Saturday, December16, 2017 L-36.com


Marine Weather and Tides
Nunn, CO

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 7:16AMSunset 4:36PM Saturday December 16, 2017 9:42 AM MST (16:42 UTC) Moonrise 6:37AMMoonset 4:53PM Illumination 3% Phase: Waning Crescent; Moon at 28 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 Nunn, CO
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location: 40.66, -104.88     debug


Area Discussion for - Denver/Boulder, CO
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Fxus65 kbou 161052
afdbou
area forecast discussion
national weather service denver boulder co
352 am mst Sat dec 16 2017

Short term (today and tonight)
issued at 352 am mst Sat dec 16 2017
today is starting off quite mild with current temps near 50f in a
few spots along the foothills where light westerly breezes have
held. Meanwhile shallow cold inversions have developed in low
lying areas. Surface analysis shows a cold front pushing south
through wyoming and this front will push across the plains and
i-25 corridor later this morning. Significant cooling is lacking,
but there will be enough upslope and upper level cloudiness to
take several degrees off high temperatures today. We'll still be
running nearly 10 degrees above normal.

For tonight, low level moisture will continue to increase with
weak upslope behind the front. We expect narrow t TD spreads with
areas of light drizzle and fog developing. Cross sections shows
warmer temperatures in the moist layer, now approaching only -8c
(no ice nucleation) so if we see light precipitation it will
likely be in the form of freezing drizzle versus light snow. At
this time, don't expect a widespread event but something to watch
is how much low level moisture can advect in. If freezing drizzle
does become more widespread, may see some impacts on elevated
surfaces like bridges and overpasses. Mountain areas will have a
hard time seeing any deeper moisture through tonight so we may be
able to totally remove chance of precipitation there.

Long term (Sunday through Friday)
issued at 352 am mst Sat dec 16 2017
Sunday morning will begin with some lingering fog, stratus and
possibly a little freezing drizzle as the cold airmass will remain
over the area. By midday, conditions will be improving as drier
air aloft mixes to the surface under weak flow and subsidence.

Temperatures will remain chilly through the afternoon. Monday
through Wednesday will see temeratures moderate as forecast models
show the flow aloft returning to northwesterly. During this time
period a flat upper ridge will be in place over the rocky
mountains. By Wednesday the models show a decent upper trough
moving over the pacific northwest, on its way to colorado. This
digging trough will contain a good shot of cooler canadian air.

Quasi-geostrophic diagnostics shows a good period of dynamic
forcing over northern colorado on Thursday as the upper trough
moves over the state. MOS guidance shows the high temperatures on
Thursday in the lower to mid 20s, with cooler temperatures then
continuing into the holiday weekend. Will mention the chance of
snow on Thursday for now. The GFS and ECMWF have slightly
different solutions at this time, with trajectory being not quite
northerly enough for a good snow setup over northeast colorado.

Later model runs still have the chance to improve the forecast
scenario, but the main story for now will be the big change in
temperatures from Thursday onward.

Aviation (for the 12z tafs through 12z Sunday morning)
issued at 352 am mst Sat dec 16 2017
main aviation concerns are for low ceilings and potential for
light freezing drizzle after 06z tonight. Cold front will move
across the area switching winds around to the northeast around
16z.VFR conditions will persist today with only broken upper
level cloudiness, but then low level moisture will increase this
evening. Should see a lower ifr deck developing 06z-08z. Enough
low level moisture in weak upslope to warrant a chance of light
freezing drizzle and possible lifr in fog low ceilings. A light
ice glaze is possible especially on elevated surfaces if freezing
drizzle becomes more widespread.

Bou watches warnings advisories
None.

Short term... Barjenbruch
long term... Dankers
aviation... Barjenbruch


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Collins/Loveland - Northern Colorado Regional Airport, CO16 mi47 minN 010.00 miFair34°F23°F64%1011.1 hPa
Greeley, Greeley-Weld County Airport, CO21 mi47 minENE 89.00 miFair43°F12°F28%1012.3 hPa

Wind History from FNL (wind in knots)
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Last 24hrNE3CalmS3S7S3E4CalmNW4NE4N3NE55S7SE3N6CalmE4NE3CalmCalmNE6NE4N3Calm
1 day agoNW7N19
G25
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G28
N22
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N18N13N9NE8SW6SW10SW4S8S4S8S5N3NE5N5N4CalmCalmS3Calm
2 days agoS11S13S11S8S7S6S4S5E8NE7CalmNE8N14
G18
N15
G21
N13N10N10N7
G14
N8SW4S5S5S5SW5

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
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IR Satellite Image from GEOS
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GOES Local Image of CentralPlains    EDIT
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Wind Forecast for Denver/Boulder, CO (11,2,3,4)
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Ground Weather Radar Station Cheyenne, WY
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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.