Severe Thunderstorms
Severe thunderstorms are officially defined as storms that are capable of producing hail that is an inch or larger and/or wind gusts over 58 mph. Thunderstorms also produce tornadoes and dangerous lightning; heavy rain can cause flash flooding.
- Know your risk.
- Make a plan.
Severe Thunderstorm Watch
- Be prepared!
- There is a possibility of severe thunderstorms.
- A severe thunderstorm watch typically lasts 4 to 8 hours.
Severe Thunderstorm Warning
- TAKE ACTION!
- Severe weather is happening.
- There may be considerable or destructive damage. A severe thunderstorm warning typically lasts 1 hour.
Stay Safe During Thunderstorms & Lightning
- When thunder roars, go indoors! Move from outdoors into a building or car with a roof.
- Pay attention to alerts and warnings.
- Avoid using electronic devices connected to an electrical outlet.
- Avoid running water.
- Turn Around. Don’t Drown! Do not drive through flooded roadways. Just six inches of fast-moving water can knock you down, and one foot of moving water can sweep your vehicle away.
Stay Safe After Thunderstorms & Lightning
- Pay attention to authorities and weather forecasts 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.
