Weather Tidbits: Seasonal Jet Streams
Today’s Weather Tidbits focuses on jet streams and their seasonal variations. A jet stream is a narrow band of strong winds in the upper levels of the atmosphere, that are boundaries of warm and cold air. The 2 common jet streams the United States follows are the polar jet that is located between 50°-60° N and the subtropical jet which is located at 30° N. The polar jet stream is weakest and slowest in the summer compared to being at its fastest and most active during the winter. The subtropical jet tends to create for heat waves in the summer and its trajectory in the winter is usually associated with El Niño.