Just about to emerge from this season's first heat wave, much of the Eastern United States saw soaring air temperatures this week, which in turn led to significant increases in soil temperatures. As a result, emergences of the periodical cicada (or magicada) which emerges when soil temperatures stabilize at 64 degrees, are being more commonly seen across much of the east coast.
The web site magicicada.org allows individuals to report sightings of these long-awaited bugs and plots the 500 most recent of these sightings on a map. In constrast to previous weeks, virtually all of the currently plotted sightings are from user reports over the last few days. Sightings are numerous throughout northern and central Virginia, central Pennsylvania and southern Connecticut, with particularly high numbers of sightings around Washington D.C., northern New Jersey and New York City.