Dry, hot summer days make the natural environment especially vulnerable to bush fires. When combined with Lag Ba'Omer - a Jewish holiday that is all about making a pyre at night, bush fires are imminent. Since Lag Ba'Omer took part on the weekend this year, pyres took place for three days instead of the usual one day holiday. Firemen have extinguished around a thousand fires per day, probably without having much sleep.
The fire in this image took place in the area of Modi'in. This speecific bush fire wasn't even the largest that took part that day - another fire burnt almost ten thousand acres in the Lachish area.
Click the image to enlarge.