Saturday, June24, 2017 L-36.com


Marine Weather and Tides
Prudhoe Bay, AK

Version 3.4
What's New / NOTES
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 2:51AMSunset 12:56AM Saturday June 24, 2017 2:24 AM AKDT (10:24 UTC) Moonrise 12:00AMMoonset 12:00AM Illumination 0% Phase: New Moon; Moon at 0 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- 312 Pm Akdt Fri Jun 23 2017
Tonight..S winds 20 kt.
Sat..SW winds 20 kt.
Sat night..SW winds 20 kt.
Sun..SW winds 20 kt.
Sun night..SW winds 10 kt.
Mon..SE winds 10 kt.
Mon night..SE winds 15 kt.
Tue..E winds 10 kt.
Wed..W winds 10 kt.
PKZ200 Norton Sound- 314 Pm Akdt Fri Jun 23 2017
Tonight..SW winds 15 kt. Seas 3 ft.
Sat..SW winds 15 kt. Seas 2 ft.
Sat night..SW winds 10 kt. Seas 2 ft.
Sun..E winds 15 kt. Seas 2 ft.
Sun night..E winds 10 kt. Seas 2 ft.
Mon..SE winds 15 kt. Seas 2 ft.
Mon night..S winds 15 kt. Seas 4 ft.
Tue..SE winds 15 kt. Seas 3 ft.
Wed..S winds 15 kt. Seas 3 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 232333
afdafg
northern alaska forecast discussion
national weather service fairbanks ak
333 pm akdt Fri jun 23 2017

Discussion
Overall, the models are in good agreement out through the weekend. The
main forecast challenges in the short term will be strong winds
along the northwest arctic coast and convection in the interior.

Aloft, at 500 mb, the current pattern has a ridge centered over
the yukon territory extending into eastern alaska with trough
situated over the western half of the state.

At the surface, a 985 mb low currently sits near 83n 178e with a
trough extending to wrangel island. A surface ridge stretches
from the chukotsk peninsula south into bristol bay. This ridge
combined with the aforementioned low will will create a tight
pressure gradient across the chukchi sea coast on Saturday. The
pressure gradient will relax on Sunday with the low moving to the
north and surface high building northward across the state. A weak
thermal trough stretches from eagle to mcgrath. The thermal
trough will move to the east on Saturday to stretch from eagle to
near denali park withe upper ridge building in out west.

North slope and brooks range: gusty winds are expected to develop
tonight along the chukchi sea coast. The strongest winds will
likely stay offshore; however, wind gusts up to around 50 mph are
possible near point lay on Saturday. With the strong winds
elevated surf is expected to develop tonight along the chukchi sea
coast and will continue into Sunday morning. The strong winds may
cause previously shorefast ice to break off causing the ice to
quickly move to the northeast. At this point the ice movement does
not look to cause any major issues to land; however it is not out
of the question that some ice could move up on shore . Elsewhere
along the actic coast, some isolated showers and thunderstorms east
of barrow this evening. A weather front with bring showers to
areas from barrow west Sunday evening.

Central and eastern interior: isolated thunderstorms along the
thermal trough today and Saturday. This evening the isolated
thunderstorms will generally be limited to areas south and east
of a line from chalkyitsik to circle to fairbanks to mcgrath with
scattered thunderstorms east chicken. Some of the thunderstorms
tonight may produce small hail, brief gusty winds and heavy
downpours. On Saturday isolated thunderstorms will be limited to
areas south and east of a line from circle to fairbanks to
mcgrath. On Sunday with the ridge building in there will be a
general clearing trend and any isolated thunderstorms will
generally be limited to areas south and east of a line from eagle
to tok. Current guidance shows an increase of several degrees
between Sunday and Monday with the ridge building in and clearing
skies combined with warmer air moving in aloft.

West coast and western interior: gusty winds expected tonight
into Saturday for areas north of CAPE krusenstern with elevated
surf. Some isolated thunderstorms today southeast of a line from
lake minchumina to marshall isolated thunderstorms tomorrow
will generally be southeast of a line from lake minchumina to
mcgrath. Thunderstorm and shower activity will diminish for Sunday
with the ridge building in.

Coastal hazard potential days 3 and 4... But see north slope
section above for more immediate concerns. .

Fire weather
A red flag warning has been issued until 10 pm today for
areas east of chicken for abundant lightning combined with dry
fuel conditions. This evening the isolated thunderstorms will
generally be limited to areas south and east of a line from
chalkyitsik to circle to fairbanks to mcgrath to marshall with
scattered thunderstorms east of chicken. On Saturday isolated
thunderstorms will be limited to areas south and east of a line
from circle to fairbanks to mcgrath. On Sunday with the ridge
building in there will be a general clearing trend and any
isolated thunderstorms will generally be limited to areas south
and east of a line from eagle to tok.

Relative humidity values in the low 20 percent range are expected
this evening for parts of the yukon flats into the southeastern
brooks range. Elsewhere, relative humidity values will remain
above 30 percent for remainder of the forecast areas. In the
areas with relative humidity values below 25 percent temperates
will be in the low to mid 70s. With sustained winds remaining
under 15 mph there are not any red flag concerns in these areas
at this time.

Hydrology
No concerns at this time.&&

Afg watches warnings advisories
Red flag warning for akz224.

Small craft advisory for pkz220.

Gale warning for pkz225-pkz230-pkz235.

Jun 17


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRDA2 - 9497645 - Prudhoe Bay, AK 49 mi55 min SW 15 G 17 48°F 1015.1 hPa

Wind History for Prudhoe Bay, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from AKU (wind in knots)
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Last 24hr------------------SE5S5SW6W5--W4W6S5W12NW13W12W15W12NW14NW12
1 day ago----------------NW5NW5NW5NW43S8S6S6S6CalmN11N5NW83N9NE8
2 days ago----------------W9W6S6W9W7W9W9W12W10W15W14W15W16
G20
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W12

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

Sat -- 01:32 AM AKDT     Moonset
Sat -- 02:22 AM AKDT     0.44 feet High Tide
Sat -- 02:53 AM AKDT     Moonrise
Sat -- 08:25 AM AKDT     -0.14 feet Low Tide
Sat -- 03:22 PM AKDT     0.80 feet High Tide
Sat -- 09:50 PM AKDT     0.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.40.40.40.30.20.1-0.1-0.1-0.1-00.10.30.60.70.80.80.70.50.30.20.10.10.1

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.