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Premium BoulderCAST Daily – Tue 08/26/25 | Heavy rainfall in the cards again but the greatest risk is south/west of Denver

Anorthwest to southeast oriented boundary at the low to mid-levels will be situated over the state this afternoon. The boundary will allow moisture and lift to fuel scattered to numerous showers and storms over the higher terrain and Foothills, and isolated to scattered activity on the Plains this afternoon. Much of the area remains in a Marginal risk of excessive …

Premium BoulderCAST Daily – Sun 08/24/25 | Chance of Severe Storms This Evening

Astrong mid-level disturbance will track through this evening in the northwest flow aloft to favor the development of scattered severe thunderstorms. Shear and instability (below) will be more than sufficient, with surface flow out of the northeast with an approaching cold front and the mid-level flow around 30-40 mph. This flow will favor the development of storms capable of damaging …

Premium BoulderCAST Daily – Sat 08/23/25 | Staying cool with two chances for showers

Apossible sunrise surprise area of isolated to scattered showers or storms may move just along and east of the Denver Metro area this morning. Guidance is depicting a potential weak disturbance aloft that may track from Wyoming into eastern Colorado this morning. Whether or not it materializes, there will be the chance of a few showers into mid-morning, as well …

Premium BoulderCAST Daily – Fri 08/22/25 | The start of a cool and wet stretch

Deep moisture is in place today and tonight ahead of a cold front slated to move through sometime this evening. Moisture values, measured by precipitable water, are forecast to be between 1 and 1.3 inches, which is well above normal for late August in Colorado. That deep moisture will be realized as showers and storms develop to our northwest tied …

Premium BoulderCAST Daily – Wed 08/20/25 | Two more hot days, but there are hints of autumn in the extended

It’s another scorcher on tap today across the state as the Four Corners high keeps its grip locked in through Thursday. That ridge is doing what it does best—suppressing vertical motion and drying out the atmosphere. So for the Front Range, rain chances are basically nonexistent. The good news? Winds are staying tame under this setup, which will help keep …

Premium BoulderCAST Daily – Tue 08/19/25 | Heat steadily intensifies through Thursday, but change is taking shape for the weekend

The Front Range is leaning hard into a hotter, drier stretch today as high pressure tightens its grip. If you peek at this morning’s GOES-East water vapor imagery (with 500mb winds overlaid), you’ll spot the developing high centered near the Colorado–New Mexico border. It’s still a bit disorganized — scraggly, even — but it’s gaining strength. By tomorrow, it’ll be …

Premium BoulderCAST Daily – Sat 08/16/25 | Not as hot with some low 90s

Storm chances today will again be isolated to scattered in nature, depending on where you reside. Storms are expected to form upstream in the Foothills and High Country, moving onto the plains later this afternoon and evening. The HRRR and NEST models are bullish enough to warrant storm chances, but like always, it is hard to discern how many of …

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