Then local national weather service offices monitor and issue warnings.
A severe thunderstorm warning is issued if a severe thunderstorm is imminent or radar is indicating a storm producing hail 1" or larger, damaging wind gusts 58 mph or greater, or perhaps even a tornado with little warning.
A tornado warning is issued if a tornado or funnel cloud is spotted or if radar strongly indicates one.
These types of warnings are issued for 30 to 60 minutes for a county or parts of a county. that is the time to act to stay safe! Get to know beforehand what you should do in different circumstances.In general, most injuries occur form flying of falling debris. the key is to get under or away from this debris. The safest place to be when severe weather strikes is an interior room on the lowest floor away from windows. Take cover under something sturdy and cover yourself with blankets.