.
Tue..S winds 25 kt.
Tue night..S winds 30 kt.
Wed..S winds 20 kt.
Thu..E winds 20 kt.

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 171314
afdafg
northern alaska forecast discussion
national weather service fairbanks ak
414 am akst Sun dec 17 2017

Discussion
Models... There continues to be good run to run continuity.

Solutions remain similar in the short tern and there is better
agreement out to around 72 hours. Current solutions initialized
well against the 17 06z surface analysis. Will go with the sref
for precipitation for the short term.

Aloft... The 505 dam low that was over nunivak island yesterday is
now in the northern gulf of alaska at 515 dam, and a 512 dam low
has developed over the upper kuskokwim river valley. The trough
will move slowly east to be over the alcan border late this
evening as it weakens. Ridging lies over 170w this morning and
will move over the west coast tonight. It will continue east with
the axis lying from seward to nenana to wainwright Monday evening,
then over the alcan border and extending northwest across the
arctic by Tuesday afternoon. A 492 dam low is moving into the
western bering sea this morning and to the northwestern gulf of
anadyr by Tuesday morning at 490 dam. A strong shortwave
associated with the low will move to the dateline by Monday
morning, the eastern bering sea Monday afternoon, and over the
west coast Monday night. The shortwave will continue to move
northeast across the state with southwest flow developing over
most of mainland alaska Tuesday. At 850 hpa... Cooling trend
continues today with temperatures falling to around -10 over the
forecast area. Low moving through the bering sea will produce a
weak warming trend south of the bering strait and west of mcgrath
Monday, with warmer air pushing north and east as through Tuesday.

Surface... High pressure remains over the arctic as it extends
southeast from a 1032 mb high near 78n 165e to south of banks
island and will persist into Monday before it is pushed just
offshore by the approaching low pressure system and troughing
develops over the arctic coast. A broad area of low pressure will
remain over most of the state. A 978 mb low pressure system that
was near nunivak island is now just east of kodiak city and will
move east across the gulf of alaska. A 996 mb low near kotzebue
sound will weaken and either dissipate or merge with the
approaching system in the chukchi sea. Several minor lows are
floating around the interior. Weak ridging south of the bering
strait will move over the southwest mainland tonight, then pulls
south into the gulf. A bubble high will develop over the upper
yukon flats tonight and dissipate Monday evening. A 960 mb low
is moving into the western bering sea this morning with a front
moving to the central bering sea and central aleutians this
evening. The low will slowly move east in the northern bering sea
and the front will move to st lawrence island Monday afternoon,
and to the west coast by Monday evening. The front will bring
some warmer air with it and could produce freezing rain in the
lower yukon delta and on st lawrence island Monday.

Arctic coast and brooks range... Cloudy, occasional light snow or
flurries, fog, blowing snow. The persistent northeast and east
winds of 20 to 30 mph will be diminishing today to 10 to 20 mph.

Expect improving conditions as the winds diminish. Temperatures
will continue to slowly cool.

West coast and western interior... Cloudy conditions will continue
today with a few breaks during the day. A few flurries through the
day or a period of snow. Conditions will improve a bit before the
next system arrives tomorrow. Zones 207, 209, and 213 will
require blizzard warnings, with winter storm warnings for zones
208, 211, 212, 214, 215, 216, and 217. Snowfall amounts will
range up to 20 inches with the heaviest amounts in the upper
kobuk, upper noatak, nulato hills, and bendeleben mountains. Heavy
snow will move to st lawrence island around midnight, and move to
the west coast by morning. Strong southeast to south winds will
arrive with the snow or shortly after with winds 30 to 40 mph
gusting to 65 mph on st lawrence island and the bering strait
coast. The strong winds will move to the coast with near blizzard
conditions developing in some areas and blizzard conditions
developing in kotzebue sound. As the front moves inland there is a
chance of freezing rain in the lower yukon delta and on st
lawrence island.

Central and eastern interior... Mostly cloudy with light snow and
flurries today. Some patchy fog this morning. Snow accumulations
less than 2 inches. Light winds. Temperatures slightly cooler.

Coastal hazard potential days 3 and 4... A low moving northeast
into the gulf of anadyr Wednesday night and Thursday will produce
strong south winds to st lawrence island and the bering strait and
may help break up the ice pack.

Extended forecast for days 4 to 7... Ridging setting up over the
southeast panhandle and southeast interior will pull some slightly
warmer air north over the forecast area.

Afg watches warnings advisories
Winter storm warning for akz208-akz210-akz211-akz212-akz214-
akz215-akz216-akz217.

Blizzard warning for akz207-akz209-akz213.

Heavy freezing spray warning for pkz210-pkz220.

Small craft advisory for pkz220.

Gale warning for pkz210.

Brisk wind advisory for pkz225-pkz230.

Sdb dec 17


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRDA2 - 9497645 - Prudhoe Bay, AK 49 mi41 min E 29 G 33 -4°F 29°F1007.5 hPa (+1.7)

Wind History for Prudhoe Bay, AK
(wind in knots)    EDIT      (on/off)   Help
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E37
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NE36
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NE35
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E30
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E30
E32
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E23
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E23
G28
E25
E23
E26
E27
E25
E28
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E30
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NE28
E26
NE29
NE31
NE30
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ago
E43
E42
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E35
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E32
E31
E31
E30
E27
E27
NE24
NE23
E24
E23
NE23
E22
NE21
NE24
NE20
E24
E24
E24

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kuparuk, Ugnu-Kuparuk Airport, AK13 mi56 minENE 202.00 miLight Snow Blowing Snow Fog/Mist and Breezy-6°F-9°F84%1008.1 hPa

Wind History from AKU (wind in knots)
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Last 24hrNE27
G33
NE28
G34
NE27
G32
NE24
G31
NE24
G32
NE26
G31
NE22
G29
NE29
G35
NE26
G31
NE24
G31
NE26
G29
NE23
G28
NE25
G29
NE24
G29
NE21
G28
----------------NE20
1 day agoNE17E17E18E16E16NE17E18NE19NE17NE17NE16NE17NE17NE17NE19----------------NE21
G30
2 days agoE33
G38
E34
G38
--E29
G32
E28
G31
E25
G31
E24
G29
E21
G27
E24
G27
E19E17E18NE19NE16NE16----------------NE15

Tide / Current Tables for Cross Island (Dinkum Sands), Alaska
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Cross Island (Dinkum Sands)
Click for MapNote: NOS uses UTC-10 for LST; AKST (since 1983) is UTC-9

Sun -- 01:26 AM AKST     0.68 feet High Tide
Sun -- 07:55 AM AKST     0.09 feet Low Tide
Sun -- 11:40 AM AKST     Moonrise
Sun -- 01:16 PM AKST     Moonset
Sun -- 01:19 PM AKST     0.44 feet High Tide
Sun -- 07:13 PM AKST     -0.02 feet Low Tide
Sun -- 09:31 PM AKST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.70.70.60.50.30.20.10.10.10.20.30.40.40.40.40.20.10-0-00.10.20.4

Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
npac_satellite

GOES Local Image of Alaska    EDIT
Geos

Ground Weather Radar Station Pedro Dome, 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.