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What are we?

Formed in 1955 in response to a summer of wild, wet and destructive weather in the southern part of Colorado, and meeting each day consecutively since September 1st of that year, the Colorado Amateur Radio Weather Net is a coalition of ham radio operators from around the state of Colorado and the region. We are a volunteer organization, and we gather weather information on behalf of the National Weather Service in Boulder, Colorado as a public service of Amateur Radio.

We have two simultaneous nets every day at 6:30 in the morning, one net meets on two meters, on the 146.94MHz RMRL wide-coverage repeater west of Denver. The other net meets on seventy-five meters, at 3.989MHz, Lower Sideband. After the nets close at 7:30, we combine the reports from the two nets and transfer the weather information we’ve gathered to the NWS in Boulder.


Now the tough part: the next thing I should mention is a sense of dedication. Our served agency, the National Weather Service, could get some of the information we provide from any number of sources, but they depend on us Amateur Radio operators for consistent, accurate reporting. Yes, you have to get up early each and every day. Yes, you have to trudge out into the snow to get snow depth readings, yes you have to melt down the new snowfall and report the precip contained in the snow. Yes, you have to keep accurate records. Day after day.

For us, that’s part of the fun; that and working with radios, fighting propagation and conditions to get our messages through to the Net Control stations on the HF nets. On the two-meter nets, we have to depend on repeaters that may have occasional power problems, and other issues. We appreciate the time and devotion of all our reporting stations, additionally those out-of-state stations we hear from every day, in Nebraska, North and South Dakota, Arizona, New Mexico, Texas, Iowa and many others.

If you think this is something you would like to dedicate some of your time to every day, drop me an email.

Gary Dumbauld,
Net Manager, Colorado Amateur Radio Weather Net


What We Do

Since we are ham radio people, the first thing necessary to be a “weather-netter” is a radio, a license to operate it and an antenna. Your class of license will depend on how and where you wish to check in, on 75 meters or on the 2 meter net.

The next thing in the mix is either a set of good weather instruments (anemometer, two recording thermometers for the daily high and low temperatures, a recording barometer to keep track of pressure trends and a four-inch or larger NWS approved rain gauge, all in a Stevenson Screen or the equivalent) or one of the large crop of electronic digital weather stations, available from Ambient Weather, Peet Brothers, Davis Instruments, and others (and a four-inch NWS approved rain gauge for accuracy).

With the digital weather stations, it’s good to note that you get what you pay for; the more expensive of these have faster/more accurate parts and pieces, and quicker reporting times and other capabilities such as connection to a personal computer, and/or the capability of creating reports, websites, or passing information to many of the online weather-hobbyist sites such as Weather Underground, the Citizens’ Weather Observing Program and the like with software sometimes included with the equipment.