When is a tornado or severe thunderstorm watch issued?

A tornado or severe thunderstorm watch is issued whenever conditions exist for severe weather to develop. Watches are usually for large areas about two-thirds the size of Lower Michigan and are usually two-to-six hours long. Watches give you time to plan and prepare.

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1. What is a severe thunderstorm?
2. What is a tornado?
3. What is the difference between a tornado and a funnel cloud?
4. How many tornadoes usually occur in Michigan every year?
5. When do tornadoes generally occur?
6. How fast do tornadoes travel?
7. How far do tornadoes travel once they touch the ground?
8. When is a tornado or severe thunderstorm watch issued?
9. When is a tornado or severe thunderstorm warning issued?
10. What is a special marine warning?
11. How do I find out about a warning if my electricity is already out?