Friday, August18, 2017 L-36.com


Marine Weather and Tides
Moorefield, NE

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:55AMSunset 8:37PM Friday August 18, 2017 10:36 PM CDT (03:36 UTC) Moonrise 2:25AMMoonset 5:20PM Illumination 10% Phase: Waning Crescent; Moon at 26 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 Moorefield, NE
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location: 40.77, -100.34     debug


Area Discussion for - North Platte, NE
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Fxus63 klbf 182300
afdlbf
area forecast discussion
national weather service north platte ne
600 pm cdt Fri aug 18 2017

Short term (this evening through Saturday)
issued at 249 pm cdt Fri aug 18 2017
latest visible satellite imagery shows a few-sct diurnal cu
developing across the panhandle and across southwest sd northwest
neb into the sandhills. Sensible weather-wise conditions are
quiet. Water vapor imagery shows an upper level ridge roughly
across the central great basin-central rockies into central
saskatchewan progressing eastward as an upper level trough
advances across british columbia to northern alberta.

Modest 500 hpa height rises are expected to continue overhead in
tandem with northwest flow tonight as the mid-level ridge moves
over the central high plains. Thereafter the ridge will move to
eastern neb-upper mississippi valley by tomorrow afternoon with
zonal flow in place by tomorrow morning that will continue through
the day. Of which, a weak shortwave trough is expected to track
into the central high plains by tomorrow afternoon.

Clear skies combined with good radiational cooling conditions
tonight (e.G., light winds) is expected to support lows falling
to near seasonal values tomorrow morning. Tomorrow, decent
moisture delivery via return flow setting up across southwest neb
into central and north central neb. Meanwhile, a lee surface
trough will evolve and sharpen by the co front range and laramie
mountains. Surface dew points tomorrow afternoon forecast to range
from the mid 50s in southwest neb to lower 60s in north central
neb. This moisture combined with steepening lapse rates at mid-
levels (700-500 hpa from 7.5-8.5 c km) should contribute to at
least moderate instability, mlcapes 1200-2000 j kg, across
southwest neb into north central neb. Deep layer vertical wind
shear appears favorable for some strong to severe thunderstorms
with values of 25-40 kts promoting organized multicells and some
supercells with regard to storm mode. Severe threat is expected to
be isolated in nature with storms developing then moving east to
east southeast. Best chances in vicinity and east of trough, thus
covering the areas of southwest neb to central and north central
neb.

Long term (Saturday night through Friday)
issued at 249 pm cdt Fri aug 18 2017
the main forecast challenges this forecast period were
precipitation chances over the weekend into Monday and the day
of the total eclipse.

A weak short wave trough will be situated across central nebraska
Saturday evening bringing shower and thunderstorm chances Saturday
evening into the overnight hours followed by another disturbance
bringing shower thunderstorm chances on Sunday evening into Monday
morning. Severe weather is not expected at this time, however an
isolated strong to severe storm cannot be ruled out. The main
concern will be rainfall amounts associated with the
showers thunderstorms as several locations across north central
nebraska saw area of 6 inches or greater rainfall this past week,
thus creating flooding concerns as the ground is still very
saturated.

As for Monday (the day of the eclipse), some models are suggesting
the possibility of a few mid to high clouds moving in mid morning
through afternoon across parts of the sandhills. However, at this
time it does not appear to be widespread in coverage, later
forecasts will give a better handle on cloud coverage and timing.

Overall, a significant amount of uncertainty remains and this will
need to be assessed more so on the day like the character of any
high or mid clouds (e.G., opacity - opaque vs. Translucent vs.

Transparent). Please continue to monitor forecasts, discussions,
and social media as trends become better established and
confidence grows. At this time, another upper level trough will
move across late Monday bringing chances of showers and
thunderstorms Monday evening, the night of the eclipse.

Tuesday and beyond, another chance of showers and thunderstorms
Tuesday night associated with an upper level through, then a ridge
will build in across the west bringing drier conditions through
Thursday.

Aviation (for the 00z tafs through 00z Saturday evening)
issued at 600 pm cdt Fri aug 18 2017
no aviation concerns tonight through Saturday morning, with clear
skies and light winds. By late Saturday afternoon, isolated
thunderstorms could develop in the klbf vicinity from 22z-00z.

Any storms which do develop, could be strong with hail and strong
winds gusts.

Lbf watches warnings advisories
None.

Short term... Et
long term... Gomez
aviation... Roberg


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lexington, Jim Kelly Field Airport, NE30 mi42 minN 410.00 miFair73°F62°F69%1016.6 hPa

Wind History from LXN (wind in knots)
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Last 24hrSE8S3N6W6SE12
G19
SE4S4CalmSW4NW5W3W6NW8NW7W4W4CalmCalmSW3SW4SW3S6CalmCalm
1 day agoNW4W4W6W3W4NW5NW4W3NW3NW3W4W9W9SW9W7SW6SW9S9S8S9SE6SE6SE6SE7
2 days agoE13
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SE5NE5NW12NW8NW12NW13NW16NW12
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N11NW8W5W5

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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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralPlains    EDIT
Geos

Wind Forecast for North Platte, NE (23,6,7,8)
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Ground Weather Radar Station North Platte, NE
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weather_mapweather_map weather_map

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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.