CWOP Information for FW2991 (F2991) in Fairlee, VT, US
The following information is known about FW2991. 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.
Latitude: 43° 55' 11" N (deg min sec), 43.9198° (decimal), 4355.19N (LORAN) Longitude: 72° 9' 55" W (deg min sec), -72.1652° (decimal), 07209.91W (LORAN) Elevation: 237 metres (776 feet) Location: Fairlee, VT, US County: Orange, VT
Forecast Office: Burlington (BTV) Weather station Manager/Operator: Peter Station type/software: Meteobridge 4.3
The elevation does not correspond with the estimated elevation (254 metres (833 feet) -- source Geonames) at that point. Either the location or the elevation (or both) are almost certain to be incorrect. Please use the 'send the updated information' link below to update the location or elevation.
The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'FW2991' 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 best way to
get elevation is to consult a topographic map. Make sure that you know whether the contours are marked in
feet or metres. Note that handheld GPS receivers do not provide readings of elevation accurate to better than 10-20 metres (technical discussion). If you do not have access to a topographic map, then a GPS receiver is acceptable, but make
sure that it is operating in 3D mode and let it average the position for at least five minutes.
For more information on reading maps, please see the Topo Map Reading Guide -- in particular it discusses how to read contours.
NOTE: The Registered Location is the location that the station owner provided when they signed up with CWOP.
The position of the clicked point on the map is:
The position of the 'FW2991' marker on the map is:
Latitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Longitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Estimated elevation is dummy metres (dummy feet) from dummy.
Location is dummy (reverse geocoded).
Move marker to new address.
The station (or view from the station) is shown here. You can choose the view direction to see the surroundings. Other information (and somewhat larger images) can be found by clicking on the picture.
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.
Status: 3 found.
Clicking on the map above will redo the search centered on the clicked point.
You can try to find photographs from the area surrounding the selected point by clicking on Find nearby photographs.
APRS Location recorded at 2025-Mar-06 01:44 UTC Latitude: 49° 55' 11" N (deg min sec), 49.9198° (decimal), 4955.19N (LORAN) Longitude: 72° 9' 54" W (deg min sec), -72.1650° (decimal), 07209.90W (LORAN)
The location reported in the weather reports (via APRS) is significantly different to the registered location above. In particular, the difference is about 415.0 miles. If you have changed your location (or software) since the time above, then this can be a false alarm. Check the location currently being reported at findu.com.
Please check which location is correct. If the registered location is incorrect, then you can correct it by dragging the marker above and using the 'send the updated information link'. If the APRS location is incorrect, then you must enter the correct coordinates into your software which generates the weather report (APRS) messages. Note that the various different types of software take the location in different formats, so be sure to use the correct format when entering the latitude and longitude.
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.
The inconsistency noted above in your location information means that the analyzed readings for
your location may be incorrect. For example, if your location is incorrect, then the analysis values will be for a location
other than your station. This will give different analysis results, probably leading to errors being shown below. If the
elevation is incorrect, then the comparison of temperature readings will be in error.
A recently received weather report from this station was
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
Latest daily graph:
These values are within the acceptable range. This probably means that your sensor is sited correctly and is calibrated correctly.
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
Latest daily graph:
These values are within the acceptable range. This probably means that your sensor is sited correctly and is calibrated correctly.
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
Today
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.
Bristol, NH, US (lat 43.5948°, long -71.7415°, altitude 150 metres)
0.8mb
0.0°F
1.6°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.
Overall website comments, problems etc to Philip Gladstone Page layout last modified Sunday, 28 February 2016
Questions for this weather station owner/operator to Peter This page is one of 106203 similar pages. This one was generated in 0.17 seconds.
or
250 miles 
