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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 'N3UJJ-1' 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.
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.
Location is dummy.
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.
Clicking on the map above will redo the search centered on the clicked point.
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 28 days. Change analysis period to Last 3 days Last 7 days Last 14 days Last 8 weeks Last 13 weeks Last 26 weeks Last 39 weeks Last 52 weeks
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Latest daily graph:
The standard deviation of your readings is higher than expected. This can be caused by a broken sensor that always reports the same value. It can be caused by a faulty sensor that sometimes reports values way out of range (such as 0). Check that your sensor is operating 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. |
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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. |
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Latest daily graph:
Your readings are not within an acceptable error range. The automated problem analysis cannot identify the problem. You can signup on the wxqc mailing list and post information about this situation there. This is may be caused by poor siting of the sensor (e.g. under eves, in screen porch, or in thick tree coverage). For information on siting, see CWOP Station Guide.
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.
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: Baltimore/Washington (LWX) .
| Site | Distance | Location | Barometer | Temperature | Dewpoint | ||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KANP | 3.5 miles | Northwest | Lee (lat 38.9429°, long -76.5684°, altitude 10 meters) | 1.6mb | -0.2°F | 2.4°F | |||||||||||||||||||||||||||||||||||||||||||||||||
| W3ZH | 4.9 miles | North | Annapolis, MD US (lat 38.9767°, long -76.5505°, altitude 19 meters) | 3.0mb | -1.0°F | 2.2°F | |||||||||||||||||||||||||||||||||||||||||||||||||
| KNAK | 5.4 miles | North | Annapolis, Unit, MD, United States (lat 38.9833°, long -76.4833°, altitude 2 meters) | 1.4mb | -0.6°F | -0.1°F | |||||||||||||||||||||||||||||||||||||||||||||||||
CW3452| 8.8 miles | East | | Stevensville, MD US (lat 38.8707°, long -76.3640°, altitude 3 meters)
| 2.1mb | 0.6°F | 1.0°F
| N8ADN | 10.9 miles | Northeast | | Stevensville, MD US (lat 38.9747°, long -76.3342°, altitude 4 meters)
| 0.4mb | 1.3°F | -5.3°F
| KW29 | 11.2 miles | Northeast | | Bay Bridge - Stevensville, MD, USA (lat 38.9767°, long -76.3300°, altitude 15 meters)
| -0.1mb | -0.2°F | -1.8°F
| CW7344 | 11.5 miles | Northwest | | Crofton, MD US (lat 39.0167°, long -76.6828°, altitude 45 meters)
| -0.4mb | -2.0°F | -0.2°F
| CW9692 | 11.7 miles | Northwest | | Crofton, MD US (lat 39.0292°, long -76.6730°, altitude 43 meters)
| 0.9mb | -0.5°F | 2.5°F
| DW1096 | 15.9 miles | West | | Bowie, MD US (lat 38.9895°, long -76.7955°, altitude 42 meters)
| 1.5mb | 1.3°F | 1.3°F
| CW9926 | 15.9 miles | Northwest | | Millersville, MD US (lat 39.1183°, long -76.6425°, altitude 25 meters)
| 0.8mb | -0.1°F | 4.2°F
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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.
The 'MADIS rating' reports on the percentage of observations that pass the MADIS checks. You should aim for two thumbs up!
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.
