Coasts of Middle-earth reshaped in the Downfall of Númenor (estimated date)
Event Type: Environment/Disease
Age: Akallabêth/Last Alliance
Date: May 9, 3319
An event in the Downfall of Númenor; see that entry for an overview:
But... a great chasm opened in the sea between Númenor and the Deathless Lands, and the waters flowed down into it....
For Ilúvatar cast back the Great Seas west of Middle-earth, and the Empty Lands east of it, and new lands and new seas were made....
And all the coasts and seaward regions of the western world suffered great change and ruin in that time; for the seas invaded the lands, and shores foundered, and ancient isles were drowned, and new isles were uplifted; and hills crumbled and rivers were turned into strange courses.
The Silmarillion, Akallabêth
[The shores of Middle-earth] were much changed in the tumult of the winds and seas that followed the Downfall; for in some places the sea rode in upon the land, and in others it piled up new coasts. Thus while Lindon suffered great loss, the Bay of Belfalas was much filled at the east and south, so that Pelargir which had been only a few miles from the sea was left far inland, and Anduin carved a new path by many mouths to the Bay. But the Isle of Tolfalas was almost destroyed, and was left at last like a barren and lonely mountain in the water not far from the issue of the River.
The Peoples of Middle-Earth, HoME Vol 12, Part 1, Ch 6, The Tale of Years of the Second Age
The year is canon, but the date is an estimate, set to follow the estimated date of the sailing of the Great Armament by thirty-nine days.
Elena Tiriel 6Dec05