A natural disaster is "the negative impact following an actual occurrence of natural hazard in the event that it significantly harms a community". A natural disaster can cause loss of life or damage property, and typically leaves some economic damage in its wake. The severity of the damage depends on the affected population's resilience and on the infrastructure available. Examples of natural hazards include: avalanche, coastal flooding, cold wave, drought, earthquake, hail, heat wave, hurricane, ice storm, landslide, lightning, riverine flooding, strong wind, tornado, typhoon, tsunami, volcanic activity, wildfire, winter weather.
A disaster area is a region or a locale that has been heavily damaged by either natural, technological or social hazards. Disaster areas affect the population living in the community by dramatic increase in expense, loss of energy, food and services; and finally increase the risk of disease for citizens. An area that has been struck with a natural, technological or sociological hazard that opens the affected area for national or international aid.
Climate change in South Asia is having significant impacts already which are expected to intensify as global temperatures rise due to climate change. The South Asia region consists of the eight countries Afghanistan, Pakistan, India, Nepal, Bhutan, Bangladesh, the Maldives and Sri Lanka. In the 2017 edition of Germanwatch's Climate Risk Index, Bangladesh and Pakistan ranked sixth and seventh respectively as the countries most affected by climate change in the period from 1996 to 2015, while India ranked fourth among the list of countries most affected by climate change in 2015. South Asia is one of the most vulnerable regions globally to a number of direct and indirect effects of climate change, including sea level rise, cyclonic activity, and changes in ambient temperature and precipitation patterns. Ongoing sea level rise has already submerged several low-lying islands in the Sundarbans region, displacing thousands of people.
Severe weather is any dangerous meteorological phenomenon with the potential to cause damage, serious social disruption, or loss of human life. Types of severe weather phenomena vary, depending on the latitude, altitude, topography, and atmospheric conditions. High winds, hail, excessive precipitation, and wildfires are forms and effects of severe weather, as are thunderstorms, downbursts, tornadoes, waterspouts, tropical cyclones, and extratropical cyclones. Regional and seasonal severe weather phenomena include blizzards (snowstorms), ice storms, and duststorms. Extreme weather phenomena which cause extreme heat, cold, wetness or drought often will bring severe weather events. One of the principal effects of anthropogenic climate change is changes in severe and extreme weather patterns.
A natural hazard is a natural phenomenon that might have a negative effect on humans and other animals, or the environment. Natural hazard events can be classified into two broad categories: geophysical and biological.
Pakistan's climate is a continental type of climate, characterized by extreme variations in temperature, both seasonally and daily, because it is located on a great landmass north of the Tropic of Cancer.
A society with a high level of water security makes the most of water's benefits for humans and ecosystems, and limits the risk of destructive impacts associated with water. The risks include too much water (flood), too little water or poor quality (polluted) water. A more detailed definition of water security is: "the reliable availability of an acceptable quantity and quality of water for health, livelihoods and production, coupled with an acceptable level of water-related risks". Access to WASH services is one component of achieving water security. Some organizations use the term water security more narrowly for water supply aspects only.
A hazard is a potential source of harm. Substances, events, or circumstances can constitute hazards when their nature would allow them, even just theoretically, to cause damage to health, life, property, or any other interest of value. The probability of that harm being realized in a specific incident, combined with the magnitude of potential harm, make up its risk, a term often used synonymously in colloquial speech.
Climate change in Sri Lanka is an important issue, and its effects threaten to impact both human and natural systems in Sri Lanka. Roughly 50 percent of its 22 million citizens live in low-lying coastal areas in the west, south, and south-west of the island, and are at risk of future sea level rise. Climate change also threatens the island's biodiversity, including its marine ecosystem and coastal coral reef environments. Sea-level rise due to climate change has the potential to affect the overall abundance of endemic species. Sri Lanka's coastal regions, such as the Northern Province and the Northern Western Province, are considered major hotspots and extremely vulnerable to climate change. These maritime provinces are the most densely populated. In addition to being a threat to Sri Lanka's biodiversity, climate change may cause disastrous consequences on various levels in such areas. Such consequences include: Affecting agricultural productivity, causing natural disasters like floods and droughts, increasing the spread of infectious illnesses, and finally undermining the living standards.
There have been several seasons of drought in Afghanistan in recent decades. According to an analysis of climate and drought records Asia Development Bank, localized droughts have a periodicity of three to five years, and droughts covering large areas recur every 9-11 years. South and central areas are more affected from July through September.
The Somali Flash Floods are a group of flash floods that occur annually in the country of Somalia. The floods are a result of the Gu rains, which is the monsoon like rainfall that comes every March in the region. Every year, in the period shortly after the Gu rains from March to July, flash floods hit the lower Jubba and lower Shabelle regions of Somalia. These flash floods cause devastation and destruction, causing casualties and displacement. In recent years, the effects of the floods have increased compared to past floods. This is due to Somali population increase and continuing lack of preparation mechanisms, and they may be exemplified by meteorological reasons as well.
In 2016, deadly floods hit Ethiopia, leaving at least 200 people dead and over 200,000 people homeless as seasonal rains come early to the country. The majority of these deaths occurred in the city of Jijiga while elsewhere, heavy downpours of rain were reported with more floods expected in the next few days. The floods are reportedly at higher levels than other flood travesties than that of previous years.
Climate change in Afghanistan has led to a temperature increase of 1.8°C since 1950 in the country. This has caused far-reaching impacts on Afghanistan, culminating from overlapping interactions of natural disasters, conflict, agricultural dependency, and severe socio-economic hardship.
The 2018–2021 Southern Africa drought is an ongoing period of drought taking place in Southern Africa. The drought began in late October 2018, and is negatively affecting food security in the region. As of mid-August 2019, the drought is classified as a level 2 Red-Class event by the Global Disaster Alert and Coordination System. The alert level was reduced to the Orange-1.7 by 12 December 2019, as the new wet season had started. In September 2020, the drought was classified as a level 2 Red-Class event. The drought continued into early 2021. Beginning in October 2021, South Africa experienced above average rainfall and reservoirs refilled by early 2022.
The 1935 Yangtze flood struck China during a decade of flooding, famine and social turmoil. It is considered to be the fifth deadliest flood in recorded history, with a death toll of 145,000 and displacement of millions. As a result of the flood, millions of survivors were faced with hardship due to displacement, injury, loss of property as well as food shortages and famine.
A series of flash floods occurred in Afghanistan beginning in June 2020, with the largest and most impactful flood occurring on 26 August 2020. They were caused by torrential rain in Charikar, Parwan Province. The August floods killed at least 179 people and injured 212 others, and destroyed hundreds of houses. The Ministry of Disaster Management has also reported some casualties and destruction of infrastructure in the provinces of Kapisa, Maidan Wardak, Nangarhar, Panjshir, and Paktia.
Climate migration is a subset of climate-related mobility that refers to primarily voluntary movement driven by the impact of sudden or gradual climate-exacerbated disasters, such as “abnormally heavy rainfalls, prolonged droughts, desertification, environmental degradation, or sea-level rise and cyclones.” The majority of climate migrants move internally within their own countries, though a smaller number of climate-displaced people also move across national borders.
In 2016 Pakistan experienced higher rainfall than normal (10-20%), especially in the pre-monsoon season. Heavy monsoon rains are common in the region. This led to multiple periods of flooding, landslides, and damage particularly in Northern Pakistan. The Swat River overflowed and multiple landslides occurred around Pakistan including in Khyber Pakhtunkhwa, Gilgit-Baltistan, Azad Jammu, and Kashmir.
Climate change increasingly affected health problems in Ethiopia such as mortality and morbidity due to floods and heat waves, vector-borne diseases, water-borne diseases, meningitis, and air pollution-related respiratory disease. It continued throughout several stages and has been the main problem in agriculture and health. Currently, research is undeveloped regarding the climate issues and lacks coordinated follow-up, while there are few subsistence research studies detailing metrological condition. In addition, there is little awareness and few trained professionals to cope with health-related problems caused by climate change.
