  With the high sensitivity and wide-field coverage of the Square Kilometre
Array (SKA), large samples of explosive transients are expected to be
discovered. Radio wavelengths, especially in commensal survey mode, are
particularly well suited for uncovering the complex transient phenomena. This
is because observations at radio wavelengths may suffer less obscuration than
in other bands (e.g. optical/IR or X-rays) due to dust absorption. At the same
time, multiwaveband information often provides critical source classification
rapidly than possible with only radio band data. Therefore, multiwaveband
observational efforts with wide fields of view will be the key to progress of
transients astronomy from the middle 2020s offering unprecedented deep images
and high spatial and spectral resolutions. Radio observations of gamma ray
bursts (GRBs) with SKA will uncover not only much fainter bursts and verifying
claims of sensitivity limited population versus intrinsically dim GRBs, they
will also unravel the enigmatic population of orphan afterglows. The supernova
rate problem caused by dust extinction in optical bands is expected to be
lifted in the SKA era. In addition, the debate of single degenerate scenario
versus double degenerate scenario will be put to rest for the progenitors of
thermonuclear supernovae, since highly sensitive measurements will lead to very
accurate mass loss estimation in these supernovae. One also expects to detect
gravitationally lensed supernovae in far away Universe in the SKA bands. Radio
counterparts of the gravitational waves are likely to become a reality once SKA
comes online. In addition, SKA is likely to discover various new kinds of
transients.
