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[News] Los Angeles Fires









alanfp

Active member
Feb 23, 2024
154
Some trees have evolved to be fire resistant, coupled with the high winds the fire was moved on by the winds before it had a chance to catch.

Oak, walnut, mahogany are hardwoods so are fire resistant. Poplar, maple, aspen, alder and cherry are also fire resistant. Coniferous or evergreen trees with cones and needles are highly flammable.
I don't know that there's any evidence that they have EVOLVED to be fire-resistant, but they are by nature ~50% water while they are alive. OTOH the timber used for buildings is relatively dry and therefore flammable. Maybe some thought should be given to construction materials, but that'll cost more to build.

Everyone who has lost anything has my sympathy.
 












Super Steve Earle

Well-known member
Feb 23, 2009
9,016
North of Brighton
Fire is apparently now 21,000 acres. To put that into perspective, that's the same size as Brighton.
Luckily The Duchess of Sussex was on hand to call a photoshoot to use her knowlege of a Brighton sized area, to encourage everybody else to help.
 






alanfp

Active member
Feb 23, 2024
154
Climate Change suspect detained



Fires starting in January with daytime temps of around 15 deg are obviously not caused by global warming.

Please note that I am not saying GW isn't a thing and I'm def not saying that we shouldn't be trying to stop it or mitigate its effects. But those blaming these fires on GW are scoring an own-goal and playing into the hands of the CC deniers.
 


Papa Lazarou

Living in a De Zerbi wonderland
Jul 7, 2003
19,425
Worthing
Fires starting in January with daytime temps of around 15 deg are obviously not caused by global warming.

Please note that I am not saying GW isn't a thing and I'm def not saying that we shouldn't be trying to stop it or mitigate its effects. But those blaming these fires on GW are scoring an own-goal and playing into the hands of the CC deniers.
I'm not sure that is correct. The fact that it's dry enough for these winter fires IS probably down to long term changes in rainfall as a result of man made climate change.
 




Official Old Man

Uckfield Seagull
Aug 27, 2011
9,287
Brighton
Fires starting in January with daytime temps of around 15 deg are obviously not caused by global warming.

Please note that I am not saying GW isn't a thing and I'm def not saying that we shouldn't be trying to stop it or mitigate its effects. But those blaming these fires on GW are scoring an own-goal and playing into the hands of the CC deniers.
Global warming may not have started the fires, but certainly had a lot to do with the tinder dry brushlands
 




seagullwedgee

Well-known member
Aug 9, 2005
3,103
I lived near LA in Thousand Oaks 79/80 (last year of high school) and in Malibu 80/81 (first year of Uni). There were very rarely any bush fires, even in the heat of summer. Let alone in what has historically been both the coldest and wettest time of year. That is 45 years, and a wholesale transformation in climactic conditions. Parts of my uni have burned to the ground. There are 12 lane highways all over the place, and very little public transport.
 




dwayne

Well-known member
Jul 5, 2003
16,443
London
I'm not sure that is correct. The fact that it's dry enough for these winter fires IS probably down to long term changes in rainfall as a result of man made climate change.
Don't think so. Last Feb was the highest rainfall in history in LA !!
 


Springal

Well-known member
Feb 12, 2005
25,012
GOSBTS
Don't think so. Last Feb was the highest rainfall in history in LA !!
But also they’ve not had any meaningful rain since last April apparently
 


dwayne

Well-known member
Jul 5, 2003
16,443
London
But also they’ve not had any meaningful rain since last April apparently
Maybe but it looks like only Dec / Jan were historically significantly different to normal (last year completely the other way) so not really a global warming thing
 


Zeberdi

“Vorsprung durch Technik”
NSC Patron
Oct 20, 2022
7,690
I'm not sure that is correct. The fact that it's dry enough for these winter fires IS probably down to long term changes in rainfall as a result of man made climate change.

Global warming may not have started the fires, but certainly had a lot to do with the tinder dry brushlands

Don't think so. Last Feb was the highest rainfall in history in LA !!

But also they’ve not had any meaningful rain since last April apparently
All the above.

However, it is the very dry and extreme WIND event that has turned seasonal fires into an equivalent of a hurricane and these extreme climatic conditions are unusual. Strong winds this time of year in California are normal as the Santa Ana blows off the desert and descends into California over the Sierra mountains - but the speed and strength of the wind currently fuelling these fires is “unprecedented”.

Other factors that have contributed include:
  • An increase in non-native ‘garden’/cultivated vegetation (which is less resilient to fire) as residential developments have spread in to previously undeveloped desert areas
  • Long term impact of more extreme weather through several years.


‘In 2021 and 2022, the Los Angeles area was pounded by heavy rainfall, which put vegetative growth on hillsides, canyons and woodland areas on steroids. Drought conditions that returned in 2023 and 2024 turned those areas into dried-out tinderboxes just waiting to ignite.”

Combine that with the extreme and unprecedented Santa Ana winds of January 2025 and you have the climatically linked disaster unfolding now in Los Angeles.

 
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dwayne

Well-known member
Jul 5, 2003
16,443
London
All the above.

However, it is the very dry and extreme WIND event that has turned seasonal fires into an equivalent of a hurricane and these extreme climatic conditions are unusual. Strong winds this time of year in California are normal as the Santa Ana blows off the desert and descends into California over the Sierra mountains - but the speed and strength of the wind currently fuelling these fires is “unprecedented”.

Other factors that have contributed include:
  • An increase in non-native ‘garden’/cultivated vegetation (which is less resilient to fire) as residential developments have spread in to previously undeveloped desert areas
  • Long term impact of more extreme weather through several years.


‘In 2021 and 2022, the Los Angeles area was pounded by heavy rainfall, which put vegetative growth on hillsides, canyons and woodland areas on steroids. Drought conditions that returned in 2023 and 2024 turned those areas into dried-out tinderboxes just waiting to ignite.”

Combine that with the extreme and unprecedented Santa Fe winds of January 2025 and you have the climatically linked disaster unfolding now in Los Angeles.

Season (July 1-June 30) Total Inches of Rainfall Inches Above/Below (+/-)
Overall Season Average*
2024-2025 See month-by-month numbers as season unfolds.
2023-2024 25.19 +10.37
2022-2023 28.40 +13.58

 


alanfp

Active member
Feb 23, 2024
154
I posted mostly in reaction to the idiot arsonist that appears to be the 'trigger'. I was probably looking at things too simplistically and I wasn't addressing the causes of the 'spread'.

Some good information in the responses, thank you, which I don't dispute - especially from those who have actually spent time living in the area.
 


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