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The Weather Hazard Threefold

A large dome of high pressure will continue the sweltering heat in parts of the West and the central Plains. Meanwhile, a cold front will produce severe thunderstorms, capable of all hazards, the next few days from the Mid-Upper Mississippi Valley into the Ohio Valley and Great Lakes. Finally, Potential Tropical Cyclone Three will bring heavy rain and flooding to the northern Gulf Coast. Read More >

Severe Weather Spotter Training Schedule


To help ensure safety during the ongoing COVID-19 pandemic, all of this year's National Weather Service Green Bay storm spotter training classes will be held virtually. We thank you for your understanding and interest in our spotter training classes.


For more information on the storm spotter program, including online training materials, brochures and references, please visit: https://www.weather.gov/grb/skywarn

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(Virtual) storm spotter training for 2021 starts during Wisconsin's Severe Weather Awareness Week in mid-April!

Each session is expected to last around 60 minutes and are designed in a way to have interaction with NWS Green Bay meteorologists, and a chance to ask them your severe weather-related questions!

This year, NWS Green Bay will host 6 virtual "standard" spotter training sessions, and 2 advanced spotter training sessions. You only need to attend one session to become a storm spotter. A certificate will be sent to attendees shortly after the end of the session.

  • The Standard spotter training sessions are designed to teach you about severe weather safety, climatology, and the information you need to share a storm report with the National Weather Service Green Bay.
  • The Advanced spotter training sessions cover most of what is taught during the Standard sessions, and adds more mesoscale and storm-scale science and terminology.

If you cannot make any of the spotter training sessions, and/or want to learn in a self-paced manner, we have official spotter training courses are available here.

Calendar of Spotter Classes for 2021

Please click on the calendar entry below to view more information about the training session. Check back often for schedule updates.