Last week was another largely uneventful swarming week, and the season continues to develop about 3 weeks later than usual. Dragonfly swarms were reported from the following locations last week:
USA:
Port Richey, FL
Lake in the Hill, IL
Amherst, MA
Charlemont, MA
Duxbury, MA (2 reports)
Green Harbor MA
Boscawen, NH
Hampstead, NH
Brigantine Beach, NJ
Villas, NJ
Wrightsville Beach, NC
Narragansett, RI
Fort Worth, TX
Lake Fork, TX
Ralls, TX
Sadler, TX
Waterford, VT
Canada:
Canmore, AB
Here’s the map for this week:
The red pins are static swarms, blue are migratory swarms. Click on the image to make it larger.
Nearly all the activity was either in Texas or in New England last week. All but two of the reports has mentioned big storms or very heavy rains within a few days of the swarms. I think that’s interesting!
Everything is still far behind schedule this year and swarming is just starting to pick up now. I suspect I’ll get the normal surge in swarm reports in 2-3 weeks, but we’ll have to wait and see if things really are just delayed a few weeks or this is an abnormal year overall.
Have a great week, and look for another Swarm Sunday next weekend!
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Have you seen a dragonfly swarm? I am tracking swarms so I can learn more about this interesting behavior. If you see one, I’d love to hear from you! Please visit my Report a Dragonfly Swarm page to fill out the official report form. It only takes a few minutes! Thanks!
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Want more information? Visit my dragonfly swarm information page for my entire collection of posts about dragonfly swarms!
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The Dragonfly Woman 
Hi, like your blog. This isn’t about dragonflies, but on Friday there were huge swarms of flying ants near me (in the UK), and this was during a very hot and sunny afternoon following a morning of the heaviest rain we’ve seen in a long time (almost flooded). I wondered if the rain was their signal – maybe it works for several insects…
It is very likely the rain WAS the signal! Several ant species in Arizona in the US form these massive mating swarms after the first monsoon rain in the summer and you’ll get these huge clouds of them all over the place. It’s an amazing thing to see! So glad you had a chance to see something similar.