According to this volunteer organization, they have received a Yellow-Level Alert from the Centro de Coordinación de Emergencias warning of probable storms and torrential downpours from ten this morning until midnight.
In fact, municipal police and volunteers from this organization will be at the entrance to the river, warning that there this is a possibility of a flash flood coming down. Should the alert level pass to Rojo, then they will physically stop excursionists instead of merely advising them.
The local weather forecast offered by the state meteorological agency forecasts around 25 litres per square metre per hour.
(News: Nerja, Axarquia, Costa del Sol, Malaga, Andalucia)