Abstract
Seismic and solar-geomagnetic variables that involved absolute measures and the percent change in these measures during 6-mo. intervals for the years 1952 and 1969 were used to predict numbers of UFO reports within the six states surrounding the New Madrid area in the central U.S.A. Expected values from sample optimal equations with multiple rs larger than 0.83 involving 5 or 6 lagged variables were compared to observations not involved with calculation of the equations. Optimal equations predicted all of the major “UFO flaps” within this region as well as some other minor increases not evident in the observed measures. Predicted UFO variations for the years 1970 to 1982 are presented.