Tropical Storm Arlene was simply a tropical storm. That is a category unto itself.
The first named storm was Ana (tropical storm); the first hurricane was Bill.
Emily
Emily
A hurricane will start as a Tropical Wave. It then becomes a Tropical Depression. A TD is given a number but not a name. Once the TD reaches 39 mile per hour winds its given a name and becomes a Tropical Storm. After reaching 74 mile per hour winds it becomes a hurricane.
The category of the storm - depends on the wind speed, and barometric pressure reading.
Emily
Hurricane Fey would be categorized as a tropical storm.
In order they are : tropical disturbance, tropical depression, tropical storm, sustained winds over 74 mph (hurricane/typhoon).
Pablo never became a hurricane. It was only ever a tropical storm.
Tropical storms gain energy from evaporation from warm ocean water. If the water is warm enough and there is little wind shear to interfere with a storm's development then it will intensify. When sutained winds reach 74 mph the storm is classified as a category 1 hurricane. When winds reach 156 mph the storm is classified as a category 5 hurricane.
Hurricane Katrina started out as a tropical depression, as most hurricanes do, then strengthened to a tropical storm and then a category 1 hurricane. Nor hurricane ever actually starts at hurricane intensity, and they have to go through category 1 to get to the other categories.
Yes. There was a Tropical Storm Elaine in the Atlantic Ocean in September of 1974.