Sunday, January17, 2021
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Marine Weather and Tides
Eagle, CO

Version 3.4
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8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:17AMSunset 5:04PM Sunday January 17, 2021 3:11 AM MST (10:11 UTC) Moonrise 10:26AMMoonset 10:02PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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 Eagle, CO
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location: 39.63, -106.82     debug


Area Discussion for - Grand Junction, CO
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FXUS65 KGJT 170539 AFDGJT

Area Forecast Discussion National Weather Service Grand Junction CO 1039 PM MST Sat Jan 16 2021

SHORT TERM. (Tonight through Sunday night) Issued at 223 PM MST Sat Jan 16 2021

As expected, the shortwave that brought the mostly light snow to the mountains has quickly moved off to the east with only some flurries remaining, and those are far and few between. For now, the upper level jet is moving from north to south causing enough lift for some high clouds, especially up north. The rest of the CWA is seeing a partly cloudy day with some fairly warm temperatures being reported.

Synoptically, a large area of high pressure remains set up just to the west of the southern Cali coast while a deep low moves from the Ohio River Valley up into New England. This places our CWA in some northwesterly to northerly flow through early Monday morning. During the day Sunday, another trough sets it sights on the CWA albeit a bit stronger than the one we saw move through last night. For Sunday then, south of I-70, mostly sunny skies expected while areas north will see a few more clouds, especially along the WY border. As the trough approaches, we can expect some snow for the usual suspects..the Park Range, Flat Tops, Elks, and Sawatch Ranges. The snow will begin around 9PM, give or take, and continue through Monday morning . 2 to 5 inches looks a safe bet for now. The evolution of this wave gets interesting as we head into the start of the work week Lots of moving parts.

LONG TERM. (Monday through Saturday) Issued at 223 PM MST Sat Jan 16 2021

An increasingly amplified and blocky pattern in the mid and high latitudes will result in a challenging long term forecast next week. Various ensemble teleconnection indices favor a negative NAO, a neutral PNA becoming negative, and an EPO that is also neutral becoming negative. Taken altogether, this leads to next week's mean 500mb pattern featuring a strengthening East Pacific and Aleutian ridge (-EPO), a trough over the western CONUS (-PNA) and a highly anomalous ridge over Greenland (-NAO). In terms of sensible weather, a return to stormy and active weather is likely, particularly Monday into Tuesday and again late in the week into next weekend.

Starting with Monday into Tuesday, a strong, positively tilted trough over California will dig southward into the eastern Pacific Ocean / Baja California. Meanwhile, another strong positively tilted shortwave trough will dig southward from the Pacific Northwest and close off over the Great Basin. By Tuesday, these two system will merge, forming one very large closed mid-level low just off the coast of southern California. Initially, northwest upslope flow will favor the northern mountains of Colorado on Monday with 2 to 4 or 3 to 6 inches of snow likely. As we head into Tuesday (and perhaps Wednesday), however, mid-level flow will switch out of the south and southwest as our two aforementioned systems merge. Diffluent flow coupled with more moisture to tap into will lead to the San Juans and portions of the central mountains becoming the favored ranges for more significant precipitation. While we're still several days away, confidence is increasing for a substantial winter storm with the potential for snow accumulations of a foot or more. This system is certainly one we'll be monitoring closely over the next few days.

Snow may linger into Wednesday, but current model consensus shuts off most if not all precipitation by Thursday as the closed low opens up into a wave and treks eastward across the southern Four Corners and into the southern Plains. If this process is slower to occur . or tracks farther north . precipitation may extend longer into the middle of next week for the San Juans. For now, we're leaning towards a drier solution. After that, the next period we're watching is Friday into the weekend, where yet another closed, moisture-laden storm is in the pipeline.

AVIATION. (For the 06Z TAFS through 06Z Sunday night) Issued at 1037 PM MST Sat Jan 16 2021

Expect VFR conditions for the next 24 hours as some high cirrus drifts overhead from the north overnight into the day on Sunday. No precipitation expected with CIGS above ILS breakpoints. Winds will remain light and terrain driven.

GJT WATCHES/WARNINGS/ADVISORIES. CO . None. UT . None.

SHORT TERM . TGR LONG TERM . MDM AVIATION . MDA


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Eagle County Regional, CO6 mi76 minE 710.00 miOvercast23°F17°F78%1026.5 hPa

Link to 5 minute data for KEGE

Wind History from EGE (wind in knots)
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Last 24hrN3CalmSW4NE5CalmSW3SE3E3CalmW4W4SW15SW14W8W11W4E10E8E9E8E6E5E7E4
1 day agoE4CalmS3CalmS3CalmCalmCalmCalmW3CalmCalmCalmE4E4E5SE3E5NE3SE4CalmSE3CalmCalm
2 days agoNW15
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W143E9E10E10E9E7E8E9SE4

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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.
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Ground Weather Radar Station




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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 numerous 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.