Because they happened at night, the eruptions could only be detected in thermal infrared imagery; high temperatures appear black, while lower temperatures are white. (discovermagazine.com)
An animation of infrared imagery from the GOES - 16 weather satellite shows the evolution of Hurricane Harvey between Aug. 25 and 28 2017. (blogs.discovermagazine.com)
This animation shows the GOES - East infrared imagery from April 1 - 30, along with the locations of each tornado that formed during the time (symbolized as red dots). (dotearth.blogs.nytimes.com)