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Premium BoulderCAST Daily – Sun 09/29/24 | Highs close to 90 and tropics are quite active still

September 29, 2024 /

Aridge of high pressure will slide off to our east just a tad today, over the northern Great Plains and upper Midwest. Southerly flow will be in full swing, aiding above normal temperature anomalies over much of our region. We should see highs right around the 90-degree mark this afternoon. There is relief on the way, though. A cold front …

Premium BoulderCAST Daily – Sat 09/28/24 | Warming back up for our Saturday

September 28, 2024 /

Aridge of high pressure will remain in place across the region, as indicated below. Anticyclonic flow will persist beneath and around the ridge this afternoon. Temperatures will warm up today relative to our Friday in the upper 80s. Then, on Sunday, the Front Range should inch close to the lower 90s. There is no rain to speak of today or …

BoulderCAST Daily – Fri 09/27/24 | A slightly cooler end to the week in Colorado as Helene continues to batter much of the eastern USA

September 27, 2024 /

Aweak frontal boundary moved through northeast Colorado overnight which will make for a more comfortable, less record shattering Friday for us. Yes, we did break the record high temperature yesterday for September 26th in both Boulder (92°) and Denver (93°). This was the second latest occurrence of 92°F on record in Boulder. You can see the subtle frontal boundary on …

Premium This Weekend in Colorado Weather: Unseasonably warm and sunny weather continues with at least three days of near-record autumn heat

September 26, 2024 /

Hot and sunny weather will unfold for our Thursday in the Front Range as high pressure remains in control of the western United States. A few clouds will arrive late in the day, but that's about the only weather to speak of. The daily record high to beat in Boulder today is 90° from 2021 --- we have a good …

Premium BoulderCAST Daily – Wed 09/25/24 | Near-record heat in the Front Range the next few days, Helene to impact Florida tomorrow as a massive major hurricane

September 25, 2024 /

All is quiet across Colorado this morning as a ridge embedded with dry air sits over the area. The low pressure which brought us the rain a few days ago is now over St. Louis. In addition to showing the dry conditions in our neck of the woods, this morning's zoomed-out GOES-East water vapor animation shows two tropical disturbances. An …

Premium BoulderCAST Daily – Tue 09/24/24 | Beautiful & seasonal today, but warming up the rest of the week with no rain in sight

September 24, 2024 /

An overnight shortwave has dropped south out of Canada and into the Upper Midwest with a stream of clouds pushing into the Front Range from the northeast. The nighttime microphysics satellite animation from GOES-East is shown below. Most of the thick lower clouds (white shadings) are remaining well off to our northeast. Only an influx of spotty cirrus clouds (dark …

Premium BoulderCAST Daily – Sun 09/22/24 | Rain and drizzle ending, but clouds and chilly weather remain

September 22, 2024 /

The mid-level shortwave and its associated trough axis will slowly slide east by early this evening. As that happens, we'll see rain slowly ending from west to east. But even as the rain ends, the clouds will persist. The HRRR (below) and NAM-NEST (not shown) roughly indicate that rain should end this afternoon between 2 and 4 pm. Some patchy …

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