Skywarn Online Training
In addition to local Skywarn training, classes are available online. As stated on the MetEd (UCAR) website, additional classes may be required by local NWS offices or agencies collecting reports of severe weather.
MetEd offers free, basic classes online here: https://www.meted.ucar.edu/training_course.php?id=23
Additional information is provided by NWS here: https://www.weather.gov/skywarn/