Though this Crater is further west, and 56 miles wide by 64 miles long. We can hand-wavy the length and just focus on the fifty six miles as ‘diameter’. The Asteroid to achieve this is a meteorite of iron 17,000 feet in diameter.
THE TRANSIENT CRATER
Initial impact vaporises a colossal volume some 32.9 miles in diameter and 11.6 miles deep.
A truly destructive quake of 9.4 is unleashed. Stone Structures are destroyed out to one hundred miles and damaged out to a thousand miles. It would most certainly subside the subterranean realms of the Shadow Elves and the Lower Broken Lands and break the Pillar of Kaygar destroying Upper and Lower Dengar.
Generating a 49.4 mile radius fireball. Thermal Radiation generated by this event expands outward igniting Trees, clothing, grass, inflicting third degree burns to most of the body of every living thing out beyond five hundred and sixty five miles dropping off to full body second degree burns out to five hundred and ninety five miles where it drops off to full body first degree burns. At this level of thermal radiation Lake Amsorak which falls into the one hundred to two hundred miles range will flash boil or even convert fully to steam.
At seven hundred miles the fireball is below the horizon. But the damage is done as it pretty much kills every living thing in the Known World east to the Thyatian Empire and probably as far west as the borders of the Masters realm in the Savage Coast.
At the Crater Rim ejecta is over two thousand five hundred feet in diameter. At one hundred miles it is down to over fifty feet in diameter and can be considered boulder strewn out to three hundred miles where three feet diameter boulders are dropping from the sky. Large rocks out to six hundred miles and gravel beyond eight hundred miles.
THE WIND BLAST
At the Crater Rim the Pressure wave is travelling outward at 11,500 mph. Catastrophic winds out beyond two hundred miles destroying all structures and just stone towers and wooden structures at four hundred miles as the wind drops below 423 mph. Destructive winds knock down 90% of trees out to nine hundred miles pretty much demolishing every wooden structure in the Northern Reaches, Emirates of Ylaruam, Thyatian Empire, Minrothad Guilds and remnant Ierendi isles where the number drops to 30% of trees knocked down. Wind gusts drop to 116 mph out at a thousand miles from the centre.
THE FINAL CRATER
The final Crater is fifty six miles wide and 0.71 miles (3,748 feet) deep even though the melting went over eleven and a half miles deep.
This Asteroid pretty much takes out Glantri, Sind, Wendar, Ethengar, Broken Lands, Darokin, Five Shires, Alfhiem, Atruagin Clans and most of the Ierendi Isles and Rockhome leaving other nations beyond damaged by cyclonic winds.