According to weather.com, these clouds are called hole-punched clouds and are supposed to be "rare cloud formations." http://www.weather.com/news/hole-punch-clouds-20130123 The photos above show several different hole-punched clouds all taken within seconds of each other. The top two photos are the same cloud and clearly look like hole-punched clouds. The third photo from the top shows three hole-punched clouds. The bottom photo shows two hole-punched clouds; it's not as easy to see these but they were clearly hole-punched clouds. Every once in a while I've seen clouds where there is a space of blue but I've never seen these type of clouds until today and then to see so many of them. Pretty cool.