WAUSAU – The weather forecasts we see each day are based on an array of meteorological sensing networks and intensive computer modeling. But before the rise of these technologies, forecasts were made by understanding cloud formations and wind directions – something anyone can learn to do. 

At 10 a.m. April 29, “Route 51” host Shereen Siewert welcomes WSAW-TV meteorologist Chad Franzen for a discussion on the physical processes driving weather and the global forces that shape our climate system. Can the flap of a butterfly’s wings in Brazil really set off a tornado in Texas? Listen in and find out.

Listeners can join the conversation by calling 800-780-9742 or emailing questions to ideas@wpr.org.

“Route 51” is heard Fridays at 10 a.m. on The Ideas Network stations 101.3 & 91.9/Wausau, AM 930/Auburndale-Stevens Point, 99.1/Stevens Point, 100.9/Marshfield, 90.3/Park Falls, 89.1/Adams-Wisconsin Rapids, 89.9/Rhinelander-Eagle River, 88.3/Menomonie-Eau Claire and 88.7/River Falls and live streamed at wrfw887.com/listen-live.html. It is re-broadcast Fridays at 7 p.m. on 90.9/Wausau. Program archives are available at wpr.org/route51.