(3) Wisconsin ~ August
The largest wave of reports of clowns in recent history began in a small way in Green Bay, Wisconsin, in early August 2016. A mysterious clown that seemingly came out of someone’s warped sense of humor was spotted in Green Bay, according to photographs making the rounds of the social media. A Facebook page called “Gags – The Green Bay Clown” claimed the first sighting happened August 1, 2016, at 2:00 a.m.
By definition, these clowns were "stalking clowns."
(4) Carolinas ~ August
These reports were classic "Phantom Clowns," and did not seem to be real people dressing up as clowns, i.e. "Stalking Clowns." See, "Phantom Clowns: Classified."
(5) Ohio ~ August
A knife-wielding clown reported in the Northland area might prove a hoax, but Columbus, Ohio, police say they aren't taking any chances. A 14-year-old boy told police that a 6-foot-tall man in dark clothing and a clown mask chased him a short distance as he walked to a school bus stop at about 6:15 a.m. Tuesday, August 30, 2016, said police spokesman Sgt. Rich Weiner. The boy told police that the incident occurred just before sunrise in his neighborhood, near Satinwood and Ironwood drives.
See also, "Phantom Clowns: Ohio."
(6) Georgia and Alabama ~ September
Next, leaping from the Carolinas to Ohio, clown incidents turned up in Georgia and Alabama. On September 14, 2016, McDuffie County deputies in Georgia say Cameron Frails, 12, and his little brother, were walking to a bus stop when they were chased by men donning clown costumes. The next day, on September 15, 2016, authorities locked down Escambia County High School and Flomaton High School in Southern Alabama after clowns threaten students and post gun emojis on Facebook. So-called "Flomo Klowns" were spotted on the premises of both schools. On September 15, 2016, police in Flomaton, Alabama, arrest 22-year-old Makayla Smith and two underage accomplices in connection with the threats to students at Escambia County High School and Flomaton High School. A middle school girl in Athens, Georgia, was arrested on September 21, 2016, after bringing a knife into school. She claims it was for protection against clown attacks.
See also, "Phantom Clowns: Alabama," "Phantom Clown: Macon + LaGrange," and "Phantom Clowns: Greensboro + Green Name Game."
(7) United States ~ September
After the initial sightings, all kinds of encounters with clowns were reported throughout the United States, as can be seen from this summary or this one.
See also, "Precursor to Creepy Clowns: Ronald McDonald."