Which storm is characterized by severe conditions and high winds, typically forming as a narrow storm?

The correct answer is a tornado. Tornadoes are unique atmospheric phenomena characterized by their intense winds and the ability to cause severe destruction over a relatively narrow path. They form during severe thunderstorms, specifically in conditions where warm moist air at the surface converges with a layer of colder, drier air aloft. This combination creates instability and can lead to the development of rotating columns of air that extend from the base of the thunderstorm.

Tornadoes can produce exceptionally high wind speeds, capable of tearing apart structures and uprooting trees. Their formation is distinct from other storms, as they often develop rapidly and can pose immediate threats to safety due to their unpredictable nature and the short amount of time available for warnings.

In contrast, hurricanes are larger storm systems that can produce strong winds and heavy rainfall over a broad area but are not narrow like tornadoes. Thunderstorms encompass a range of weather phenomena and can include tornadoes but are not specifically defined by them. Lightning storms refer to storms that exhibit electrical discharges and do not necessarily indicate severe wind conditions or the formation of tornadoes. Thus, the characteristics of severe conditions and high winds in a narrow storm context align specifically with tornadoes.