https://phys.org/news/2018-07-tropical-storm-chris-nasa-satellite.html

The MODIS or Moderate Resolution Imaging Spectroradiometer instrument aboard NASA's Aqua satellite showed cloud top temperatures as cold or colder than minus 70 degrees Fahrenheit (minus 56.6 degrees Celsius). Cloud tops with temperatures that cold have the potential to generate very heavy rainfall.

There are no coastal watches or warnings in effect, however, the National Hurricane Center (NHC) cautioned that interests along the coast of North Carolina and in Atlantic Canada should monitor the progress of this system.