Sanj Narayan

ALT An extremely dangerous heat wave will build over the Southwest into the weekend, and likely peak in intensity on Sunday for much of the region. Dangerous heat may continue into next week for parts of the region. All-time heat records could be approached or reached at some locations in the Southwest. This would be most likely on Sunday, and particularly in the San Joaquin Valley, Mojave Desert, and Great Basin regions. Phoenix is also likely to register their hottest week on record by 7-day average temperature. Take the heat seriously and avoid time outdoors. Temperatures will reach levels that would pose a health risk, and be potentially deadly, to anyone without effective cooling and/or adequate hydration. Heat is the leading weather-related killer in the U.S. Next week, dangerous heat will build in the Gulf Coast and Southeast U.S. again, with widespread heat index readings over 110 degrees, before refocusing in the Southwest and western U.S. between July 22 and July 28.