Excessive heat warning in effect Sunday for Phoenix, surrounding cities

PHOENIX — The National Weather Service has issued an excessive heat warning for Phoenix and other areas of Arizona on Sunday.

The excessive heat warning for Sunday includes portions of the central desert, which includes the greater Phoenix area, as well as the western desert, where Yuma is located.

An Excessive Heat Warning remains in effect for the central and western deserts on Sunday. The forecast high of 104 in Phoenix would be 16 degree above normal and break the old record of 101 for the day. Drink lots of water and stay hydrated! #azwx pic.twitter.com/dmdFpVE4kd

— NWS Phoenix (@NWSPhoenix) April 25, 2020

Forecasters said temperatures could reach 107 degrees will produce “dangerously hot conditions” in Phoenix and other parts of south-central Arizona.

This is the earliest heat warning by almost two weeks. May 6, 2018 previously was the earliest that a warning was issued for Phoenix, the weather service said.

Excessive heat warnings go into effect when the predicted daytime high reaches 105 degrees and the high heat lasts for two hours or more.

Overexposure to high heat can cause heat cramps and heat exhaustion to developing, possibly leading to heat stroke, the weather service said.

The Salvation Army said it would open 12 heat-relief stations in Apache Junction, Avondale, Chandler, Glendale, Mesa, Phoenix, Surprise and Tempe.

The Arizona Humane Society noted that trails in Phoenix’s mountain parks system are closed to dogs when temperatures reach over 100 degrees, which can burn dogs’ paws and cause overheating.

Following Sunday’s weather, temperatures will slightly cool off early next week before ramping back up to 105 in Phoenix by Wednesday, according to the weather service.

Following the heat event on Sunday, high temps will cool slightly early next week. But be aware that it will heat up again by the middle of next week with highs around 105 in Phoenix by next Wednesday. No real relief from the heat is expected anytime soon. #azwx pic.twitter.com/yH5iuU75NH

— NWS Phoenix (@NWSPhoenix) April 25, 2020

The weather service advices residents to stay indoors in air-conditioned buildings, drink more water than usual and dress appropriately for the heat.

The Associated Press contributed to this report.

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