The storm clouds literally rolled in as we drove along on the highway. Soon we found ourselves in heavy rain and high winds. The lightening brightened up the skies momentarily but mostly it was pretty dark and visibility was not good. Traffic slowed considerably; some stopped alongside the road. It didn't take long, maybe twenty minutes, until we reached the end of the storm's strength and the sun shone brightly again.
With the low light of the stormy sky ahead, I chose to use a large aperture to allow for as much light as possible at a shutter speed of 1/60. I couldn't slow my shutter speed seeing as I was in a moving vehicle while shooting.
To gain a little more brightness I bumped up my ISO to 200. I tend to shy away from increasing my ISO above the 100 standard because I am not a fan of the grainy result. In processing I reduced the noise as best I could without losing too much clarity.