Not THAT Much Of A Cool Down!

After a day's high temperature of 104 degrees F on Wednesday, July 25, 2012, these images show gust front storm clouds approaching from the west, promising a welcomed cool down. Although current air temperatures were still around 87 degrees at this time, the continuous strains of Christmas music was heard blaring into the night from the nearby neighborhood Bowman Woods Swim & Racquet Club on Boyson Road at Brentwood Drive NE in Cedar Rapids, Iowa--presumably a "Christmas-In-July" novelty statement because of the sweltering weather. These images look west across Bowman Woods Park toward Bowman Woods Elementary School. The top image, shot at 9:36 PM, shows backlit clouds from lightning. The bottom image, shot at 9:51 PM,  shows a weak and ragged shelf cloud forming on the leading edge of the gust front. The top image is a 7-second exposure at f/5.6, 320 ISO and 18mm focal length; bottom image is an 8-second exposure at f/6.3, 320 ISO and 18mm focal length.