Berlin police deployed two water-cannon trucks to spray cooling mists on pedestrians during a severe heat wave on Saturday, June 22, 2024 [1], [2].
The deployment represents a rare tactical pivot for equipment typically used for crowd control, repurposing it to mitigate public health risks during extreme weather. As urban centers face rising temperatures, cities are increasingly forced to adapt existing infrastructure to prevent heat-related emergencies.
Authorities deployed the vehicles across various streets in Berlin, Germany [1], [3]. The operation aimed to provide immediate relief to residents and tourists as the city experienced a spike in temperature. According to forecasts, the maximum temperature reached up to 40°C [1].
Two water-cannon trucks were utilized for the effort [2]. Instead of the high-pressure streams used during protests, the trucks emitted a fine mist to lower the ambient temperature for those walking in the city center [1], [2]. This method allowed the police to cover large areas of pedestrian traffic quickly.
The use of such machinery for public cooling is an unconventional response to the heat. While the city has traditional cooling centers and parks, the mobile nature of the trucks allowed police to target the hottest corridors of the city during the peak of the Saturday heat wave [2], [3].
“Berlin police deployed two water-cannon trucks to spray cooling mists on pedestrians”
This incident highlights the growing necessity for 'adaptive urbanism' as European cities face more frequent and intense heat waves. By repurposing riot control equipment for public health, Berlin demonstrated a flexible, albeit improvised, response to extreme heat. It suggests that municipal agencies may need to integrate climate-emergency protocols into their standard operational capabilities to protect vulnerable populations in dense urban environments.



