Wednesday, February20, 2019 L-36.com


Marine Weather and Tides
Johns, NE

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:29AMSunset 6:24PM Wednesday February 20, 2019 9:48 AM CST (15:48 UTC) Moonrise 7:50PMMoonset 8:25AM Illumination 99% 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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7 Day Forecast for Marine Location Near Johns, NE
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location: 42.73, -100     debug


Area Discussion for - North Platte, NE
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Fxus63 klbf 201116 aaa
afdlbf
area forecast discussion... Updated
national weather service north platte ne
516 am cst Wed feb 20 2019

Short term (today through Thursday)
issued at 314 am cst Wed feb 20 2019
a dry punch of air is moving through WRN nebraska and has reached
the vad wind profiler at klnx radar. The rap model soundings show
this dry air disrupting the seeder-feeder snow growth process ending
the significant snowfall currently underway. The dry air associated
with a h700mb trof lifting northeast will progress east this morning
ending the snow across ncntl nebraska by late morning.

The snow forecast this morning uses the hrrr, rap and href models
for additional snowfall of up to 1 inch across ncntl nebraska. The
winter weather advisory will be allowed to expire this morning at 9
am. This includes a three hour extension across parts of the
sandhills and southwest nebraska as the snow is slower to exit
the region than previously predicted.

The short term model blend is in place tonight and Thursday morning.

A blend of the sref, nam, ecm and GFS is in place Thursday
afternoon. The models show a 700mb warm front advancing north
through WRN nebraska Thursday afternoon which will support a chance
of snow. The GFS ensemble shows this snow also but includes snow
chances across ncntl nebraska as well. Later forecasts can refine
the snow chance Thursday afternoon.

The temperature forecast leans on a blend of bias corrected guidance
today, tonight and Thursday. This is the coolest forecast available
tonight and Thursday. The hrrr and rap were cooler for highs today
across northern nebraska but given the expected afternoon sun, the
warmer bias corrected guidance is in place.

Long term (Thursday night through Tuesday)
issued at 314 am cst Wed feb 20 2019
north central nebraska will remain in a fairly active pattern for
the beginning of the extended period with several systems impacting
portions of the forecast area.

The first major system will occur on Friday and last through
Saturday. This system will bring a prolonged period of snow to the
region. At this time, by Saturday evening, most locations will see
at least a couple inches of snow with the exception of the western
sandhills where under an inch is possible. The heaviest snow will
accumulate south of a line from north platte to brewster to lynch.

Here 3 to 5 inches of new snow is expected. One concern with this
system is the chance for some accumulating freezing rain on Friday
evening. Have included just a chance of ice across the forecast area
with just minimal if any accumulations. Confidence in ice potential
will continue to grow over the next couple days.

High pressure and a brief reprieve from the winter weather will
return on Sunday. The next chance of snow returns for the beginning
of next week (Monday and Tuesday). There is still some uncertainty
in the timing and track of this system. For now, will generally keep
most of the region in chance pops with a light 1 to 4 inches
possible (highest amounts across the north central region). This
system will likely change over the next couple days when the models
are in better agreement with one another.

For temperatures... Highs will generally range from the mid 30s
across the south to the low 20s across the north. Overnight low
temperatures drop into the mid single digits to the mid teens. The
coldest night will be on Monday night where overnight lows will
range from the negative single digits in the north to the mid
positive single digits in the south. Wind chill values on this day
will approach 10 below zero across the north.

Aviation (for the 12z tafs through 12z Thursday morning)
issued at 516 am cst Wed feb 20 2019
dry air and clearing skies will develop across WRN and ncntl
nebraska today and remain in place tonight.

Ifr in snow and low ceilings will transition toVFR from west to
east today. Local lifr in fog is possible across WRN nebraska
until 16z this morning.VFR is expected to be widespread across
wrn and ncntl nebraska tonight.

Lbf watches warnings advisories
Winter weather advisory until 9 am cst 8 am mst this morning
for nez006>010-024>029-035>038-057>059-069>071.

Short term... Cdc
long term... Kulik
aviation... Cdc


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ainsworth Regional Airport, NE10 mi53 minW 55.00 miLight Snow13°F9°F87%1001.7 hPa

Wind History from ANW (wind in knots)
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Last 24hrS8S10S12S13S12SE10SE10SE12SE11SE8SE6SE8SE7S5CalmCalmCalmCalmCalmCalmSW4CalmW5W6
1 day agoNW8NW7NW6NW4CalmCalmCalmE3E3CalmCalmCalmCalmCalmS3CalmCalmS4SE5SE5S7SE6S7S10
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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GOES Local Image of    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
Wind Forecast for North Platte, NE (10,2,3,4)
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Ground Weather Radar Station North Platte, NE
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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.