Comments by "MrEkzotic" (@MrEkzotic) on "Multiple fatalities reported in St. Lucie County after tornado outbreak as Milton makes landfall" video.
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@Aaronblkgt Tornadoes sometimes occur before or during hurricanes due to the interaction of various atmospheric conditions created by the hurricane itself. Here are the main reasons why this happens:
1. Hurricane's Outer Bands: The outer rain bands of a hurricane contain thunderstorms, which can produce tornadoes. These bands of storms bring instability and significant wind shear (changes in wind direction and speed with height), two key ingredients for tornado formation.
2. Wind Shear: Hurricanes create strong wind shear, particularly in the storm's outer bands, where the wind speed and direction change rapidly at different altitudes. This creates rotation in thunderstorms, which can lead to tornadoes.
3. Instability: As hurricanes move inland, they bring warm, moist air from the ocean. When this warm air interacts with cooler, drier air from land, it can create the instability needed for thunderstorms to form. The resulting thunderstorms, coupled with the wind shear, can then spawn tornadoes.
4. Landfall: Tornadoes are more common when hurricanes make landfall because of the added friction between the storm and the land, which enhances the wind shear in the lower atmosphere. This increased shear can contribute to the formation of tornadoes.
Tornadoes associated with hurricanes are usually weaker and shorter-lived than those produced by supercell thunderstorms but can still cause significant damage. The threat of tornadoes is highest in the outer parts of the hurricane and particularly in the front-right quadrant relative to the storm's direction of movement.
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