Southeastern New Hampshire and Maine experienced an earthquake in 1925 . Dishes and goods were jostled from shelves in Ossipee , Tuftonboro , and Effingham Falls . In 1929 the Grand Banks of Newfoundland ( to the east ) experienced a magnitude 7.2 earthquake and New Hampshire felt minor effects . In 1935 , a 6.25 earthquake centered in Timiskaming , Ontario , away , was felt in an area of over , and some places in New Hampshire experienced Mercalli Intensities as high as V ( '' Moderate '' ) . Ossipee Lake was the site of two moderate earthquakes in December 1940 . The quakes were felt in all six New England states , as well as parts of New Jersey and Pennsylvania . In the epicentral area , a large number of aftershocks happened . One observer counted over 120 aftershocks through January 31 , 1941
6.25 earthquake
1935 Timiskaming earthquake
Geology of New Hampshire