The rainfall on its own cannot cause a tornado. However, the same effect that causes relief rainfall and intensify already existing thunderstorms enough that they can produce tornadoes.
Relief rainfall affects the west mostly with rainfall. This is because of the North Atlantic drift , hot air rises from above the north Atlantic drift and because of the southwesterly prevailing wind...
Relief rain usually takes place around coastal areas where a fleet of hills runs along to the coast. When wet onshore wind from the sea meet a mountain, hill and barrier, it is forced to rise along...