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All that is true; fires that large can generate their own wind, greatly increasing their temperature like when blacksmiths use a bellows, however the video didn't really show any melted metal that I could see.
originally posted by: Bhadhidar
A house fire is not, as has been noted, the same as as house caught in a wildfire.
The temperature extremes can be orders of magnitude greater in a wildfire where forest and woody brush are whipped to higher temperatures by stiff, dry, constant winds;
As was/is the case with these fires.
Check the wind conditions at the start and through the height of these fires. Look up the “El Diablo” winds that blow through the region.
And if you still think that a “mere” wildfire could never be hot enough to melt metal and glass, consider this;
Blacksmiths have used wood-fired (charcoal) forged to soften, and melt metals for hundreds of years. The key to a really hot wood fire is the amount of air available to fuel combustion. Blacksmiths use a bellows.
A wild or forest fire will be stoked by the wind. In fact, a wild or forest fire, if large or hot enough, will generate its own wind as the fire literally sucks the air from the surrounding areas into itself to feed.
I agree, it looked like she was drawing conclusions from the pictures that the pictures didn't support. Melted metal? Where, I didn't see melted metal, and even if it happened as pointed out earlier blacksmiths melt metal using wind. In addition to generating its own wind, the comments to the youtube video page say there were 45mph winds blowing. I would say that's even more wind than the blacksmith's bellows!
originally posted by: Devino
What should be left after a fire? Stoves, refrigerators, water heaters, toilets (if they haven't exploded), aluminum gutters (if the fire didn't get hot enough to burn them) and all the metal fasteners/brackets and of course the concrete foundations.
Areal views don't show much but from the ground I see what looks like all of that stuff left behind. The narrator claims, almost hysterically, that nothing is left yet I see all kinds of stuff.
I don't see any evidence of melted metal either. What I do see is what appears to be forced air furnaces, water heaters and other barely recognizable appliances. Once I identified some of these shapes in one burnt out house I can see similar shapes in all of the houses as seen from the areal images.
it looked like she was drawing conclusions from the pictures that the pictures didn't support. Melted metal? Where, I didn't see melted metal, and even if it happened as pointed out earlier blacksmiths melt metal using wind.
Temperatures soared in the San Francisco Bay Area in early September, hitting 106 degrees Fahrenheit in San Francisco, a new record,
and 108 in San Rafael, north of the city. I
t was the warmest summer in more than 100 years of record keeping, said Daniel Swain, a climate scientist with UCLA: “It beat the previous record by a pretty wide margin.”
Those high temperatures dried out vegetation throughout the area, he said.
While fires are a part of life in California, this one became more destructive because it had so much dry brush and grassland — fed by last winter's rains — to burn.
Powerful winds pushed the flames farther, Swain said. Known locally as the Diablo wind, they're similar to the Santa Ana wind in Southern California, and they reached an unusually high speed of 79 mph Sunday night. Coupled with relatively low humidity, the wind patterns quickly created havoc.
“This is very much a weather-driven fire, but there is definitely a climate component to the overall story, too,” Swain said.
The dead brush and trees were the result not just of this year's hot temperatures, but also of the state's historic drought, which officially ended with the rainfall last winter, said LeRoy Westerling, a management professor at the University of California, Merced's School of Engineering.
originally posted by: GBP/JPY
naw, there's no steel in the homes like a recliner frame or bed frames or shower plumbing or a friggin window frame
someone show me a hurricane strap anchor on a slab....ya see I'm your structures guy....commercial, seasoned structures rxpert
originally posted by: hounddoghowlie
a reply to: loam
it's a firestorm.
from the wiki, cause it's fast.
A firestorm is a conflagration which attains such intensity that it creates and sustains its own wind system. It is most commonly a natural phenomenon, created during some of the largest bushfires and wildfires. Although the word has been used to describe certain large fires, the phenomenon's determining characteristic is a fire with its own storm-force winds from every point of the compass. The Black Saturday bushfires and the Great Peshtigo Fire are possible examples of forest fires with some portion of combustion due to a firestorm, as is the Great Hinckley Fire. Firestorms have also occurred in cities, usually as a deliberate effect of targeted explosives such as occurred as a result of the aerial firebombings of Hamburg, Dresden, and the atomic bombing of Hiroshima.
This wind shear is capable of producing small tornadoes or dust devils which can also dart around erratically, damage or destroy houses and buildings, and quickly spread the fire to areas outside the central area of the fire.