# Heavy rain in Northern Islands

> Live situation record from CLSTR: https://clstr.news/situations/heavy-rain-in-northern-islands
> Updated: 2026-09-11T11:02:12.000Z. Sources: 5. Developments: 2.

Météo France maintained a yellow alert for heavy rain and thunderstorms in the Northern Islands due to an unstable atmosphere caused by tropical wave n°42. Significant rainfall was recorded in Saint-Martin, where Marigot saw 44 mm of rain within six hours. The weather system was expected to bring moderate to heavy rainfall to Saint-Barthélemy and additional accumulation to Saint-Martin before transitioning to drier, misty conditions.

## Timeline

### 2026-09-11: Met Éireann issues yellow rain warnings for several Irish counties

Met Éireann has issued Status Yellow rain warnings for several Irish counties, forecasting heavy rain, thunderstorms, and potential localised flooding through Saturday.

2 sources. https://clstr.news/cluster/met-ireann-issues-yellow-rain-warnings-for-several-irish-counties

### 2026-09-10: Northern Islands remain under yellow alert for heavy rain

A yellow alert for heavy rain and thunderstorms remains in effect for the Northern Islands, following significant rainfall in Saint-Martin caused by a tropical wave.

3 sources. https://clstr.news/cluster/northern-islands-remain-under-yellow-alert-for-heavy-rain

---
Cite as: Heavy rain in Northern Islands. CLSTR, https://clstr.news/situations/heavy-rain-in-northern-islands