A severe thunderstorm watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings.
A warning means that severe weather is imminent or occurring.
Severe thunderstorms can and occasionally do produce tornadoes. A tornado watch means that tornadoes are possible. Continue with your daily routine, but be ready to take quick action should a tornado warning be issued.
A tornado warning means that tornadoes are imminent or occurring. Seek shelter immediately.