Annecy sits near the Alps or the Rhone valley in east-central France, where mountainous terrain intensifies rainfall and can turn a heavy storm into a fast-rising mountain stream within a very short time.
Sitting beside its namesake alpine lake, the city’s mountainous surroundings can send heavy rain into local streams very quickly. The combination of steep terrain and intense convective storms makes this one of the more flash-flood-prone parts of France, and radar tracking of individual storm cells is especially useful here. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map