Weather Channel's website states" A tornado warning is issued when a tornado (or sometimes a funnel cloud) has been spotted or is denoted by radar." A tornado watch is a general area in which severe weather may occur within 48-24 hours.
Honestly, how many tornado warnings have you seen or heard on the tv or radio? Dozens if not hundreds, right? And how many tornadoes have you seen? That is because meteorologists do not know as much about tornadoes as is needed to accurately predict when and where a funnel cloud will touch down. Discover Magazine uncovered that the National Oceanic and Atmospheric Administration (NOAA) funded $7 million to a project to increase the accuracy of predicting tornadoes from 1:10 to 1:3 over two years during the active May-July tornado season.
Savannah is under a tornado watch until 8pm EST. The best way to protect yourself is to be aware of changing weather conditions and have a plan of action should severe weather be announced for your area.