MesoWest Information for VLMC2 in Vail Mountain, CO, United States Of America (site inactive)

The following information is known about VLMC2. If you think that any information is incorrect, then please follow the instructions for correcting that data item.

It is possible that this page will report a problem where no problem exists. If you believe that this has happened, then please contact me (address at the bottom of this page) and explain clearly why you think this page is in error. Note that any changes that you make may take a few days to show up here, so please give it a week before commenting.

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Registered Location

Latitude: 39° 37' 0" N (deg min sec), 39.6168° (decimal), 3937.01N (LORAN)
Longitude: 106° 22' 48" W (deg min sec), -106.3801° (decimal), 10622.80W (LORAN)
Elevation: 3139 metres (10300 feet) -- validated against 3151 metres (10339 feet) from Google
Location: Vail Mountain, CO, United States Of America
County: Eagle, CO
Data provider: SNOTEL
Forecast Office: Grand Junction (GJT)

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'VLMC2' marker) will display the latitude/longitude of that point.

If the displayed location (or elevation) of the weather observing location is incorrect, please drag the marker to the right location (or click in the right location), and then send the updated information. Please note that we are trying to spot either the Stevenson Screen (or equivalent) or the location where the barometric readings are taken.

Can you help with location quality? Please indicate if the marker on the map points at the weather instrument cluster:

The location information for this site was gathered from 2 data sources. The source which most closely matches the consensus is chosen. Many of these sources only report the location to the nearest minute (or hundredth of degree). This can lead to the marker being placed noticeably incorrectly. Please see Discussion of Location Errors for more information. Show location history.

The station (or view from the station) is shown here. You can choose the view direction to see the surroundings. Other information (and somewhat larger images) can be found by clicking on the picture.

You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs.

Data Status

Over the last 28 days, no data was seen on the following dates: 2017-07-12 to 2017-07-24.

Recent observations from this weather station can be downloaded as a CSV file suitable for importing into various spreadsheet programs: last 7 days, last 14 days, last 28 days, last 56 days. This data can also be linked directly from Excel using a Web Query. The main link goes to the page with the data on it, and the IQY link is the Web Query that will access it: last 7 days (IQY: last 7 days), last 14 days (IQY: last 14 days), last 28 days (IQY: last 28 days), last 56 days (IQY: last 56 days).

All the means and standard deviations shown below are from the last 28 days. Change analysis period to Last 3 days  Last 7 days  Last 14 days  Last 8 weeks  Last 13 weeks  Last 26 weeks  Last 39 weeks  Last 52 weeks  

Temperature

  24 hours  Day time  Night time
Average temperature error-4.7 °F-0.8 °F-10.0 °F
Error standard deviation6.9 °F5.8 °F3.9 °F
Worst average temperature error-7.3 °F-4.2 °F-13.4 °F
Worst standard deviation8.6 °F7.1 °F4.3 °F

NOTE: If the error above is POSITIVE, then it means that the analysis temperature is HIGHER than the reported temperature. This means that your sensor is reading COLDER than expected.

  Both day (mean error -0.8, sd 5.8) and night (mean error -10.0, sd 3.9) values out of range
 
MADIS
rating
MADIS rating 60% QC OK
Sensor fails following checks:
L3 Spatial Consistency
 

Latest daily graph:

Latest daily graph

The values returned by your sensor indicate a system problem. This can be caused by a 'stuck' sensor that always reports the same value. Please check your station for proper operation.

Neighboring Stations

This is a list of stations that are close to this station. Note that this is not the list of stations that are used in the data analysis. That list of stations is known only to MADIS. You can see all the stations at MADIS Data Display. Your station should be in the middle of the display. If you think that the analysis is incorrect, then maybe one of the close stations has failed.

You can look at those for comparison purposes. The average difference between your station and each station below is listed as well. This may allow you to detect local stations which are erroneous. You can also use these numbers to adjust your instruments -- especially if a number of ASOS stations have similar differences to your station. Also, try increasing the analysis period to more than the default 28 days. The difference is only given if both stations report reasonably often during each day. Some stations only report every 6 hours, and this makes the average of less interest. In this case, the average is not displayed. The values reported are the differences between this station and the neighboring station. I.e. if the difference is positive, then this station is reading higher than the neighboring station. Since this station has not been reporting continuously during the analysis period (it missed 13 days out of 28), the offsets below may not be accurate.

You can also subscribe to an RSS feed to tell you when new stations come online in this area. Choose either within 100 miles or 250 miles . For stations covered by your Forecast Office: Grand Junction (GJT) .

SiteDistanceLocationBarometerTemperatureDewpoint
CW93529.5 milesWest Avon, CO, US (lat 39.6592°, long -106.5493°, altitude 2468 metres) 6.2°F
DW634014.9 milesEast Silverthorne, CO, US (lat 39.6237°, long -106.1008°, altitude 2952 metres) 3.6°F
EW619017.6 milesSouth Summit County, CO, US (lat 39.3800°, long -106.5000°, altitude 2739 metres) 5.9°F
EW834519.0 milesEast Breckenridge, CO, US (lat 39.5367°, long -106.0388°, altitude 2845 metres) 5.3°F
CW956137.0 milesNorth Kremmling, CO, US (lat 40.1392°, long -106.5312°, altitude 2629 metres) 8.0°F
DW418243.0 milesSoutheast Jefferson, CO, US (lat 39.2588°, long -105.7208°, altitude 2872 metres) 6.4°F
CW506650.1 milesEast Gilpin Co., CO, US (lat 39.8295°, long -105.4802°, altitude 2854 metres) 3.0°F
FW054950.6 milesEast Black Hawk, CO, US (lat 39.8422°, long -105.4747°, altitude 2813 metres) 2.1°F
DW387050.8 milesSouthwest Redstone, CO, US (lat 39.2794°, long -107.2246°, altitude 2028 metres) 10.9°F
DW438150.9 milesEast Black Hawk, CO, US (lat 39.8440°, long -105.4707°, altitude 2783 metres) 2.6°F

Quality Control Notes

This page reports on the quality control checks performed by MADIS. The green check mark and red cross are chosen based on the average performance during the analysis period (which is selectable above). The red cross can appear even if MADIS reports that all observations pass the MADIS QC checks.

The 'MADIS rating' reports on the percentage of observations that pass the MADIS checks. You should aim for two thumbs up!

Location Formats

The location is shown in three different formats. Each of these is used in some software, and is shown on some websites.

Degrees Minutes Seconds: VWS/VWSAPRS, WeatherLink 5.5, WeatherLink (5.2-5.4), WeatherView (Linux)

Decimal degrees: FreeWX, WeatherView32 (PC application)

LORAN: WeatherDisplay, WUHU, Henriksen WServer

Resources

CWOP Home: This describes the whole CWOP program and has a large amount of useful information.

CWOP Siting Guide (PDF): This is a guide to siting and operating a CWOP station. This is a must-read document.

Another CWOP Guide (PDF): This is another guide to siting and operating a CWOP station. This is a must-read document.

Urban Siting and Operations (PDF): This is a guide to siting and operating a CWOP station in an urban environment.

APRS WX Message format: This describes the actual format of the messages transmitted that carry WX information.

WXQC Mailing List: This is a mailing list where data quality issues are discussed. Assistance with software configuration can often be found here.

Topo Map Reading Guide: How to read USGS topographic maps, with a good section on reading contours.

Geographically nearby web pages: Use Geourl to find web pages that deal with locations geographically close to this site.


Overall website comments, problems etc to Philip Gladstone
Page layout last modified Sunday, 28 February 2016
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