Sudden Impacts of Disasters

01. Physical Impacts of Disasters

Disasters have physical effects like loss of life, injury, disability and other health problems, and impacts psychologically as well. Disasters inflict severe physical impacts, causing catastrophic structural damage to homes, critical infrastructure like roads and power grids, and essential facilities such as hospitals. They devastate agricultural lands and water supplies, frequently leading to severe injuries or fatalities, and leave behind lasting environmental degradation and widespread homelessness. 

2025 has been an extremely horrific year, as it has kicked off dozens of catastrophic hazards worldwide. In January 2025, the Palisades and Eaton Fires broke out, which were a highly destructive wildfire that began in the Santa Monica Mountains of Los Angeles County. This fire spread over 90 sq.km, and caused over 31 deaths, and billions of $US economic loss.

Hurricane Mallisa with wind speeds of 295 km/h (185 mph), this was the most destructive Atlantic storm of the year. It heavily impacted the Caribbean, particularly devastating areas in Jamaica and Haiti. In november, and december, the powerful, deadly tropical cyclone “Senyar”  (storm system) formed over Asia and caused thousands of fatalities across Indonesia, Thailand, and Myanmar. 

Typhoon Kalmaegi, known in the Philippines as Typhoon Tino, was a strong, deadly, and devastating tropical cyclone that affected portions of the central Philippines, particularly in Cebu, causing freshwater flooding due to record-breaking rains. It later struck Central Vietnam as one of the strongest typhoons on record in the area during early November 2025. The deadliest typhoon to strike the Visayas since Typhoon Rai in 2021, Kalmaegi is the twenty-fifth named storm and eleventh typhoon of the 2025 Pacific typhoon season.

Before 2025, heavy rainfall, floods, and landslides affected countries worldwide, especially South Asian countries likes Pakistan, India, Bangladesh, and Nepal. In 2025, the Ravi River of Pakistan overflowed and caused horrific flooding in the metropolitan city of Lahore, Punjab. The flood displaced thousands of people and affected many housing societies beside the river.

Apart from the lethalities, disasters create ripple effects on health that can extend into the months, years, and even decades after fires are put out, flood water recedes, and winds and storms die down. While these effects are hard to precisely measure, their potency is undeniable. Official data, for instance, indicate that hurricanes and other tropical cyclones cause an average of 24 deaths per storm. That number is too high – every death is a tragedy – but it pales in comparison to the 7,000 – 11,000 deaths that studies estimate actually come from storms’ longer-term consequences. With extreme weather events becoming ever-more common, there is a national and moral imperative to rethink not just who responds to disasters, but for how long and to what end. This issue brief presents an overview of the ways in which disasters affect public health and well-being in the long term, as well as suggestions for disaster governance reform viewed through a public health lens.

02. Economic Loss

Disaster results in huge economic loss due to the destruction of property, disruption of human settlements and damage to the infrastructure, etc. Disasters, whether they are climate-driven or geophysical, trigger massive economic losses by destroying physical assets, disrupting critical supply chains, and crippling local industries. These sudden shocks severely burden national budgets and often push vulnerable populations into long-term poverty, highlighting the urgent need for resilient infrastructure and proactive risk management. 

03. Environmental Impacts

Disasters severely damage the natural environment by destroying habitats, contaminating water supplies, and accelerating soil erosion. Events like floods, wildfires, and earthquakes trigger cascading ecological crises, releasing toxic pollutants, producing hazardous debris, and leaving ecosystems vulnerable to long-term degradation. Some fundamental environmental impacts of the disasters are;