DISCUSSION: As forecasted, high pressure in the southwest United States has led to record-breaking heat. On June 20, 2017, Las Vegas, Nevada and Needles, California tied their all-time record high temperatures at 117°F and 125°F, respectively. Death Valley, California lived up to its name by reaching its new record high temperature for June 20th, hitting a scorching 127°F and surpassing its previous record of 126°F set back in 2016. This trend has become quite common among a myriad of locations across the southwest, as most of the region has soared well into triple digits the past week.
Excessive heat warnings were issued for parts of southwest Arizona, southern Nevada and most of inland California. Aside from shattering records, the extreme heat has promoted wildfires, canceled flights, caused roads to buckle, and knocked out power (excessive use of electricity and air conditioners can strain the power system).
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© 2017 Meteorologist Nicholas Quaglieri