Swarm Sunday (on Monday): 8/30/15 – 9/12/15

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Reporting on two weeks of data once again, but there’s been a lot going on recently! Swarms were reported from the following locations over the last two weeks:


El Cajon, CA
Foresthill, CA
Studio City, CA
Ventura, CA
Branford, CT
Clinton, CT
East Haven, CT
Middletown, CT
Redding, CT
Daytona Beach, FL
Britt, IA
Council Bluffs, IA (2 swarms)
Davenport, IA
Dubuque, IA
Grinnell, IA
Osceola, IA
Oskaloosa, IA
Sergeant Bluff, IA
Sioux City, IA
Traer, IA
Waukee, IA
Arlington Heights, IL
Beardstown, IL
Beecher IL
Bensenville, IL
Bloomington, IL
Crestwood, IL (2 swarms)
Dawson, IL
Dekalb, IL
Downs, IL
Geneva, IL
Germantown Hills, IL
Gurnee, IL
Homewood, IL (2 swarms)
Jacksonville, IL
Lawrenceville, IL
Liberty, IL
Mackinaw, IL
Midlothian, IL
Monmouth, IL
Oak Forest, IL
Oak Park, IL
Oakwood, IL
Philo, IL
Silvis, IL
St. Joseph, IL (3 swarms)
Sterling, IL
Sycamore, IL
Tinley Park, IL (2 swarms)
Urbana, IL (2 swarms)
Western Springs, IL
Wilmette, IL
Arcadia, IN
Centerville, IN
Cowan, IN
Fowlerton, IN (2 swarms)
Frankfort, IN
Laporte, IN
Lebanon, IN
Milton, IN
Rushville, IN
South Bend, IN
Terre Haute, IN
Tipton, IN
Vevay, IN
Atchison, KS
Bonner Springs, KS
Burrton, KS
Girard, KS
Goddard, KS
Newton, KS
Overland Park, KS
Ashland, KY (2 swarms)
Brooksville, KY
London, KY
Shelbyville, KY
Amesbury, MA
Dighton, MA
Huntington, MA
Ipswich, MA (2 swarms)
Newbury, MA
Newburyport, MA
Clarksburg, MD
Baroda, MI
Dowling, MI
East Tawas, MI
Lasalle , MI
Roseville, MI
Apple Valley, MN
Butterfield, MN
Dennison, MN (2 swarms)
Lakeville, MI
Blue Springs, MO
Cameron, MO
Clinton, MO
Edina, MO
Holt, MO
Kansas City, MO (3 swarms)
Kirksville, MO
Lee’s Summit, MO
Memphis, MO
Odessa, MO
Platte City, MO
Plattsburg, MO
Richland, MO
Richmond, MO
Troy, MO
Warrensburg, MO
Asheville, NC
Bismarck, ND
Eagle, NE
Firth, NE
Omaha, NE
Exeter, NH
Hampton, NH
Kensington, NH (3 swarms)
Moultonborough, NH
South Hampton, NH
Alloway Township, NJ
Livingston , NJ
Long Valley, NJ
Paramus, NJ
Ringoes, NJ
Somerset, NJ
Trenton, NJ
West Caldwell, NJ
Woolwich Township, NJ
Bayside, NY
Cleveland, NY
Cutchogue, NY
Greenburgh, NY
Lacona, NY
Warners, NY
Brookville, OH
Butler, OH
Chauncey, OH
Cincinnati, OH (3 swarms)
Columbus, OH (8 swarms)
Convoy, OH
Covington, OH
Cumberland, OH
Dayton, OH (3 swarms)
Delaware, OH (2 swarms)
Derby, OH
Dublin, OH (4 swarms)
Dunkirk, OH
Enon, OH
Fostoria, OH
Frankfort, OH
Galloway, OH (2 swarms)
Hartford, OH
Lancaster, OH
Lewis Center, OH (2 swarms)
Lynchburg, OH
Madeira, OH
Mount Victory, OH
New Holland, OH
New Madison, OH
New Richmond, OH
Plain City, OH
Sylvania, OH
Tontogany, OH
Upper Sandusky, OH
Utica, OH
Wilmington, OH
Milford. OH
Allentown, PA
Avondale, PA
Huntingdon Valley, PA
Knoxville, PA
Macungie, PA
Willisport, PA
Simpsonville. SC
Chattanooga, TN
Mountain City, TN
Georgetown, TX
Port Allen, TX
Batesville, VA
Big Stone Gap, VA
Fairfax, VA
Lebanon, VA
Bellows Falls, VT
Granton, WI
Madison, WI
Milwaukee, WI
Monroe, WI
Huntington, WV


Burlington, ON
Oakville, ON
St. George, ON
Toronto, ON (2 swarms)

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

8.30.15 to 9.5.15

9.6.15 to 9.12.15

Click the maps to enlarge!

We’re still a little light on migratory swarm reports this year, but the dragonflies do at least appear to be shifting southward finally.  Last week, the swarms went from being quite abundant in the Great Lakes region and upper New England to the upper midwest, Ohio, Kentucky, and Tennessee.  There have been very few reports from the southern states at all this year, but people in the Mid-Atlantic state, the Deep South, Arkansas, and Texas are likely to start seeing a lot more dragonflies over the next week to two weeks as the dragonflies from the northern part of the country start making their way further south.

Still no western migration!  Could start any day.  I’ve been keeping a close eye on all of the northwestern dragonfly listservs and online groups in addition to what’s reported here and there’s so far nothing to report from that area.

Given the big number of reports over the last two weeks, I think the season has peaked and we’re headed into the fall slump this week or next week.  Still, keep an eye out for swarms!  You never know when and where you might see one, and I hope you’ll report any you 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