Friday, July19, 2019 L-36.com


Marine Weather and Tides
Nunam Iqua, 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 4:57AMSunset 11:14PM Friday July 19, 2019 3:47 PM AKDT (23:47 UTC) Moonrise 11:32PMMoonset 7:06AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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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7 Day Forecast for Marine Location Near Nunam Iqua, AK
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location: 62.62, -164.85     debug


Area Discussion for -
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Fxak69 pafg 192231
afdafg
northern alaska forecast discussion
national weather service fairbanks ak
231 pm akdt Fri jul 19 2019

Synopsis
A strong low pressure system will move into the north slope and
deepen during the day on Saturday. This will bring wind gusts up
to 40 mph through the brooks range passes and winds gusts in
excess of 50 mph Saturday afternoon and evening east of deadhorse.

Rainfall amounts up to 1" are possible across the western north
slope by Saturday evening.

Elevated surf is possible for southwest facing shorelines on st.

Lawrence island, diomede, and chukchi sea coast south of point
hope on Sunday as the pressure gradient tightens between an area
low pressure over siberia and high pressure to the east.

Discussion
North slope and brooks range:
strong cyclogenisis is expected to occur over the north slope on
Saturday as shortwave trough and associated 500mb vort max
interact with baroclinic zone over the area. There are some
discrepancies between the placement of the surface low on
Saturday, but guidance generally indicates that the surface low
will deepen to 994-998mb over the beaufort sea by Saturday
evening. This will create southwest winds 20 to 30 mph with gusts
up to 40 mph through the brooks range passes Saturday morning into
the afternoon hours. As the low center moves north, expect west
winds 20 to 35 mph with gusts up to 50 mph mainly east of
deadhorse for Saturday afternoon and the evening. Given the
probability of winds reaching 60 mph across barter island, we’ve
decided to issue a high wind watch for this area for sat.

Afternoon and evening. Rainfall totals across the western north
slope will reach 0.5-1.0” by Saturday evening.

Central and eastern interior:
conditions will remain fairly quiet over the weekend as most major
systems will remain north and west of the area. Lee-side troughing
on the southeast side of the brooks range combined with cape
values peaking up to 200 j kg this evening will bring a chance for
shower and isolated thunderstorms to the southern foothills of the
brooks range mainly along and east of the dalton highway. A
thermal trough extending from a fort yukon to delta junction line
east into yukon territory with CAPE values peaking around 300 j kg
will also bring chances for showers and isolated thunderstorms
this evening for these portions of the eastern interior.

As a weather front approaches the central interior on Saturday,
winds are expected to increase ahead of it during the afternoon
hours. Southwest winds from 10 to 20 mph are expected during the
day. Gusts up to 25 mph are expected across the yukon flats. With
ongoing wildfires, this could bring additional smoke to
communities in the yukon flats. Isolated showers and
thunderstorms will develop during the afternoon mainly east of a
tok to chicken line.

West coast and western interior:
a weather front moving into the west coast will bring chances for
more organized rainfall Saturday. Rainfall amounts will be
heaviest north of a kotzebue to ambler line with in excess of
0.25” by Saturday evening. Amounts will generally be less than
0.10” elsewhere.

On Sunday, an elongated southwesterly wind fetch will develop over
the bering sea from st. Lawrence island through the bering strait
up to the chukchi sea coast. Winds will increase to 20 to 30 mph
across this area during the day. Latest guidance suggests that
this will lead to elevated surf for southwest facing shorelines
such as gambell, diomede, and kivalina. At this time, coast
flooding is not anticipated.

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

Fire weather
The cold front that passed last night has decreased thunderstorm
potential throughout most of our forecast area. Isolated
thunderstorms are still possible this afternoon in the interior
east of fairbanks. The highest possibility for convection is
along the eastern alaska range and in the fortymile country.

A cold front that continues to pass through the interior has cloud
cover and southwesterly winds behind it, which will bring cooler
temperatures for most of the interior with an increase in rh
values. The cooling trend will continue through Sunday. The
airmass behind the front will be more stable, limiting chances for
thunderstorm development. The low moving through the interior
will also increase wind speeds today, bringing gusty west to
southwesterly winds, especially to areas north of the yukon river
today. Winds should taper tomorrow into Sunday, depending on location.

The area of most concern, the yukon flats, will also see some
moderating temperatures and relative humidities. However,conditions
will remain somewhat dry as there is not forecast to be any wetting
rains with the passage of this system. On the north slope, two
fronts moving through the region will decrease temperatures,
increase rh and produce rainshowers. The west coast will be under
the influence of onshore flow from the bering sea which will
moderate temperatures and rh values there as well.

Bjb

Hydrology
0.25 to 1.0 inches of rainfall is expected across much of the
north slope and the brooks range on Saturday as a series of
systems move through the area. This will cause some minor rises in
rivers that drain the brooks range.

Afg watches warnings advisories
Small craft advisory for pkz220.

Jul 19


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from AEM (wind in knots)
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Last 24hr----------------------CalmSW4SW4SW4SW4SW4SW6SW7SW9SW8W10W9W11
1 day agoE5E4E5NE4NE8NE5N5N6NE5N5NE8NE6N6N6NE5NE4NE4NE6NE5CalmNE5NE5NE3E5
2 days agoNE7--NE13NE13NE11NE12NE10N9N7N6N6N7N7NE5NE5NE4NE4N4NE5NE6NE6E4NE6NE4

Tide / Current Tables for Kwikluak Pass, Yukon River, Bering Sea, Alaska
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Tide / Current data from XTide NOT FOR NAVIGATION
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Tide / Current Tables for Black, Black River, Bering Sea, Alaska
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Tide / Current data from XTide NOT FOR NAVIGATION
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Weather Map and Satellite Images
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GOES Local Image of Alaska    EDIT
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Ground Weather Radar Station Nome, 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.