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Colorado Monsoon Update: Subtropical Moistures Surges to End the Week, Cooler and Storm‑Friendly Pattern Holds Through the Weekend

After weeks of sizzling heat and hydrological disappointment, a deep surge of monsoon moisture is pushing into the Front Range today, with precipitable water values approaching 200% of normal and a highly efficient rainfall environment already in place. Satellite imagery and overnight boundary interactions are signaling an active convective day ahead, with both severe and flooding hazards on the table Thursday. Monsoon storm chances will progressively decrease but ultimately stick around through the weekend alongside below normal temperatures. We dive into the forecast specifics, including the monsoon moisture transport, mesoscale boundaries, severe and flood risk, expected rainfall amounts, and how the weekend will play out as subtropical moisture slowly retreats.

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Premium BoulderCAST Daily – Wed 08/12/26 | Today’s Heat Is the Finale — Cooler, Wetter, & Less Smoky Days Lie Ahead

Today is the day we've all be waiting for! A much‑needed pattern shift— one that's been six sizzling, bone‑dry weeks in the making — is finally beginning to take shape across Colorado. The atmosphere has been locked in a stubborn ridge pattern since early July, suppressing moisture, amplifying the heat, and leaving the Front Range with little more than passing …

Premium BoulderCAST Daily – Tue 08/11/26 | Cooler, Wetter Weather Takes Over Through the Extended

High pressure remains parked to our south and west this morning, basically centered right over the Four Corners. That placement is giving us a textbook monsoon setup on GOES-East water vapor: subtropical moisture surging north into the Desert Southwest, then hooking east across Utah and into the Western Slope. It’s the long‑way‑around route into Colorado, and as usual, upstream terrain …

This Week in Colorado Weather: August 10, 2026

As we kick off the week, the Front Range is staring down a few more days of stubborn August heat — but that pattern is about to crack. A midweek shift will pull cooler air, deeper monsoon moisture, and widespread storms back into Colorado, including a real shot at heavy rainfall. After weeks of haze, heat, and bone‑dry afternoons, the atmosphere finally looks ready to turn the page. We break down what this transition means for the Boulder-Denver area, and how long the cooler, wetter pattern is poised to stick around.

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Premium BoulderCAST Daily – Sun 08/09/26 | Heat and Smoke Continues; Watching a Late-Week Cool Down

Hot and smoky is the theme again for our Sunday. The current weather alerts are unchanged from Saturday with Air Quality Alerts and a Heat Advisory in effect for the Front Range cities. Highs in the upper 90s will be typical once again today through Tuesday. Smoke levels continue to be a concern this afternoon and evening. Total column smoke …

Premium BoulderCAST Daily – Sat 08/08/26 | Clouds, Virga Breezes and Thick Smoke May Keep Us Just Shy of 100°

Hot, smoky, and stubborn — that’s the theme again today as the Four Corners heat dome tightens its grip over Colorado. Near‑record highs are still on the table, but the atmosphere is throwing us just enough curveballs to keep the forecast interesting. GOES-East imagery continues to show west–northwest flow pouring into the Front Range, with a subtle uptick in mid‑level …

Premium BoulderCAST Daily – Fri 08/07/26 | Smoke‑Soaked Heat Dome Intensifies Heading Into the Weekend

The persistent Four Corners heat dome will remain firmly entrenched through the weekend, keeping our synoptic pattern effectively locked in place. Under this stagnant ridge, broad subsidence continues to dominate the area, compressing the lower troposphere, warming the boundary layer, and suppressing vertical motion. For the Front Range, that translates to two main impacts: heat and smoke, both of which …

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