By Chris Spears

DENVER (CBS4) – One of the biggest surges of monsoon moisture that Colorado has seen all season could arrive later this week and it may bring the threat of flash flooding.

Widespread showers and thunderstorms are in the forecast for almost the entire state by Thursday and Friday.

While we’re confident in a much cooler and unsettled period of weather as we wrap up the week, who’ll see the heaviest rainfall is still in question.

Below you will find three images from different computer models ran at 3 p.m. on Tuesday. They show potential rainfall through 6 p.m. on Friday.


When looking at long-term forecast models we’re not necessarily looking for exact totals in specific places so much as we’re looking for patterns and consistency in the outcomes, both in the current and future model runs.

In these examples all three models show the potential for a lot of water to fall, but the timing and locations of the heavier rain pockets may change as new data is received.


Historically in Colorado, early August is a peak time for deep tropical moisture courtesy of the monsoon and the potential for flash flooding.

We’ll watch this pattern closely from Colorado’s Weather Center at CBS4 and will keep you updated on any changes to the current outlook.

Meteorologist Chris Spears writes about stories related to weather and climate in Colorado. Check out his bio, connect with him on Facebook or follow him on Twitter @ChrisCBS4.