Swarm Sunday (on Monday): 8/16/15 – 8/29/15

Dragonfly Swarm Project logo

Reporting on two weeks of data again – and a day later than I’d like – but here’s the latest update!  Swarms were reported from the following locations over the last two weeks:


Napa, CA
Santa Barbara, CA
Erie, CO
Ansonia, CT
Branford, CT
Colebrook, CT
East Hartland , CT
Guilford, CT
Norfolk, CT (2 swarms)
Woodbury, CT
Ellijay, GA
Cedar Rapids, IA
Davenport, IA
Muscatine, IA
Springdale, IA
Swisher, IA
Waukon, IA
Galesburg, IL
Skokie, IL
Bloomfield, IN
Hamilton, IN
Terre Haute, IN
Olathe, KS
Burlington, KY
Colrain, MA
Ipswich, MA
Manchester, MA
North Adams, MA
Pittsfield, MA
Plymouth, MA
Raynham, MA
Rowley, MA
Sandisfield, MA
Scituate, MA
West Brookfield, MA (2 swarms)
Williamsburg, MA
Winchendon, MA
Lebanon, ME
Portland, ME
Waldoboro, ME
Ann Arbor Township, MI
Twin Lake, MI
Troy, MO
Webb City, MO
New Bern, NC
Oak Island, NC
Elk City, NE
Omaha, NE (2 swarms)
Amherst, NH
Portsmouth, NH
Asbury Park, NJ
Voorhees, NJ
Bearsville, NY
Brooklyn, NY
Gouverneur, NY
Hancock, NY
Napanoch, NY
New York, NY
Waterloo, NY
Woodstock, NY
Chillicothe, OH
Poland, OH
Quincy, OH
Downingtown, PA
Shinglehouse, PA
Susquehanna, PA
East Greenwich, RI
Warwick, RI
Austin, TX
Kingsville, TX
Seminole, TX
Colchester, VT
South Newfane, VT
Black Earth, WI
Brookfield, WI
Burlington, WI


Tatamagouche, NS
Dwight, ON
Hamilton, ON
Hamilton, ON


Dresden, Saxony

And this one didn’t happen in this two-week period, but I can’t help but post it anyway because I’m really excited about this one:



And here are the US maps for the last two weeks:

8.16.15 to 8.22.15

8.23.15 to 8.29.15

Click the maps to enlarge!

Not many migratory events have been reported yet, but I think that’s coming soon, sometime in the next week or two.  The activity over the past few weeks is the sort of conditions we normally see right before the migration of the common green darners – lots of reports from the Great Lakes region, a few in Nebraska (that’s always a good indicator for some reason!), and dragonflies massing in New England.  Next week or the week after, I’d expect those masses to start shifting southward so that we’ll see a lot more activity in Virginia, the Carolinas, Missouri, and Arkansas as the dragonflies start following the eastern coast and the midwestern rivers toward the Gulf of Mexico.

No indication that the western migration has begun at all yet!  I start looking for reports of dragonflies swarming in Montana, Idaho, and southern Canada and you’ll usually see the Washington-Oregon migration of the variegated meadowhawks shortly afterwards.  No sign of anything so far this year though!

All this means that we’re heading into the prime swarming season very soon.  If you see a swarm, please report it.  We can follow the big swarms down the coasts and rivers if people report the swarms they see!


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!


Want more information? Visit my dragonfly swarm information page for my entire collection of posts about dragonfly swarms!


Unless otherwise stated, all text, images, and video are copyright © C. L. Goforth