Extreme Temperature Diary- Saturday October 5th, 2025/Main Topic: Building Inundation Due to Climate Change – Guy On Climate
Dear Diary. Unfortunately, a half meter of sea level rise is already inevitable no matter whether or not the world quits using fossil cold turkey today. Since carbon continues to rise in the atmosphere, we will probably see much more inundation than just a half meter during the rest of the 21st century. I look at the skyline of Miami with tears knowing that this city will go the way of Atlantis shortly after 2050, this centuries’ half mark.
Millions of buildings worldwide are built close to the current shoreline. As a species that evolved from the sea, we are enchantingly drawn back to oceans. The seas also have been used for millennia as avenues to transport people and goods.
It’s no wonder that the majority of our big cities are built around ports. Now all coastal cities are about to be flooded with sea water, first any built right at the seashore and then farther inland depending upon how much more fossil fuels are burned for transportation and power generation.
Here are more details from phys.org:
Climate deniers & predatory delayers claim ‘t’s too costly to stop using fossil fuels,’ and corporate media has failed to inform the public that it’s going to be exponentially more costly to move coastal cities, infrastructure and military installations further inland as sea levels inexorably rise — Desi Doyen/Green News Report (@greennewsreport.bsky.social) 2025-10-04T16:15:21.497Z
Millions of buildings at risk from sea level rise, analysis finds
October 3, 2025
The GIST
Millions of buildings at risk from sea level rise, analysis findsby Claire Loewen, McGill University
edited by Gaby Clark, reviewed by Robert Egan
 Exposure to building inundation as a function of LSR. Credit: npj Urban Sustainability (2025). DOI: 10.1038/s42949-025-00259-z
Sea level rise could put more than 100 million buildings across the Global South at risk of regular flooding if fossil fuel emissions are not curbed quickly, according to a new McGill-led study published in npj Urban Sustainability.
The research provides the first large-scale, building-by-building assessment of the impact of long-term sea level rise on coastal infrastructure in Africa, Southeast Asia and Central and South America. The team used detailed satellite maps and elevation data to estimate how many buildings would be inundated at various levels of sea level rise over multi-century timescales.
“Sea level rise is a slow, but unstoppable consequence of warming that is already impacting coastal populations and will continue for centuries,” said Prof. Natalya Gomez, co-author of the study and Canada Research Chair in Ice Sheet–Sea Level Interactions at McGill University. “People often talk about sea level rising by tens of centimeters, or maybe a meter, but in fact it could continue to rise for many meters if we don’t quickly stop burning fossil fuels.”
Millions of buildings at risk, even in best-case scenarioThe study considered scenarios of between 0.5 and 20 meters of sea level rise. It found that with a rise of just 0.5 meters, a level projected to occur even under ambitious emissions cuts, approximately three million buildings could be inundated. Under scenarios with five meters or more of rise, as could be expected within a few hundred years if emissions don’t end soon, exposure increases sharply, with over 100 million buildings at risk.
Many of these buildings are in densely populated, low-lying areas, meaning that entire neighborhoods and critical infrastructure, including ports, refineries and cultural heritage sites, would be affected.
“We were surprised at the large number of buildings at risk from relatively modest long-term sea level rise,” said Prof. Jeff Cardile, co-author and professor at McGill University. “Some coastal countries are much more exposed than others, due to details of the coastal topography and locations of buildings.”
Critical insights for urban planners, policymakers, communitiesThe researchers argue that these findings offer critical insights for urban planners, policymakers and communities working to prepare for inevitable sea level rise.
“Every one of us will be affected by climate change and sea level rise, whether we live by the ocean or not,” said Eric Galbraith, another professor involved in the study at McGill. “We all rely on goods, foods and fuels that pass through ports and coastal infrastructure exposed to sea level rise. Disruption of this essential infrastructure could play havoc with our globally interconnected economy and food system.”
The study’s interactive map, publicly available via Google Earth Engine, allows decision-makers to visualize which regions face the greatest exposure. This data can inform climate adaptation strategies such as building protective infrastructure, adjusting land use planning or, in some cases, managed retreat.
“There is no escaping at least a moderate amount of sea level rise,” said Maya Willard-Stepan, lead author who conducted the study as part of an undergraduate research project . “The sooner coastal communities can start planning for it, the better chance they have of continuing to flourish.”
More information: M. Willard-Stepan et al, Assessing the exposure of buildings to long-term sea level rise across the Global South, npj Urban Sustainability (2025). DOI: 10.1038/s42949-025-00259-z
Provided by McGill University
Explore further
Researchers call for new standards for building in coastal flood zones
Here are more “ETs” recorded from around the planet the last couple of days, their consequences, and some extreme temperature outlooks, as well as any extreme precipitation reports:
In just 5 days,October 2025 has broken more heat records than any FULL MONTH in history except September 2025 (but it will surpass it soon).
We are seeing something beyond any imagination, with records destroyed in all Continents with extreme margins.
And that's nothing to what's coming. — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-05T09:58:18.646Z
Big contrasts in EUROPE
Exceptional cold in Italy and Balkans
Record summer heat West and East:
TURKEY >37C Minimums up to 26C
SPAIN 36.6 Coin (near Malaga)
Further South Minimum 28.9 St Louis SENEGAL : October :Record again!
Next 2 days full summer in Spain & Portugal! — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-05T16:39:34.774Z
WILD EUROPE: SUMMER IN WEST AND EAST MEDITERRANEAN, WINTER IN THE MIDDLE
36.7c Coin, SPAIN, 37C in TURKEY with,widespread tropical nights.
43C+ every day in North Africa.
And snow at record low levels for early October between the two.
Tomorrow Spain might see historic heat! — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-04T18:32:12.248Z
CHINA BRUTAL HEAT WAVE Another 38C day
Today, 41 stations across China broke October records (20 Tmax & 21 Tmin), with Qianshan, Jiangxi, recording the highest temperature in China at 38.2C.
Record also in Fuzhou.
The heat wave is expected to pea tomorrow with highs potentially approaching 40C! — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-05T13:33:05.242Z
HISTORIC HEAT IN THE KOREAS
More Records of October highest minimums smashed
SOUTH KOREA
20.4 Geochang
19.7 Sangju
NORTH KOREA
18.8 Anju
Max temperatures still >30C in both North and South Korea.
Full summer conditions will extend to next week.
That's after a record hot summer — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-05T11:55:45.909Z
EXTRAORDINARY HEAT IN JAPAN
Another day >34C with dozens of records smashed (see list below).
The heat is just going to be MUCH worse next days with hundreds of records expected.
Summer will go on in the southern half of Japan for many weeks to come.
AC 24/7 all October. — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-05T10:42:04.446Z
EXTRAORDINARY HIST0RIC HEAT IN JAPAN
Minimum 28.9 Ishigaki
HOTTEST OCTOBER NIGHT IN JAPAN HISTORY
broken again !
Insane Min 28.5 Ibaruma,27.9 Hateruma,24.9 Kaminaka,
23.2 Matsuura,19.3 Yagishiri,14.1 Nishiokoppe — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-05T09:00:53.054Z
MALDIVES "ETERNAL" RECORD HEAT
Maldives has been with relentless record heat for years breaking records continuosly
Today Min 28.5 Male
MALDIVES HOTTEST OCTOBER NIGHT IN HISTORY
Record hot nights are falling from Japan to Caucasus in every country (even >32C in Oman!). — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-05T15:13:15.431Z
Post 1/many
Insane Minimum 21.5C/71F Fort Frances
🇨🇦CANADA OCTOBER HOTTEST NIGHT EVER
Records of High minimums pulverized with ridicolous margins between Manitoba and Ontario,
MUCH ABOVE JULY AVERAGES
also min 20.5 Red Lake,20.3 Royal Island,19.9 Sprague,18.2 Kenora etc. — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-04T21:46:16.375Z
Today's MINIMUMS 🇺🇸are ridicoulous,unbelievable
MINNESOTA
73 Waskish
72 Minneapolis
72 Windom,Red Wing
71 Canby,Marshall
70 International Falls
S DAKOTA
72 Vermillion
71 Sisseton
70 Millbank,Britton
N DAKOTA
70 Gwinner
68 Fargo
IOWA
70 Le Mars
WISCONSIN
69 New Richmond
etc — Extreme Temperatures Around the World (@extremetemps.bsky.social) 2025-10-04T22:16:58.158Z
🔥 Climate change and wildfire disasters
A global study (1980–2023) found that deadly and costly wildfires have surged since 2015, driven by extreme climate conditions near populated areas.
🔗 doi.org/10.1126/scie...
#SciComm #Climate #Wildfires 🧪 — Prof Sam Illingworth (@samillingworth.com) 2025-10-04T06:56:34.578Z
Wildfires are getting deadlier and costing more. Experts warn they’re becoming unstoppable #Climate — Climate Tracker (@climate.skyfleet.blue) 2025-10-02T18:26:23.476Z
The best guess of climate experts at this Overshoot Conference is that - in an optimistic scenario - we return to 1.5C (where we are now) in 7 generations time.
That's about the same distance from now as the start of the Industrial Revolution. — Hannah Daly (@hannahdaly.ie) 2025-10-02T12:31:01.321Z
It may not yet be too late to save a large part of modern civilisation. But in another few years it probably will be. "Died of a delusion" seems a fitting epitaph for our civilisation’s tombstone. #auspol #climate — Pearls and Irritations (@johnmenadue.com) 2025-10-01T10:33:48.567Z
This week’s Senate hearings could not be more timely. Climate misinformation is spreading wildly, aided by public relations firms, even as climate change worsens and the risks mount. The question now is, how will policy makers respond? #auspol #misinformation #climate — Pearls and Irritations (@johnmenadue.com) 2025-10-02T23:01:19.115669+00:00
The kids who sued America over climate change aren’t done yet #Climate — Climate Tracker (@climate.skyfleet.blue) 2025-10-03T08:46:08.180Z
Yet another reminder that the fight for #climate action is also the fight against fascism and genocide.
www.theguardian.com/world/2025/o... — John Gibbons 🇵🇸 🇺🇦 🇪🇺 (@thinkorswim.bsky.social) 2025-10-04T19:02:18.935Z
Check out this new open access book - #Feminist #Climate #Policy in #Industrialized States - with policymaker interviews, chapters on degrowth, construction, photovoce and participatory methods + much more. Three cheers for the editors :) www.taylorfrancis.com/books/oa-edi... — Julie MacArthur 🍁 (@jlmacarthur.bsky.social) 2025-10-03T23:10:26.497Z
New 12 min episode with high quality content about rapid hurricane intensification and its potential causes (AMOC strength, sulphur emissions, climate change).
@leonsimons.bsky.social @umsonst.bsky.social @weatherprof.bsky.social @bmcnoldy.bsky.social @rahmstorf.bsky.social
Full YouTube episode: — Climate News (@climatenews.bsky.social) 2025-10-03T16:52:25.104Z
There’s lots of “rumors” of future tropical storms. It’s probably a bit confusing.
So let’s try to cut through all the tropical “noise” out there.
There are two main things we are watching for the next two weeks…
1/ — Jeff Berardelli (@weatherprof.bsky.social) 2025-10-03T20:52:46.112Z
Trump officials cut nearly $8bn in clean energy projects in Democratic states #Climate — Climate Tracker (@climate.skyfleet.blue) 2025-10-04T10:36:25.511Z
We don’t need #gas or #nuclear to power data centres, says Octopus Energy boss CEO Britain’s biggest energy supplier.
"We hear: ‘Demand for energy for data centres can only be met by gas and maybe new nuclear.’ Forgive me: this is horseshit, right?”
#climate #AI
www.thetimes.com/uk/environme... — Dr Paul Dorfman (@drpauldorfman.bsky.social) 2025-10-03T08:49:00.624Z
These 4 countries are almost entirely powered by #renewableenergy:
1. Iceland 🇮🇸
2. Paraguay 🇵🇾
3. Norway 🇳🇴
4. Costa Rica 🇨🇷
We have the solutions. #ActOnClimate
#ClimateEmergency #climate #tech #renewables #renewableenergy — Mike Hudema (@mikehudema.bsky.social) 2025-10-04T18:07:03.537Z
Over 30,000 oil and gas industry jobs have been lost in the last decade, while corporations earn billions more in profit.
It is unfortunate that Albertan's have been suckered.
BTW: Carbon capture is BS.
#abpoli #bcpoli #cdnpoli #canada #green #energy #climate
shorturl.at/Pf1h5 — Kai, a very old GenX 🇨🇦 (@kaicable.bsky.social) 2025-10-05T09:39:32.227Z
Our Lancet viewpoint, 'Bioethics for the Planet', seems ever more timely. Caring for humans and all life forms demands we care also for the planet. Viewable with registration
www.thelancet.com/journals/lan...
#climate #planetaryhealth #globalhealth #STS #ethics — Warwick Anderson (@wombatscholar.bsky.social) 2025-10-02T02:48:27.906Z
It’s been clear since day one that climate denial and vaccine denial are part of the same toxic stew of ideologically-motivated opinions; but I am genuinely confused by number three on this list.
Is the “alien scam” claiming that they do exist? Or that they don’t? 🤔 — Katharine Hayhoe (@katharinehayhoe.com) 2025-10-05T03:51:18.591Z
The New South Wales government has unveiled plans for the Great Koala National Park, a 475,000-hectare reserve that combines existing protected areas with 176,000 hectares of state forest to safeguard an estimated 12,000 koalas and dozens of other threatened species. — Mongabay (@mongabay.com) 2025-10-05T18:18:00.785Z
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