The Gulf Stream is a warm, swift western boundary current forming the North Atlantic Subtropical Gyre's western limb. Its path traces a massive clockwise loop:
The Gulf Stream transports ~1.3 petawatts of heat poleward—equivalent to millions of power plants. It warms Western Europe (London is 5°C warmer than Newfoundland at the same latitude), fuels nor'easters, and modulates hurricane intensity.
Its path meanders; eddies pinch off; strength varies seasonally and decadally. Climate change may weaken it (AMOC slowdown), with profound implications for regional climate and sea level.
Clockwise. Warm. Powerful. The Gulf Stream is the Atlantic's heartbeat.