Relaxation dynamics of a normal spot in a magnetic field below the critical
temperature is considered. Three different regimes of superconducting nucl
eation leading to the Abrikosov vortex state are predicted analytically and
observed numerically. In particular, a split of supervortex, regular growt
h of the Abrikosov lattice, and explosive creation of vortex-antivortex liq
uid are possible scenarios. [S0163-1829(99)07213-6].