u/itsmeyaboiskinneypyn

"It was the Night of Tears. Ysgramor sat staring out across the waters. He rode upon the last ship in his fleet, fleeing Tamriel for the shores of Atmora. From that vantage point, he watched as Saarthal—the first city—burned. A swollen sky poured rain upon the flames and upon the sea. And the greatest of us all wept bitter tears.

So great was the grief of the Harbinger that, instead of salty sorrow, Ysgramor wept tears of purest ebony. His eldest, Yngol, collected the tears in a stein and held his father in a warm embrace.

[...]

There, on the sea, Yngol set to work with his tools. He used lightning to heat the Night's Tears, the ocean's swell to cool them, and always his hammer-blows rang in concert with the rising wind.

When Ysgramor awoke the next morning, Yngol presented him with a mighty axe, hewn from the sorrow that had laid him low just the night before. And the Harbinger of us all embraced his son. He cried out in joy, sadness, and rage. And there on the deck of the last ship from Saarthal, Ysgramor named his axe Wuuthrad, which means "Storm's Tears" in the language of Atmora."

- Songs of the Return, Volume 5.