What classification refers to tropical cyclones with winds from 35 to 64 knots?

Tropical storms are classified as tropical cyclones with sustained winds ranging from 35 to 64 knots. This classification is a crucial part of understanding storm intensity and potential impact. When the wind speeds reach this range, the system is strong enough to pose a significant threat to life and property, warranting close attention and monitoring.

In contrast, tropical depressions are characterized by weaker wind speeds, typically less than 35 knots, indicating that they are not as intense as tropical storms. Hurricanes represent the next level of strength, with winds exceeding 64 knots, indicating a much more severe system. The term "heat wave" does not relate to tropical cyclone classifications at all, as it refers to prolonged periods of excessively hot weather, not wind measurements or storm systems. Thus, recognizing the characteristics that define each classification, particularly the wind ranges, is essential for understanding the nature and potential risks associated with these weather phenomena.