Tuesday, December10, 2019
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Marine Weather and Tides
Stockville, NE

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:54AMSunset 5:15PM Monday December 9, 2019 11:50 PM CST (05:50 UTC) Moonrise 3:54PMMoonset 5:04AM Illumination 97% Phase: Waxing Gibbous; Moon at 13 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 Stockville, NE
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location: 40.6, -100.37     debug


Area Discussion for - North Platte, NE
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FXUS63 KLBF 100534 AFDLBF

Area Forecast Discussion National Weather Service North Platte NE 1134 PM CST Mon Dec 9 2019

UPDATE. Issued at 916 PM CST Mon Dec 9 2019

Cameras indicate accumulating snow across northern Nebraska. A forecast update is in place using the short term model blend. This produced accumulations of less than an inch, generally north of highway 2.

SHORT TERM. (This evening through Tuesday night) Issued at 336 PM CST Mon Dec 9 2019

Impacts/Highlights and Confidence: Limited sensible weather concerns in the short term. There is potential for flurries or very light snow across parts of northern NEB tonight into tomorrow morning, best chances across far northwest NEB with little to no accumulation expected.

Impacts/Highlights and Confidence: Latest day cloud phase distinction imagery and surface obs show scattered to broken mid and high level ice clouds tracking eastward across the area. A weak northern stream positive pv anomaly moves into the Central High Plains late today/early tonight. Moisture and magnitude of forcing is a concern. Lee-side convergence sets up tonight from the black hills under northwest flow along with the development of lower tropospheric frontogenesis focused across northwestern NEB. Current thinking is this will result in mainly flurries to very light snow with soundings show dry air that needs to be overcome initially at low-levels with a very light QPF. Decreasing sky cover then tomorrow with fair conditions through tomorrow night. Northwest flow aloft tomorrow then keeps cooler temperatures in place with only little improvement compared to today.

LONG TERM. (Wednesday through Monday) Issued at 336 PM CST Mon Dec 9 2019

Impacts/Highlights and Confidence: Warming trend takes hold early in the long term peaking Friday. Friday highs are forecast in the 40s to lower 50s ahead of a front, this is about 5 to 10 degrees above seasonable normals. Slight chances for snow Friday night. However, confidence is low in occurrence and location/timing at this time. There is then potential for unsettled conditions/snow Saturday night-Sunday but confidence is low due to a wide forecast envelope. It will be something to monitor as we go forward.

Discussion: Large scale pattern will be characterized by a mid- level longwave trough extending from Hudson Bay south to the Lower Mississippi Valley early Wednesday. Upstream there is northwest flow over western NEB and a northern stream shortwave trough apparent near northern ID embedded within an upper trough. Weak southerly low-level flow starts to form Wednesday as the flow aloft becomes zonal that starts a slight warm up in the far southwest. The northern stream trough then tracks southeastward into the central High Plains by Wednesday night. Meanwhile, a weak cold front is expected to advance into the area with the main sensible weather impact more so related to wind/wind shift. Warmer conditions anticipated Thursday as a lee-side trough sharpens with a developing surface low pressure system near southern Alberta/Northern High Plains associated with a shortwave trough near southern Alberta. This upper trough digs south into the Northern Plains Friday with its cold front starting to then move into the area. However, moisture and forcing appears to be limiting factors with respect to precipitation. The former with dry air in place in the lower-levels and the latter with the best lift late Friday and Friday night northward along with the better isentropic ascent at 285K and 290K surfaces in the DGZ. Colder air moves in this weekend with a stronger cold front late Saturday and Saturday night. While there is potential for unsettled conditions and snow chances this weekend as an upper trough deepens in the western CONUS, there is increasing uncertainty given forcing and timing seen between guidance.

AVIATION. (For the 06Z TAFS through 06Z Tuesday night) Issued at 1134 PM CST Mon Dec 9 2019

A band of light snow continues to develop across portions of north central into central Nebraska in the lee of the Black Hills. This is expected to diminish and end by 09Z. At KVTN, ceilings have improved to VFR and should slowly lift overnight. The light snow should remain west of the KVTN terminal. Ceilings remain VFR except where light snow exists. Overnight through Tuesday morning, skies are expected to remain mostly cloudy across most of western Nebraska, with clearing occurring Tuesday afternoon.

LBF WATCHES/WARNINGS/ADVISORIES. None.

UPDATE . CDC SHORT TERM . ET LONG TERM . ET AVIATION . Roberg


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
McCook, McCook Municipal Airport, NE28 mi58 minW 810.00 miFair20°F14°F78%1021.6 hPa

Link to 5 minute data for KMCK

Wind History from MCK (wind in knots)
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Last 24hrW10NW9N32
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1 day agoW7W10W124W6W5SW5W5W6W4W3SW5W7CalmCalmCalmE3SE5S4S3S4S6CalmW7
2 days agoSW6SW6SW7SW4SW6SW5S5SW6SW8CalmSW4SW5S5S8S10S12S11S8S8SW9SW8SW9W7W6

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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 (0,6,7,8)
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Ground Weather Radar Station Grand Island, NE
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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.