(CNN)The West is in the midst of a record-breaking heat wave this week, as all-time records were shattered and daily records broken in over a dozen states.

Even by desert standards, the heat wave in the Southwest is atypical. On Thursday, the National Weather Service in Tucson tweeted that the city recorded a temperature of 100 degrees at 8:14 a.m., the second earliest time in the day recorded since 1948.

The Tucson airport hit 100° this morning at 814 am. Dating back to 1948, this is the 2nd earliest time in the day that Tucson has hit 100°. The earliest time is 8:02 am which occurred on June 20, 2017. The high that day was 116°. #azwx

— NWS Tucson (@NWSTucson) June 17, 2021 That’s only slightly later than the earliest time recorded for reaching 100 degrees, which was in 2017 on June 20, when Tucson hit 100 degrees at 8:02 a.m. The high that day was 116 degrees. The all-time high temperature recorded in Phoenix of 122 degrees occurred on June 26, 1990. High heat so early in the day have reinforced the need for the excessive heat warnings that have been in place throughout Arizona, Nevada, Utah and California all week. Nighttime temperatures can be dangerousRead MoreOn Friday morning, Phoenix recorded a low temperature — yes, a LOW temperature — of 92. This is a problem because it doesn’t allow the body to successfully cool down at night.The temperature needs to drop to at least 80 degrees for recovery to begin. In fact, a person can lose up to 2 liters of fluid overnight through sweating if the temperature never drops below 85 degrees.

Excessive heat has extended to our overnight hours as well this week. Assuming this holds through Midnight, #Phoenix just set another record warm low temperature of 92°F, which is tied for the third warmest ever in June (93°F was warmest on 6/25/2017 and 6/27/1990). #azwx pic.twitter.com/af5FWxWQJ5

— NWS Phoenix (@NWSPhoenix) June 18, 2021 Half a dozen Western states will have morning low temperatures between 10-20 degrees above normal through Sunday.Find out how hot it will get where you are>>The weather service issues heat advisories and warnings, with safety as their top priority.Heat is the number one cause of weather-related deaths in the US, and providing guidance about the likelihood of heat-related ailments — including heat cramps, heat exhaustion, stroke and possibly death — helps protect the public in extreme heat events.Numerous heat records are being smashedRecord-breaking temperatures spread from California to Montana this week. On thursday, the all-time high temperature was tied in Palm Springs, California at 123 degrees, breaking the previous June record of 122 degrees. Salt Lake City tied its all-time record high of 107 degrees. The old record was notably set in July — when temperatures are usually at their highest for the year in that region. This comes after daily record highs were broken Sunday, Monday and Tuesday in Salt Lake, each with temperatures exceeding 100 degrees. Records are kept for all-time highs (and lows), and also record high or low temperatures for specific months.

[5:43 PM] 107°F. We have now tied the highest temperature EVER recorded at Salt Lake City in any month of the year, in the last 147 years of records. It has only happened twice before: July 2002 and July 1960. #utwx pic.twitter.com/lySLjV748q

— NWS Salt Lake City (@NWSSaltLakeCity) June 15, 2021 Death Valley, California, shattered its record high daily temperature for Thursday at 128 degrees — the previous record was 122 degrees set in 1917 — and was just 1 degree shy of tying the record for the month of June. The hottest recorded temperature in Death Valley was 134 degrees in July 1913. Las Vegas set two daily records this week after falling just 1 degree short of its record of 117 degrees on Wednesday.Record temperatures were set Thursday as well in the Colorado cities of Alamosa, Colorado Springs and Pueblo. Thursday was the earliest day on record in Colorado Springs to hit 100 degrees. Denver hit 100 degrees Thursday, marking only the sixth time in historical record keeping that it has reached 100 degrees on three or more consecutive days.

Denver (DIA) reached 100° for the third day in a row. This is only the 6th time in the period of record that Denver has reached 100° on three or more consecutive days. This also sets a new daily record high temperature (previous record 98°). #COwx pic.twitter.com/h4mMmJSXyc

— NWS Boulder (@NWSBoulder) June 17, 2021 Weekend stays hot for the WestFrom Sunday to Tuesday alone, 159 maximum daily high temperature records were broken, according to National Oceanic and Atmospheric Administration. More than 50 additional records could be broken through Sunday in many of the same states that had them earlier in the week. Temperatures will remain 10 to 20 degrees above average through the weekend for much of the West.The good news is that the heat begins to wane by the start of next week across the Southwest. By Wednesday, the heat breaks a bit in the Pacific Northwest as well.However, since we are only just two weeks into meteorological summer, long-term cooler temperatures aren’t expected for quite some time.

Source Link:
https://www.cnn.com/2021/06/18/weather/heat-wave-records-west-forecast/index.html

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