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Temperatures are rising as we head out for the weekend under an intense and sprawling heat dome that will bring three-digit heat to 45 million Americans next week. Heat warnings and overheats and warnings cover the map in the Southwest Desert and California, with heat spreading to the central United States this weekend.
By early next week, the suffocating heat dome will shift to the eastern Lower 48, scorching the Ohio Valley, Midwest, Southeast, and Mid-Atlantic. Maximum values can range from 10 to 15 degrees above normal, with the peak readings above 90 and thermal indices above 100.
Excessive heat: Temperatures above 100 swell from Texas to California
The records could be threatened in very large cities with conditions that could be downright dangerous for the elderly, the homeless and other vulnerable groups.
The National Weather Service issued excessive warnings or heat warnings to more than 30 million residents of the southwestern desert through California’s central valley over the weekend.
High in the southwest desert
Phoenix and Las Vegas are under warnings of excessive heat until Sunday, with temperatures expected to break records.
“We usually see the first warning of excessive heat in early to mid-June, so it’s not uncommon in itself, but temperatures will be close to records,” said Jen Varian, a meteorologist with the National Weather Service. office in Las Vegas.
The record values are forecast for Thursday and Friday in Vegas – the number to be beat on Thursday is 108 degrees, and the highest level of 109 is expected. This exceeds the record set in 1996. The maximum temperature forecast for Saturday is 109 degrees would equal the record. The average temperature in Las Vegas at this time of year is about 100 degrees.
“Excessive heat is here. There are no changes in the thinking of the forecasts “, wrote the office of the meteorological service in Las Vegas in its online discussion of forecasts. “Temperatures will remain elevated to dangerous levels.”
He survived Sharpgate. He now heads the meteorological service.
The heat, which affects Las Vegas, covers most of southwest, covering southern and western Arizona, most of southern California, including the Inner Empire and deserts, and the densely populated San Joaquin Valley in California.
Phoenix, a city of nearly 1.7 million, is expected to reach 110 degrees on Thursday, 113 degrees on Friday, 114 degrees on Saturday and 113 degrees on Sunday. This should break the records on Thursday and Saturday and equalize one Friday. On Wednesday, for the first time this year, it hit 110 degrees.
“High to very high heat risk will be prevalent in the area until Sunday,” wrote the Phoenix Meteorological Service, which warns of excessive heat until Sunday.
Temperatures will continue to warm over the weekend, leading to excessive heat in much of the region. Stay cool and hydrated and don’t forget to check the back seat for your children and pets! #azwx #cawx pic.twitter.com/MMCwz5hrkp
– NWS Phoenix (@NWSPhoenix) June 9, 2022
Arizona’s Department of Environmental Quality has also issued an air quality warning, which means that ground-level ozone could reach dangerous levels. Ozone production near the surface is catalyzed by excessive heat and can cause difficulty breathing. The agency urges those who use petrol-powered equipment to wait until late in the day.
In Las Vegas and Phoenix, along with many other communities in the Southwest, the biggest concern is not daytime peaks above three digits – these are extremely warm night lows that may not fall below the 80’s in many places. .
“Low values at night are the worst part of it,” Varian said. “If we just have peaks approaching records and it’s getting cold at night, we probably won’t issue a warning of excessive heat. But for people who are homeless, may not have a home, or who are trying to save a penny with air conditioning, their bodies cannot cool down at night. Then the effects begin. “
Maricopa County has opened dozens of Phoenix subway cooling shelters, although most are open during the day. A county-shared website allows residents to search for the nearest location using their address.
In Las Vegas, the Salvation Army received funds from Clark County to reopen the daytime cooling shelter, which was closed in 2021 due to the coronavirus pandemic. Several other cooling shelters were opening.
Excessive heat warnings are in effect tonight for the northern parts of California’s Central Valley, where readings in the valleys and foothills are expected to range between 100 and 107 degrees today. The signals will probably be extended or reissued in the coming days.
“In addition to the high temperatures during the day, there will be little relief from the heat at night,” warned the Meteorological Service in Hanford, California.
Sacramento is expected to reach 101 degrees on Thursday afternoon, 105 degrees on Friday and 102 degrees on Saturday before returning to the early 1980s by Sunday. That could set a record on Thursday.
⚠️Hazardous heat is forecast on Friday for much of the valley and foothills. Hot day temperatures with low night temperatures will create a high risk of heat-related effects for the general population. Visit for heat preparedness tips. 🌡️ #CAwx pic.twitter.com/iBLtolKclb
– NWS Sacramento (@NWSSacramento) June 8, 2022
Heat warnings cover the rest of the Central Valley south to where the Heat Warning begins in Southern California, but also reaches west to the Gulf region. Downtown San Francisco is under no warning, but the maximum temperature of 81 degrees, expected on Friday, is about nine degrees above average.
In Death Valley, California, the highest is expected to reach 120 degrees on Friday and 121 on Saturday – challenging daily records, with the lowest at night at the Fernas Creek Visitor Center in the lower 1990s. Close needles should stand between 113 and 117 degrees, just a hair’s breadth from records.
Texas and the central United States
Tens of millions in the state of Lone Star are also ready to cope with the toasted temperatures. Unlike Westerners, however, the heat that will engulf Southeast Texas, including Houston and Galveston and Corridor 10, is not dry heat.
“The combination of almost record high temperatures and high dew points will lead to increasingly dangerous heat index values between 100 and 106 degrees today,” the Houston Meteorological Service said in a special weather statement. The service forecasts heat indices above 108 between Friday and Sunday, which could prompt it to issue a heat advice.
“Heat-related illnesses and deaths are preventable and all precautions for thermal safety must be taken, even if there are no valid heat recommendations!”
A very hot weekend is expected with maximum temperatures above 100 degrees, while the coastal places are rising until the 90s. Thermal index values above 105 are expected. Continue to take heat precautions to protect yourself from these hazardous conditions. #houwx #txwx pic.twitter.com/Jhq4ZROHCl
– NWS Houston (@NWSHouston) June 9, 2022
Houston could reach 100 degrees every day until Sunday before simmering back in the mid-90s.
“Yes, Houston is hot in the summer, but it’s not usually that hot in June,” he told SpaceCityWeather.com, a website about the Houston weather website.
Further north, Dallas has to sit around 102 degrees on Thursday and Friday before reaching 105 on Saturday and 103 on Sunday. As the heat dome stays overhead, Metroplex is likely to stay above 100 degrees until the middle of next week.
Austin will be between 100 and 105 every day, as will San Antonio, and there is no immediate relief.
The warmth is due to a high pressure dome that carries clear skies and hot, dry, sinking air. The jet flow deviates north from the high, bringing with it all the bad weather and storms. This allows plenty of sunshine, which makes it possible for sunlight to pour out and heat the earth without hindrance.
The science of heat domes and how drought and climate change are making them worse
This heat dome will focus over the Four Corners region on Saturday, but must cross east over the plains on Sunday and reach the eastern United States by Tuesday. It can then persist, leading to widespread maximum values 10 to 15 degrees above normal.
This will probably lead to what could be the first big heat wave on the East Coast this season.
Man-made climate changes charge heat waves like this, making them more intense and long-lasting.
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