The National Weather Service (NWS) Phoenix office issued an Excessive Heat Warning for desert areas of southwestern Arizona and southeastern California, including Yuma, Parker Valley, and Kofa, from shortly after midnight on the 22nd through the evening of the 28th. Afternoon highs were expected to reach 106 to 117 degrees, while elevated humidity was expected to bring severe to extreme heat risk.
Areas Affected
The warning covered 12 desert areas in southwestern Arizona and southeastern California, including Yuma, Parker Valley, and Kofa. It was in effect from 12:45 a.m. local time on the 22nd through 8 p.m. on the 28th, with extreme heat expected to persist for nearly a week. The nearby Palm Springs area was also experiencing intense heat and high humidity during the same period.
What RV Travelers Need to Know
The National Weather Service advised moving strenuous outdoor activity to the early morning or evening, wearing loose, lightweight clothing, and drinking plenty of water. Travelers should learn the early signs of heat exhaustion and heat stroke; if symptoms worsen, move immediately to shade or an air-conditioned space and call 911 in an emergency. RVers traveling through this area should check their air conditioner and generator before departure and have an awning or supplemental ventilation ready even when stopped. It is also wise to check the locations of county-operated cooling centers before leaving.
Photo: NPS Photo/Craig Stocks, Organ Pipe Cactus National Monument (https://www.nps.gov/orpi/index.htm)