Thursday, January20, 2022
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Marine Weather and Tides
Foxfield, CO

Version 3.4
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3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 7:14AMSunset 5:06PM Thursday January 20, 2022 4:53 PM MST (23:53 UTC) Moonrise 8:53PMMoonset 10:13AM Illumination 88% Phase: Waning Gibbous; Moon at 18 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 Foxfield, CO
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location: 39.64, -104.8     debug


Area Discussion for - Denver/Boulder, CO
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FXUS65 KBOU 202141 AFDBOU

Area Forecast Discussion National Weather Service Denver/Boulder CO 241 PM MST Thu Jan 20 2022

SHORT TERM. (This evening through Friday) Issued at 240 PM MST Thu Jan 20 2022

The western portion of the Stratus field is slow in dissipating this afternoon. It gone over the northeast and southeast CWA. It is slow to leave Weld, eastern Boulder and eastern Larimer Counties. There are not any observations reporting fog over CWA. Winds remain quite light across all of the CWA this afternoon.

Models show brief upper ridging for the CWA later this afternoon and all of tonight. By 12Z Friday morning, through day, an upper tough is over Utah. By 00Z late Friday, there is a closed low circulation at the bottom of the trough right over the Gran Canyon. The flow aloft for the CWA will be moderate in speed and west-southwesterly in direction all of Friday. A cold front with upslope flow is progged to move across the plains around 16Z/17Z Friday morning. Decent north-northeasterly upslope flow moves in behind it.

Moisture increases after the upslope kicks in with cross sections indicated pretty deep moisture Friday mid morning through late afternoon. The QPF fields are not very excited, with limited measurable snowfall indicated over most of the CWA. The highest accumulations look to be in foothills, but nothing significant. No highlights. Friday's high temperatures look pretty close to this afternoon's readings; perhaps a smidgen cooler.

LONG TERM. (Friday night through Thursday) Issued at 142 PM MST Thu Jan 20 2022

The trough responsible for Fridays snow will have pretty much cut off by early Saturday, and shifted due south into the lower Colorado River valley. The best forcing will be over the southern half of Colorado, with very weak winds overhead given our area will be between the cutoff trough and the polar jet well to the north. Thus, there with northeast flow about the only areas that may see lingering snow late Friday/early Saturday would be the Palmer Divide and southwest foothills in Jefferson/Park/Douglas Counties. Will keep snow in the forecast until just past midnight before the upslope weakens and drier air moves in. Saturday should be dry across the area with a warming trend as 700 mb temps warm 5-7 degC throughout the day. There is a weak pressure gradient in place at the surface as well, leading to weak winds just about everywhere. Highs should reach the low to mid 40s across the plains but the weak winds in in mountain valleys will keep the inversions in place, with highs only in the 20s.

Sunday the same pattern remains with Colorado in the "doldrums" at 500 mb with the cutoff low well to the southwest and the northwesterly polar jet across the Dakotas. Even drier air moves in, along with a little bit of warming at all levels. South to southwest low-level flow east of the Rockies will help warm temperatures into the 50s across the plains. There is still not much wind to scour our mountain valley inversions, but with continued warming at 700 mb and plenty of sunshine, they could reach the low 30s for highs.

By Monday the cutoff low finally works it's way into Texas and Oklahoma, and northwest flow aloft will return to Colorado. Significant model differences exist with the timing and strength of the potential short wave troughs embedded in the northwest flow. In general the EC ensemble solutions are slower than the GEFS, and the GEFS has a further west trough which would include better snow in the mountains. Both solutions point to a late Monday cold front. Assuming the front is later in the day, highs should reach the mid 40s across the plains, but continued cold in the mountain valleys with high in the 20s to around 30. Any precipitation across the plains should hold off until after the frontal passage with PoPs increasing for overnight and through Tuesday. The flow pattern with northeast low-level flow behind the front and northwest flow aloft and with some QG lift favors the Front Range mountains and southwest foothills, as well as the Palmer Divide, though a lot can and probably will change as we get closer. The strength and longevity of the east to northeast upslope alone makes this forecast look a little better for snow for the plains and eastern foothills compared to anything we had/will have this week.

The middle of next week should see northwest or even northerly flow aloft and dry conditions across the east slope foothills and all of the plains. No significant troughs look to pass overhead but light mountain snow is possible with close to average temperatures for late January.

AVIATION. (For the 18Z TAFS through 18Z Friday afternoon) Issued at 240 AM MST Thu Jan 20 2022

The low clouds are slow in leaving northeast Colorado this afternoon. In fact, the Stratus field is not to far north of DIA at this time. All the models, including the high resolution varieties have no low clouds at DIA the rest of this afternoon or overnight tonight. The ceilings could get under BKN-OVC030 on Friday afternoon with the next system. For winds, models get drainage going at DIA by 03Z or 04Z this evening. There is cold front to push into the airport around 17Z Friday morning with upslope flow behind it. Some light snow could fall at DIA Friday afternoon. Accumulations would be minimal.

BOU WATCHES/WARNINGS/ADVISORIES. None.

SHORT TERM . RJK LONG TERM . Schlatter AVIATION . RJK


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Denver - Centennial Airport, CO6 mi3 hrsNNW 410.00 miFair43°F13°F29%1019 hPa
Buckley Air Force Base Airport, CO7 mi3.9 hrsN 010.00 miA Few Clouds40°F12°F31%1022.5 hPa
Denver, Denver International Airport, CO16 mi3 hrsNE 910.00 miA Few Clouds38°F28°F68%1021.9 hPa

Link to 5 minute data for KAPA

Wind History from APA (wind in knots)
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Last 24 hrE7E7E4E6SE3S30NW3SW6SW4S3S30SW300SE4S3S7S70N4W3N7
1 day ago3E9SE7W5W4W40SE3S4N10NW10N8N8NE4NE5NE3E3E7----N8NE8N8E5
2 days agoE6SE4S7S5SE4SE5SE5S4S4S4S4SE5SE5S4S43SE4S40E3SW3SW40NE3

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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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