A big storm is a powerful and destructive weather event that can cause significant damage. The term 'big storm' can refer to several different types of storms, including a BLOW (4 letters), TEMPEST (7 letters), or TYPHOON (7 letters). A BLOW is a strong wind, usually accompanied by rain or snow. A TEMPEST is a violent storm with strong winds and heavy rain. A TYPHOON is a tropical cyclone that forms in the western Pacific Ocean.