Yesterday started with a gray cloud cover and comfortable temps.  As the day wore on, the sun broke through and the heat started to build.  Planning to take advantage of near-perfect fishing weather, we drove north about 50 miles to East Rush Lake.  We enjoyed a dinner in the boat between pulling in sunfish and crappies, and I was looking forward to the sunset.  Slowly, to the west, we could see storm clouds moving in, leaving a clear demarcation in the sky — blue sky white clouds and sunshine being taken over by dark gray and purple with white clouds developing within.  Our timing was perfect; we made our way across the lake to the boat landing, trailered the boat, and then watched the far shore as the lightning and rain moved across the lake.