In advance of the potential for strong to severe storms, the Storm Prediction Center will issue a report that is known as their convective outlook. This is used to help highlight the regions that will have the greatest ingredients for storm development.
One of the more commonly used outlooks is the ‘Slight Risk’.
This means a few storms could reach severe criteria; wind damage is possible as well as hail up to one inch in diameter with an isolated spin-up tornado.
If the Storm Prediction Center believes there is a greater risk for severe storms, they will elevate a region to an Enhanced Risk.
This indicated that within the region highlighted, there could be more numerous severe storms and the systems potential longevity is greater. There is also a higher risk for several damage reports, hail one to two inches in diameter and a few tornados possible.