Marine Weather and Tides
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 7:11AM||Sunset 4:37PM||Sunday December 15, 2019 3:01 PM MST (22:01 UTC)||Moonrise 9:22PM||Moonset 11:20AM||Illumination 82%|
7 Day Forecast for Marine Location Near Foxfield, COHourly EDIT Help
Area Discussion for - Denver/Boulder, CO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KBOU 152035 AFDBOU
Area Forecast Discussion National Weather Service Denver/Boulder CO 135 PM MST Sun Dec 15 2019
SHORT TERM. (This evening through Monday) Issued at 135 PM MST Sun Dec 15 2019
What is left of a weak upper level trough will move across southern Colorado tonight. Moisture associated with this system will continue to produce some light snow over the southern part of the forecast area. The best chance of snow will remain mainly south of Interstate 70. For Denver, there will be a slight chance of snowfall until around 8 am Monday morning. On Monday increasing mid and upper level stability will develop behind the exiting trough. The flow aloft will be dry, weak and northwesterly for Monday afternoon. Continued cooler than normal temperatures but more sunshine especially in the afternoon.
LONG TERM. (Monday night through Sunday) Issued at 135 PM MST Sun Dec 15 2019
By Monday evening, the upper trough will have shifted southeast bringing Colorado into northwest flow aloft. Weak moisture embedded in the flow could bring some light snow to the northern mountains overnight into Tuesday with little to no additional accumulation expected. Levels will dry out Tuesday with an upper ridge building in to the region. This dry period will last through Wednesday with temperatures warming into the mid 50s on the plains with the help of increased downslope warming provided by a lee side low.
A trough will be across southern ID and UT and will progress eastward into central Colorado by Thursday afternoon. Models are not excited with this system as moisture seems to be lacking. Will maintain a slight chance of snow over the higher elevations of the northern and central mountains while keeping the plains dry. Temperatures will drop around 5-8 degrees from Wednesday under mostly cloudy conditions. Model cross-sections show winds increasing across the higher elevations with speeds up to 45 mph possible.
Behind the exiting trough upper level ridging will build in bringing dry and warming conditions through Monday. Highs could reach 10 to 15 degrees above normal by the weekend.
AVIATION. (For the 18Z TAFS through 18Z Monday afternoon) Issued at 135 PM MST Sun Dec 15 2019
Overall expected VFR conditions through midday Monday. There is the potential for light snow until around 15z Sunday, but much of this should remain south of the terminals. If it does slip further north, then could see some ILS restrictions with broken ceilings 040-050. Generally light winds (under 10 kts) shifting to a southerly drainage overnight, then southwest/west on Monday.
BOU WATCHES/WARNINGS/ADVISORIES. None.
SHORT TERM . Cooper LONG TERM . Bowen AVIATION . Cooper
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. Follow links for more data.
|Denver - Centennial Airport, CO||6 mi||68 min||NE 5||10.00 mi||Mostly Cloudy||29°F||12°F||49%||1014 hPa|
|Buckley Air Force Base Airport, CO||7 mi||63 min||ENE 6||10.00 mi||Mostly Cloudy||28°F||13°F||54%||1012.4 hPa|
|Denver, Denver International Airport, CO||16 mi||68 min||Var 5||10.00 mi||Mostly Cloudy||31°F||14°F||49%||1011.9 hPa|
|Denver Nexrad, CO||17 mi||66 min||ENE 7||10.00 mi||Overcast||32°F||15°F||51%||1010.5 hPa|
Link to 5 minute data for KAPA
Wind History from APA (wind in knots)
|1 day ago||NW|
|2 days ago||Calm||Calm||W||W||NE||SE||Calm||SW||E||SW||S||SW||SW||SW||E||W|
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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 (17,4,5,8)(on/off)  Help
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