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A map of where to expect cicadas in 2024 and which broods will hit Illinois

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mystery-ak:
 A map of where to expect cicadas in 2024 and which broods will hit Illinois
The dual explosion of cicadas, which hasn't been seen for centuries, will hit much of the state, but in one portion, an overlap of the two major broods is possible
By NBC 5 Staff   • Published 2 hours ago   • Updated 4 hours ago   

Illinois will see a unique situation when two massive broods of cicadas emerge across the U.S. this year, but where will the biggest emergence be seen?

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?

This dual emergence hasn't been seen for centuries, with Brood XIII and Brood XIX both set to pop out of the ground simultaneously. The rare occurrence, which could bring billions of cicadas to the surface, last happened 221 years ago.

While most of Illinois and the Chicago area will see at least one brood's emergence, a narrow part of the state could see an overlap of both.

Here's what we know so far:
Where will two periodic cicada broods emerge in the U.S. this year?

"This is like the year for Illinois," cicada expert Catherine Dana, an affiliate with the Illinois Natural History Survey, told NBC Chicago. "We are going to have cicadas emerging all over the state."

The Northern Illinois Brood, or Brood XIII, will be most seen in parts of northern Illinois and Indiana, and possibly even in Wisconsin, Iowa and parts of Ohio. This brood will be the most prominent in the Chicago area for the upcoming emergence.

Meanwhile, Brood XIX, or the Great Southern Brood cicadas, have a more widespread population, covering parts of Missouri, Illinois, Louisiana, North Carolina, Virginia and Maryland.

"Brood XIX is arguably the largest (by geographic extent) of all periodical cicada broods, with records along the east coast from Maryland to Georgia and in the Midwest from Iowa to Oklahoma," the University of Connecticut reports. "Although 13- year cicadas are generally considered to have a southern distribution, the northernmost known record of this brood is in Chebanse, IL, roughly 75 miles from Chicago’s Loop."

While the two broods have different emergence regions, there could be some locations that see an overlap of both.

more w/map
https://www.nbcchicago.com/news/local/a-map-of-where-to-expect-cicadas-in-2024-and-which-broods-will-hit-illinois/3360052/

mystery-ak:
I hate these things...

mountaineer:

--- Quote from: mystery-ak on February 19, 2024, 06:46:54 pm ---I hate these things...

--- End quote ---
Ditto. We'll probably see them, too. They seem to come more frequently than every 17 years.

roamer_1:
Hee Hee Hee...

I'll just sit up here on my mountain and feel sorry for y'all. Really.

I ain't seen a cicada in thirty years.

Hoodat:

--- Quote from: mountaineer on February 19, 2024, 07:44:47 pm ---Ditto. We'll probably see them, too. They seem to come more frequently than every 17 years.

--- End quote ---

There's also a 13-year cicada.  This year is special because we are getting hit with both.

Math tells me that these are cicada years since 1930:

1933
1939
1946
1956
1959
1972
1973
1985
1990
1998
2007
2011
2024

This averages to a cicada year every 7-8 years.

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