MesoWest Information for UP218 in Milis1, WY, United States Of America (site inactive)

The following information is known about UP218. 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.

For development purposes only
Sorry, we have no imagery here.
For development purposes only
Sorry, we have no imagery here.
UP218
N7SHZ
FW1569
EW9050
GW4389
CW4611
EW4987
CW8430
FW5881
GW4028
CW8428
CW8844
EW4897
FW8379
CW8429
FW5146
FW2865
EW5472
GW5423
CW6875
EW8702
FW5717
FW0319
EW4956
EW3808
KK7NDB
FW1136
CW0439
EW2533
DW3267
FW0517
KJ7NO-2
EW1185
KK7EF
KN7D
CW8948
AF7DW
CW5210
FW8325
CW8947
GW5214
CW8427
CW8635
GW5805
CW9991
FW3937
CW8826
EW6393
K7PB
FW7048
GW5440
FW2580
EW9449
CW8914
CW8842
GW4949
GW0463
DW0231
EW2067
EW2066
CW7410
GW2381
CW8843
DW2649
FW5963
CW8916
GW4809
DW5026
FW1767
NG7M
EW7354
CW8917
K7UV
KJ7IVE-13
W7CBM
FW1606
FW0287
CW9315
CW8946
GW0602
EW2565
CW9350
DW6120
KG7EW
GW5565
CW9635
EW9651
N7BDR
DW4988
EW7701
CW8721
FW6938
DW5508
FW3671
GW5189
DW6376
CW8633
EW7309
N7HRX
EW3770
EW7523
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Registered Location

Latitude: 41° 11' 58" N (deg min sec), 41.1994° (decimal), 4111.96N (LORAN)
Longitude: 110° 51' 23" W (deg min sec), -110.8563° (decimal), 11051.38W (LORAN)
Elevation: 2144 metres (7035 feet) -- validated against 2148 metres (7049 feet) from NED 1/3rd arc-second: Western United States
Location: Milis1, WY, United States Of America
County: Uinta, WY
Data provider: UPR
Forecast Office: Salt Lake City (SLC)

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'UP218' 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 1 data source. 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.

There are no photographs of the station. If you have pictures of this location, then please email them to up218@photo.gladstonefamily.net.

You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs. (There are none)

Data Status

Over the last 28 days, no data was seen on the following dates: 2025-02-17 to 2025-02-20, 2025-03-03 to 2025-03-15.

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 error0.2 °F-3.2 °F2.7 °F
Error standard deviation5.0 °F5.0 °F2.7 °F
Worst average temperature error-2.1 °F-7.6 °F5.1 °F
Worst standard deviation6.9 °F6.2 °F3.6 °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.

  Night mean error (2.7) >> day mean error (-3.2)
 
MADIS
rating
MADIS rating 83% QC OK
 

Latest daily graph:

Latest daily graph

Your readings indicate a solar heating problem. This means that the sun can shine directly onto the temperature sensor (or it's housing) and increase the temperature recorded significantly. This is often caused by the lack of a radiation shield, or the sensor is poorly sited. For information on radiation shields, see CWOP Radiation Shields, and information on siting, see CWOP Station Guide.

Wind Vector

The wind vector is the average wind over the relevant period. Note that if the wind blows North for half the time at 2 knots, and then blows South for the other half of the time at 2 knots, then the result is zero -- i.e. North wind and South wind will cancel out. Over time, the direction of the wind and of the analysis should match pretty well. If the lengths of the vector are different, then it could mean either that your anemometer reads high or low, or that you are in a more shielded or more open space.
MADIS
rating
MADIS rating 99% QC OK
TodayLast 7 days
Wind vector chartWind vector chart for last 7 days

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 17 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: Salt Lake City (SLC) .

SiteDistanceLocationBarometerTemperatureDewpoint
FW156917.4 milesSoutheast Robertson, WY, US (lat 41.0425°, long -110.5962°, altitude 2703 metres)
CW842844.3 milesWest Morgan 1426, UT, US (lat 41.0467°, long -111.6820°, altitude 1541 metres)
CW884444.7 milesWest Huntsville 1425, UT, US (lat 41.2600°, long -111.7112°, altitude 1542 metres)
FW837945.5 milesSouthwest Park City, UT, US (lat 40.7431°, long -111.4848°, altitude 2002 metres)
GW542349.8 milesSouthwest PARK CITY, UT, US (lat 40.7053°, long -111.5485°, altitude 2004 metres)
EW870251.8 milesWest Eden, UT, US (lat 41.3250°, long -111.8390°, altitude 1568 metres)
FW031953.8 milesSouthwest Salt Lake City, UT, US (lat 40.7533°, long -111.6998°, altitude 1730 metres)
CW043955.4 milesWest South Weber, UT, US (lat 41.1242°, long -111.9158°, altitude 1397 metres)
EW253355.9 milesWest Bountiful Bench, UT, US (lat 40.8995°, long -111.8515°, altitude 1550 metres)
DW326756.3 milesWest OGDEN, UT, US (lat 41.2460°, long -111.9373°, altitude 1391 metres)

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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