Marine Weather and Tides
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 7:10AM||Sunset 4:37PM||Monday December 11, 2017 2:29 AM MST (09:29 UTC)||Moonrise 12:42AM||Moonset 1:15PM||Illumination 45%|
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7 Day Forecast for Marine Location Near Sheridan, COHourly EDIT Help
Area Discussion for - Denver/Boulder, CO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus65 kbou 110446|
area forecast discussion
national weather service denver boulder co
946 pm mst Sun dec 10 2017
Issued at 943 pm mst Sun dec 10 2017
only minor updates at this hour. A few high clouds moving over at
the tail end of the shortwave crossing the northern plains. It
also looks like the colder spots will be a little colder than
forecast, and areas with drainage winds along the foothills possibly
a little warmer.
Short term (this evening through Monday)
issued at 317 pm mst Sun dec 10 2017
mostly clear skies and a dry atmosphere will lead to redevelopment
of strong inversions in low lying areas again tonight. Have
refined the low temps to adjust favored valley locations colder
tonight. Meanwhile, it will remain quite mild along the front
range with light drainage winds.
For Monday, a cold front will bring slight cooling to the plains,
with temperatures a few degrees cooler than those observed today.
However, winds will increase over the northern border and eastern
plains with high fire danger... See fire weather section below.
Long term (Monday night through Sunday)
issued at 317 pm mst Sun dec 10 2017
models continue to show a mild and dry week ahead for colorado.
The strong western u.S. Ridge is forecast to hold its position to
the west of us all week long. By the end of the week the ridge
axis will retrograde from a position over nevada and idaho to a
position over the west coast. This will bring colorado under
stronger northwesterly flow from Wednesday night through Thursday.
The ECMWF shows an initial surge of moisture making its way over
the ridge and into colorado by Thursday morning, but the GFS is
much drier. Will favor the dry GFS solution which doesn't bring
precipitation to colorado until next Saturday, when the upper
ridge is forecast to give way to a more significant trough that|
comes ashore over the pacific northwest. The ECMWF also shows the
passage of a trough next weekend, so the forecast will favor that
solution and mention the chance of snow in the mountains next
Saturday. Until then, surface pressure gradients will be weak
after Monday afternoon, and flow aloft will also be weak under the
anomalously high heights that will dominate the weather pattern.
Temperatures on the plains will be about 10 to 15 degrees warmer
than normal through the week. Conditions in the mountains will
also be mild for december, but not as warm as on the plains.
Mostly clear skies during the overnight hours will allow
temperatures to drop to around seasonal values.
Aviation (for the 06z tafs through 06z Monday night)
issued at 943 pm mst Sun dec 10 2017
vfr through Monday. Some uncertainty about winds at kden kapa in
the afternoon. Most likely light southeast, but there is potential
for north winds gusting as high as 20 knots for a few hours.
Issued at 317 pm mst Sun dec 10 2017
winds will increase across the eastern northern plains behind a
frontal push early Monday morning. Strongest winds with gusts to
30-40 mph will occur along the wyoming border and over the eastern
plains where gradient and winds aloft are strongest. Humidities
bump up just a bit tomorrow with slight cooling and moistening.
However, the stronger winds will be sufficient to produce critical
grassland fire danger so issued a red flag warning for locations
with the strongest winds.
Bou watches warnings advisories
Red flag warning from 11 am to 5 pm mst Monday for coz238-242-
short term... Barjenbruch
long term... Dankers
fire weather... Barjenbruch
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Denver - Centennial Airport, CO||14 mi||37 min||WSW 9||10.00 mi||Fair||38°F||0°F||19%||1025.8 hPa|
|Broomfield / Jeffco, CO||16 mi||38 min||N 0||10.00 mi||Fair||41°F||0°F||17%||1027.4 hPa|
|Buckley Air Force Base Airport, CO||17 mi||32 min||SSW 9||10.00 mi||Fair||38°F||-2°F||17%||1024.2 hPa|
|Erie Municipal Airport, CO||23 mi||30 min||N 0||10.00 mi||Fair||20°F||9°F||62%||1029.5 hPa|
|Denver, Denver International Airport, CO||24 mi||37 min||SSW 7||10.00 mi||Fair||35°F||-4°F||18%||1024.4 hPa|
Wind History from APA (wind in knots)
|1 day ago||SW||SW||SW||SW||SW||SE||W||Calm||W||N||N||E||S||SW||S||SE||S||S||S||S||SE|
|2 days ago||W|
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Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of CentralPlains EDIT
Wind Forecast for Denver/Boulder, CO (4,6,7,8)(on/off)  Help
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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 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.