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The Development of High- & Low-Pressure Systems

Online 8.2: Jetstreaks, flow curvature, and low-pressure systems

Sea Level Pressure
- The sea level pressure animation shows the location and track of a surface cyclone. The cyclone developed and strengthened as a result of divergence in the upper atmosphere, as can be seen in the animations of the upper air maps linked on the previous page.

Department of Atmospheric Sciences Severe and Hazardous Weather at Department of Atmospheric Sciences University of Illinois