Hotter here & there, but few records, reports Colorado’s state climatologist in assessing Colorado’s July 12-16 heat

 

It got hot in Colorado during July 12-16, but few records were broken.

True, it reached 100 degrees F in Colorado Springs for only the 12th time in record keeping. And Fort Collins hit 102 degrees, one shy of the all-time record.

So reports Russ Schumacher, the state climatologist, in his blog at the Colorado Climate Center.

Dillon got to 84 degrees, “which is pretty warm for a location that has never recorded a 90-degree day,” Schumacher reported. In the Front Range urban corridor, particularly from Palmer Divide through Pueblo, most locations were more than 8 degrees above average for the four-day streak.

How does this heat wave rank against the records going back in some cases 150 years?

It was a top-10 four-day heat wave in the northern Front Range and Pikes Peak regions. More broadly across Colorado, it was the 14th hottest four-day heat wave since 1951.

“Overall, what we’ve seen in Colorado isn’t that the most-extreme heat waves are getting more extreme, “Schumacher writes.

“Record-smashing events are very rare even in a warming climate, and when air masses are hot enough aloft to have the potential for record-breaking heat, they often have just enough moisture to produce clouds and storms that reduce the surface temperature by a degree or two. Instead, what we’re seeing is a steady increase of heat: heat waves that would have been few and far between in the 20th century are now becoming commonplace.”

The record four-day heat for much of Colorado was in late June 2012. And at some individual long-term stations on Colorado’s eastern plains, heat waves in July 1934 and July 1936 still rank as hottest even now.

Allen Best
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