Campania is under a yellow weather alert from 9:00 p.m. on Thursday, September 17 until 12:00 p.m. on Friday, September 18, 2026. The alert was issued by the regional Civil Protection authority and covers the entire region, including Sannio and the Benevento area.
The warning concerns sudden showers and thunderstorms that could be locally intense. Forecast conditions remain unstable, with uncertainty about exactly where and when the strongest cells will develop.
Expected phenomena include downpours, hail, wind gusts, and lightning. According to the reports, these conditions could cause damage to roofs and exposed structures.
The associated hydrogeological risk includes flooding, rising water levels in rivers and streams, water running across road surfaces, and localized inundations. The Civil Protection notice also draws attention to landslides and falling rocks in vulnerable areas, with the reports noting that hydrogeological vulnerability has been aggravated by recent woodland fires.
The local reference for this report is Sannio and Benevento, but the alert itself applies to all of Campania. The sources acquired do not specify expected timing, probability, or intensity for any individual municipality in Sannio.
No municipal measures, such as closures, suspensions, or road restrictions in Sannio, are reported in the sources. The full text or identification number of the regional bulletin is also not provided.
The current alert period ends at midday on Friday, September 18.
