According to Ultimate Magic and the PFSRD, wizards with the wood elemental school specialization can take Sirocco as a 4th level spell.
Herolab and Archives of Nethys don't recognise this however.
There doesn't seem to be any errata or FAQ on it I can find.
Has there been any kind of errata or comment on it I've missed?
Can my wood elementalist wizard use it in a 4th level slot?