Notes for Neutral - El Nino Summer of '23
Prevailing analogues indicate normal temperatures (within a degree of normal in Southeast Lower Michigan), while 4 summers averaged below normal (more than a degree below) and 2 summers averaging above normal (more than a degree above normal.
Upper wind flow/jets were dominated by ridging across the Midwest northward into Canada, shifting across the country from the Great Lakes to the Western US/Canada with the dominance from Mid-West northward into Canada west into the Western US.
Drier than normal (more than an inch below) prevailed in 7 summers out of 11. Average departure was nearly two inches below normal with the entire sample of 11. Normal rainfall fell in 4 summers and just 1 summer received above normal rain (more than an inch above). All summer months (June - Aug) showed averages of rainfall, 1/2 to an inch below.