Overview
- A convective cell on 14 July produced very large hail and violent gusts that caused extreme, localized damage in the Unterallgäu within about ten to 15 minutes, destroying buildings, a small aircraft, trees and harvests.
- The Deutscher Wetterdienst issued fresh evening warnings on 5 August for Landkreis Unterallgäu and several Bavarian districts, with alerts forecasting short‑term rainfall rates of about 20–30 l/m² per hour, gusts around 80 km/h locally and up to 100 km/h in some areas, plus hail.
- DWD radar and Klimabüro München analysis found the 14 July cell had rapid vertical growth to roughly 10–12 km and very high echo intensities, which explain the exceptional hail potential and led the agency to classify the event as a rapidly intensifying severe thunderstorm rather than a confirmed tornado.
- Local station data recorded intense rainfall and hail during the July event, with a DWD operator in Kirchdorf measuring about 23 l/m² per hour and hail up to 1–1.5 cm in some places while reports from hardest‑hit villages described stones up to several centimeters across.
- Authorities and warning apps such as NINA are urging people to seek shelter, secure loose objects and avoid flooded or tree‑lined areas because repeated heat‑driven instability raises the risk of further short, violent storms that could hamper recovery and damage remaining crops.