NOAA Weather Radio
National Weather Service Forecast Office in Mobile is your source for the most complete weather forecast and weather related information on the web
www.weather.govThe National Weather Service's NOAA Weather Radio uses seven standard VHF frequencies for continuous weather broadcasts across the U.S..[1][2]
No major recent news indicates changes to these frequencies, which remain 162.400, 162.425, 162.450, 162.475, 162.500, 162.525, and 162.550 MHz.[6][9][1]
Recent Updates
Some individual transmitters have faced outages, such as WWF37 Carlsbad, NM (162.475 MHz) since 2022 and WNG572 Petoskey, MI (162.475 MHz) due to antenna damage as of late 2025.[2][10] Coverage relies on over 1,000 stations, with signals typically reaching 40 miles from full-power sites.[9][2]
Local Relevance
In Chicago (your area), key stations include KWO39 at 162.550 MHz from Willis Tower and others like KZZ-81 Lockport at 162.425 MHz.[5][7] Receivers must tune to these VHF public service band frequencies for alerts.[3][2]