Weather Service Primer

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National Weather Service (Norman, Oklahoma) Radio Operations Primer


We've had several questions recently about amateur radio operations from NWS Norman. So I've put together a short primer on our amateur radio operations for your reference.

The amateur radio network used by NWS Norman is intended to be a liaison network. That is, it's intended to be used to relay traffic between the NWS and emergency management, storm spotter groups and the media throughout our county warning area. Local spotter groups use their local frequencies and procedures to gather information about severe storms threatening them. Reports are then relayed to NWS Norman using the liaison network. NWS Norman also uses the system to relay important weather information to spotter groups and emergency managers, including radar updates, warnings and statements, etc. The information that is disseminated by the NWS is sent on the appropriate repeater/link system.

NWS really appreciates the time, hard work and money it takes to set up and maintain the amateur radio repeaters in the system. It would not happen without the dedication of the public service minded people who keep the repeaters on the air. Thanks to all of you!!

Anyone - whether you're a licensed amateur radio operator or not - can monitor the network.

We use three basic systems for amateur radio communications. Visit this site for a map showing the approximate coverage areas for each system:

Southwest Oklahoma and western north Texas are served by the SWIRA (Southwest Independent Repeater Association) linked repeater system (visit for details). This repeater system allows us to talk to emergency management officials basically from I-40 south and from roughly Highway 81 west, including the Wichita Falls, Vernon and Quanah Texas areas. The repeaters and their frequencies are:

Cyril - 147.045 - + offset - no tone
Grandfield 147.255 - + offset - no tone
Granite 146.715 - -offset - no tone

The repeaters are usually linked, so if you talk on one you're talking on all of them, and if you monitor one you are monitoring all of them.

Occasionally the Southwest Link is linked together with the Oklahoma City 145.410 repeater and/or the 146.745 Ardmore repeater.

Much of the I-35 Corridor is served by the WX5OKC repeater located near Crossroads Mall in Oklahoma City. This repeater is linked as needed to a new repeater near Ardmore to provide coverage to south central Oklahoma. The repeaters and their frequencies are:

Oklahoma City - 145.410 - - offset - 141.3 tone
Ardmore - 146.745 - - offset - 141.3 tone

At times this system will be linked to a repeater in Perry (444.925), which provides coverage into north central Oklahoma.

A series of repeaters usually provides coverage for much of northwest Oklahoma. NWS Norman uses a UHF repeater in Edmond, which is usually linked to another repeater in Watonga, then linked to a repeater near Woodward. Pieces of this link system have been down for a while, but we hope to be using it again soon. The frequencies are:

Edmond - 443.425
Watonga - 146.745
Sharon - 147.360/444.950

When the system is not fully operational

To test the system, NWS reads the Hazardous Weather Outlook every day from March 15 through June 15 at 730 AM and 1230 PM. The Outlook is also read any time of year when there is a risk of severe weather.

While you do not need a license to monitor what goes on on the amateur radio links, it's easier than ever to get your amateur radio license. For more information on how to get your amateur radio license, visit...

If you have any questions or comments about the amateur radio network, let me know.