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 'RJSY' 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 10 data sources. The source which most closely matches the consensus is chosen. Many of these sources only report the location to the nearest minute (or hundredth of degree). This can lead to the marker being placed noticeably incorrectly. Please see Discussion of Location Errors for more information. Show location history.
|2007-11-28||38.8170||139.7830||25||Shonai Airport, Japan|
|2007-11-29||38.8170||139.7830||25||Shonai Airport, JP|
|2007-11-30||38.8200||139.7800||25||Shonai Airport, JP|
|2007-12-15||38.8200||139.7800||25||Shonai Airport, Japan|
|2015-05-07||38.8122||139.7872||25||Shonai Airport, 6, Japan|
There are no photographs of the station. If you have pictures of this location, then please email them to firstname.lastname@example.org.
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
A recently received weather report from this station was
|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 .
|47587||7.3 miles||Northeast||Sakata, 06, Japan (lat 38.9083°, long 139.8433°, altitude 4 metres)||-1.0mb||5.1°F||-0.3°F|
|47520||28.6 miles||East||Shinjo, 06, Japan (lat 38.7569°, long 140.3122°, altitude 102 metres)||-1.4mb||8.1°F||-0.0°F|
|RJSC||42.0 miles||Southeast||Yamagata Airport, Japan (lat 38.4119°, long 140.3711°, altitude 108 metres)||-0.1mb||-0.8°F||0.9°F|
|47588||49.0 miles||Southeast||Yamagata, 06, Japan (lat 38.2556°, long 140.3461°, altitude 153 metres)||-1.4mb||5.5°F||1.4°F|
|RJSK||60.2 miles||North||Akita Airport, Japan (lat 39.6156°, long 140.2186°, altitude 96 metres)||-0.0mb||2.6°F||0.8°F|
|47582||64.7 miles||North||Akita, 05, Japan (lat 39.7167°, long 140.0983°, altitude 21 metres)||-0.9mb||7.4°F||0.8°F|
|RJSN||69.4 miles||Southwest||Niigata Airport, Japan (lat 37.9560°, long 139.1210°, altitude 4 metres)||-0.1mb||-2.3°F||-4.1°F|
|47590||71.1 miles||Southeast||Sendai, 04, Japan (lat 38.2617°, long 140.8967°, altitude 43 metres)||-0.4mb||3.9°F||1.1°F|
|47604||75.4 miles||Southwest||Niigata, 15, Japan (lat 37.9112°, long 139.0052°, altitude 5 metres)||-1.2mb||2.7°F||-3.9°F|
|RJSS||76.8 miles||Southeast||Sendai Airport, Japan (lat 38.1397°, long 140.9169°, altitude 4 metres)||0.6mb||-1.2°F||-0.1°F|
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.