Thursday, October1, 2020
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Marine Weather and Tides
Englewood, CO

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:55AMSunset 6:43PM Thursday October 1, 2020 5:10 PM MDT (23:10 UTC) Moonrise 6:04PMMoonset 5:34AM Illumination 100% Phase: Full Moon; Moon at 15 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 Englewood, CO
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location: 39.68, -105     debug


Area Discussion for - Denver/Boulder, CO
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FXUS65 KBOU 012041 AFDBOU

Area Forecast Discussion National Weather Service Denver/Boulder CO 241 PM MDT Thu Oct 1 2020

SHORT TERM. (This evening through Friday) Issued at 1230 PM MDT Thu Oct 1 2020

The high amplitude ridge continues to be over the western portion of the CONUS with northwest upper level flow over the region. Temperatures were slightly cooler today behind a cooler flow of easterly winds on the surface in the post-frontal airmass. Dry conditions will continue through Friday with a gradual increase in temperatures as 700 mb temps approach +8-9.5C but still hovering around seasonal normals. The bigger impacts will continue to be the smoke produced by the Cameron Peak and Mullen fires in Larimer county and just across the border in Wyoming. Current wind patterns and HRRR smoke models show another day of extensive smoke cover over the northern and central foothills as well as the lower elevations of I-76 and south. A mixture of near-surface and elevated smoke could hinder some increase in temperatures tomorrow afternoon as well as provide hazardous air quality conditions for sensitive groups.

LONG TERM. (Friday night through Thursday) Issued at 1230 PM MDT Thu Oct 1 2020

No significant changes to the long term. Main theme is continued dry conditions with above normal temperatures and persistent elevated fire danger. Areas of smoke will continue to be an issue at times in the mountains, foothills and adjacent plains. On the synoptic scale, a ridge of high pressure will remain over the west coast, with a northwesterly flow over CO. A short wave trough is expected to pass to drop into the Midwest Friday night into Saturday morning. There is the potential of an isolated shower over the far northeast plains Friday evening as a weak cold front pushes across the area, but that is basically it. Temperatures on Saturday will drop back into the mid/upper 60s. By Sunday however, temperatures will climb back into the 70s. The flow aloft will weaken on Sunday, as the flow aloft transitions to west/northwesterly component. On Monday, the wind will increase over the region and warms up as a weak lee trough over eastern CO generates an additional downslope component along the Front Range. A weak front then pushes across the region late Monday/Monday night but no real impact from this feature aside from a brief period of gusty winds. Tuesday through Thursday, the ridge will spread over the central Rockies. Temperatures will remain above normal with generally lighter winds under the ridge axis.

AVIATION. (For the 18Z TAFS through 18Z Friday afternoon) Issued at 1230 PM MDT Thu Oct 1 2020

Smoke from several wildfires will continue to move across the Denver area through Friday afternoon. Most of the smoke is expected to be elevated during the day, though slant visibility will be impacted. There will be areas of ILS/MVFR visibilities over the mountains northwest of Denver, and these lower visibilities will become more likely around Denver tonight. Some elevated smoke could cause a SCT to BKN deck over area terminals through the evening. Winds will remain light through the period with speeds generally staying under 10kt.

FIRE WEATHER. Issued at 1230 PM MDT Thu Oct 1 2020

There will be elevated fire danger through the middle of next week with continued dry and warm conditions. The biggest potential for red flag conditions will be Monday with stronger winds and very low humidities over mountains, mountain valleys and elevated terrain. Otherwise, the wind will be light which will help slightly offset the persistently dry conditions. Areas of smoke will continue to impact the mountains, foothills and adjacent plains as well.

BOU WATCHES/WARNINGS/ADVISORIES. None.

SHORT TERM . Bowen LONG TERM . Cooper AVIATION . Bowen FIRE WEATHER . Cooper


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Denver - Centennial Airport, CO12 mi17 minNE 510.00 miA Few Clouds66°F27°F23%1024.2 hPa
Buckley Air Force Base Airport, CO14 mi12 minE 410.00 miPartly Cloudy66°F26°F22%1023.6 hPa
Broomfield / Jeffco, CO17 mi25 minE 510.00 miA Few Clouds with Haze64°F28°F26%1027.4 hPa
Denver, Denver International Airport, CO22 mi17 minVar 410.00 miPartly Cloudy66°F27°F23%1022.6 hPa
Erie Municipal Airport, CO23 mi15 minSSE 310.00 miFair66°F28°F24%1026.4 hPa

Link to 5 minute data for KAPA

Wind History from APA (wind in knots)
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Last 24hrNE11NE5E5S5CalmS4E5CalmCalm4CalmS3CalmSE4CalmSE3CalmCalmS3N6SE64NW6NE5
1 day agoSE6SE6S6W5SW6W9W8W8W8S7SE3E5E4W7SW4SW6NE10
G14
NE7NW8N7--NE7CalmN7
2 days agoN7NE3SW3SW4S6S8S7SE3S5S5S6S5S5CalmSE3CalmCalmW43E54E8NE64

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
Ground Weather Radar Station Denver/Boulder, CO
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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.