Severe Thunderstorm
Severe thunderstorms are officially defined as storms that are capable of producing hail that is an inch or larger or wind gusts over 58 mph. Hail this size can damage property such as plants, roofs and vehicles. Wind this strong is able to break off large branches, knock over trees or cause structural damage to trees. Some severe thunderstorms can produce hail larger than softballs or winds over 100 mph, so please pay attention to the weather so you know when severe storms are possible. Thunderstorms also produce tornadoes and dangerous lightning; heavy rain can cause flash flooding.
When thunder roars, go indoors!
If you are under a thunderstorm warning:
- Move from outdoors into a building or car with a roof.
- Inside a building, find an interior room or hallway, staying away from windows and doors. Stay away from larger than normal rooms.
- Pay attention to alerts and warnings.
- Avoid using electronic devices connected to an electrical outlet.
- Pay attention to authorities, weather forecasts, and MC Alert for information on whether it is safe to go outside and instructions regarding potential flash flooding.
- Watch for fallen power lines and trees. Report them immediately.
- If you absolutely cannot get to safely, you can slightly lessen the threat of being
struck by lightning with the following tips. But don't kid yourself--you are NOT safe
outside.
- Avoid open fields, the top of a hill or a ridge top.
- Stay away from tall, isolated trees or other tall objects. If you are in a forest, stay near a lower stand of trees.
- If you are in a group, spread out to avoid the current traveling between group members.
- If you are camping in an open area, do not set up camp in on high ground. Remember, a tent offers NO protection from lighting.
- Wait 30 minutes after the last sound of thunder, before going back outside
For more information on thunderstorm safety, visit Ready.gov new window or Weather.gov.