Lightning |
Lightning Safety
Do you know what to do if you are caught in the open during a thunderstorm?
Lightning causes, on average, 54 deaths in the U.S. annually. Plan ahead and always listen to the latest forecast before heading outside. And, remember: You don't have to be right under a thunderstorm to be at risk--if you can hear thunder, you are close enough to be struck! If there is a chance for thunderstorms, make sure you have a place of safety in mind if a storm should develop.
When Inside:
- Avoid using corded telephones (except for emergencies), electrical appliances, and electronic equipment.
- Do not take a bath or shower.
- Go inside a building or all-metal vehicle
- Avoid water (swimming pools, lakes & rivers), beaches & boats
- Stay away from doors, windows, metal indoor fixtures & electrical devices
- Avoid open high ground and isolated large trees
- Do not lean on vehicles. Get off bicycles & motorcycles.
- Use the 30-30 rule for outdoor activityThe 30-30 rule: Count the seconds between seeing the lightning and hearing the thunder. If this time is 30 seconds or less, then the lightning is close enough to be a threat. Seek shelter immediately. After seeing the last lightning flash, wait 30 minutes before leaving shelter. More than half of all lightning deaths occur after the thunderstorm has passed. Stay in a safe area until you are sure the threat has passed.
- Go to a safe shelter immediately such as inside a sturdy, enclosed building. A hard top automobile with the windows up can also offer protection.
- If you are boating or swimming, get out of the water immediately and move to a safe shelter away from the water!
- Avoid isolated trees or other tall objects, bodies of water, sheds, fences, convertible automobiles, tractors, and motorcycles.
- There is no safe place outdoors in a thunderstorm!
- All thunderstorms produce lightning and are dangerous
- Wisconsin averages over 30 days each year with thunderstorms
- Lightning bolts can travel 20 miles before striking the ground
- Most lightning deaths occur when people are caught outdoors
- Lightning often strikes as far as 10 miles away from any rainfall
- High winds, rainfall and a darkening cloud cover are the warning signals for possible cloud-to-ground lightning strikes