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.
The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'W1APS' 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.
|2007-06-04||42.5738||-71.4486||109||Westford, MA US|
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=as666'. 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.
Weather data was seen at findu.com around 356 days ago on 2013-04-28.
A recently received report from this station was
If this is not a weather report, then your station may not be transmitting weather reports, and this may be the problem. Check the recent reports at findu.com to see if any look like weather reports.
A reasonably recent weather report (356 days ago) received from this station was
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: Boston (BOX) .
|CW3681||3.2 miles||Northeast||Westford, MA US (lat 42.6097°, long -71.4075°, altitude 53 metres) (data present)|
|CW0003||4.3 miles||Southeast||Carlisle, MA US (lat 42.5445°, long -71.3735°, altitude 61 metres) (data present)|
|DW4858||5.0 miles||North||Tyngsboro, MA US (lat 42.6444°, long -71.4668°, altitude 83 metres) (data present)|
|KC1AJJ||5.7 miles||Northeast||North Chelmsford, MA US (lat 42.6335°, long -71.3707°, altitude 43 metres) (data present)|
|EW0186||5.8 miles||Southeast||Carlisle, MA US (lat 42.5294°, long -71.3522°, altitude 60 metres) (data present)|
|DW1283||6.0 miles||Southeast||Carlisle Public School, MA US (lat 42.5261°, long -71.3496°, altitude 75 metres) (data present)|
|CW3660||6.7 miles||Northeast||Lowell, MA US (lat 42.6257°, long -71.3369°, altitude 56 metres) (data present)|
|EW3308||8.7 miles||Northwest||Pepperell, MA US (lat 42.6672°, long -71.5633°, altitude 63 metres) (data present)|
|DW7818||8.8 miles||South||Stow, MA US (lat 42.4545°, long -71.5088°, altitude 95 metres) (data present)|
|EW1706||8.9 miles||Northeast||Lowell, MA US (lat 42.6343°, long -71.2935°, altitude 57 metres) (data present)|
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 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.