Giant bees in my yard.
I am seeing these giant bees/hornets in my yard this year. They are huge! Probably 1 1/2 to 2 inches in length. Their body is plump unlike the normal hornets. They are the standard black and orangey yellow. I have seen them on my trumpet bush (which is very large and houses many bird nests) and also on the ground. I am fearful for my Grandchildren and my puppy.
I believe we have identified these "monsters". We found the nests, probably 50 or so. They are nesting in the ground at my nextdoor neighbors house. The house is unoccupied at this time and the son came to cut the grass an discovered them. He has killed them... probably a hundred of them. Thank you for the forum.
Bay County Michigan
A) Cicada killer wasps (https://www.canr.msu.edu/news/cicada_killer_wasps_are_no_cause_for_concern )
B) Great golden digger wasp (https://uwm.edu/field-station/great-golden-digger-wasp-family-sphecidae/ )
Do either of these look like the wasps you found? Both are solitary. Though large and fierce looking, they pose minimal risk to humans as they feed on other insect items and unlikely to sting humans.