We set off from Logan's Pass on Going-to-the-Sun-Road in Glacier National Park as a storm rolled up the valley. Lightning began to light up the sky and we knew we needed to try to capture images. I was lucky to capture this image just as the lightning came around the bend. Soon after we were hit by a stiff cold breeze then the sky immediately opened up with rain. The lightning was a forewarning of what was coming up that valley straight towards us. We rushed back to the car all hoping that we caught something. I did and quite pleased with the resulting image; forewarning. There was a full moon that night and scores of cyclists were riding the road through the park and the oncoming storm.