Sunday, August9, 2020
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Marine Weather and Tides
Brighton, 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 6:04AMSunset 8:04PM Sunday August 9, 2020 5:12 AM MDT (11:12 UTC) Moonrise 11:21PMMoonset 11:48AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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 Brighton, CO
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location: 39.94, -104.76     debug


Area Discussion for - Denver/Boulder, CO
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FXUS65 KBOU 090951 AFDBOU

Area Forecast Discussion National Weather Service Denver/Boulder CO 351 AM MDT Sun Aug 9 2020

SHORT TERM. (Today and tonight) Issued at 350 AM MDT Sun Aug 9 2020

Light westerly flow aloft will bring even drier air over our area today. Temperatures will be slightly warmer, mainly just a recovery from the slight cooling we had on the plains yesterday. Current forecast has Denver near the record high of 98, and this still looks good. With drier air, convection should be limited to a shallow cloud deck. Some models have hints of showers south of I-70 or on the eastern border this evening, but these will likely produce virga.

We should have some near surface smoke around Denver from yesterday's burning on the Pine Gulch fire near Grand Junction. This should move eastward and become more diffuse as the morning goes on, as it did yesterday. Another elevated plume should be moving over the central/northern mountains by sunset as this cycle repeats. The low to mid level flow is gradually becoming more W or WNW which will keep this smoke coming more toward Denver over the next few days, instead of north of the city as it has been.

A weak cold front will slip southward over the plains late tonight. We dropped lows tonight on the plains a little as it looks like the cooling will come a few hours faster.

LONG TERM. (Monday through Saturday) Issued at 350 AM MDT Sun Aug 9 2020

A hot and mostly dry pattern will persist through much of the period. High temperatures on Monday will be near normal following the passage of a cold front late tonight. After that, back to the 90s into next weekend. As far as thunderstorms are concerned, there will be a slight chance of storms over the higher terrain on Monday afternoon, with isolated late day thunderstorms over the northeast plains. Storms across the plains may struggle a bit more with a slightly cooler post-frontal airmass in place. On Tuesday however, there may be a better chance of storms east of the urban corridor. A dry westerly flow aloft will likely mix out the moisture along the urban corridor. Further east however, much higher dewpoints will result in some sort of dryline developing in the afternoon. Forecast soundings for Denver not very impressive, but MU CAPE values look pretty good over the northeast plains, ranging from 1500-2500 j/kg. PWAT values will be 1.0-1.1 inch as well, so a few locations could see locally heavy rainfall. SPC has placed the eastern plains in a marginal risk for Tuesday. Hail up to 1 inch and wind gusts to 60 mph would be the main threats. Wednesday through Friday, the drier westerly flow aloft will result in isolated high based thunderstorm coverage over the mountains in the afternoon, with a slight chance over the far eastern plains in the late afternoon and evening. Not much for the urban corridor to work with as downslope mixes out the low level moisture. By the weekend, the upper level ridge that is forecast to stretch across the Desert Southwest and South Central Plains this week, is progged to shift more to the west build over central NV. This will result in a northwesterly flow over northern CO. Subtropical moisture that is expected to be limited through the week, will increase as well. This could result in a better chance of afternoon and evening thunderstorms Saturday into Sunday.

AVIATION. (For the 06Z TAFS through 06Z Sunday night) Issued at 350 AM MDT Sun Aug 9 2020

VFR through tonight with winds under 12 knots. There will be some diffuse smoke in the Denver area this morning, then a plume above 14,000 ft MSL over the mountains west of the city after 22z. This should not limit visibilities at the Denver terminals, but could have minor impact on slant visibility.

FIRE WEATHER. Issued at 350 AM MDT Sun Aug 9 2020

Little change today, with hot and dry conditions. There will be afternoon breezes in the high mountains and mountain valleys similar to the last couple of days.

For the upcoming week, elevated fire danger will continue with the dry conditions and low relative humidities. The wind however, will be on the lighter side through the period. The driest conditions will be in the mountains and adjacent plains with slightly higher humidities across the far eastern plains.

BOU WATCHES/WARNINGS/ADVISORIES. None.

SHORT TERM . Gimmestad LONG TERM . Cooper AVIATION . Gimmestad FIRE WEATHER . Gimmestad/Cooper


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Denver, Denver International Airport, CO8 mi19 minSW 1010.00 miMostly Cloudy69°F33°F26%1009.5 hPa
Buckley Air Force Base Airport, CO15 mi74 minSSW 710.00 miPartly Cloudy64°F34°F33%1011.6 hPa
Erie Municipal Airport, CO16 mi18 minS 310.00 miFair58°F31°F37%1018.6 hPa
Broomfield / Jeffco, CO19 mi18 minN 010.00 miFair70°F26°F20%1020.3 hPa

Link to 5 minute data for KDEN

Wind History from DEN (wind in knots)
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Last 24hrW6S7SW7SW65NW7NW9
G18
NW7NW5SE456W9S8S8S7S11S10S8SW10SW10SE3SW8SW10
1 day agoSW14SW16SW14SW16
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SW7W53Calm3E7
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NE5--NE3E6E8SE11SE9S11SE3N4NW11W6SW8SW8
2 days agoSW6W4SE3CalmSW34Calm4W12
G18
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E12S10S8S9SE8E6SE3E6S10SW6SW10S9S16
G26

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_P
GEOS Local Image of    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 (7,2,3,4)
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Ground Weather Radar Station Denver/Boulder, CO
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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.