Solar Tsunami:
(1) Sun’s magnetic field wraps around the sun in the east-west direction. Sunspots generated from sun’s magnetic field.
(2) These magnetic fields tend to slip towards the poles.
(3) Holding these fields in their place requires that there is extra mass plasma mass.
(4) A magnetic dam is formed which is storing a big mass of plasma.
(5) At the end of a solar cycle, this magnetic dam can break, releasing huge amounts of plasma cascading like a tsunami towards the poles.
(6) These are seen as the bright patches that signal the start of the next cycle of sunspots.