World Meteorological Organization

The WMO 2027 Calendar Photo Competition winners are here! 13 photographs from across the world, beautifully captured the theme – 𝐘𝐨𝐮𝐫 𝐖𝐞𝐚𝐭𝐡𝐞𝐫, 𝐘𝐨𝐮𝐫 𝐖𝐨𝐫𝐥𝐝. From dust storms sweeping across deserts in Kenya and the United States and above the clouds in Ecuador, Greece and Lithuania, to ancient baobab trees glowing at sunset in Madagascar, and the impacts of extreme heat and weather on lives and livelihoods in India, Myanmar, Norway and beyond – each photo tells a unique story of how weather, climate and water shape lives, landscapes and daily interactions. Winning photos will feature in the 2027 WMO Calendar and across WMO and United Nations channels. Congratulations to all the winning photographers! 👏 Thank you to everyone who participated and voted for your favourites. https://bit.ly/4jxUVyb

As Nepal continues to recover from the deadly floods of last month, the country is once again facing heavy and continuous rainfall, causing floods, landslides and avalanches. Associated with a low-pressure system over the Bay of Bengal, Nepal recorded more than 200 disaster incidents – including floods, landslides, avalanches, windstorms and thunderstorms – across various districts, according to its Disaster Risk Reduction and Management Authority. Widespread impacts include loss of life and damage to homes, livelihoods and property. Nepal's Meteorological Department reminds people to take precautions, as hazardous conditions can continue even after rain has stopped and skies have cleared. The impacts of extreme weather in Nepal is a tragic reminder of the importance of achieving #EarlyWarningsForAll. WMO is working with its Members and partners globally to ensure that emerging risks are detected earlier and translated into warnings that reach people and communities that need it the most.

Heavy rain, floods, droughts and heatwaves — extreme weather events are becoming more frequent. Authorities, cities and communities need to prepare. As Bangkok recovers from widespread flooding, it is also focusing on another weather extreme: heat. From 6-9 October 2026, the World Meteorological Organization and Global Heat Health Information Network, together with partners such as Asian Development Bank (ADB) ClimateWorks Foundation, The Rockefeller Foundation, World Health Organization, Wellcome Trust and Bangkok Climate Action Week, will gather leading experts, scientists, policymakers and investors at the #GlobalHeatForum to tackle the growing risks of extreme heat to health, livelihoods, environment, and economies. Solutions exist, but they need to reach more people, in more places, at far greater scale. Learn more and join us: https://lnkd.in/ewxkm26g

A great pleasure to launch today with Doreen Bogdan-Martin, International Telecommunication Union, a new publication that offers updated guidance on the use and protection of radio frequencies supporting critical meteorological systems. The radio-frequency spectrum is a finite natural resource. Meteorology relies on specific bands - determined not by choice, but by the physical properties of the atmosphere itself: they enable observations that no other frequencies can provide. We call on governments, regulators, and meteorologists to safeguard access to radio frequency spectrum essential for weather forecasts, early warnings, climate monitoring and water management. Statement: https://bit.ly/4hPrEOe   Press release: https://bit.ly/3VT0hdA   Report: https://bit.ly/4hqj5rP  

Did you know that the Antarctic ozone hole in 2025 was one of the smallest in decades? 🌎 The latest WMO Ozone and UV Bulletin shows that last year’s ozone hole ranked as the 4th–5th smallest since severe ozone depletion patterns were first observed in 1992. That’s good news for the ozone layer that protects life on Earth from the sun’s dangerous ultraviolet (UV) radiation. While it continues to recover, changes in the UV exposure remain an important concern. In the recent decades, high UV exposure has become more frequent. In some parts of Europe, it has increased by as much as 20% since the mid-1990s. Ground-based measurements show that reduced cloud cover and longer sunshine hours are the main drivers of this increase. Higher UV exposure means a greater risk of skin cancer and other related diseases. “In light of this trend, targeted and effective UV protection measures are of paramount importance,” says the bulletin. The WMO Global Atmosphere Watch network provides the essential ground-based ozone observations required to help monitor the ozone layer and understand long-term changes, supporting efforts to protect people and the planet. 🔗 Read the full issue to learn more: https://lnkd.in/eeqm-7eF

🌊 WMO welcomes the new UN Declaration on Sea Level Rise The United Nations General Assembly has adopted the Declaration on Sea Level Rise, calling for stronger international cooperation and urgent, coordinated action. The declaration recognizes the essential role of UN specialized agencies, including WMO, and highlights the importance of action based on the best available science and knowledge. Sea-level rise is one of the key climate indicators monitored by the WMO community and sea levels are rising faster. At the end of 2025, the global mean sea level was around 11cm higher than it was more than three decades ago, according to WMO’s latest #StateofClimate report. Rising sea levels put coastal communities at greater risk. Even a few millimetres of sea-level rise can increase the risks of coastal flooding, threatening infrastructure, livelihoods, food and water security, and cultural heritage. Understanding these changes and their local impacts depends on sustained observations. Yet significant gaps remain, particularly across the oceans, Small Island Developing States and other vulnerable coastal regions. WMO stands ready to work with countries and partners to strengthen observations, early warning systems and access to climate information and services, providing #EarlyWarnings4All and helping communities anticipate risks, prepare and make informed decisions. 🔗 Learn more about the declaration: https://bit.ly/3Vgv7wy

2025 was the fourth consecutive year with widespread glacier loss across all regions. The WMO Global #StateofWater report shows that between 2023-2025, glaciers lost mass every single year – 1400 Gigatonnes of water in total. That is nearly enough to fill around 560 million Olympic-sized swimming pools, or equal to about one-third of the freshwater used annually. What does this graph tell us? Each bar shows the global glacier mass change for one hydrological year, from 1976 onwards. 🔵 Blue means glaciers gained ice, and 🔴 red means they lost it. In 2025, continued glacier loss caused short-term hazards like floods and long-term risks like water insecurity. 🔗 Explore more findings on global water trends: https://lnkd.in/ejWvqB9B

The World Meteorological Organization welcomes the United Nations General Assembly’s Declaration on Sea Level Rise and its call for stronger international cooperation and urgent, coordinated action. The declaration recognizes the essential role of UN specialized agencies, including WMO, and the importance of action based on the best available science and knowledge. Sea levels are rising faster — from 2.65 mm per year in 1993–2011 to 4.75 mm per year in 2012–2025, according to our latest #StateOfClimate report. In 2025, global mean sea level remained near the record high observed in 2024. Even a few millimetres of sea-level rise can increase the risks of flooding, erosion and saltwater intrusion, threatening coastal communities, infrastructure, livelihoods, food and water security, and cultural heritage. Understanding these changes and their local impacts depends on sustained observations. Yet significant gaps remain, particularly across the oceans, Small Island Developing States and other vulnerable coastal regions. WMO stands ready to work with countries and partners to strengthen observations, early warning systems and access to climate information and services — helping communities prepare and make informed decisions. Sea levels will continue to rise for centuries. What we strengthen today will help us manage the risks of tomorrow. https://lnkd.in/e8BGrasB