NEW : `` These kinds of aftershocks are likely to occur for some time . '' The Kyodo cancels all tsunami advisories . JMA says no immediate abnormalities were reported at nearby nuclear plants . The earthquake struck March 10:57 a.m. . Tremors are felt as far away as Iwate .
NEW : The Kyodo cancels all tsunami advisories . JMA says no immediate abnormalities were reported at nearby nuclear plants . The earthquake struck March 10:57 a.m. . Tremors are felt as far away as Iwate .