MesoWest Information for UP554 in Marsh1, AZ, United States Of America (site inactive)

The following information is known about UP554. 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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UP554
FW9416
GW0258
KA7WSB-2
GW0551
CW6532
FW3746
KD6VLN-14
EW2786
DW9593
FW0501
FW9306
EW2415
DW9177
EW9092
KC5JIM
EW1033
EW1326
CW8733
W7SA-12
KC9UHI-13
EW5423
EW7504
DW4536
EW7226
DW5698
EW6437
N6RDS-8
EW8311
EW1722
GW4691
FW9002
EW8967
DW9697
EW8310
FW9185
FW0852
EW8434
DW5242
GW1869
EW7535
GW1039
NK7E-1
NK7E
EW1854
FW3706
CW2274
DW4959
EW0578
EW5809
DW7269
EW4883
EW9456
KB7YYZ
GW1013
EW0820
GW3161
FW0062
GW3620
GW4314
CW4232
CW5619
EW3218
K7AEL
GW1670
GW5079
FW9539
NK7E-2
DW9240
AF9W-5
K7ADX
FW9754
KA7WSB-1
EW2851
FW6147
EW1968
GW4903
CW4098
EW4360
GW3740
K7FRY
KG7KID-1
GW4688
GW4686
AA6MV
CW7706
FW3279
FW6719
GW5790
KG7KID-4
GW5325
KF6RAL-12
GW3034
K9SCH
GW0248
GW1994
GW0136
KE7JVX-3
FW1331
FW9639
FW2673
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Registered Location

Latitude: 32° 0' 44" N (deg min sec), 32.0123° (decimal), 3200.74N (LORAN)
Longitude: 110° 34' 53" W (deg min sec), -110.5815° (decimal), 11034.89W (LORAN)
Elevation: 1103 metres (3617 feet) -- validated against 1104 metres (3623 feet) from NED 1/3rd arc-second: Western United States
Location: Marsh1, AZ, United States Of America
County: Pima, AZ
Data provider: UPR
Forecast Office: Tucson (TWC)

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'UP554' 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 up554@photo.gladstonefamily.net.

You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs. (There may be some)

Data Status

Over the last 28 days, no data was seen on the following dates: 2025-02-14 to 2025-02-20, 2025-03-03 to 2025-03-11.

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  

By default, the longer analysis periods display graphs that show the long term performance of this station. The graphs show the mean error over time, and include error bars which are one standard deviation long. This provides an easy way to see if there are any underlying trends in the data. Note that a 'step' in your data does not (necessarily) mean that something happened to your station. It could mean that another station came online in the local area, and they are changing the analysis.

The analysis is performed by MADIS. This web page just provides visualization of the data that MADIS produces. There are a number of very knowledgeable people who participate on the WXQC Mailing List who do understand exactly how MADIS works and can resolve issues when the analysis seems to be broken. However, in most cases, the station readings are at fault, or the software that is transmitting the data to CWOP. Please check those paths first.

You can also see how this station compares with other stations.

Temperature

  24 hours  Day time  Night time
Average temperature error5.6 °F4.7 °F6.3 °F
Error standard deviation2.2 °F1.9 °F2.3 °F
Worst average temperature error6.5 °F5.7 °F8.0 °F
Worst standard deviation2.7 °F2.6 °F2.7 °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.

  Daytime mean error (4.7) and night time mean error (6.3) both large and positive
 
MADIS
rating
MADIS rating 67% QC OK
Sensor fails following checks:
L2 Statistical Spatial Consistency
L3 Spatial Consistency
 

Latest daily graph:

Latest daily graph

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.

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 16 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: Tucson (TWC) .

SiteDistanceLocationBarometerTemperatureDewpoint
GW055113.4 milesWest Corona De Tucson, AZ, US (lat 31.9512°, long -110.7980°, altitude 991 metres) -0.8°F
DW959317.7 milesNorthwest Tucson, AZ, US (lat 32.2080°, long -110.7760°, altitude 860 metres) 0.2°F
FW930618.3 milesNorthwest Tucson, AZ, US (lat 32.1957°, long -110.8077°, altitude 829 metres) 1.5°F
DW917719.1 milesNorthwest Tucson, AZ, US (lat 32.2168°, long -110.8012°, altitude 820 metres) 1.4°F
EW909219.5 milesNorthwest Tucson, AZ, US (lat 32.2262°, long -110.7980°, altitude 811 metres) 0.9°F
KC5JIM19.6 milesNorthwest TUCSON, AZ, US (lat 32.2369°, long -110.7845°, altitude 830 metres) 1.1°F
CW873320.8 milesNorthwest Tucson, AZ, US (lat 32.2867°, long -110.7262°, altitude 839 metres) 1.6°F
GW469124.0 milesNorthwest TUCSON, AZ, US (lat 32.2550°, long -110.8740°, altitude 753 metres) 2.9°F
FW900224.1 milesNorthwest Tucson, AZ, US (lat 32.2560°, long -110.8752°, altitude 753 metres) 3.0°F
EW896724.9 milesNorthwest Tucson, AZ, US (lat 32.2370°, long -110.9142°, altitude 756 metres) 1.0°F

The sites marked above thus did not report continuously during the analysis period, so the offsets may (probably will) not be accurate.

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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