Thursday, August6, 2020
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Marine Weather and Tides
Nunn, CO

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:01AMSunset 8:10PM Thursday August 6, 2020 6:45 PM MDT (00:45 UTC) Moonrise 10:10PMMoonset 8:51AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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 061849 AFDBOU

Area Forecast Discussion National Weather Service Denver/Boulder CO 1249 PM MDT Thu Aug 6 2020

SHORT TERM. (This evening through Friday) Issued at 1231 PM MDT Thu Aug 6 2020

Water vapor satellite imagery showing very dry air over the Great Basin and Desert southwest. Southwest flow around the upper level ridge center over the region will transport this drier air into Colorado. However, ahead of it, there will be one last round of afternoon and early evening showers and thunderstorms. The airmass has dried a little already along the Front Range and near by plains. Because of this, MLCAPE is less the 500 J/kg. These storms will be capable of brief moderate to heavy rain and gusty outflow winds to 50 mph. As these storms progress eastward, they will encounter better moisture that resides east of a surface trough. Here, MLCAPE is around 1500 J/kg. Weak shear should keep most of these storms sub- severe, but heavy rain, small hail, and gusty outflow winds will accompany the stronger storms. Can't rule out a couple brief severe storms with large hail and wind gusts to 60 mph. The convection continues to progress eastward through the evening will be east of the state by midnight.

Skies will clear overnight as the drier air spreads across the state. On Friday, clear to mostly clear skies will prevail through the day. With precipitable water values less than a half inch, don't expect any showers and thunderstorms during the afternoon. At best, expect a few to scattered high based cumulus clouds. Because of the drier airmass and increased sunshine, expected warmer temperatures. Highs across northeast Colorado should reach the mid to upper 90s.

LONG TERM. (Friday night through Thursday) Issued at 1231 PM MDT Thu Aug 6 2020

The longer term is going to be characterized with hot and mainly dry conditions through the early part of next week. Temperatures will be in the 90s across the plains with only slight chances of late day storm, mainly mountains and far northeast plains.

Colorado will return to a drier west and southwest flow aloft with high pressure ridge aloft covering much of the southern portions of the United States. Friday evening looks completely dry across the county warning area with mainly clear skies.

For Saturday, mostly dry, though the NAM showing a weak frontal boundary which may flirt across the far northeast plains with a bit higher low level moisture there. Park county may be the other area which has a shot of a late day storm with a some increase in moisture from the southwest. If showers do develop over the mountains expect mainly high based showers with gusty winds the main threat. Sunday looks very similar to Saturday with only an ever so slight chance for a late day storm in mountains south of Interstate 70 corridor.

Not much change into the middle of next week with light westerly flow with only slight chance of late day storms and continued very warm to hot conditions. Possibly a bit better moisture available towards the end of next week with better moisture available with more favorable flow from the southwest.

AVIATION. (For the 18Z TAFS through 18Z Friday afternoon) Issued at 1231 PM MDT Thu Aug 6 2020

Scattered showers and thunderstorms will continue form and track eastward this afternoon. Gusty outflow winds, brief moderate to heavy rain, and small hail are expected with the strongest storms. A couple wind shifts due to the gusty outflow winds are expected. The showers and storms should push east of the Denver area by 00Z with southeast winds prevailing behind the convection. Winds eventually become southerly by 06Z. For Friday, mostly clear skies are expected due to a very dry airmass.

FIRE WEATHER. Issued at 1231 PM MDT Thu Aug 6 2020

Very warm and dry conditions will prevail this afternoon and again Friday afternoon. Relative humidities are expected to bottom out in the 5 to 12 percent range over the mountains and mountain valleys. Winds in the 500-700mb layer still less than 20 knots each day, so expect wind gusts to stay below the 25 mph need for Red Flag criteria. A few gusts to 30 to 40 mph will be possible with the showers and thunderstorms this afternoon. For Friday, no showers or storms are expected due to the very dry airmass.

There will be elevated fire danger over the weekend with dry conditons over North and Middle Parks but lack of any strong winds will keep conditions at a manageable level with afternoon breezes mainly around/under 20 mph.

BOU WATCHES/WARNINGS/ADVISORIES. None.

SHORT TERM . Meier LONG TERM . Entrekin AVIATION . Meier FIRE WEATHER . 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 mi49 minSSE 11 G 1810.00 miFair86°F50°F29%1007.5 hPa
Greeley, Greeley-Weld County Airport, CO21 mi49 minESE 510.00 miFair90°F46°F23%1008.8 hPa

Link to 5 minute data for KFNL

Wind History from FNL (wind in knots)
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Last 24hrE9E7E4NE5N7N8NE6N7N3N7CalmCalmN4N3Calm3S4S4SE6E7S12W11SW5SE11
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1 day agoN3NW3E3NE14E8W9N9N6CalmS7S5NW3SW4SW7S5E45SE94N3N14
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2 days agoS6E7E10E10
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E9N4NE4NE8N6N4SE4CalmCalmNE9NE5NE8NE9E634E4S9E18
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NW7

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 Denver/Boulder, CO (20,4,5,8)
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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 numerous 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.