CWOP Information for DW5477 (D5477) in Petersburg, IL US

The following information is known about DW5477. If you think that any information is incorrect, then please follow the instructions for correcting that data item.

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Registered Location

Latitude: 40° 0' 27" N (deg min sec), 40.0076° (decimal), 4000.46N (LORAN)
Longitude: 89° 49' 29" W (deg min sec), -89.8247° (decimal), 08949.48W (LORAN)
Elevation: 187 metres (614 feet) -- validated against 184 metres (604 feet) from NED 1/3rd arc-second: Eastern United States
Location: Petersburg, IL US
County: Menard, IL
Forecast Office: Central Illinois (ILX)
Weather station Manager/Operator: Ronald
Station type/software: Cumulus/FO

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'DW5477' 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.

NOTE: The Registered Location is the location that the station owner provided when they signed up with CWOP. Show location history.

There are no photographs of the station. If you are the site operator and have pictures of this location, then please upload them to Flickr (detailed instructions) and add the two tags 'wxtagged' and 'wx:cwop=d5477'. If the picture is of the weather station itself, then please also add the 'wx:station' tag as well.

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

Data Status

Over the last 14 days, no data was seen on the following dates: 2014-04-07 to 2014-04-08, 2014-04-10 to 2014-04-18.

A reasonably recent weather report (78 days ago) received from this station was
DW5477>APRS,TCPXX*,qAX,CWOP-1:@311157z4000.45N/08949.48W_178/003g007t020r000p137P000h62b10199eCumulusFO

All the means and standard deviations shown below are from the last 14 days. Change analysis period to Last 3 days  Last 7 days  Last 4 weeks  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.

Neighboring Stations

This is a list of stations that are close to this station. 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 11 days out of 14), 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: Central Illinois (ILX) .

SiteDistanceLocationBarometerTemperatureDewpoint
KSPI13.5 milesSoutheast ABRAHAM LINCOLN CAPITAL AIRPORT , IL, United States (lat 39.8453°, long -89.6840°, altitude 181 metres)
N9GIA17.2 milesNortheast New Holland, IL US (lat 40.1723°, long -89.5810°, altitude 168 metres)
DW345821.7 milesSouth Chatham, IL US (lat 39.6980°, long -89.7555°, altitude 200 metres)
KIJX27.4 milesSouthwest Jacksonville, Jacksonville Municipal Airport, IL, United States (lat 39.7740°, long -90.2419°, altitude 190 metres)
KAAA27.8 milesEast Lincoln, Logan County Airport, IL, United States (lat 40.1589°, long -89.3389°, altitude 182 metres)
CW786528.7 milesNortheast Delavan, IL US (lat 40.3620°, long -89.5414°, altitude 177 metres)
IL03630.4 milesSouth I-55/il104 @ Pawnee, IL, United States Of America (lat 39.5897°, long -89.6467°, altitude 185 metres)
DW944032.8 milesWest Browning, IL US (lat 40.1445°, long -90.4177°, altitude 198 metres)
DW531133.1 milesEast Mount Pulaski, IL US (lat 40.0000°, long -89.2000°, altitude 603 metres)
KTAZ42.0 milesSoutheast Taylorville, Taylorville Municipal Airport, IL, United States (lat 39.5351°, long -89.3294°, altitude 190 metres)

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 Monday, 10 February 2014
Questions for this weather station owner/operator to Ronald
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