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Risk identification and assessment

A qualitative or quantitative approach to determine the nature and extent of disaster risk by analysing potential hazards and evaluating existing conditions of exposure and vulnerability that together could harm people, property, services, livelihoods and the environment on which they depend. Performing risk, hazard and vulnerability assessments is a key disaster risk management activity.

This theme covers aspects related to hazard/vulnerability/climate risk assessment, disaster risk modelling and analysis.

Through UNICEF’s open-access GeoSight platform, decision-makers can visualise risk, compare layers, and identify priority areas for action.

Latest Risk identification and assessment additions in the Knowledge Base

Smoke, fire and glowing embers in the forest
Update

Peat fires are a recurring challenge in Indonesia. Drought caused the archipelago's peat landscapes to become unrelenting infernos on several occasions in the past, with fires producing blankets of smoke for weeks and upending daily life for millions.

National Aeronautics and Space Administration (NASA)
Update

While an imminent catastrophe is not predicted in Jammu and Kashmir’s Chenab Valley, recent studies and government assessments suggest that Kishtwar district possesses many of the characteristics that make Himalayan regions vulnerable to such disasters.

The Chenab Times
Rapid soil moisture depletion during flash droughts accelerates wildfire spread in the United States thumbnail
Documents and publications

Study finds that rapid root-zone soil moisture depletion during flash droughts is more strongly linked to accelerated wildfire spread than conventional drought conditions across the United States.

Nature Communications (Nature)
Flooding submerges rural houses in Gandakha, Balochistan, Pakistan.
Update

A survey of 1,207 households across three severely affected districts (Buner, Shangla, and Swat) revealed that 85 percent of families received no warning before the flood waters arrived. For those that did, half had less than thirty minutes to act.

World Bank, the
Assessment of agricultural drought risk leveraging earth observation data and Google Earth Engine for Odisha thumbnail
Documents and publications

This study uses Earth Observation data and Google Earth Engine to assess agricultural drought risk across Odisha, India. Results identify western districts as highest risk and support targeted drought mitigation, planning and climate resilience actions.

Springer Nature
Transboundary threats from glacial lake outburst debris flows in the Himalayas: Identification and future projections thumbnail
Documents and publications

This paper identifies transboundary GLODF threats across the Himalayas and projects their future evolution under climate change, highlighting growing risks, hotspots along the China–Nepal border, and the need for stronger monitoring and early warning.

Integrated Research on Disaster Risk
Global rapid assessment of earthquake rupture and shaking thumbnail
Documents and publications

A globally scalable framework combines dense-array seismic observations, rupture imaging and shaking models to estimate earthquake impacts within minutes of origin time.

npj Natural Hazards (Nature)
Earthquake sign seismic richter scale
Research briefs

UC Riverside scientists have developed a way to identify where Earth’s biggest earthquakes are most likely to occur, offering a powerful new tool for improving disaster preparations in some of the most dangerous seismic regions.

University of California, Riverside
Update

Over the past half-century, annual hot-season temperatures in parts of the United States have warmed by as much as 4 or 5 degrees Fahrenheit, driving heat waves, droughts, and downpours.

Grist Magazine
Update

By analyzing the way that vibrations scatter light through the wires, scientists can detect volcanic eruptions, earthquakes, and even footsteps above. Last year, researchers laid a cable on the seafloor near a Greenland glacier.

Grist Magazine
Research briefs

Research shows that the Arctic is warming four times faster than the global average. The sea ice is melting, exposing more open ocean and throwing the ecosystem out of balance.

University of Washington
A coastal exposure index for Ireland: relative hazard exposure and the protective role of coastal habitats thumbnail
Documents and publications

A national Coastal Exposure Index maps relative climate hazard exposure around Ireland, highlighting exposure hotspots, coastal habitats’ protective role and populations and cultural heritage sites near highly exposed coastlines.

Springer Nature
Update

A new study suggests that El Ninos—the natural climatic chaos agent that pops up periodically and spikes global temperatures—are getting stronger because of human-caused climate change.

Phys.org
What can 150 years of census data tell us about population impacts from extreme weather in sparsely populated Northern Australia? thumbnail
Documents and publications

This paper analyses 150 years of census and hazard data to assess how extreme weather affected population trends in Northern Australia. It finds floods and cyclones can disrupt population growth highlighting need for resilience and adaptation planning.

Springer Nature
Challenges related to sea level rise and ways and approaches to address it thumbnail
UN resolutions and reports

A/81/74

The report assesses current context of sea level rise, key challenges and ongoing efforts by Member States and the UN system to address such challenges. The report builds on the Sep 2024 high-level plenary meeting to address sea level rise threats

United Nations General Assembly
When climate risks become evident: A natural experiment on risk perceptions in the housing market thumbnail
Documents and publications

Study uses the 2020 Gjerdrum landslide as a natural experiment to examine how climate risk salience affects housing markets. Exposed properties experienced temporary price declines of 1–1.5 per cent, while new residential development in risk zones fell.

Journal of Environmental Economics and Management
Research briefs

A study finds that weak sea-surface temperature gradients reduce ocean cooling beneath tropical cyclones, allowing storms to intensify. Researchers say incorporating these small-scale ocean features into forecasting models could improve cyclone warnings.

Phys.org
Research briefs

More and larger fires, including in areas of historically low fire activity, are likely but not a given.

Eos - AGU
Research briefs

A new, international scientific review warns that major gaps in knowledge along Antarctica’s coasts – where the ice sheet and the Southern Ocean interact – are now one of the biggest obstacles to reliably projecting future global sea level rise

Informatonsdienst Wissenschaft
El Niño/La Niña Update August 2026 thumbnail
Documents and publications

WMO update on the strengthening El Niño event and its implications for global temperature and rainfall patterns through early 2027.

World Meteorological Organization (WMO)
A stark landscape of cracked dry earth beneath a clear blue sky, depicting arid climate and drought.
Update

The latest seasonal forecasts from WMO Global Producing Centres indicate an exceptionally high likelihood (nearly 100% probability) that El Niño will persist through September–November 2026 and December 2026–February 2027.

World Meteorological Organization (WMO)
Research briefs

Erosion rates on parts of the Kaikōura Peninsula more than doubled after the 2016 earthquake, showing major quakes can “rapidly alter” the way coastlines evolve, an Otago researcher says.

University of Otago
Research briefs

In computer simulations of The Big One—a large magnitude earthquake that may occur along the San Andreas Fault in California.

California Institute of Technology
Update

Virtual simulations spotlight the role human behavior plays in earthquake safety. UC Berkeley researchers are studying what happens in those critical moments and how fear and risk perception influence people’s actions.

University of California, Berkeley
Research briefs

The new results suggest that, particularly for the UK and Ireland, storms with unusual origins may deserve a place in assessments of future wind and rainfall risk—even if they remain far less common than the storms Europe experiences every winter.

Phys.org
Heat early warning system in the Philippines: Current status and recommendations thumbnail
Documents and publications

This case study examines the current state of the Philippines’ heat early warning system, including how heat risk is understood and monitored, and how warnings are issued, communicated and acted upon across institutions.

Zurich Climate Resilience Alliance
Red Cross / Red Crescent Climate Centre
Heat early warning system in Jordan: Current status and recommendations thumbnail
Documents and publications

This case study examines the current state of Jordan’s heat early warning system, including how heat risk is understood and monitored, and how warnings are issued, communicated and acted upon across institutions.

Zurich Climate Resilience Alliance
Red Cross / Red Crescent Climate Centre
Heat early warning system in Mexico: Current status and recommendations thumbnail
Documents and publications

This case study examines the current state of Mexico’s heat early warning system, including how heat risk is understood and monitored, and how warnings are issued, communicated and acted upon across institutions.

Zurich Climate Resilience Alliance
Red Cross / Red Crescent Climate Centre
Update

This isn’t the first rock-ice avalanche in the Himalayas, but it is by far the most devastating. And, it is unlikely to be the last. Rising temperatures mean the permanently frozen slopes of mountains in the region may begin to melt and destabilise.

Conversation Media Group, the
Three smiling children in vibrant clothing enjoying a sunny day outdoors.
Update

A team found that for every standard deviation increase marine heat wave occurrences in a 24-month period child mortality increases by 5.4 percent. Malnutrition related child wasting and child stunting also increased by 6.5 and 8.8 percent respectively.

Grist Magazine
Financial flood risk exposure of Nikkei 225 Companies: An industry sector and regional facility-scale perspective thumbnail
Documents and publications

This study quantifies flood-related financial risk across Nikkei 225 companies and 18,000+ facilities. Using climate, hydrological and corporate data, it estimates annual losses exceeding US$8.2 billion by 2030 and identifies sectors with exposure.

International Journal of Disaster Risk Science
Update

The new mayor wants to invest in coastal resilience, but he will have to decide which areas of the city to protect. New York City has more than 500 miles of coastline, no two miles of the waterfront are quite the same and are vulnerable in different ways.

Grist Magazine
Research briefs

New research is dismantling the long-standing myth of the "pristine" Amazon. A reconstruction of 10,000 years of Amazonian pyrogeography shows that fire in the rainforest is almost exclusively a human-driven phenomenon, not a natural one.

EurekAlert
Is Europe under UNSEEN risk of cyclones of tropical origin? thumbnail
Documents and publications

This study uses UNSEEN simulations to assess the risk of tropical-origin cyclones affecting Europe. Results show the UK and Ireland face the greatest risk, and events similar to Hurricane Lili (1996) may occur every few decades.

AGU Advancing Earth and Space Science
Update

A glacier collapse near the China-Nepal border triggered a catastrophic mudslide in just seven minutes, exposing gaps in monitoring and early warning as climate change raises the risk of extreme Himalayan disasters.

ThinkChina
Risk assessment of debris flows along the China-Nepal transportation corridor thumbnail
Documents and publications

This study assesses debris-flow hazards and risks along the China-Nepal transportation corridor. It identifies high-risk road sections and hazard hotspots, providing evidence to support recovery, early warning systems and transboundary DRR.

Integrated Research on Disaster Risk
Update

Climate change is causing glaciers to retreat and become less stable, upping the odds of catastrophic collapses.

Grist Magazine
The 2025 Southeast Asian extreme rainfall: role of anthropogenic climate change thumbnail
Documents and publications

This study attributes 2025 extreme rainfall event in Southeast Asia to anthropogenic climate change. Modelling shows warming increased rainfall intensity and flood risk, with further increases projected, highlighting implications for adaptation planning.

Royal Meteorological Society
Illustration concept representing big data
Last updated 31 Aug 2026
Discover artificial intelligence and machine learning applications ranging from early warning systems to evacuation models, as well as other intriguing disaster risk reduction innovations.
Update

Scientists used seismic data, satellite imagery and drone surveys to rapidly identify a massive landslide as the cause of the deadly Nepal-Tibet flood. The event highlights cascading hazards, glacier instability and the need for stronger early warning.

Science
Update

Evidence from satellites and seismic data we have reviewed suggest that an enormous mass of bedrock and glacier ice broke off a slope north of Langtang Lirung and slammed into the valley about 4,000 feet (1,200 meters) below

Conversation Media Group, the
Drone surveying large industrial site enrichment plant with gps tracking markers at sunrise.
Tyler Smith
Drone mapping helps cities identify changing disaster risks by providing detailed data on buildings, terrain and infrastructure. Combined with GIS, hazard models and local knowledge, it supports better planning for floods, wildfires and urban resilience.
Powerful river rapids rush under a stone bridge in a dramatic canyon setting.
Update

Experts say the Nepal-Tibet flood was driven by a glacier collapse, monsoon-saturated conditions and high exposure in a vulnerable mountain corridor. The disaster highlights cascading risks, preparedness gaps and the need for cross-border warning systems.

Northeastern University
Update

XAIDA is designing and applying AI-based methodologies to reveal how climate change impacts extreme weather events and to foresee their occurrence in the future.

Community Research and Development Information Service
Update

A massive rescue and relief operation has been launched in the wake of devastating flash floods in Nepal, which were triggered by an avalanche of ice and rocks in the Tibet Autonomous Region of China near the border with Nepal.

World Meteorological Organization (WMO)
A mesmerizing satellite view showcasing Earth's clouds and ocean from space.
Update

This study, published in the journal Science, examined corals in Galapagos and found that the 1982-83 and 1997-98 El Niños – two of the strongest in recent memory – may be harbingers of more extreme events to come as the planet warms.

Conversation Media Group, the
Expansive view of icebergs and frozen waters in Yakutia, Siberia, under a clear winter sky.
Research briefs

First international global assessment of long-term active layer monitoring data at the George Washington University Department of Geography and Environment demonstrates clear global evidence that permafrost is thawing across much of the planet.

George Washington University
Meetings and conferences
Online
This webinar highlights Switzerland's approach, SDC's international experience, and UNDRR perspectives on learning from disasters to strengthen resilience and preparedness.
Update

The devastating floods that have swept through the Nepal–Tibet border region are first and foremost a human tragedy. Hundreds of people have died or remain missing.

Conversation Media Group, the
Update

The exact sequence of events that sent so much debris and water downstream is something we are still trying to unravel. There are a number of possibilities.

Conversation Media Group, the