CWOP Information for N1NSI (AP952) in Contoocook, NH, US

The following information is known about N1NSI. 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: 43° 13' 34" N (deg min sec), 43.2262° (decimal), 4313.57N (LORAN)
Longitude: 71° 42' 18" W (deg min sec), -71.7050° (decimal), 07142.30W (LORAN)
Elevation: 116 metres (382 feet) -- validated against 116 metres (381 feet) from Geonames
Location: Contoocook, NH, US
County: Merrimack, NH
Forecast Office: Portland (GYX)
Weather station Manager/Operator: Keith
Station type/software: Cumulus/DsVP

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'N1NSI' 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.

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.

Data Status

Over the last 3 days, no data was seen on the following dates: 2019-10-13.

A reasonably recent weather report (5 days ago) received from this station was

The last 24 hours of weather data can be viewed at Findu. This page also provides access to the raw APRS packets and various other APRS related tools.

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 3 days. Change analysis period to Last 7 days  Last 14 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.

A recently received weather report from this station was

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 1 days out of 3), 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: Portland (GYX) .

FW01352.3 milesSouth Hopkinton, NH, US (lat 43.1948°, long -71.6912°, altitude 229 metres)
DW09803.4 milesNortheast Webster, NH, US (lat 43.2700°, long -71.6765°, altitude 133 metres)
EW59308.4 milesNorthwest Warner, NH, US (lat 43.3048°, long -71.8325°, altitude 243 metres)
KCON10.3 milesEast Concord, Concord Municipal Airport, NH, United States (lat 43.2049°, long -71.5026°, altitude 105 metres)
FW535611.3 milesSoutheast Bow, NH, US (lat 43.1093°, long -71.5485°, altitude 240 metres)
EW855413.1 milesSoutheast Goffstown, NH, US (lat 43.0618°, long -71.5763°, altitude 181 metres)
FW189213.6 milesSouth Manchester, NH, US (lat 43.0330°, long -71.7575°, altitude 241 metres)
DW314214.1 milesEast Conway, NH, US (lat 43.2830°, long -71.4372°, altitude 154 metres)
DW583314.7 milesEast Chichester, NH, US (lat 43.2108°, long -71.4143°, altitude 203 metres)
EW034515.0 milesSoutheast Hooksett, NH, US (lat 43.0953°, long -71.4688°, altitude 91 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


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
Questions for this weather station owner/operator to Keith
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