Marine Weather and Tides
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.
|Sunrise 6:26AM||Sunset 7:34PM||Saturday April 10, 2021 9:45 PM MDT (03:45 UTC)||Moonrise 6:13AM||Moonset 6:20PM||Illumination 1%|
7 Day Forecast for Marine Location Near Brighton, COHourly EDIT Help
Area Discussion for - Denver/Boulder, CO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KBOU 110238 AFDBOU
Area Forecast Discussion National Weather Service Denver/Boulder CO 838 PM MDT Sat Apr 10 2021
UPDATE. Issued at 835 PM MDT Sat Apr 10 2021
No big changes needed to the forecast at this time. Increased the winds slightly overnight over the mountains and foothills due to the pre-frontal gradient tightening. Cross-sections showing 50 kts at mountain top, however not too much decrease in speed as you move up in elevation, so should not see too much of a mountain wave set up for the stronger winds to be pushed to lower elevations. Also increased cloud cover just slightly for some mountain wave clouds, and adjusted wind speeds and direction slightly for the cold front passage tomorrow morning. Should slide down into the metro area between 7-9 AM.
SHORT TERM. (This evening through Sunday) Issued at 216 PM MDT Sat Apr 10 2021
The upper level ridge that brought the mild temperatures and dry conditions today will slide off to the east as and upper level trough passes north of Colorado on Sunday. This will bring a cold front into northern Colorado around sunrise Sunday morning. It quickly tracks southward bringing gusty north/northeast winds and cooler temperatures. Ahead of the front, it will be mild tonight with lows in the 30s across northeast Colorado. Highs Sunday afternoon will be about 10-15F cooler than today. Moisture will be limited behind the front. By afternoon, some mid level clouds are expected to form. Doesn't appear there will be enough moisture for any precipitation.
LONG TERM. (Sunday night through Saturday) Issued at 216 PM MDT Sat Apr 10 2021
Cool unsettled weather is expected through much of the period as an upper level trough moves across the Western U.S. and a moist and cool airmass settles in across eastern Colorado.
Sunday night and Monday, Colorado will be under the influence of a moderate westerly flow aloft with cool and dry weather across the CWA. There may be just enough mid level moisture available to produce a few light snow showers across the high country.
Monday night and Tuesday, low level moisture and upslope flow increase east of the mountains as the surface gradient between high pressure over the Central Plains States and lower pressure over western Colorado tightens. In addition, models are showing weak QG lift associated with the upper level low over the region as well. As a result, colder temperatures and increased precipitation chances are expected across North Central and Northeast Colorado. Temperatures look cold enough to see some snow across much of the area including Metro Denver and the Front Range Urban Corridor. Any snow that falls should generally melt as it falls with some light accumulation possible mainly on grassy surfaces. The Palmer Divide and especially the foothills should see more accumulation due to colder temperatures. Further east across the far northeast plains little to no precipitation may fall due to limited surface moisture,
The cool and showery weather should continue through the end of the work week as the overall pattern remains similar. The best chance for precipitation may be from Wednesday night through Thursday as QG lift associated with a 100KT+ upper jet over southern Colorado increases. In addition, there may be enough instability available for some thunder during this period as well. By Saturday, models are showing the upslope flow diminishing with slightly warmer temperatures and lesser precipitation chances.
AVIATION. (For the 00Z TAFS through 00Z Sunday evening) Issued at 835 PM MDT Sat Apr 10 2021
Winds will be a bit squirrelly over the next hour as we head into a normal southerly drainage direction this evening, by 04z at the latest. KBJC could see some gusty west winds overnight however the stronger winds should stay up at higher elevations. A cold front will cause winds to shift to the northeast around 13Z Sunday. Winds will remain a northeast to east direction through Sunday. Mid level clouds (6000 to 10000 ft) will form behind the front after 18Z Sunday until about 02Z Monday, otherwise mostly clear skies are expected.
BOU WATCHES/WARNINGS/ADVISORIES. None.
UPDATE . Kriederman SHORT TERM . Meier LONG TERM . Kalina AVIATION . Kriederman
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
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|Denver, Denver International Airport, CO||8 mi||52 min||ESE 8||10.00 mi||A Few Clouds||54°F||12°F||19%||1003.5 hPa|
|Buckley Air Force Base Airport, CO||15 mi||47 min||N 6||10.00 mi||A Few Clouds||53°F||11°F||18%||1004 hPa|
|Erie Municipal Airport, CO||16 mi||50 min||WSW 3||10.00 mi||Fair||55°F||11°F||17%||1006.8 hPa|
|Broomfield / Jeffco, CO||19 mi||58 min||WNW 12||10.00 mi||A Few Clouds||57°F||10°F||15%||1007.8 hPa|
Link to 5 minute data for KDEN
Wind History from DEN (wind in knots)
|1 day ago||SE||W||W||N||E||S||E||E||E||E||NE||N|
|2 days ago||NW||W||W||S||W||W||E||N||NW||SW||SW||W||NW|
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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