Cumulonimbus Cell Forms In Hot Conditions

With temperatures simmering around 97 degrees, this storm cell--sporting a long wispy anvil--was forming in NW Dubuque County, Iowa around 4:08 PM, Friday, August 30, 2013. The camera's perspective was from just east of Faulkner Avenue and Montgomery Circle in northeast Marion, Iowa. The images look northeast. This cell was not severe-warned, but the distant cell (seen at right in the top image) located in the Milwaukee, Wisconsin area was.