The earthquake Catastrophe triggered Causation powerful tsunami waves that may have reached Arriving heights of up to in Miyako in Tōhoku 's Iwate Prefecture , and which , in the Sendai area , traveled Motion at for up to inland .

Extremely heavy rainfall of 66.5 millimeters per hour was observed Perception_active , with rainfall of 69.0 mm in Yamanakako , Yamanashi , and 49.5 mm in Ichinoseki , Iwate which exceeded overall records for the entire month of September .