Almost the entire state of California will be affected by this heat wave, in addition to the major metropolitan areas of the Southwest. Many daily temperature records will be broken and some all-time records could also be threatened.
Although the southwest is known for its warm temperatures, these numbers are extreme.
A “very high” heat risk, the highest level (4 of 4), was issued for much of California, Nevada, Arizona and Utah. This includes cities such as Sacramento, Bakersfield and Palm Springs, California, Las Vegas, and Phoenix.
“Very high” simply means that the entire population, and not just the elderly or sick, will be at a very high risk of heat-related illness due to the long duration of the heat and the lack of relief for it. the night.
Utah’s current temperature record is 117 degrees. The town of St George could meet or exceed that record on Saturday.
Las Vegas has the potential to set a new all-time high temperature record this weekend. The current record high is 117 degrees and the National Weather Service is forecasting at least that temperature for Saturday and Sunday.
Sacramento also has the chance to surpass its record temperature of 114 degrees this weekend.
Low temperatures in Las Vegas on Saturday and Sunday mornings are expected to be 94 and 93 degrees, respectively. In Phoenix, low temperatures are unlikely to drop below 91 degrees.
This is a problem because these temperatures do not allow the body to cool down successfully at night. The temperature must drop to at least 80 degrees for recovery to begin. In fact, a person can lose up to 2 liters of fluid overnight due to sweating if the temperature does not drop below 85 degrees.
Heat affecting the electricity network
The California Independent System Operator (ISO) on Thursday said in a press release that “extreme temperatures across much of California” could result in a “potential lack of capacity on the state’s power grid.”
Residents were asked to voluntarily conserve electricity between 4 p.m. and 9 p.m. Friday to “ease the strain on the grid during crucial evening hours when solar power is reduced or is no longer available.”
The concern is that since the extreme heat is expected to continue throughout the weekend, this demand will exceed supply. The California ISO has warned that if this happens, rotating power outages will be implemented.
It comes after record heat in June.
Eight states recorded their hottest June on record: Arizona, California, Idaho, Massachusetts, Nevada, New Hampshire, Rhode Island and Utah.
Just over 15% of the United States saw all-time record high temperatures last month, the highest on record by NOAA.
All-time records were set in the Northwest on June 27-28, including state records in Washington and Oregon. Scientists reported this week that the heat wave in late June in the Pacific Northwest would have been “virtually impossible” without the effect of man-made climate change.
With even more all-time records potentially broken this weekend, the concern is whether the power grid will be able to meet demand.
CNN meteorologists Jennifer Gray and Hannah Gard contributed to this report.