00:00Before satellites, before radar, before supercomputers, how did anyone know a storm was
00:07coming? For thousands of years, weather forecasting was an art, not a science. First, they watched
00:14the sky. A red sky at night meant good weather was coming. A red sky in the morning meant
00:20trouble. Wispy, high clouds meant a change in 24 hours. Tall, dark tower clouds meant
00:28a thunderstorm was hours away. Second, they watched nature. When swallows flew low or
00:35crickets went quiet or seaweed smelled stronger, they knew low pressure and rain were close.
00:42Animals felt the change before humans did. Then came the first instruments. In 1643,
00:49the barometer was invented to measure air pressure. If pressure was falling fast, a storm was coming.
00:55Wind vanes and thermometers gave them numbers for the first time. Finally, in the 1800s,
01:02the telegraph let them share those numbers instantly. For the first time, they could draw
01:07a weather map and actually see a storm moving. They didn't have technology. They had observation.
