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 'AN273' 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.
Can you help with location quality? Please indicate if the marker on the map points at the weather instrument cluster:
The location information for this site was gathered from 2 data sources. This position has been modified based on user feedback.
Show location history.
|2010-02-24||39.0553||-76.8783||52||HU-Beltsville, MD, United States of America|
|2010-05-15||39.0553||-76.8783||62||HU-Beltsville, MD, United States of America|
|2010-09-14||47.4120||-122.3044||76||Tacoma-Tower Dr, WA, United States of America|
|2010-09-15||39.0553||-76.8783||61||HU-Beltsville, MD, United States of America|
|2010-09-17||39.0552||-76.8786||61||HU-Beltsville, MD, United States of America|
|2011-04-28||39.0553||-76.8783||52||HU-Beltsville, MD, United States of America|
|2011-05-07||39.0552||-76.8786||52||HU-Beltsville, MD, United States of America|
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:id=AN273'. 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.
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
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.
|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.|
|Today||Last 7 days|
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) .
|DW2975||3.5 miles||West||Beltsville, MD US (lat 39.0452°, long -76.9425°, altitude 73 metres)||-1.8mb||-1.8°F|
|DW1357||3.8 miles||Southwest||College Park, MD US (lat 39.0090°, long -76.9172°, altitude 29 metres)||-0.4mb||-1.9°F|
|DW0501||5.7 miles||North||Laurel, MD US (lat 39.1333°, long -76.8435°, altitude 92 metres)||1.7mb||-1.5°F|
|DW1590||5.8 miles||North||Laurel, MD US (lat 39.1383°, long -76.8611°, altitude 101 metres)||-1.1mb||-2.4°F|
|EW2809||6.3 miles||West||White Oak, MD US (lat 39.0450°, long -76.9950°, altitude 121 metres)
||-1.5mb||-12.1°F||DW1096||6.4 miles||Southeast||Bowie, MD US (lat 38.9896°, long -76.7951°, altitude 43 metres)
||-1.6mb||-0.8°F||DW8056||7.3 miles||West||Colesville, MD US (lat 39.0632°, long -77.0135°, altitude 99 metres)
||14.8mb||-0.8°F||CW0415||7.4 miles||North||Savage, MD US (lat 39.1542°, long -76.8280°, altitude 96 metres)
||-0.1mb||-0.9°F||DW6747||7.6 miles||North||Columbia, MD US (lat 39.1645°, long -76.8610°, altitude 98 metres)
||-2.3mb||-0.6°F||W3NWS||7.7 miles||Southeast||Bowie, MD US (lat 39.0048°, long -76.7513°, altitude 38 metres)
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.