Heavy-rain hazard: Glarus Süd-Sernftal (level 2/5)
This report has not appeared in the source feed since 11.10.2026 06:25 CEST and is considered ended.
Summary
Heavy-rain hazard: Glarus Süd-Sernftal (severity 2/5).
What hazard threatens
Heavy or persistent rain can trigger flash floods, overwhelmed drainage, landslides and rapidly rising water levels.
Local weather conditions
Measuring station Elm, 958 m a.s.l. — reference station for the reported area
14.1 °C
42.0 mm
48 mm
14 km/h
Day of warning and following days
- Thu 08.10. 14° 8° measured
- Fri 09.10. 8° 4°
- Sat 10.10. 10° 2°
As of: Values as at the time of the warning; they are not updated afterwards.
Source: MeteoSwiss
Forecast: MET Norway, licence CC BY 4.0
Context & protective measures
Background: heavy rain falls in large amounts in a short time and overwhelms soils and drainage. Unlike a flood that has already occurred, this is a warning: flash floods, flooded underpasses and slope failures can develop within minutes, even far from rivers.
Recommendation
Likelihood low, impact low. Prepare using the linked guide.
Protective steps: avoid underpasses, streams and low-lying roads; do not cross flooded paths. Secure outdoor items, keep drains clear and raise valuables in cellars. Follow the water-level and severe-weather bulletins of the authorities.
What to do now
Risk matrix
Affected area
The warning applies to an area reported by the authority, not to a single location.