Dual Brood Cicada Emergence: A Rare Occurrence in 2024

Unique Dual Appearance of Broods XIX and XIII

This spring, two broods of cicadas, known as Broods XIII and XIX, will emerge simultaneously in the Midwest and Southeast regions of the United States. This rare dual appearance occurs only every 221 years, showcasing a remarkable natural phenomenon.

Emergence Conditions and Timing

The cicadas' emergence is triggered by the soil temperature reaching 64 degrees Fahrenheit at a depth of 8 inches underground. Typically beginning in mid-May, they will emerge over several weeks, forming a massive cloud of vibrant colors and buzzing sounds.

Projected Emergence Areas

Broods XIII and XIX are projected to emerge in numerous states, including Ohio, Indiana, Illinois, Tennessee, Georgia, and Alabama. Interactive maps with detailed locations can be found online.

Ecological Significance

Cicadas play a vital role in the ecosystem by aerating the soil and providing a food source for birds, mammals, and other wildlife. Their emergence also stimulates plant growth, as their feeding habits help distribute nutrients.

Safety Precautions

While cicadas are generally harmless, people with allergies or respiratory sensitivities should take precautions during their emergence. Wear protective clothing and use insect repellent if necessary.

Witnessing the Spectacle

The dual emergence of Broods XIII and XIX is a truly awe-inspiring sight. For those interested in witnessing this natural wonder, it's recommended to visit wooded areas during the peak emergence period. Bring binoculars, cameras, and a sense of adventure to capture the moment.