Tropical Depression 05W briefly reached tropical storm status overnight on June 5 into June 6, and then weakened back to a depression at 5 a.m. EDT (0900 UTC).
Once 05W reached tropical storm status it was named "Ewiniar."
NASA's Aqua satellite captured infrared imagery that provided clues that the storm would strengthen.
Infrared light provides temperature data and that's important when trying to understand how strong storms can be.
The higher the cloud tops, the colder and the stronger they are.
AIRS data showed coldest cloud top temperatures in thunderstorms flaring east of 05W's center were warming, indicating weakening.