A severe thunderstorm warning is a critical alert issued by weather forecasting agencies to inform the public of imminent danger from a severe thunderstorm.1 Here’s a breakdown of what that means:
Key Characteristics of a Severe Thunderstorm:
- Large Hail: Hailstones of one inch in diameter or larger.2
- Damaging Winds: Wind speeds of 58 mph (50 knots) or greater.3
- Potential for Tornadoes: While not all severe thunderstorms produce tornadoes, they can, and sometimes do.4
- Heavy Rainfall: Which can lead to flash flooding.5
What a Severe Thunderstorm Warning Means:
- It indicates that a severe thunderstorm is occurring or is imminent in the warned area.6
- It’s a call to action to take immediate precautions to protect yourself and your property.7
- These warnings are typically issued for a specific area and for a limited time.8
Key Differences: Watch vs. Warning:
- Severe Thunderstorm Watch:
- Means conditions are favorable for severe thunderstorms to develop.9
- It’s a time to be prepared and stay informed.
- Severe Thunderstorm Warning:
- Means a severe thunderstorm is occurring or is imminent.10
- It’s a time to take immediate action and seek shelter.11
Safety Precautions:
- Seek shelter in a sturdy building.12
- Stay away from windows.13
- Avoid electrical appliances and plumbing.14
- If you’re outside, seek shelter immediately.15
- If in a vehicle, pull over safely, and stay in the vehicle.
In essence, a severe thunderstorm warning is a serious alert that should be taken seriously.16