CG lightning can occur with both positive and negative polarity. The polarity is that of the charge in the region that originated the lightning leaders. An average bolt of negative lightning carries an electric current of 30,000 amperes (30 kA), and transfers 15 coulombs of electric charge and 500 megajoules of energy.
Statewide, 19 wildfires greater than 1,000 acres in area are currently raging, according to the NIFC. The active fires have ravaged more than 630,000 acres, destroying approximately 200 homes and threatening another 12,000, according to Washington state officials.
Three fires are burning in the Bridger-Teton National Forest in northwest Wyoming. The largest is the Green Fire at nearly 1,000 acres. About 130 firefighters are battling the fire. The state's largest fire so far this summer is the Hardluck Fire in the Shoshone National Forest. It has burned more than 24 square miles.