Firestorm
Type	Charm
Hand Movement	Circular, overhead sweeping
Light	Fire-colour
Effect	Produces a ring of intense flames

[Source]

Firestorm is a spell that produces a ring of fire around the caster. The caster is able to control the movement and direction of the flames with enough precision to strike individual targets. The spell Partis Temporus can create a gap in the flames to allow safe passage through.

Known uses

In 1997, Albus Dumbledore and Harry Potter entered a seaside cave in an attempt to locate one of Lord Voldemort's Horcruxes. When the Inferi guarding the Horcrux attacked, Dumbledore conjured a firestorm to drive them back, saving Harry's life in the process.

Known Practitioners

• Albus Dumbledore

Behind the scenes

• In the soundtrack from the film version of Harry Potter and the Half-Blood Prince, the score for this scene was titled Inferi in the Firestorm.
• This spell may be a variant of Incendio or Fiendfyre.

Appearances

• Harry Potter and the Half-Blood Prince (First appearance)
• Harry Potter and the Half-Blood Prince (film)
• Harry Potter and the Half-Blood Prince (video game)
• Harry Potter and the Deathly Hallows: Part 1 (Appears in flashback(s))
• Harry Potter for Kinect