Risk Level 
Definition 

None 
No thunderstorm wind risk. 

Limited 
Risk for subsevere wind gusts (less than 58 mph)
or
Probability of severe wind gusts (58 mph or greater) within 25 miles of a point:
Less than 15% 

Elevated 
Probability of severe wind gusts (58 mph or greater) within 25 miles of a point:
Equal to or greater than 15% 

Significant 
Probability of severe wind gusts (58 mph or greater) within 25 miles of a point:
Equal to or greater than 45% 

Extreme 
Probability of severe wind gusts (58 mph or greater) within 25 miles of a point:
Equal to or greater than 60% 