Here's how weather predicts when you will see fireflies

Name: Why thousands of fireflies put on a magical light show each year
Uploaded: 2022-04-28T15:24:37-04:00
Duration: 2 min 18 s
Description: For the synchronous firefly, what appears as a dazzling spring and summertime spectacle is largely a courtship ritual.

For the synchronous firefly, what appears as a dazzling spring and summertime spectacle is largely a courtship ritual.

02:18

FILE: Why thousands of fireflies put on a magical light show each year

For the synchronous firefly, what appears as a dazzling spring and summertime spectacle is largely a courtship ritual.

While the intense summer heat over the Northeast and Ohio Valley has many people feeling uncomfortable and unable to seek relief, it could bring something good: fireflies.

Fireflies, also known as lightning bugs, are known for their bright displays at night. The glow they give off comes from a chemical reaction that occurs in their organs called bioluminescence.

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In the United States alone, there are over 150 species with more in areas like Central and South America, and, in contrast to the name, fireflies are actually beetles.

Fireflies dance above a marsh during the 'Blue Hour' under clear Summer skies. Long exposure.

(Getty Images)

Fireflies don’t just glow to light up the night sky, but as a part of a mating display. Fireflies with the longest and brightest flashes are the ones that attract the most mates.

But how does weather contribute to when these radiant bugs make an appearance? Humid and hot conditions allow lightning bugs to thrive.

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When temperatures are warm and the air is saturated, firefly larvae can stay moist, which is necessary for their survival. Warm temperatures and rain also bring out fireflies’ primary source of food, slugs and snails.