Saturday, September23, 2017 L-36.com


Marine Weather and Tides
Denver, CO

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:47AMSunset 6:54PM Saturday September 23, 2017 4:54 AM MDT (10:54 UTC) Moonrise 10:08AMMoonset 9:11PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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 Denver, CO
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location: 39.76, -104.88     debug


Area Discussion for - Denver/Boulder, CO
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Fxus65 kbou 230324
afdbou
area forecast discussion
national weather service denver boulder co
924 pm mdt Fri sep 22 2017

Update
Issued at 924 pm mdt Fri sep 22 2017
the airmass does not have enough instability to support
thunderstorms this evening, so will remove the mention from the
forecast. An initial frontal boundary has moved over the northeast
plains this evening with a few weak showers moving northward on
the strong southerly flow aloft. Any rainfall amounts have been
light. With the upper jet aloft over the state, the light
rainshowers will continue overnight. No other changes to the
forecast are necessary at this time.

Short term (this evening through Saturday)
issued at 318 pm mdt Fri sep 22 2017
an upper level trough spinning over the great basin and northern
rockies will slowly shift eastward tonight and Saturday. Airmass
has becomes unstable over the mountains and nearby plains this
afternoon ahead of the upper level trough. Expect isolated to
scattered showers and storms to move across the higher terrain
through early evening. These storms will be quick moving due to
the strong flow aloft. Brief heavy rain, small hail, and wind
gusts to 50 mph will be possible with the thunderstorms. A cold
front will drop south across the eastern plains late this
afternoon and evening. Moisture will increase behind it. Expect a
few showers and storms to move onto the plains late this
afternoon and evening.

A moist east to southeast low level flow will bring cool and
cloudy conditions Saturday. Models show an area of rain over the
eastern plains during the late morning and afternoon associated
with the right entrance region of the jet. Will have 60-80 pops in
this area. Expect lighter precipitation for the higher terrain
and front range. Models have a large difference with temperatures
for Saturday. The NAM is showing upper 40s and lower 50s while the
gfs shows 60s for northeast colorado. Will lean towards the
cooler NAM because of the expected cloud cover, but will not go as
cold.

Long term (Saturday night through Friday)
issued at 145 pm mdt Fri sep 22 2017
the upper low will bottom out over southern utah by early Sunday
morning providing moderate QG ascent over much of northern
colorado. Will have likely pops for much of the area Saturday
night and Sunday with the highest pops over the eastern plains.

The moisture further west is more shallow as mid levels are
rather dry with the strong southwest flow aloft. Some light snow
expected over higher elevations in the mountains, mainly above
9500 feet. The low will then begin to slowly weaken and lift out
into wyoming on Monday. However more troughiness will drop back
into the mean trof position through much of next week. Temperatures
will remain below normal for much of next week with a continued
chance of showers.

Aviation (for the 06z tafs through 06z Saturday night)
issued at 924 pm mdt Fri sep 22 2017
northerly surface flow at low levels will continue overnight
ceilings will remainVFR overnight, but will be lowering to 2000
to 4000 feet by 18z. Rain showers will develop through the
afternoon, with a slight chance of an embedded thunderstorm also
developing.

Fire weather
Issued at 924 pm mdt Fri sep 22 2017
red flag warning has been allowed to expire, and cooler air is now
moving in from the south. Rain shower will be gradually increasing
overnight and through Saturday, bringing an end to the high fire
danger levels for the forseeable future.

Bou watches warnings advisories
None.

Update... Dankers
short term... Meier
long term... Entrekin
aviation... Dankers
fire weather... Dankers


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Buckley Air Force Base Airport, CO7 mi1.9 hrsENE 410.00 miMostly Cloudy49°F40°F74%1009 hPa
Denver, Denver International Airport, CO13 mi62 minN 610.00 miMostly Cloudy49°F39°F69%1009.4 hPa
Denver - Centennial Airport, CO14 mi62 minNNE 410.00 miMostly Cloudy50°F37°F63%1010.4 hPa
Broomfield / Jeffco, CO16 mi64 minN 510.00 miPartly Cloudy48°F35°F62%1015.6 hPa
Denver Nexrad, CO18 mi59 minN 410.00 miMostly Cloudy48°F42°F82%1015.6 hPa
Erie Municipal Airport, CO19 mi59 minN 010.00 miPartly Cloudy47°F37°F72%1017.3 hPa

Wind History from BKF (wind in knots)
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Last 24hrS11W7NW5NE5NE4N3N4NW10N6
G14
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G15
NW13NW15NW13N15
G20
NW13NW11NW5NW9N13NW6N5NE6E4NW3
1 day agoS11S12S14S13S16S15
G19
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S9
G20
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G25
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G29
S17SE11S10S11S10
2 days agoSE15E15E15SE16SE14S155SW9
G15
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S11
G18
S6S12S15S19
G25
S16S13S20
G25
S19S17S18S16S11S12S8

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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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralPlains    EDIT
Geos

Wind Forecast for Denver/Boulder, CO (6,6,7,8)
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Ground Weather Radar Station Denver/Boulder, CO
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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.