Signs of a Tornado

1. Watch for strong, persistent rotation in the clouds.
2. Whirling dust or debris on the ground under a cloud base. Sometimes tornadoes do not have a funnel.
3. Hail or heavy rain followed by either dead calm or a fast, intense wind shift. Many tornadoes are wrapped in heavy rain and cannot be seen.
4. Day or night a loud continuous roar or rumble that doesn't fade in a few seconds like thunder.
5 At night you can see small, bright, blue-green to white flashes at ground level near a thunderstorm means's that power lines are being snapped by very strong wind, could indicate a tornado.