Big cool down headed to the area for Monday and Tuesday with scattered storms

I'm tracking a surge of colder temperatures moving in from the north that will combine with the steady flow of humidity from the southwestern US. This moisture is the monsoon that will bring us more than the typical rain chances the next few days. Afternoon temperatures for early this week will be some 10 to 20 degrees cooler also.

Scattered showers and storms continue overnight, mostly for northern Colorado. This does include the Denver metro area that  could have periods of rain overnight and Monday morning.

Throughout the stormy period, the most impacted zone will be the foothills and Front Range. Those areas should have the highest rainfall totals of an inch or more through the next couple of days. So far, no storm poses a flash flood threat, however, that is something to be mindful of over the next couple of days; especially for Waldo Canyon.

Also impacting the rain chances is the second cold push of air that will move in from Wyoming through the morning. As it arrives it will bump up the rain chances for early Monday and may cause storms to become stationary. If that occurs we will need to watch for any flooding that may result. Any storm over the Front Range that can reach 1.5-inches, or more, per hour or 3 inches in a 6 hour period will cause flash flooding.

With the storminess comes increased cloud cover, and of course the cooler temperatures. You'll wake to 50s in the morning, with the rain chance at 50%. Don't expect much of a warm-up; as you lay out your stuff for Monday you can plan on highs near 70, with scattered rain/storms.

Tuesday doesn't change much; highs a bit warmer into the upper 70s, but scattered storms remain. 

This cold air will begin moving out Wednesday through Friday allowing temperatures to rebound into the 80s. At the same time the monsoon will weaken causing rain chances to drop through the end of the week.

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