Thursday, July18, 2019 L-36.com


Marine Weather and Tides
Prudhoe Bay, AK

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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 3:58AMSunset 11:55PM Thursday July 18, 2019 9:55 AM AKDT (17:55 UTC) Moonrise 1:39AMMoonset 3:10AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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- 727 Am Akdt Thu Jul 18 2019
Today..E winds 20 kt. Seas building to 4 ft. Fog.
Tonight..SE winds 20 kt. Seas 4 ft. Fog.
Fri..W winds 30 kt. Seas 6 ft. Fog.
Fri night..SE winds 15 kt. Seas 4 ft.
Sat..SE winds 20 kt. Seas 4 ft. Rain.
Sat night..W winds 10 kt. Seas 4 ft.
Sun..E winds 15 kt. Seas 3 ft.
Mon..E winds 15 kt. Seas 3 ft.
PKZ200 Norton Sound- 721 Am Akdt Thu Jul 18 2019
Today..SW winds 20 kt. Seas building to 4 ft. Fog.
Tonight..W winds 15 kt. Seas 3 ft. Fog.
Fri..SW winds 15 kt. Seas 3 ft. Fog.
Fri night..SW winds 20 kt. Seas 4 ft. Fog.
Sat..SW winds 20 kt. Seas 4 ft. Fog.
Sat night..SW winds 20 kt. Seas 4 ft.
Sun..SW winds 20 kt. Seas 4 ft.
Mon..W 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 180954
afdafg
northern alaska forecast discussion
national weather service fairbanks ak
154 am akdt Thu jul 18 2019

Discussion
Thunderstorm activity will be diminishing today as
flow aloft swings to westerly. A low will move across the chukchi
sea and spread showers over the arctic Thursday. West coast
remains quiet for the most part with isolated showers in the lower
yukon delta. Patchy fog and low stratus will continue over the
coastal areas and most of the seward peninsula and will stick
around through at least Friday.

Models...

the 18th at 00z model suite initialized well against the 00z
surface analysis and verified well against the 06z surface
analysis. The models continue to struggle with track and strength
of synoptic scale features in the mid range and especially in the
extended range. Model spread is reasonable in the short range.

Aloft...

at 500 mb a 527 dm low 250 nm northeast of wrangel island will
continue to spin strong shortwaves east over the north slope,
brooks range and interior over Friday and through the weekend as
a weak ridge of high pressure over the interior pushes south and
east through the weekend and will turn the upper level flow to
west or northwest over much of northern alaska beginning today on
the west coast and western interior and over the central and
eastern interior on Friday. The upper level low near wrangel
island pushes east to be located 500 nm north of demarcation point
on Sunday. An upper level ridge builds north into the southern
bering sea Sunday and Monday and continues to build back into the
interior early next week and will likely bring a return to hot and
dry conditions.

Surface...

the thermal trough continues to lie along the south slopes of the
eastern brooks range across the middle yukon to the southern
nulato hills and will remain quasi stationary today but will push
east as a cold front pushes east through the interior and brooks
range this evening and Friday. A weak low over the eastern brooks
range will continue to push north and east and will be located
over the mckenzie delta Friday morning and will merge with a
strong trough of low pressure rotating around a 996 mb low 500 nm
north of point barrow Friday. A 1032 mb high pressure system over
the central aleutians will push east over the next several days
producing moist westerly flow over much of northern alaska through
the weekend.

A 1007 mb low over the chukotsk peninsula will deepen and move
northeast to be located just south of utqiagvik Saturday morning
as a 1003 mb low. The low will push east to be located near
prudhoe bay Saturday afternoon. A 1006 mb low will move northeast
out of the chukotsk peninsula on Saturday night moving onto the
western north slope Sunday.

Arctic coast and brooks range... Cloudy conditions will continue as
several fronts move through the area over the next few days.

Temperatures cooling with lows dipping into the 30s Friday and
Saturday. Winds will be moving around the dial as the low and
fronts move east across the arctic today and Friday. A period of
westerly winds in the 15 to 30 mph range will briefly elevate
water levels and produce rough surf along the northwest coast
Thursday night and Friday.

West coast and western interior... Isolated thunderstorms in the
upper kuskokwim valley today as the thermal trough is pushed
southeast. Some showers in the lower yukon delta, and along the
chukchi sea coast, otherwise partly cloudy. Winds southwest to
northwest 5 to 15 mph, locally 20 mph along the coast.

Temperatures cooling slowly through the week.

Central and eastern interior... Isolated thunderstorms and showers
generally south of the yukon river today. Cooler temperatures
starting Thursday night. Winds will generally be light from the
west to southwest.

Coastal hazard potential days 3 and 4...

expect minor elevation of water levels and rough surf along the
northwest coast Thursday night and Friday as strong westerly winds
in the 15 to 30 mph range move over the area.

Fire weather
Generally light winds over all of the interior with warm and dry
conditions will continue today. Good relative humidity recovery
will continue through the weekend. Isolated thunderstorms and
showers, mainly south of the yukon river today and this evening,
then in the southeast interior Friday as the ridging aloft is
pushed southeast by an upper level low that will change flow over
the area to westerly. In the arctic much cooler temperatures
Thursday night and into the weekend.

Hydrology
Glacial fed rivers that are currently running high will fall
slowly through the weekend.

Afg watches warnings advisories
Small craft advisory for pkz230-pkz235.

Ccc jul 19


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRDA2 - 9497645 - Prudhoe Bay, AK 49 mi56 min ESE 15 G 20 43°F 46°F1008.7 hPa (-1.3)

Wind History for Prudhoe Bay, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kuparuk, Ugnu-Kuparuk Airport, AK13 mi68 minE 1110.00 miMostly Cloudy45°F42°F93%1009.5 hPa

Wind History from AKU (wind in knots)
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Last 24hrN7NE7NE7NE8NE8NE7NE11NE11NE12NE10----------------NE6NE8NE10E10E10E11
1 day agoSE9SE8S5W14W14W15W15W15W17W16----------------NW13NW12NW10NW12N55
2 days agoE8NE8NE7NE7E7NE7E7E7E8E8----------------SE6E4E8SE8SE8SE8

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.
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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.