Center jump

From Glossary of Meteorology

center jump

The formation of a second pressure center within a well-developed pressure system, nearly always a low.

The original low pressure center usually diminishes in magnitude as the new center deepens. The center of the cyclone appears to jump from the first to the second point of low pressure and can occur at a point farther along the original path of the low or may form along a new path displaced from the original low.