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The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'KN99' 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.
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.
Latitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Longitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Estimated elevation is dummy meters (dummy feet) from dummy.
There are no photographs of the station. If you have pictures of this location, then please upload them to Flickr (detailed instructions) and add the two tags 'wxtagged' and 'wx:metar=kn99'. If the picture is of the weather station itself, then please also add the 'wx:station' tag as well. Please geotag your images, and those coordinates may be used in the estimation of the location of this site.
You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs. (There are some) (There are none) (There may be some) (Automatically loaded if any)
Status: Status: None found.Clicking on the map above will redo the search centered on the clicked point.
If any images are of the weather station, then please click on those images, and add the 'wxtagged' and 'wx:metar=kn99' tags to those images. For the station itself, please add the 'wx:station' tag as well. Some users do not permit other users to add tags to their images. In these cases, just add a comment to the picture asking the photographer to add the tags themselves.
Clicking on the map above will redo the search centered on the clicked point.
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: Philadelphia/Mt Holly (PHI) .
| Site | Distance | Location | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KOQN | 0.0 miles | South | Brandywine (lat 39.9901°, long -75.5819°, altitude <unknown> meters) (data present) | |||||||||||||||||||||
| W3AHL-2 | 2.4 miles | West | West Chester, PA US (lat 39.9833°, long -75.6258°, altitude 148 meters) (data present) | |||||||||||||||||||||
| WA3NOA-2 | 2.5 miles | Northwest | W.Whiteland Tnsp, PA US (lat 40.0083°, long -75.6225°, altitude 164 meters) (data present) | |||||||||||||||||||||
| W3QA-2 | 3.0 miles | West | West Chester, PA US (lat 39.9780°, long -75.6363°, altitude 128 meters) (data present) | |||||||||||||||||||||
| N3NTP-2 | 3.9 miles | East | West Chester, PA US (lat 39.9758°, long -75.5103°, altitude 129 meters) (data present) | |||||||||||||||||||||
K3JV-2| 4.2 miles | Southwest | | West Chester, PA US (lat 39.9467°, long -75.6367°, altitude 89 meters)
(data present)
| W3JY-2 | 4.4 miles | Northeast | | Malvern, PA US (lat 40.0162°, long -75.5058°, altitude 139 meters)
(data present)
| W3JEF-2 | 4.4 miles | Southeast | | West Chester, PA US (lat 39.9620°, long -75.5067°, altitude 123 meters)
(data present)
| W3JBS-2 | 4.7 miles | Southeast | | Westtown, PA US (lat 39.9511°, long -75.5105°, altitude 105 meters)
(data present)
| W3AHR-2 | 5.6 miles | Northwest | | Dowingtown, PA US (lat 40.0300°, long -75.6747°, altitude 228 meters)
(data present)
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The sites marked above thus did not report continuously during the analysis period, so the offsets may (probably will) not be accurate.
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
CWOP Guide (PDF): This is a guide to siting and operating a CWOP station. This is a must-read document.
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.