Why is it so Hot Everywhere?

**thailazer** · 28-11-2024, 11:26 AM

The Pacific Northwest had a an offshore cyclone last week were the pressure dropped 66 mb in 20 hours to reach a low of 944 millibar. Brought a huge amount of rain to the west coast of the USA. These extreme events are getting quite common with global warming.

**S Landreth** · 28-11-2024, 12:03 PM

Everyone seems to be getting their share.

Studies of almost 750 events and trends reveal the impact of climate change change on extreme weather.

**S Landreth** · 01-12-2024, 04:53 PM

South-west France swelters in ‘staggering’ 26.9C November night heat

Towns in south-west France roasted in “completely extreme” heat in the early hours of Tuesday, with overnight temperatures hitting 26.9C (80.42F).

“It’s very exceptional temperatures – even for the summer, let alone late November,” said Matthieu Sorel, a climatologist at Météo France.

Climate scientists across the country described the night-time heat as “staggering” and “phenomenal” for reaching such highs so late in the year. Météo France could not confirm if it was the highest temperature recorded on a November night because its hourly data only stretched back to about 1990, said Sorel. “But still, it’s huge,” he added.

“From what we can remember, [we have] never seen such temperatures during the night for this time of year.”

In Europe, which has warmed about twice as fast as the global average, the shift has melted glaciers and dried out reservoirs. It has forced people to suffer through deadly heatwaves that reach catastrophic highs in the day and provide little respite at night.

“What we can see is [that] with climate change, we have way higher temperatures than before for the same meteorological events,” said Sorel.

**S Landreth** · 02-12-2024, 04:44 PM

A warning from a California marine heat wave

SAN FRANCISCO -- They call it "the Blob."

A decade ago, sea surface temperatures in the Pacific shot up to 11 degrees Fahrenheit hotter than normal. A high pressure system parked over the ocean, and winds that churn cold, nutrient-rich water from the depths to the surface died down. Stagnant, warm water spread across the Northeast Pacific, in a marine heat wave that lasted for three years.

Under the surface, the food web broke down and ecosystems convulsed, at first unseen to humans on shore. But soon, clues washed up.

Dead Cassin's auklets -- small, dark gray seabirds -- piled up on West Coast beaches. The auklets were followed by common murres, a slightly bigger black-and-white seabird. The carcasses were knee-deep in places, impossible to miss.

Researchers are still untangling the threads of what happened, and they caution against drawing universal conclusions from a single regional event. But the Blob fundamentally changed many scientists' understanding of what climate change could do to life in the ocean; 10 years later, the disaster is one of our richest sources of information on what happens to marine life as the temperature rises.

And it is more relevant than ever. Last year, multiple "super-marine heat waves" blanketed parts of the ocean. Averaged together, global sea surface temperatures broke records, often by wide margins, for months in 2023 and 2024. As the climate warms, scientists expect extreme marine heat waves to become more frequent.

The Blob "was a window into what we might see in the future," said Julia Parrish, a marine ecologist at the University of Washington who runs the Coastal Observation and Seabird Survey Team, a network of volunteers who survey beaches from Northern California to Alaska.

In a study published last year, Parrish and her colleagues estimate that the Blob eventually killed millions of seabirds, in waves of starvation.

More recently, researchers undertook a thorough post-mortem of the Blob in the Greater Farallones National Marine Sanctuary, off the California coast.

The sanctuary is one of 17 pockets of U.S. waters protected to varying degrees from development and industry. They are becoming test beds for ways people can try and help marine life -- and the human livelihoods that depend on the ocean -- adapt to climate change.

This summer, the National Oceanic and Atmospheric Administration published a "condition report" for the Greater Farallones, along with an accompanying climate vulnerability assessment that reveals just how shocking the Blob was for scientists.

A decade ago, marine heat waves were not a phenomenon sanctuary scientists were fully aware of, said Danielle Lipski, a NOAA ecologist who oversaw the condition report.

The foundation species that creates habitat for everything else in the Greater Farallones is bull kelp, a seaweed that grows from the seafloor to the surface in dense forests. Before the Blob, Lipski and her colleagues hadn't thought bull kelp would be particularly vulnerable to climate change.

By the time the Blob dissipated, more than 90% of Northern California's kelp forests were gone.

What a Marine Heat Wave Reveals About Our Warming Oceans - The New York Times

**S Landreth** · 03-12-2024, 07:42 AM

Australians warned of silent killer of heatwaves - ABC News

VIDEO (in link): Australians warned of silent killer of heatwaves

With more heat waves predicted as the effects of climate change intensify, authorities say people must stay vigilant against the dangers of extreme heat.

**S Landreth** · 05-12-2024, 08:01 AM

Severe Heatwave Alert: Gauteng and Four Provinces Brace for Scorching Temperatures

South Africa is in the grip of an intense heatwave, with scorching temperatures expected to affect Gauteng and several other provinces throughout the week. The South African Weather Service (SAWS) has issued a heatwave alert, warning residents to prepare for persistently high temperatures that could pose serious health and safety risks.

Provinces Affected by the Heatwave

The heatwave will primarily impact parts of Gauteng, North West, Free State, Limpopo, Mpumalanga, and the north-western regions of KwaZulu-Natal. According to SAWS, the central and southeastern areas of North West and the northern regions of the Free State will endure the heatwave until Wednesday, while Gauteng, Limpopo, Mpumalanga, and parts of KwaZulu-Natal will face extreme heat until at least Friday.

**S Landreth** · 07-12-2024, 10:49 AM

Heatwave alert: Joburg residents urged to stay cool as temperatures soar above 37°C

The City of Johannesburg Emergency Services has urged residents to stay hydrated and avoid direct sunlight as a heatwave brings temperatures exceeding 37°C this week.

The South African Weather Service has issued alerts for extreme heat across most parts of the country, with the highest temperatures expected in eastern regions.

Residents are advised to remain indoors, stay in cool areas, and drink plenty of water, especially during peak heat hours between 11 a.m. and 3 p.m.

“Residents are urged to stay hydrated, drink lots of water, stay in cooler places, avoid direct sunlight especially between 11am and 3pm in the afternoon as exposure to that extremely hot weather can lead to heat cramps, heat exhaustion and stroke,

Cape Town – The City of Johannesburg Emergency Services has urged residents to stay hydrated and avoid direct sunlight as a heatwave brings temperatures exceeding 37°C this week.

The South African Weather Service has issued alerts for extreme heat across most parts of the country, with the highest temperatures expected in eastern regions.

Residents are advised to remain indoors, stay in cool areas, and drink plenty of water, especially during peak heat hours between 11 a.m. and 3 p.m.

“Residents are urged to stay hydrated, drink lots of water, stay in cooler places, avoid direct sunlight especially between 11am and 3pm in the afternoon as exposure to that extremely hot weather can lead to heat cramps, heat exhaustion and stroke,” SABC quoted EMS’ Robert Mulaudzi as saying.

According to The Citizen, the country faces a persistent heatwave with temperatures expected to soar to 40°C or higher in some regions, lasting until mid-December.

**S Landreth** · 09-12-2024, 01:55 PM

Saturday's weather: Heatwave, extremely hot and uncomfortable conditions forecast across SA

It is going to be a hot day across the whole country.

Extremely high fire danger conditions are expected in parts of the Free State, North West, Northern Cape, Limpopo, and Mpumalanga, according to the South African Weather Service.

A heatwave with persistently high temperatures is also expected in parts of the North West, Free State and Northern Cape until early next week.

Extremely high fire danger conditions are expected over most parts of the Free State, North West, the eastern half of the Northern Cape, extreme south western parts of Limpopo as well as extreme eastern parts of Mpumalanga.

**S Landreth** · 10-12-2024, 10:16 AM

Western Australia hit by heatwave as possible cyclones threaten to impact coast this week

Western Australia is expected to be hit by multiple weather events this week, as severe heatwave conditions continue and a new cyclone threat looms.

Severe heatwave conditions continue to bake parts of the states, with the worst of the heat to begin making its way southwest towards the coast.

Maximum temperatures are expected to peak in the mid 30C to mid 40C, with overnight minimum temperatures in the mid to high 20s.

Perth will reach a high of 34C on Monday, with the temperature expected to peak on Wednesday with a high of 38C.

Residents in the state’s capital are warned the heat is not expected to ease until Saturday.

**S Landreth** · 14-12-2024, 11:55 AM

2024 is on track to be hottest year on record as warming temporarily hits 1.5degC

The year 2024 is on track to be the warmest year on record after an extended streak of exceptionally high monthly global mean temperatures, according to the World Meteorological Organization (WMO).

Key messages

Jan-Sept 2024 global average temperature 1.54 (±0.13) °C above pre-industrial level
Long-term warming measured over decades remains below 1.5°C
Past 10 years are warmest on record and ocean heat rises
Antarctic sea ice second lowest on record and glacier loss accelerates
Extreme weather and climate events lead to massive economic and human losses

The WMO State of the Climate 2024 Update once again issues a Red Alert at the sheer pace of climate change in a single generation, turbo-charged by ever-increasing greenhouse gas levels in the atmosphere. 2015-2024 will be the warmest ten years on record; the loss of ice from glaciers, sea-level rise and ocean heating are accelerating; and extreme weather is wreaking havoc on communities and economies across the world.

**S Landreth** · 15-12-2024, 01:56 PM

Severe heatwave bakes eastern Australia

Huge swathes of the country will continue to swelter as a severe heatwave is set to continue across much of Australia until the middle of next week.

The Bureau of Meteorology has current heatwave warnings issued for all states and territories on the Australian mainland.

Temperatures between 5Cto 12C above average are expected over the weekend through most of South Australia, Victoria, Tasmania and NSW, as well as parts of the southern Northern Territory and southern Queensland.

Senior meteorologist Miriam Bradbury said Monday would be the hottest day for Victoria, New South Wales and Tasmania, with temperatures up to 16C above average:

Adelaide is forecast to reach 40C on Sunday, and Melbourne is forecast to reach the high 30s or even 40C on Monday. Were this to occur, it will be the warmest day in Melbourne since January 2023 and the warmest December day since 2019.

Other parts of Victoria and NSW could be in the low to mid 40s. Inland NSW could even reach the high 40s on Monday. Along with the heat, windy conditions and a lack of rain are likely to lead to a spike in fire danger during Sunday and Monday for much of the east and south east.

Australia news | The Guardian

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