Thursday, July18, 2019 L-36.com


Marine Weather and Tides
Nunn, CO

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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 5:43AMSunset 8:29PM Thursday July 18, 2019 3:43 PM MDT (21:43 UTC) Moonrise 9:54PMMoonset 7:15AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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 182130
afdbou
area forecast discussion
national weather service denver boulder co
330 pm mdt Thu jul 18 2019

Short term (this evening through Friday)
issued at 218 pm mdt Thu jul 18 2019
mostly clear skies will prevail through tonight. Even though it
will be dry and clear, the very warm airmass will result in warm
overnight lows. Southwest flow aloft around an upper level ridge
will bring another hot day to northeast colorado Friday. Airmass
will moisten slightly Friday. However, doesn't appear there will
be enough moisture for any showers or storms. Though there should
be more afternoon cumulus than today. Convergence along a surface
trough near the colorado kansas border could produce a couple of
showers and storms. Even if this occurs this should stay east of
the forecast area. Temperatures will be hot again with highs
topping out near 100 degrees over northeast colorado. With highs
expected to top out around 100, the record high of 101 for the
denver area could be tied or broken.

Long term (Friday night through Thursday)
issued at 318 pm mdt Thu jul 18 2019
a seasonally strong cold front will move southward out of
nebraska wyoming across the eastern plains of colorado on Friday
night. This front will increase low level moisture and turn winds
northeasterly with gusts up to 30 mph behind it. Low clouds will
form during the early morning and will stick around through
about midday due to the strong inversion overhead. This will keep
temperatures much cooler so highs in denver were lowered to the
low 80s. It is possible that this forecast high is still too hot
but I refrained from lowering highs even further as there remains
a bit of uncertainty on the strength of the front and low level
moisture. A weak shortwave aloft, along with good low level
upslope flow, will provide enough lift to generate afternoon and
evening thunderstorms. These storms will favor the mountains and
will weaken the farther east they go onto the plains due to the
stable air. Shear is rather weak so the severe threat will stay
low. With weak mean winds and precipitable water values
increasing to between 1 to 1.25 inches around 00z, some of the
storms could produce heavy rainfall and perhaps minor flooding
especially in the foothills southwest of denver.

A relatively strong high pressure system will position itself over
the central great plains on Sunday. This will keep low level winds
easterly across the plains with low clouds and cool temperatures.

The inversion over the plains will likely be stronger on Sunday so
storms should stay mainly over the mountains. I lowered high
temperatures in the denver area to the upper 70s.

During the first half of next work week, the mid to upper level
ridge will strengthen while the high at the surface meanders
slowly southeastward over the central great plains. This means
mountains will see a daily chance for storms due to the upslope
flow but the eastern plains will likely be dry since the inversion
will be too much to overcome. Temperatures will slowly work their
way back towards seasonal normals.

During the latter half of the week, temperatures will start to
warm above normal as the ridge aloft stays in place but the high
at the surface moves eastward and weakens.

Aviation (for the 18z tafs through 18z Friday afternoon)
issued at 218 pm mdt Thu jul 18 2019
vfr conditions will prevail through Friday with only some high
clouds at times. Wind direction will be the biggest challenge for
the forecast. Westerly winds are expected to linger through the
early evening at less than 20 knots. Winds are than expected to
turn a normal drainage direction after sunset.

Bou watches warnings advisories
Red flag warning until 7 pm mdt this evening for coz212-215-218.

Short term... Meier
long term... Danielson
aviation... Meier


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Collins/Loveland - Northern Colorado Regional Airport, CO16 mi48 minS 710.00 miFair99°F36°F11%1004.5 hPa
Greeley, Greeley-Weld County Airport, CO21 mi48 minSW 1210.00 miFair101°F33°F9%1006.5 hPa

Wind History from FNL (wind in knots)
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Last 24hrE8
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NE7NE9E10E13E12E3NE3W3NW3N7N8CalmCalm4S5SW6S6S13S14S14S12
G24
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1 day agoSE8SW5W6N9N5CalmSE5S3S7SW5SE3SW8N8NW4NW6SE3N5Calm3E10E12E12
G17
E9SE9
2 days agoN8W11
G19
S8SW8SW10SW5SW7SW7SE3E3N8N6N8NE6N4CalmE8NE53E64S5SW6Calm

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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wmap_P
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 (17,4,5,8)
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Ground Weather Radar Station Cheyenne, WY
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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.