Severity level mnemonics:

• Emergency / Alert / Critical / Error / Warning / Notice / Info / Debug
• (E)very (A)wesome (C)isco (E)ngineer (W)ill (N)eed (I)cecream (D)aily
• (E)mergencies (A)re (C)ritical (E)ven (W)hen (N)othing (I)s (D)angerous