New Weather Observation Equipment at Northerly Island, Chicago

New Weather Equipment at Northerly Island Now in Use
Data from the new weather equipment installed by the National Weather Service (NWS) began to be officially used in observation products issued by the NWS Chicago Forecast Office in Romeoville shortly after midnight December 1. The elements reported are the temperature, dew point, wind direction and wind speed. In addition, in the spring of 2013, precipitation data will be available. Also, at some point in the future, barometric pressure may be added.
The affected NWS products are;
ASUS43 KLOT RWRIL...Illinois Regional Weather Roundup
NZUS59 KLOT HRRLOT...Chicago Area Weather Roundup
ASUS63 KLOT RTPLOT...Maximum/Minimum Temperature and Precipitation Table (For the Chicago Regional Roundup)
ASUS63 KLOT RTPIL...State Maximum/Minimum Temperature and Precipitation Table (For the State Of Illinois Roundup)
The station identifier, CGX, for the previous equipment will shortly be changed to CNII2 for the new equipment. This will affect The RTPLOT and RTPIL products listed above.
The NWS maintained weather equipment at Meigs Field on Northerly Island while the airport was in operation. After the closure of Meigs Field in March, 2003, the NWS was able to retain only the temperature and dew point equipment (H083). In April, 2005 the site became an official NWS Cooperative site in order to retain the data for historical purposes. Since the H083 equipment is nearly obsolete, the NWS was able to procure newer equipment and signed a lease with the City of Chicago Park District for a new location on the island for the equipment.
For examples of the hourly reports, please see the internet addresses;
If you have any questions regarding the new weather equipment at Northerly Island, please contact:
Bill Nelson, Observations Program Leader (OPL)
NWS WFO Chicago/Romeoville IL
Phone: 815-834-1435

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