Severe weather watches, whether severe thunderstorm or tornado, are traditionally issued for a period of four (4) to six (6) hours. The National Weather Service may terminate a “watch” early if weather conditions change and the threat of severe weather subsides.
Severe weather warnings, whether severe thunderstorm or tornado, are traditionally issued for periods of thirty (30) minutes to one (1) hour. Warnings are usually allowed to expire on their own, without early termination by the Weather Service.
Residents requesting “ALL Clear” information should be advised to monitor commercial radio and television stations for further weather information, but local government SHOULD NOT issue an “All Clear” statement.
No activation of outdoor warning signals should be used to signify the termination of a weather watch or any kind of an “All Clear” advisory.
