Thursday, August22, 2019 L-36.com


Marine Weather and Tides
Prudhoe Bay, AK

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:57AMSunset 9:49PM Thursday August 22, 2019 6:05 PM AKDT (02:05 UTC) Moonrise 9:12PMMoonset 3:21PM Illumination 50% Phase: Third Quarter Moon; Moon at 22 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- 151 Pm Akdt Thu Aug 22 2019
Tonight..W winds 15 kt. Seas building to 4 ft. Rain.
Fri..NW winds 15 kt. Seas 6 ft. Fog.
Fri night..W winds 15 kt. Seas 6 ft.
Sat..W winds 25 kt. Seas 6 ft. Fog, rain.
Sat night..W winds 20 kt. Seas 7 ft. Fog.
Sun..W winds 25 kt. Seas 7 ft. Fog.
Sun night..W winds 20 kt. Seas 5 ft.
Mon..W winds 20 kt. Seas 6 ft.
Tue..W winds 15 kt. Seas 3 ft.
PKZ200 Norton Sound- 156 Pm Akdt Thu Aug 22 2019
Tonight..N winds 20 kt. Seas building to 4 ft.
Fri..N winds 20 kt. Seas 4 ft.
Fri night..N winds 20 kt. Seas 4 ft.
Sat..N winds 15 kt. Seas 3 ft.
Sat night..NW winds 15 kt. Seas 3 ft.
Sun..W winds 15 kt. Seas 3 ft.
Sun night..W winds 15 kt. Seas 3 ft.
Mon..SW winds 15 kt. Seas 3 ft.
Tue..SW winds 15 kt. Seas 4 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 222143
afdafg
northern alaska forecast discussion
national weather service fairbanks ak
143 pm akdt Thu aug 22 2019

Discussion
Synopsis... A front extending from northwest of kaktovik extends
southwest through the brooks range and into the central interior.

This will bring cloudiness and some showers to those areas
through this evening, and the brooks range will likely see snow
above the 2000 foot level or so. This will push east into canada
overnight with another taking its place Friday night. All this is
part of a broad cyclonic circulation around a low pressure area in
the northern arctic. Also associated with this is a deep fetch of
northerly winds, the main impacts from these being 20 to 25 kt
winds along the northwest arctic and west coasts with cooler
temperatures behind it, and elevated surf conditions from
approximately point barrow to shishmaref this evening through
Saturday.

22 12z model solutions continue to show good agreement over the
larger scale into the weekend, but start to diverge toward the end
of the weekend, especially in regards to how quickly the
lows shortwaves rotate around the parent north arctic low,
especially with the multiple shortwaves moving across the north
slope.

Aloft... A 521 dam low near the north pole is spinning multiple
shortwaves out from its center. One shortwave extends generally
southeast into the northwest territories of canada, one extends
south into the eastern north slope, brooks range, and interior.

Farther west, this is the system bringing a long fetch of
northerly winds into the western arctic and west coasts, with a
high pressure ridge currently over eastern russia. A 550 dam area
of low pressure south of st lawrence extends a trough into the yk
delta this afternoon.

The low will shift west Friday, strengthening to a 516 dam low,
with shortwaves roughly in the same areas as today. The ridge over
russia will expand eastward to impact portions of the west coast,
for the most part keeping precipitation out of the area, at least
in the seward peninsula. Saturday, the low drops south and east,
pushing the main shortwave east over far eastern interior and the
yukon territory, and dropping another shortwave over the west
coast. Stronger winds can be expected Friday and Saturday with the
tighter pressure gradient anticipated over the north slope and
western arctic coast. The low near st lawrence island will shift
south to st paul island by Fri afternoon as a 548 dam low, with a
trough extending through bethel and into the alaska range. This
feature will continue southeast and be over the aleutians as a 552
dam low by Saturday night.

Arctic coast and brooks range...

a front dropping south and east will bring showers and increasing
winds from point hope to utqiagvik this evening. Overnight and
Friday, this front will push further southeast, with showers from
nuiqsut east and more snow moving into the brooks range. As the
low pressure system moves closer to the coast, expect gusty west
winds of 20 to 25 mph from deadhorse east and northwest winds of
15 to 20 mph across the higher elevations of the eastern brooks
range Friday. Friday night and Saturday, the low will be not far
offshore north of demarcation point, with west to southwest winds
of 20 to 30 mph across the eastern portions of the north slope.

Wave heights of up to 8 feet are expected off shore of kaktovik at
this point, but impacts should be limited as the winds will be
generally southwesterly, so waves should break away from shore.

Gusty west winds return Sunday, as another shortwave makes its way
across the north slope. Expect another day of cooler temperatures
Friday before a warmup back to the mid to upper 40s on Saturday
and Sunday. Temperatures will fall again next week, however.

West coast and western interior...

generally good weather is expected the next few days. Expect a few
showers tonight and Friday over the seward peninsula associated
with a weak shortwave, but otherwise weak ridging will keep the
majority of the region dry into the weekend. The main concern will
be the northerly winds increasing tonight through Saturday. Expect
20 to 30 mph winds through this period. Elevated surf is expected
along north facing coastlines from point barrow west and down to
shishmaref, as well as on st lawrence island. Temperatures will be
a couple of degrees cooler Friday and Saturday.

Central and eastern interior...

expect light winds and periods of showers through the weekend and
into early next week as weak surface low pressure sits over the
eastern interior. With less than a quarter of an inch of rain
expected over 2 to 3 days, this will not impact the rivers much at
all. Temperatures will remain pretty steady through the weekend,
with a slight cooling trend early next week.

Coastal hazard potential days 3 and 4... None. Expect elevates seas
off the arctic coast Sunday, but highest wave action is expected
to remain offshore.

Fire weather
Have very little concerns regarding fire weather. Relative
humidity values will remain near or above 40 percent across the
state. Winds will be pretty light with no thunderstorm activity
expected.

Hydrology
River levels have been falling and will continue to fall for the
next few days, although ground water remains high. Some ponding in
low lying areas along rivers and streams is still possible, but
will be less likely as river levels continue to fall. Any
additional rainfall over the next few days will not significantly
affect water levels. Continue to use caution around waterways as
trees and other debris will be making its way downstream.

Afg watches warnings advisories
Small craft advisory for pkz210-pkz220.

Aug 19


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRDA2 - 9497645 - Prudhoe Bay, AK 49 mi53 min NNW 9.9 G 11 44°F 45°F1003.6 hPa

Wind History for Prudhoe Bay, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kuparuk, Ugnu-Kuparuk Airport, AK13 mi17 minNNW 1010.00 miLight Drizzle41°F39°F93%1004.4 hPa

Link to 5 minute data for PAKU

Wind History from AKU (wind in knots)
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Last 24hr------------------W9W11W9W9W9W7W6W8W8--NW6NW6NW8N5N10
1 day ago--------------------SE5--SE3S4SW6SW6--SW4SW7SW8W8NW7NW5NW3
2 days agoNW8----------------NW3NW5NW4NW5NW3--W2----NE3E4NE4--NE3E8

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.