The Peak Of Mount Anrovil In The Weathermother

In Poul Anderson's The Earth Book Of Stormgate, Hloch's introductions draw substance from the stories introduced. Thus, the volume begins:

"To those who read, good flight.

"It is Hloch of the Stormgate Choth who writes, on the peak of Mount Anrovil in the Weathermother."

-Poul Anderson, The Earth Book Of Stormgate (New York, 1979), p. 1.

Eventually, in the twelfth and last collected story, we read:

"The loftiest heights on the planet Avalon belong to the Andromeda Range. But that is a name bestowed by humans.Not for nothing do the Ythrians who have joined them in their colonizing venture call that region the Weathermother. Almost exactly two days - twenty-two hours - after he had spied the stranger, a hurricane caught Jack Birnam. Born and raised here, he was used to sudden tempests. The rapidly spinning globe was always breeding them. Yet the violence of this one astonished him."

-Poul Anderson, "Rescue on Avalon" IN The Earth Book Of Stormgate, pp. 422-433 AT p. 423.

Also relevant here is some information imparted in The People Of The Wind:

"Avalon rotates in 11 hours, 22 minutes, 12 seconds..."

-Poul Anderson, The People Of The Wind IN Anderson, Rise Of The Terran Empire (Riverdale, NY, 2011), pp. 437-662 AT II, p. 452.

And, in "The Problem of Pain":

"The days were too short for work, the nights too short for sleep." (p. 43)

Short days and high mountains are perhaps the father and mother of violent weather.