As Australia’s “catastrophic” and deadly wildfire emergency continues, UN weather experts on Tuesday echoed Government warnings for people to remain vigilant in the face of the fast-moving threat and tinderbox conditions.
In Geneva, the World Meteorological Organization (WMO) noted that dozens of fires are raging in eastern New South Wales and southeast Queensland, amid reports that three people lost their lives in the fires at the weekend.
“Apart from the immediate physical threat…when, you know, authorities issue a message of catastrophic fire danger, the message there is basically, “Get out, get away,’” Clare Nullis, World Meteorological Organization (WMO) told journalists.
Citing Australia’s Bureau of Meteorology description of the situation as “evolving and dangerous”, Ms. Nullis said that conditions were likely to remain dry, with little to no rain forecast.
“The fires are due to a combination of factors including low soil moisture, heat and importantly, wind direction and wind speed,” she explained.
New South Wales has declared a state of emergency as parts of the state - including the Greater Sydney area and Queensland - face a "catastrophic" fire danger - the highest level of warning.
Although bush and grassfires are common in Australia, the emergency is linked to increasingly warm temperatures over the course of the last century.
“According to the Bureau of Meteorology of Australia, it’s been the second warmest January to October on record for Australia as a whole and these are records going back 110 years,” Ms. Nullis said, adding that the number of days falling into the category of “fire weather days” has increased.
“The most extreme 10 per cent of fire weather days - which is how, you know, they measure the fire index - has increased in recent decades across many regions of Australia, especially across Southern and Eastern Australia, there has been an associated increase in the length of the fire weather season and climate change including increasing temperatures is contributing to these changes.”
According to WMO, many at-risk communities face winds of 60 to 80 kilometres per hour (37 to 50 miles per hour) and temperatures in the mid to high 30s Celsius (around 95 Fahrenheit).
Although a cool weather front may ease fire dangers, “a combination of dry and gusty winds and a shift in wind direction will mean people in the impacted areas will need to remain vigilant,” Ms. Nullis insisted.
Between 1967 and 2013, major Australian bushfires resulted in over 8,000 injuries and 433 deaths, close to 50 per cent of all fatalities from major Australian natural disasters, excluding heatwaves, Australian Government figures show.
Over the same period, bushfires cost approximately $3.2 billion.
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Edited News , Press Conferences | WMO
New data showing that rivers were at their lowest level for decades last year provides further evidence that the climate crisis is real and countries must act immediately to protect themselves from the increasing threat to communities and livelihoods, the UN World Meteorological Organization (WMO) said on Thursday.
The key findings from WMO’s State of Global Water Resources 2025 report covering the hydrological cycle and extreme events in the five-year period to last year:
Highlighting the long-term decline in the Earth’s freshwater storage and glacier melt, WMO Secretary-General Celeste Saulo explained that the planet’s water reserves used to act as a planetary “savings account” that absorbed the occasional dry season, avoiding a water crisis. “One of the central stories of the 2025 report is what is happening to that savings account? And the simple answer is that we are depleting it,” she told journalists in Geneva.
Groundwater reserves are equally stretched and have been in decline since 2014, WMO’s report states, with nearly two-thirds of monitored wells worldwide showing levels lower than the historical norm and indicating a shift “further toward deficit…not recovery”.
“At the same time, we are seeing more water-related disasters,” Ms. Saulo said, while also stressing that the currently strengthening El Niño “will increase the risk of drought in some areas, and flooding in others”.
Glaciers disappearing
In 2025, for the fourth consecutive year, every major glaciated region on Earth lost ice mass, leading to short-term hazards including floods and long-term water insecurity, according to WMO.
Responding to a question about whether the changing global water cycle might have contributed to the deadly Nepal-China flooding disaster, Ms. Saulo explained that melting ice and rock was just one factor in the chain of events that ultimately sent a massive and deadly wall of water and debris downstream on 26 August, killing at least 1,367 people.
“You asked if it could happen again? Absolutely; the problem in this region is that there’s 63,700 glaciers at the last count,” she told a Press Conference in Geneva. “Even if you’re looking with remote sensing with satellites at these glaciers, you might see some faults, you might see some slight shifting, that does not mean necessarily catastrophic collapse. So, in order to plan for this, it’s very, very difficult. But the international community is looking very hard at ways in which we can bring people together to solve some of these monitoring issues.”
Data indicates that glaciers shrank between 2023 and 2025 with cumulative losses of 1,400 gigatonnes of water – or about one third of annual fresh water needs.
Every major glacier region on Earth lost ice for the fourth consecutive year.
“All 19 glacier regions around the globe lost ice; in Central Asia, Iceland, the Russian Arctic and western Canada and the United States, it was among the three worst years on record,” said Wayne Jenkinson, WMO’s Director of Hydrology and Cryosphere.
Some regions with smaller glaciers such as Central Europe, the Caucasus, the western Canada and the United States may already have reached “peak water”, Mr. Jenkinson warned.
“After this point, the glacier gives less meltwater each year simply because there is less ice left to melt. That matters for every community downstream that relies on water during hot, dry summers,” he explained.
Narelle van der Wel, WMO’s Head of Cryosphere Monitoring, Predictions and Services, stressed that while some further glacier loss is unavoidable, the eventual scale of the decline is not predetermined.
“Some glacier loss is inevitable, but total loss of glaciers is not yet inevitable,” she said, pointing to emissions reductions as central to limiting future losses.
Preparing for moving baselines
The report does not attribute every observed change to climate change alone. WMO says pressure on water resources and natural variability also contribute.
Mr. Jenkinson said governments need to prepare for “moving baselines” as historical patterns become less reliable.
“The situation 30 years ago is not where we are today,” he said. Countries, he added, need to prepare “for those changes that have really already arrived”.
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Edited News | OCHA , WHO
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Press Conferences , Edited News | WFP
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Edited News | UN WOMEN
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Edited News | OHCHR , UNOG
UN Human Rights Chief Volker Türk made the following remarks to the Enhanced Interactive Dialogue on the Independent Investigative Mechanism for Myanmar at the 63rd Human Rights Council.
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Edited News | OHCHR , UNOG
UN Human Rights Chief Volker Türk today delivered an update on the global human rights situation to the 63rdsession of the Human Rights Council in Geneva.
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Edited News | WHO
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Press Conferences , Edited News | WMO
Powerful El Niño heightens extreme-weather risks through 2027, as countries brace for impact - WMO
Fuelled by extraordinarily warm waters across the tropical Pacific Ocean, the El Niño climate pattern is expected to intensify in the coming months. Forecasters are almost certain that it will persist through February next year, with unusually warm conditions expected across the globe.
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Edited News | OCHA , IFRC , UN WOMEN , WHO
Nepal flood deaths near 1,000 as those spared struggle to survive – UN humanitarians
With the death toll in Nepal’s catastrophic flash floods inching towards 1,000, rescue workers are facing harsh conditions while survivors lack access to food, safe water and health care, humanitarians said on Tuesday.
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Edited News | OCHA , UNDRR , IFRC , WHO
Nepal: Flooding disaster “not over” as humanitarians work around the clock
While search and rescue efforts continued Friday following flash floods and mudslides in northern Nepal, UN humanitarians are taking stock of the devastation amid concerns over more flooding to come.
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Edited News | UNIFIL
Damaged roads, disrupted services and renewed military activity are putting civilians at risk in south Lebanon, UN Interim Force in Lebanon (UNIFIL) warns.
The UN peacekeeping mission is urging restraint and renewed political engagement to prevent further escalation.
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Edited News | ICRC , UNODA
Amid unconfirmed reports that fully autonomous and AI-guided drones are now being used on the battlefield, UN chief António Guterres and the President of the Red Cross on Tuesday renewed their urgent call for stricter controls, before it is too late.