1944 Atlantic hurricane season
The 1944 Atlantic hurricane season featured the first instance of upper-tropospheric observations from radiosonde – a telemetry device used to record weather data in the atmosphere – being incorporated into tropical cyclone track forecasting for a fully developed hurricane. The season officially began on June 15, 1944, and ended on November 15, 1944.
Source: Wikipedia — 1944 Atlantic hurricane season (CC BY-SA 4.0)