Thursday, November15, 2018 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 7:30AMSunset 5:25PM Thursday November 15, 2018 1:15 PM CST (19:15 UTC) Moonrise 1:54PMMoonset 12:00AM Illumination 52% Phase: First Quarter Moon; Moon at 8 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 151759
afdlbf
area forecast discussion
national weather service north platte ne
1159 am cst Thu nov 15 2018

Short term (today and tonight)
issued at 340 am cst Thu nov 15 2018
a pretty decent cold front will move into NRN nebraska around
noontime, arriving in SRN nebraska mid to late in the afternoon.

Temperatures at h850mb and h700mb fall several degrees celsius. Sfc
winds increase to 20 to 30 mph with gusts to around 40 mph across
nrn nebraska as h850 mb winds increase to around 40kt with lesser
speeds south. The forecast uses a model guidance blend plus bias
correction for highs in the upper 50s to lower 60s. This forecast is
generally "middle of the road".

The cooler NAM and ecm guidance was the basis for lows in the 20s
tonight. Winds should become light again with weak high pressure
overhead supporting the cooler guidance which might not be cool
enough given temperatures aloft remain cold and the short term
ground moisture is low.

Long term (Friday through Wednesday)
issued at 340 am cst Thu nov 15 2018
the primary forecast challenge over the next week concerns the
winter weather event Friday evening into Saturday. An upper trough
digs into the northern plains and upper midwest while a strong
surface cold front dives south, bringing a true shot of winter. In
the system's wake, a ridge progresses east across the rockies and a
surface high pressure settles onto the plains.

Friday... Progged to be a mild day with a good deal of sunshine
(through the early afternoon, anyway) and downslope flow. H85 temps
around 7c should translate to mid upper 50s given decent mixing
ahead of the front. The 15 00z model suite is in fairly good
agreement with the FROPA late afternoon to early evening. Expect the
fropa itself to be dry as soundings suggest little to no moisture
below h5. The heart of the mid-level shortwave follows shortly and
fgen really intensifies. Not too confident in precip before 03z as
top-down saturation appears slow. Thermal profiles suggest rapid caa
behind the front, which should support rain or rain snow mix quickly
changing to snow.

Saturday... Still monitoring the potential for accumulating snow,
mainly for the eastern panhandle and perhaps far southwest neb.

Strong h5-7 fgen, a wide ribbon of moisture, and some isentropic
upglide will lead to a band of snow across western neb. Except a
brief period of mix at the onset, snow will be the main p-type with
the system. Soundings indicate ice initiation within the cloud
layer, a deep dgz, and sfc temps below freezing. With Sat am lows in
the 10s 20s and highs only in the 20s to near 30f, looking at
seasonably high slr's (15-17:1). Made little change to overall qpf,
resulting in continued 1 to 2 inch totals for the panhandle and up
to 1 inch along hwy 61. The strongest winds should remain over the
eastern sandhills and central neb, limiting the blowing snow threat
for the highest accumulation areas. Will hold off on any headline,
but continued to highlight in the hwo. Also touched on the stark
contrast in temperatures from Friday to Saturday. Wind chills will
drop into the single digits Sat am and remain in the teens through
the afternoon, making it feel 50 degrees colder than Friday.

Sunday and beyond... The building upper ridge and broad surface high
pressure will combine for an extended period of dry conditions and a
warming trend. Highs should rebound into the lower 50s for SW neb by
Monday and most of the region for Tuesday. Indications point toward
a seasonable thanksgiving (highs around 50f) and generally dry.

Aviation (for the 18z tafs through 18z Friday afternoon)
issued at 1159 am cst Thu nov 15 2018
strong winds with gusts up to 30 knots are possible at both
terminals this afternoon. Winds will gradually diminish after 00z
Friday.VFR conditions return for the remainder of the TAF period
with mostly clear skies and winds under 10 knots.

Lbf watches warnings advisories
None.

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


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ainsworth Regional Airport, NE10 mi40 minNW 23 G 2910.00 miFair and Windy56°F24°F30%1016.3 hPa

Wind History from ANW (wind in knots)
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Last 24hrSW10SW12W6W4SW3SW4SW4SW3SW5SW7SW7SW5W4W5W6W7W7W7W7NW8NW13NW14
G17
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1 day agoW6NW9NW7CalmCalmS3SW4SW7SW4SW6W4SW5CalmSW4CalmSW5SW5SW4SW5SW5SW7SW7SW8SW11
2 days agoNW11
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NW7NW3CalmCalmSW3SW3SW6SW5SW4SW4W4W5SW3W4W3W5W4W5W5W6W9

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.
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Wind Forecast for North Platte, NE (14,3,4,5)
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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.