0:54
Firestorm is the most powerful spell you can learn in Skyrim, and it causes a massive explosion. Although this is gameplay (and thus the actual lore version could be far more impressive), as an ingame spell, it has a range of 100 feet (or 30.48m).
https://en.uesp.net/wiki/Skyrim:Fire_Storm...
1:06
Fireballs explode to do some considerable damage. I'll have to look up to see if there are any examples of how big fireballs can be in the lore, but gameplay-wise, they can reach 15 feet (or 4.57200m) in radius.
https://en.uesp.net/wiki/Skyrim:Fireball
Put this through Nuke Map and mess...
0:39
Several huge fireballs explode, seemingly from Alduin (though perhaps also mages going by the dialogue).
0:11
The average height of a Norwegian man is 179.9cm, or 1.799m (closest equivalent to a Nord I could find).
184 pixels = 1.799m
1 pixel = 1.799m/184 = 0.00977717391m...