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SKYWARN is a nationwide National Weather Service (NWS) program of volunteer weather spotters who report hazardous weather to local NWS offices.  SKYWARN volunteers are trained by NWS personnel to recognize features associated with rapidly developing, mature, and dissipating thunderstorms which cause hazardous weather.  SKYWARN spotters also provide reports of heavy snow, heavy rain and flooding.  These spotters provide ground truth observation information on the atmosphere that the NWS meteorologists use along with information from radar, satellites and various reporting stations to provide better forecasts and warnings in their coverage area.

When the NWS issues a warning or watch statement, the Du Page Amateur Radio Club (DARC) SKYWARN net is activated on the DARC repeater system.  The DARC primary Skywarn repeater at 145.43 MHz output frequency (-600 KHz offset) with a 107.2 Hz PL.  Additionally, the DARC 220 repeater [224.68 MHz (-1.6 MHz offset) with a 110.9 Hz PL] is linked to the 2M repeater.  The DARC 440 repeater [442.550 MHz (+5 MHz offset) with a 114.8 Hz PL] is also used as backup NWS liaison.  In the event that both the primary and secondary repeaters fail during a net, stations that have checked-in should tune to the N9ATO repeater [443.900 MHz (+5 MHz offset) with a 114.8 Hz PL].  Listen on the DARC repeater for Emergency Alert System (EAS) warning announcements and NOAA Weather Radio (NWR) for watch, warning specifics.  While all weather radios will report ALL weather warnings broadcasted by the National Weather Service, some Weather Radios come with Specific Area Message Encoding (SAME) capability that (when programmed with the appropriate Federal Information and Processing Standards (FIPS Code) will set off an alarm for any warnings specific to your area (County).




The FIPS code for DuPage and surrounding Counties are: 

DuPage 017043
    Cook 017031  
    Kane 017089  
    Kendall 017093  
    Will 017197  


  NWS Reporting Reference 



DARC SKYWARN program coordinators forward the county reports to the Chicago NWS office in Romeoville.


DARC conducts a SKYWARN training nets in concert with the DuPage County EmComm Net on the 1st & 3rd Tuesdays during the months of February through August and on the 1st Tuesday of the month during the months of January, September, October, November and December at 8 PM. If you are interested in becoming a net control station or are just interested in becoming involved in the DuPage Amateur Radio Club SKYWARN program, you should contact the DARC SKYWARN Coordinator.  All amateurs are encouraged to check into the Net.



DARC SKYWARN Standard Operating Procedures 

  Chicago Weather Forecast Office SKYWARN Network
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Send email to the DARC SKYWARN Coordinator with questions or comments. 

This website is hosted and maintained by the DuPage Amateur Radio Club (DARC).  This website provides information and links relating to amateur radio, club activities,  severe weather and emergency preparedness.  DARC makes no warranties or representations, either express or implied, with respect to the accuracy  or completeness of the contents of this website.  Information may be changed or updated without notice and may contain technical inaccuracies or typographical errors.  DARC shall not be liable for damages of any kind arising out of or in connection with the use of these websites.