READER'S ROCK LIFESTYLE MAGAZINE VOL 2 ISSUE 4 NOVEMBER 2014 VOL 2 ISSUE 3 OCTOBER 2014 | 页面 64

Better than a siren: How new technology is keeping people safe from tornadoes (BPT) - A peculiar corkscrew sensation goes up one's spine when a tornado siren goes off in the dead of night. It means a tornado is on the ground. You know it's coming. You can hear it and you can feel it. You just can't see it and don't know where it is until it might be right on top of you, literally. Tornado season has arrived for many areas of the United States, and unfortunately, hundreds if not thousands of Americans will experience that sensation this spring and summer. For many, those sirens in the middle of the night might be the only warning they receive.