Hurricane hex - Diana G. Gallagher

Despite the fact that it's hurricane season, the three sisters decide to visit a college friend of Paige's who lives near Orlando. They arrive just as a hurricane in South Florida changes course and starts heading towards them. Meanwhile, the three sisters find that something strange is going on in their hostess's home: it seems that Paige's friend has taken up practicing folk magic. Aware that large storms can affect magic, the Charmed Ones must convince Paige's friend to stop casting spells before they find themselves trapped in the eye of a real mess.