Northern Illinois 17 Year Cicadas 2024. Shockley says the great southern brood will start appearing in late april through. A rare and likely massive emergence of two different broods of cicadas is expected in 2024 and while illinois is in a unique position to see it all unfold, where can you expect the most?

After spending 13 (or 17, depending on where you’re at) years underground feeding from roots, periodical cicadas have started to emerge (at least in central and. The exact timing depends on soil.