The main purpose of this ongoing blog will be to track planetary extreme, or record temperatures related to climate change. Any reports I see of ETs will be listed below the main topic of the day. I’ll refer to extreme or record temperatures as ETs (not extraterrestrials).😉
Main Topic: Heatwave Koch Ends Leaving Continued Devastating Wildfires in Its Wake
Dear Diary. Perhaps, and we hope, Heatwave Koch will be the last major heat episode of the waning summer season for the United States. Using my criteria, what was left of Heatwave Koch fell below my CAT1 level because all heat advisories were canceled for the Southern California area earlier this morning due to an influx of cooler Pacific air:
Rest in Peace (going into hell through) Heatwave Koch SEP 3-11, 2024.
Here is my criteria for naming U.S. heatwaves for 2024, which might get tweaked for warm season 2025 depending upon feedback:
All that stated, major CAT3 Koch, which it could be argued briefly got up to my historic CAT4 level because a couple of all-time records were approached in Southern California, along with prior heatwaves going back through the summer created tender dry vegetation and low humidity producing many conflagrations. Don’t forget that California had its hottest July on record and its hottest summer overall:
So what we are left with is “the ghost of Koch,” which are widespread areas of National Weather Service red flag fire watches and deadly not well contained fires, particularly in Southern California:
(For more notes on the other big weather problem of the day, Hurricane Francine, as noted by the big area of watches and warnings on the above map, see my Weather Section.)
The good news is that wildfires should get contained with time due to a big western weather pattern change:
Here are more details about what is burning in the West from CNN:
Man arrested on arson charges as wildfires burn out of control in Southern California and more evacuations are ordered
By Associated Press
Updated 8:16 AM EDT, Wed September 11, 2024
Heavy smoke rises from a wildfire burning near a residential area on Tuesday in Irvine, California. wayne/VCGPIX/AP
Trabuco Canyon, California (AP) — A man was arrested on arson charges Tuesday as three major wildfires in California created apocalyptic-looking plumes of smoke that filled skies east of Los Angeles amid a blistering heat wave, threatening tens of thousands of homes and other structures.
Evacuation orders were expanded Tuesday night as the fires grew and included parts of the popular ski town of Big Bear and the entire community of Wrightwood, with about 4,500 residents. Authorities implored people to leave their homes.
“There is no property that is worth risking your life for,” Los Angeles County Sheriff Robert Luna said.
In recent years wildfires have regularly burned in and around Wrightwood, a picturesque mountain town 60 miles east of Los Angeles known for its 1930s cabins. Authorities expressed frustration in 2016 when only half the residents heeded orders to leave.
Janice Quick, the president of the Wrightwood Chamber of Commerce, said a friend texted to tell her that the friend’s home had been consumed by fire, while another friend was watching through her ring camera as embers rained down on her home.
Quick said in the late afternoon she was eating lunch outside with friends and they were rained on by embers the size of her thumbnail that hit the table and made a clinking sound.
“I’ve never seen anything like this and I’ve been through fires before,” said Quick, who has lived in Wrightwood for 45 years.
Meanwhile, in the San Bernardino National Forest, some 65,600 homes and buildings were under threat by the Line Fire, including those under mandatory evacuations and those under evacuation warnings, nearly double the number from the previous day.
Residents along the southern edge of Big Bear Lake were told to leave the area Tuesday night, according to the San Bernardino County Sheriff’s Department. It’s unclear how many people were affected in the area, which is a popular destination for anglers, bikers and hikers.
Justin Wayne Halstenberg, 34, was arrested Tuesday on three arson charges in connection to the Line Fire, including arson of structures or forest land, according to the sheriff’s department and jail records. Halstenberg is being held on $80,000 bond, the sheriff’s department said. It’s unclear whether he’s retained an attorney.
The blaze had charred more than 51 square miles of grass and brush and blanketed the area with a thick cloud of dark smoke. The acrid air prompted several districts in the area to close schools through the end of the week because of safety concerns. Three firefighters have been injured since the blaze was reported Thursday, state fire managers said.
In Orange County, firefighters used bulldozers, helicopters and planes to control a rapidly spreading blaze called the Airport Fire that started Monday and spread to about 3 square miles in only a few hours. The blaze was ignited by a spark from heavy equipment being used by public workers, officials said.
By Tuesday night, it had charred more than 30 square miles and was heading over mountainous terrain into neighboring Riverside County with no containment, said Orange County Fire Authority Capt. Steve Concialdi. It burned some communications towers on top of a peak, though so far officials said they did not have reports of the damage disrupting police or fire communication signals in the area.
Concialdi said the fire was burning away from homes in Orange County, but there are 36 recreational cabins in the area. He said authorities don’t yet know if the cabins were damaged or destroyed by the blaze.
Two firefighters who suffered heat-related injuries and a resident who suffered from smoke inhalation were treated at a hospital and released.
Sherri Fankhauser, her husband and her daughter set up lawn chairs and were watching helicopters make water drops on a flaming hillside a few hundred yards away from their Trabuco Canyon home on Tuesday.
They didn’t evacuate even though their street had been under a mandatory evacuation order since Monday. A neighbor did help Fankhauser’s 89-year-old mother-in-law evacuate, Fankhauser said. The flames died down last night but flared up again in the morning.
“You can see fire coming over the ridge now,” Fankhauser said Tuesday afternoon. “It’s getting a little scarier now.”
She said she trusted the crews would get things under control and that firefighters were keeping them informed.
In Northern California, a fire measuring less than a square mile that started Sunday burned at least 30 homes and commercial buildings and destroyed 40 to 50 vehicles in Clearlake City, 110 miles north of San Francisco, officials said. Roughly 4,000 people were forced to evacuate by the so-called Boyles Fire, which was about 50% contained Tuesday night.
Other major fires were burning across the West, including in Idaho, Oregon and Nevada, where about 20,000 people had to flee a blaze outside Reno. The uncontained Davis Fire burned at least one home and threatened dozens more. It originated in the Davis Creek Regional Park in the Washoe Valley and was spreading through heavy timber and brush, firefighters said.
An emergency declaration issued for Washoe County by Nevada Gov. Joe Lombardo on Sunday said about 20,000 people were evacuated from neighborhoods, businesses, parks and campgrounds.
More than 600 firefighters in the area held their own Tuesday but were bracing for worsening weather conditions Wednesday, which could see dangerously strong winds and dry conditions. The National Weather Service in Reno said it was the first time in five years and only the sixth time in history that they’ve labeled the threat as a “particularly dangerous situation.”
All off-duty firefighters in the Reno area have been ordered back to work Wednesday.
“I’ve never done that in the 12 years I’ve been chief,” Truckee Meadows Fire Chief Charles Moore said Tuesday.
CNN’s Melissa Alonso contributed to this report.
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:
Here is more new August 2024 climatology. (More can be found on each daily post during September.):
Here is More Climate News from Wednesday:
(As usual, this will be a fluid post in which more information gets added during the day as it crosses my radar, crediting all who have put it on-line. Items will be archived on this site for posterity. In most instances click on the pictures of each tweet to see each article. The most noteworthy items will be listed first.)