Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
fulgŭrālis, e, adj. [fulgur], of or relating to lightning: Etruscorum et haruspicini et fulgurales et rituales libri, treating of lightning as an omen, Cic. Div. 1, 33, 72; Amm. 23, 5, 13.