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Intense, record-breaking heat impacted the Desert Southwest in mid-June 2016. For some cities, the temperatures reached levels not seen in years.

Here are some notables on the record-breaking heat each day.

Sunday's Heat Notables (June 19, 2016)

Tucson, Arizona, saw its hottest day in more than 20 years when it topped out at 115 degrees. This temperature has been reached or exceeded there only four other times dating back to 1894.

Phoenix set a daily record high temperature of 118 degrees Sunday, which also ranks as the fifth hottest day on record in the city . This was also the hottest day in Phoenix since June 2013.

In southwest Arizona, Yuma maxed out at 120 degrees, making it the fourth hottest day on record there.

Monday's Heat Notables (June 20, 2016)

Palm Springs, California, missed its all-time record high by just one degree when it topped out at 122 degrees. However, this did tie the June record high in the city.

Needles, California, soared all the way to 125 degrees Monday afternoon, tying its all-time record high and setting a new June record high at that location.

In Los Angeles, the temperature topped out at 101 degrees. Nearby Burbank hit 111 degrees, setting a daily record high.

Las Vegas set a new daily record high at 115 degrees on Monday. This was last reached on July 2, 2013.

The hottest location in the nation was Death Valley, California, where it maxed out at 126 degrees, setting a daily record.

Tuesday's Heat Notables (June 21, 2016)

Casper, Wyoming, set a new daily record high at 100 degrees. The old record was 97 in 1988. This was the earliest 100-degree day ever recorded in Casper, with records dating back to 1939.

Pueblo, Colorado, set a new daily record high at 105 degrees. The old record was 104 in 1981.

Cheyenne, Wyoming, tied their daily record high by reaching 95 degrees. They last reached that temperature in 1874.

Needles, California, only got down to 98 degrees for a morning low. The afternoon high then reached 117 degrees, tying the record of 117 from 2008.

The heat was deadly in Arizona where at least four heat-related deaths were confirmed.

(LATEST NEWS: Extreme Heat Kills 4 Hikers in Arizona )

Records Set Prior to the Southwest Heat

Prior to the arrival of the heat in the Southwest, parts of the Plains and South set record highs.

Columbia, Missouri, broke its old record high of 96 degrees (set in 1952) by reaching 99 degrees on Wednesday.

Des Moines, Iowa, tied its old record high of 96 degrees (set in 1913) on Wednesday.

Colorado Springs, Colorado, broke its old record high of 91 degrees (1978) by reaching 92 degrees on Thursday.

Paducah, Kentucky, hit 100 degrees Thursday, the third earliest date on record they reached the century mark.

Cape Girardeau, Missouri hit 101 degrees Thursday, the second earliest date they reached triple digits.

Macon, Georgia broke its previous record of 100 degrees (2015 and 1944) by reaching 101 on Friday.

Hastings, Nebraska shattered its previous record of 96 degrees (1998) by reaching 102 degrees on Friday.

El Paso, Texas tied its old record high of 108 degrees (set in 1980) on Saturday

How to Prepare For Extreme Heat

This type of heat can be life-threatening for some, especially if you aren't adequately prepared. Remember: heat-related illnesses, such as heat exhaustion and heat stroke, are possible under these extreme conditions. If you are traveling with young children or pets, please do not leave them unattended in a hot vehicle.

The National Weather Service has issued some great heat safety tips.

Drink before you are thirsty.

Do NOT leave kids or pets in the car, even for a minute.

Reduce time in the sun.

Avoid strenuous activity; postpone outdoor activities.

Seek air-conditioned buildings.

Help the elderly, kids and pets stay cool.

Keep window blinds closed.

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