Endless floods and storms ahead: the rise in global temperatures is worsening the situation

Faced with a climate crisis characterized by a succession of unprecedented floods and storms, the whole world watches with concern as weather-related phenomena linked to rising temperatures worsen. These extreme weather events are no longer mere exceptions but are becoming the norm, sustainably impacting territories, infrastructures, and populations. Global warming plays a central role in this evolution, amplifying the frequency and intensity of water-related natural disasters, such as devastating floods and violent storms. Areas once little affected are discovering their vulnerability exposed to these new realities. The risk management system must urgently adapt to a situation where rising water levels and destabilization of ecosystems create an alarming context for the planet.

The direct consequences of rising temperatures on floods and storms

Global warming is a decisive factor in the intensification of extreme weather events. The increase in global temperatures, now about 1.55 °C higher than pre-industrial levels, fosters an atmosphere more laden with water vapor. This additional humidity creates an ideal ground for more intense and concentrated rains, thereby producing brutal and widespread floods. This trend was confirmed in 2024, the hottest year ever recorded according to the World Meteorological Organization (WMO), marked notably by significant floods in Europe and Asia.

For example, the storm episode Boris in September 2024 caused centennial floods in Central Europe, events that statistically should occur once every hundred years, but are now becoming more frequent. In the Czech Republic, several rivers exceeded their extreme alert levels, impacting thousands of people and causing significant damage. This phenomenon perfectly illustrates how the planet is entering a new climate era where hydrological hazards become unpredictable and more severe.

Mountainous regions such as the Himalayas are also experiencing early and unexpected deluges. The example of India, with some of the heaviest rains ever recorded in areas like Himachal Pradesh, shows how increased variability in the climate system disrupts even rainfall calendars, making risk prevention and management more difficult.

• Warmer atmosphere: More humidity and more intense rains
• Increased frequency: Floods and storms becoming more regular
• Diverse impacts: Urban and rural areas severely affected
• Systemic risk: Influence on infrastructure and safety of populations

Phenomenon	Location	Consequence	Estimated frequency before 2020	Observed frequency in 2024
Major floods	Czech Republic	Centennial floods	Once every 100 years	Widespread occurrence in Central and Eastern Europe
Early monsoons	Himalayas (India)	Unexpected intense rains	More stable seasonality	Early onset and heavy rains
Glacier loss	Polar and mountainous areas	Sea level rise, risks of coastal flooding	Moderate progressive loss	450 gigatons of ice lost in 2024

To deepen the understanding of the effects of climate change accelerating flooding in France, reliable resources are available, offering a comprehensive overview of these disruptions.

Sea level rise and implications for flood risk management

Among the direct consequences of global warming, massive glacial melting and ocean expansion exacerbate the rise in sea level. In 2024, this increase was measured at more than 1.2 millimeters additional, a figure that seems small but, when accumulated over several years, puts coastal populations under constant pressure. Several million people are exposed to the risks of coastal flooding and accelerated erosion, amplified by increasingly violent storms.

Vulnerable regions, whether insular, deltaic, or coastal, must now integrate notions of enhanced risk management, notably through suitable planning and more effective monitoring systems. In France, for example, areas like the Dune of Pilat perfectly illustrate this challenge. The resultant coastal erosion threatens not only natural habitats but also essential infrastructures.

• Melting glaciers: massive loss of ice contributing to rising water levels
• Thermal expansion: warming oceans causing their expansion
• Increased exposure: millions of people living in at-risk coastal areas
• Strengthening measures: adaptation of protections and evacuation plans

Coastal zone	Type of risk	Main consequences	Recommended measures
Dune of Pilat (France)	Coastal erosion	Loss of soil and ecological destabilization	Reinforcement of dikes and greening
Pacific Islands	Marine submersion	Mass displacements of populations	Relocation and elevation of constructions
Nile Delta	Aggravated periodic flooding	Salinization of agricultural soils	Improved drainage canals

For a cartographic follow-up of these phenomena, the site flood submersion map offers updated and precise visualizations.

Impacts and specific challenges of floods and storms on domestic and sanitary infrastructures

Beyond the visible damage to landscapes and cities, the worsening of floods and storms profoundly disrupts domestic networks, particularly sanitary installations and plumbing, areas where professional expertise is crucial to limit long-term consequences. Indeed, frequent water backflows, infiltrations, and damage to pipelines exacerbate issues of watertightness, corrosion, and contamination of drinking water systems.

Professionals in the sector, like Paul Leclerc and his colleagues, are witnessing an increase in emergency interventions related to water-related disasters. Older homes often must be renovated to adapt to these new climate constraints. This type of action includes the installation of backwater valves, the reinforcement of lift stations, or the installation of effective drainage systems around dwellings. These measures are also essential in the perspective of reducing costs related to disasters and increasing the longevity of housing.

• Hydraulic reinforcements: backwater valves and lift pumps
• Increased watertightness: joints, manholes, and adapted pipelines
• Resistant materials: use of components less sensitive to corrosion
• Preventive diagnosis: regular checks and systematic maintenance

Climate-related problem	Effect on sanitary installations	Recommended technical solution	Benefit for the user
Frequent flooding	Risk of water backflow into the house	Installation of backwater valves	Protection against damage from wastewater
Accelerated corrosion	Degradation of plumbing	Use of PVC pipes and composite materials	Extended lifespan of the network
Water infiltrations	Alteration of foundations and indoor humidity	Installation of reinforced watertightness and peripheral drainage	Reduction of mold risks and degradation

The affected residents can get information on the steps to follow through this expert firm, offering them a complete overview of managing home insurance in case of a climate disaster.

Adaptation and response of societies to the multiplication of climate-related natural disasters

The constant progression of the climate crisis compels governments, communities, and economic actors to rethink their strategies in response to natural disasters. This situation necessitates strengthening anticipation and response capacities tailored to extreme events like severe floods or violent storms. In Europe, for instance, the community response is evolving towards increased coordination in prevention and crisis management.

Citizens are encouraged to prepare and actively participate in protection efforts, while public policies seek to systematically incorporate climate change issues into their planning choices, notably through the development of sustainable and resilient infrastructures. These measures also contribute to raising awareness about rising waters and the associated risks. The European Union’s response to extreme events reflects this renewed commitment.

• Reinforcement of infrastructures: dikes, dams, and advanced alert systems
• International coordination: data exchanges and common strategies
• Education and awareness: public actions to inform populations
• Calls for individual action: domestic preparation and adaptation

Actors	Key actions	Expected impact
Governments and communities	Territorial planning integrating climate risk	Reduction of vulnerability, better protection
International organizations	Sharing of climate data and technical support	Quick and coordinated reaction in case of crisis
Citizens	Participation in prevention and preparation actions	Reduction of risks and local adaptation

Concrete examples of these dynamics can be seen on the ground in several French communities, facing climate urgency and challenges related to flooding like those in the center-east.

Global perspectives and differentiated impacts of the climate crisis on vulnerable areas

Beyond European examples, the climate crisis affects the world as a whole, with varying impacts depending on the regions. Africa, for instance, has experienced so-called “unprecedented” floods, exacerbated by climate change, affecting several million people in West and Central Africa. These phenomena severely disrupt agricultural activities, food security, and public health. Le Monde reports these dramatic situations, illustrating the increased vulnerability of socio-economic systems.

Moreover, the WMO report highlights that disruptions in certain regions, including the Amazon and northern America, are partly linked to weather phenomena like El Niño, which exacerbate climate extremes, causing both severe droughts and sudden floods.

These contrasts show that the rise in temperatures does not lead to a simple uniform effect, but a complex and unpredictable set of modifications to hydrological cycles, requiring a global effort to adapt water management and associated risks.

• Global climate disruptions: intensified droughts and floods
• Heavy socio-economic impacts: agriculture, housing, health
• Specific regional vulnerabilities: Africa, South America, South Asia
• Calls for international cooperation: increased exchanges and assistance

Region	Type of impact	Observed phenomena	Envisaged solutions
West and Central Africa	Massive flooding	Torrential rains, inundations	Reinforcement of infrastructures and humanitarian aid
Amazon	Severe drought	Significant rainfall deficit linked to El Niño	Sustainable forest management
North America	Variability in rainfall	Episodes of drought and below-normal rains	Agricultural adaptation and water management

To better understand the local dimension and global implications, several in-depth studies and articles are available for consultation, such as this current report on rising waters.