Important Storm Terms

Florida Hurricane Microshield IAQHurricane Terms:

· Tropical Depression – an organized system of clouds and thunderstorms with a defined circulation and maximum sustained winds of 38 mph (33 knots) or less.

· Tropical Storm – an organized system of strong thunderstorms with a defined circulation and maximum sustained winds of 39 to 73 mph (34-63 knots).

· Hurricane – a warm-core tropical cyclone with maximum sustained winds of 74 mph (64 knots) or greater.

· Eye – center a hurricane with light winds and partly cloudy to clear skies. The eye is usually around 20 miles in diameter, but can range between 5 and 60 miles.

· Eye Wall – location within a hurricane where the most damaging winds and intense rainfall are found.

· Severe Thunderstorm – a thunderstorm with winds 58 mph or faster or hailstones three-quarters of an inch or larger in diameter.

· Tornadoes – violent rotating columns of air that touch the ground; they are spawned by large severe thunderstorms. They can have winds estimated from
100 to 300 mph.

· Tornado Watch – tornadoes and severe thunderstorms are possible.

· Tornado Warning – tornadoes are detected in your area. Take shelter!

John P. Lapotaire, CIEC
•  Certified Indoor Environmental Consultant
•  Microshield Environmental Services, LLC

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