convective_defs

Watch, Warning, and Advisory Definitions

Recent Watches/Warnings/Advisories for Southeast Michigan

Convective Definitions

Tornado Watch

The Storm Prediction Center (SPC) issues Public Tornado Watches to alert the public, media and emergency managers to organized thunderstorms forecast to produce three or more tornadoes or any tornado which could produce EF2 or greater damage.

Severe Thunderstorm Watch

The Storm Prediction Center (SPC) issues Public Severe Thunderstorm Watches to alert the public, media and emergency managers to organized thunderstorms forecast to produce six and more hail events of 1 inch (quarter) diameter or greater, or damaging winds of 50 knots (58 mph) or greater.

Tornado Warning

Tornado Warnings are issued when there is radar indication and/or reliable spotter reports of a tornado.

Severe Thunderstorm Warning

Severe Thunderstorm Warnings are issued when there is radar indication and/or reliable spotter reports of hail of 1 inch (quarter) diameter or greater, and/or wind gusts of 50 knots (58 mph) or greater.