Heat Lightning

Captured these clouds full of heat lightning at a Trenton Thunder minor league baseball game in August 2016 without a tripod.

The clouds were to the north but the telephoto lens brought them almost to the ballfield.

Camera: Nikon D5000
Lens: Sigma DC 18-250mm 1:3.5-6.3 MACRO HSM
zoom at 90mm
Exposure: f/5.6 @ 1/25sec
ISO 1250