MesoWest Information for MTDPC in Deep Creek US12 MP 23.5, MT, United States Of America (site inactive)

The following information is known about MTDPC. 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
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MTDPC
GW2821
CW7710
FW1642
WA1TYB-13
AE7RN
DW9972
EW5549
DW6667
K7MT
FW1907
FW3597
FW8187
EW9635
FW7359
FW1650
EW6366
DW7301
DW8455
GW0007
EW3831
CW9353
FW8329
FW9201
EW4329
FW1843
K9BM
GW2604
FW2944
FW5493
GW3067
CW9088
FW0639
K7CTM
EW6167
GW3863
EW4079
CW9321
EW9980
FW8212
GW3664
GW3862
GW5361
GW4108
FW8742
GW4017
GW3488
GW4097
GW1952
FW8526
FW2748
GW1785
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Registered Location

Latitude: 46° 21' 5" N (deg min sec), 46.3515° (decimal), 4621.09N (LORAN)
Longitude: 111° 4' 0" W (deg min sec), -111.0668° (decimal), 11104.01W (LORAN)
Elevation: 1789 metres (5870 feet) -- validated against 1789 metres (5869 feet) from NED 1/3rd arc-second: Western United States
Location: Deep Creek US12 MP 23.5, MT, United States Of America
County: Meagher, MT
Data provider: MT DOT
Forecast Office: Great Falls (TFX)

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'MTDPC' 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 mtdpc@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 °F0.1 °F0.3 °F
Error standard deviation2.4 °F2.3 °F2.5 °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.

 
 
MADIS
rating
MADIS rating 98% QC OK
 

Latest daily graph:

Latest daily graph

These values are within the acceptable range. This probably means that your sensor is sited correctly and is calibrated correctly.

Dewpoint -- or switch to Relative Humidity

  24 hours  Day time  Night time
Average dewpoint error3.3 °F3.9 °F2.9 °F
Error standard deviation1.9 °F1.9 °F1.7 °F
Worst average dewpoint error4.7 °F5.2 °F4.4 °F
Worst standard deviation2.2 °F2.5 °F2.0 °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.

  Mean error (3.3) out of range, but low standard deviation (1.9)
 
MADIS
rating
MADIS rating 99% QC OK
 

Latest daily graph:

Latest daily graph

There is a significant mean error in your dewpoint readings. You may need to calibrate your dewpoint sensor. Your readings are not within an acceptable error range. The automated problem analysis cannot identify the problem. You can signup on the wxqc mailing list and post information about this situation there. This is may be caused by poor siting of the sensor (e.g. under eves, in screen porch, or in thick tree coverage). For 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 68% QC OK
Sensor fails following checks:
L3 Spatial Consistency
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: Great Falls (TFX) .

SiteDistanceLocationBarometerTemperatureDewpoint
GW282116.6 milesWest Townsend, MT, US (lat 46.3870°, long -111.4100°, altitude 1268 metres) 9.5°F-4.0°F
CW771036.7 milesSouthwest Logan, MT, US (lat 45.8772°, long -111.4105°, altitude 1289 metres) 13.3°F-2.4°F
AE7RN42.9 milesSouth MANHATTAN, MT, US (lat 45.7548°, long -111.3096°, altitude 1524 metres) 2.2°F-7.7°F
EW554945.3 milesNorthwest Helena, MT, US (lat 46.6433°, long -111.9195°, altitude 1136 metres) 15.0°F-2.7°F
FW190746.3 milesSouth Bozeman, MT, US (lat 45.6828°, long -111.0823°, altitude 1464 metres) 8.7°F-1.6°F
FW359747.2 milesSouth Bozeman, MT, US (lat 45.6700°, long -111.0400°, altitude 1486 metres) 3.7°F-4.8°F
FW818747.5 milesSouth Bozeman, MT, US (lat 45.6718°, long -110.9247°, altitude 1584 metres) 10.4°F-0.2°F
FW735950.6 milesWest Helena, MT, US (lat 46.6125°, long -112.0595°, altitude 1190 metres) 13.2°F-3.7°F
DW730157.4 milesSouth Livingston, MT, US (lat 45.5527°, long -110.7400°, altitude 1701 metres) 7.5°F-0.1°F
GW306785.1 milesNorthwest Lincoln, MT, US (lat 46.9113°, long -112.6627°, altitude 1450 metres) 9.1°F-3.1°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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