[Fyron]

Its in Data\StellarAbilityTypes.txt. From stock:

Name := Normal Asteroids
Number of Poss Abilities := 0

Name := Normal Storm
Number of Poss Abilities := 4
Ability 1 Chance := 250
Ability 1 Type := Sector - Damage
Ability 1 Descr := Turbulence causes damage to space vehicles.
Ability 1 Val 1 := 200
Ability 1 Val 2 := 1

Name := Unstable Warp Point
Number of Poss Abilities := 1
Ability 1 Chance := 1000
Ability 1 Type := Warp Point - Turbulence
Ability 1 Descr := Strong gravitic fields causes damage to ships.
Ability 1 Val 1 := 200
Ability 1 Val 2 := 0