The storms are expected to become weaker in the coming days, but another tropical depression is forecasted to form later in the week.

Wutip was a tropical storm in the Gulf of Tonkin Friday evening China Standard Time, the Joint Typhoon Warning Center said in its latest advisory. The tropical storm had sustained wind speeds of 69 miles per hour.

A typhoon changed its path and landed in southern China's Hainan island at a severe tropical storm level. Its maximum sustained winds is 30 meters (98 feet) per second.

Tropical storms feed off heat and moisture, and that begins with warm ocean water—at least 80°F (27°C). But it’s not just about the surface. That warmth needs to extend 150 feet or more below the surface to sustain a growing storm.

Cosme was a tropical storm in the North Pacific Ocean Monday afternoon Mountain time, the National Hurricane Center said in its latest advisory. The tropical storm had sustained wind speeds of 70 miles per hour.

Barbara is expected to continue diminishing through Tuesday. Tropical Storm Cosme is expected to weaken through Thursday morning. Both storms are being tracked through the eastern Pacific Ocean, off the coast of southwestern Mexico, according to the NHC.

Tennessee agriculture officials toured storm-damaged areas, assessing recovery needs after Tropical Storm Helene.

Severe Tropical Storm Wutip entered within 800km of Hong Kong, but is expected to make landfall later on Saturday, forecaster says.