Sunday, November18, 2018 L-36.com


Marine Weather and Tides
Nunn, CO

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 6:50AMSunset 4:41PM Sunday November 18, 2018 9:40 AM MST (16:40 UTC) Moonrise 3:37PMMoonset 2:44AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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 181557
afdbou
area forecast discussion
national weather service denver boulder co
857 am mst Sun nov 18 2018

Update
Issued at 855 am mst Sun nov 18 2018
last of the shallow fog in the river bottoms, such as along the
south platte river downstream from platteville, has nearly
dissipated. Satellite and observations still indicate a bit of fog
around greeley, ft. Morgan and sterling. Even that should
disappear during the next hour. Otherwise, clear skies and light
and variable breezes on tap for today, as indicated in the current
forecast. Lastly, will need to monitor morning temp trends in the
mtn valleys and along the south platte where temps may not warm
as much as those indicated in the forecast due to poor boundary
layer mixing.

Short term (today and tonight)
issued at 339 am mst Sun nov 18 2018
higher clouds are clearing from the north but the low clouds have
held on pretty well with light winds near the front range. There
has been some erosion of the low clouds north of a longmont-akron
line, followed by a mix of low cloud redevelopment or fog in low
lying areas and cooling elsewhere. Temperatures are down in the
single digits near the northern border where there is drier air at
the surface. For the denver area, the low clouds will likely
prevent fog formation, then break up by mid morning. Some patches
of fog may persist through mid morning with the weak november sun
and some wet snow on the ground, otherwise it will become clear.

Only minor adjustments needed for the rest of the forecast. I did
raise temperatures in the mountains today, as most areas are
already warming and the clouds have lasted long enough to prevent
strong cold pools from forming in the valleys. For tonight some
clouds will move over the northeast plains. Moderate winds will
keep temperatures up over the ridges and foothills, while valley
areas look a little colder than what we had forecast with a pretty
dry airmass for good radiation overnight.

Long term (Monday through Saturday)
issued at 339 am mst Sun nov 18 2018
Monday through Wednesday, a ridge of high pressure will allow
for dry, stable and warmer conditions to develop across the cwa.

The flow aloft will be northwesterly through Wednesday. A weak
short wave trough may pass to the south of co on Wednesday. Little
to no impact is expected with this system. Temperatures will be
at or above seasonal normals. Thursday and Friday, an increasing
southwesterly flow aloft develops on Thursday. An upper level
trough will be moving into central co by 00z Friday. Moisture will
increase over western co with showers developing in the mountains
Thursday afternoon, then increasing in coverage Thursday night.

This system is fairly progressive with the best chance of snow
Thursday evening, then drier and more stable conditions occur by
12z Friday. It appears to be too stable and dry to support any
showers over the northeast plains Thursday night. A dry westerly
flow associated with a flat short wave ridge will be over the cwa
on Friday afternoon. Temperatures Friday will be a little cooler
and closer to normal.

The GFS has the next system over the snake river valley of
southern id by 12z Saturday with moisture increasing in the
northern mountains again Friday night. The GFS shifts the trough
axis across northern and eastern co Saturday afternoon, with a
slight chance of showers progged to impact the lower elevations
as well by that time. Timing differences are magnified over the
weekend however, with the GFS the faster of the two. If the ecmwf
verifies, then the best chance of snow will be Saturday night into
Sunday of next weekend. The ECMWF develops a closed upper level
low near the four corners Saturday night then moves it near the tx
panhandle by 12z Sunday. Although this may be too far south for
heavy snow, there will be a deeper easterly flow due to the closed
circulation which may favor a decent period of at least some
light to moderate snowfall. Too much uncertainty at this time but
it bears watching.

Aviation (for the 18z tafs through 18z Monday afternoon)
issued at 855 am mst Sun nov 18 2018
clear mostly clear skies and light southerly breezes, generally
under 10 kts today. Should see a gradual increase in high clouds
tonight, but they sholdn't have any impact on airport operations.

Look for the normal drainage wind pattern to set up around sunset.

Bou watches warnings advisories
None.

Update... Baker
short term... Gimmestad
long term... Cooper
aviation... Baker


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Collins/Loveland - Northern Colorado Regional Airport, CO16 mi44 minW 410.00 miFair22°F19°F89%1025.5 hPa
Greeley, Greeley-Weld County Airport, CO21 mi44 minN 00.25 miFreezing Fog16°F14°F92%1029 hPa

Wind History from FNL (wind in knots)
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Last 24hrE11E12E12E11E11E8E7E5E7E6SE6SE6SE5S5SE5SE4S3S5S3S3S4SW4S4W4
1 day ago--SW3S3SE5N3S5CalmW3CalmNE15NE12NE9N5N6NE7NE5E5E4E5NE7NE7E14E14E12
G17
2 days agoS7S10S8S8S10S9S7S8S7SW5NE6NE7N6N5N6N7N3N4W3S7SW3S3N5N3

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 CentralPlains    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 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.