Overview

• Météo‑France placed Côtes‑d’Armor under orange alert for rain and flooding, with 20–50 mm expected and isolated 60–90 mm by Monday morning.
• A nearly stationary upper‑level cold low is sustaining a cool, unstable pattern through midweek, with only a possible late‑week improvement and low confidence on timing.
• Temperatures have plunged by around 10–15°C locally since Sunday, with drops of about 20°C compared with the prior week’s late warmth.
• First flakes of the season are forecast in the Alps and Pyrenees above roughly 1,800–2,000 meters, with mistral and tramontane gusts near the Mediterranean up to 80 km/h.
• Heavy showers have already brought 20–40 mm in parts of southwest Aquitaine, exceeding 60 mm on the Landes coast, as further rain targets the Grand Est and other northeastern areas.