The National Weather Service has issued a tornado warning for Ascension, Assumption, and St. James parishes until 5 p.m.

Severe thunderstorms are moving through these areas supporting conditions for the forming of tornados, the NWS said through its advisory.

Authorities expect a tornado to form near Donaldsonville, and proceed near Convent, and Sorrento over the next half-hour.

All areas in Ascension, Assumption and St. James will also be affected, the NWS reported.