BOULDER, Colo. — On one of the hottest days of the year, hundreds of people found a way to cool off in Boulder.
An annual tradition returned Friday morning as hundreds jumped into the chilly water of Boulder Creek to travel to work via an inner tube.
Boulder's annual Tube to Work Day is called the world's greatest traffic jam and a bonding opportunity each summer.
Tubers checked in at Eben G. Fine Park before tubing downstream to Boulder Central Park and beyond.
Boulder and Colorado's Front Range, including the Denver metro area, is forecasted to reach 100 degrees on Friday, Saturday and Sunday. Monday could also see a high in the upper 90s.
While hitting 100 degrees in Denver isn't uncommon during the summer, it is rare to have two or more days in a row with a high of 100 degrees.
The National Weather Service has issued heat advisories in Colorado along most of the Interstate 25 corridor, Denver metro area, and eastern plains from 10 a.m. Friday and continuing through the weekend.
The hottest recorded temperature for Denver is 105 degrees, and it's only happened five times. The last time was June 28, 2018.
According to the Colorado Climate Center, the hottest recorded temperature for Colorado has been 115 degrees at John Martin Dam near Lamar, about 209 miles southeast of Denver.