I’ve seen some assertions that it’s unprecedented to have hurricane impacts as far inland as those of
#helene.
Case study- The massive losses in the great Vermont flood of November 1927
@NWS background:
weather.gov/nerfc/hf_novembe…
A late season hurricane moved up the Atlantic coast in early November 1927 and proceeded to move up through the Connecticut River valley. The storm dumped generally 3-4 inches of rain through much of southern New England. However, as the system reached the higher altitudes in Vermont, the tropical system stalled due to the presence of two cold, high pressures areas just to the east and west. The result was widespread areas of 6 inches or more of rainfall during the period of November 2-5, with reports received of up to 15 inches of rainfall. In addition, October had been a very wet month, with rainfall generally about 150% of normal for the month.