https://phys.org/news/2018-09-nasa-noaa-satellite-affecting-helene-azores.html

On Sept. 14 at 1:36 a.m. EDT (0536 UTC) the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite captured an infrared image of Tropical Storm Helene. VIIRS showed wind shear was pushing all of the strongest storms northeast of center. In that quadrant of the storm, the coldest cloud top temperatures of strongest thunderstorms were as cold as minus 50 degrees Fahrenheit/minus 45.5 degrees Celsius.

The National Hurricane Center or NHC said "at 11 a.m. EDT (1500 UTC) the center of Tropical Storm Helene was located near latitude 32.9 degrees north and longitude 36.3 degrees west. Helene is moving toward the north near 23 mph (37 kph). A turn toward the north-northeast is forecast Saturday followed by a turn toward the northeast by Sunday night.