The progression of increasing strength is:
Tropical depression (under 39 mph winds)
Tropical storm (39-73 mph winds)
Hurricane (winds 74 mph or higher)
it started as a tropical disturbance at first, then it became a tropical depression, and a tropical storm, then a hurricane.
The first named storm was Ana (tropical storm); the first hurricane was Bill.
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.
Tropical Depression and then Tropical Storm THEN Hurricane!
tropical disturbance, tropical depression, tropical storm, hurricane
he started as a tropical depression, then he became a tropical storm, then BAM! hurricane...!
Tropical disturbance -> tropical depression -> tropical storm -> tropical cyclone (hurricane). *Hurricane is a local name, for tropical cyclones (official name) that appear in the Atlantic.
Isaac first became a tropical storm on August 21, 2012 having been upgraded from a tropical depression. Isaac remained a tropical storm until August 28 when he became a hurricane. Isaac then weakened back to a tropical storm on August 29 after striking land and then to a tropical depression on August 30.
Yes. Hurricane Andrew was Tropical Depression Three for about a day before becoming Tropical Storm Andrew and then Hurricane Andrew 5 days later.
Hurricane, typhoon, etc.
A tropical storm. Before that it is usually a tropical depression.
tropical disturbance, tropical depression, tropical storm, hurricane