Overview
- The Deutscher Wetterdienst issued orange and red warnings for heavy rain, hail and stormy gusts focused on southern Bavaria during the severe episode on September 16, with local totals of 20–35 l/m² in six hours and up to about 50 l/m² in staulagen.
- Storms on September 16 produced localized flash flooding, aquaplaning, fallen trees and hail reported in counties along the Alpine foothills, prompting advice to avoid underpasses and secure loose objects.
- Meteorologists say the environment favoured explosive thunderstorms and isolated rotating supercells, keeping a low but nonzero tornado risk that forecasters continue to monitor on radar.
- Northern and coastal Germany now face fresh to stormy southwest and west winds with strong gusts at sea that persist after the main convective peak, raising marine and local wind hazards this weekend.
- Short- to medium-term model runs show a drought signal for southwest Germany that could keep Rhine levels low through late September, which may force lower barge loads and lead to higher freight and fuel prices for consumers.