Percent casualties minus damage reports by month. A few more casualties in July than June. Since this location is at 1 N, the midsummer concept is not relevant. The largest number of fatalities are in January, which had a slightly larger number of deaths than in December. Monthly totals of number and percentage of annual total of deaths, injuries, casualties, and damage reports due to lightning in the United States from 1959 through 1994.
Most regions show damage reports to be spread somewhat more widely through the year than casualties.
Casualties and damages in the northern regions of the country tend to have narrower distributions centered on summer than regions in the southern US due to a shorter thunderstorm season in colder regions. The broadest monthly distributions are in the Southern Plains. Figure 27 shows the differences between monthly percentage frequencies in the Northern Rockies, Northern Plains, Midwest, and Northeast, and percent frequencies in the Southern Rockies, Southern Plains, and Southeast. Maps of these two categories are also given by state in Figure 29 based on Table 26 . The higher annual ranks in the Northeast are much lower, most likely due to less lightning during these spring months than elsewhere.