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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 2h

🏔️ ⬅️ Deep upslope flow is present over the Front Range today with thick clouds blanketing the area, but will it actually rain? Best chance of a light pavement wetting through the afternoon and evening remains south of I-70... #cowx #denver #weather

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 7h

Today’s *Premium* storm update breaks down how this once‑promising setup unraveled, why southern Colorado is now squarely in the bullseye and what scraps of moisture the Front Range can still squeeze out as the system passes by to our south: bouldercast.com/storm-update... #COwx #Denver

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 21h

💦 Polo's remnants getting rapidly pulled northward toward the American Southwest. Flooding ongoing across large portions of New Mexico and Arizona this evening. #COWx #NMwx #AZwx #Polo #FlashFlood

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 21h

New rainfall projections are in for the Boulder-Denver area. Beneficial rain is nearly off the table now. Best chance to see rain is south of I-70 Wednesday afternoon and evening. Further north and west you are, the greater the chance you may be skipped entirely. #COWX

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 22h

Two baldies high up in a dead tree, enjoying the quiet Tuesday afternoon, watching over a dry, barren field of prairie dogs #cowx

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 23h

TUESDAY 9/29 3:00PM UPDATE: Goodbye, Flood Watches! It's not often you see a Flood Watch cancelled, but that's how this storm is going. The four zones closest to Denver have been dropped as the big, wet Southwest soaker trends further southeast away from the Front Range. #COWX #Colorado #denver

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 29/09/2026

And apparently it's turned into a really nice Tuesday afternoon...😩 #COwx

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 29/09/2026

📉 Another storm collapse seems imminent for the Front Range as the more southern track of #Polo's remnant low appears favored. The trusty Euro model was one of the few showing a deluge in #Denver all along. It's now joined the drier crowd in its last few runs. #COWX #Colorado

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 29/09/2026

TUESDAY 9/29 10AM UPDATE 💦🌀 Will it be a soaker or a near miss for Denver? We break down why the models are struggling, what the key track differences mean for your neighborhood & where flooding and snow may become real concerns as the storm unfolds: bouldercast.com/a-soaker-or-... #COwx #Colorado

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

MONDAY 9/28 1PM UPDATE: Flood Watches continue to creep northward in Colorado for this week as it becomes more certain that the heaviest bands of rain will setup further north Tuesday night through Wednesday. #COwx #Denver #colorado #weather

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

We already squandered the usual August El Niño precipitation buff. Is October to follow?

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

Nothing screams fall like a huge, persistent Western heatwave for the first half of October... #COWx #Colorado #Drought #Denver

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

Well, at least all of Colorado has received at least 2 inches of rain this summer! Wait... #COWX #Boulder #Weather

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

Now Category 3 Hurricane Polo will make landfall in Baja California later today before moving across the very warm Gulf of California into Sonora as it weakens. Polo has definitely taken the scenic route on the way to influencing Colorado's weather... #COwx #polo #colorado #Monsoon

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

With a high of 85° on Sunday, Boulder has now tied its FULL calendar year record for number of 80° days at 128 (with 2024) 🥵🏆 This count will undoubtedly increase with a warm, dry first half of October expected in the Front Range 📈 #COWx #Boulderwx #Denver #Colorado #Hot2026

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

The good news? The forecast gets considerably quieter late week, with drier weather and warming temperatures returning by Thursday and Friday. This first week or two of October will feature rather mild, mundane weather as this impressive late-season monsoon finally calls it quits to 2026☀️

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

Southern Colorado has a much higher confidence of significant rainfall (and flooding), while the Front Range could see a wide range of outcomes. A sharp cooldown is also expected, with temperatures dropping 10–15 degrees below normal by midweek.

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

For Boulder and Denver, the big question is how much rain we actually get. Forecast guidance remains all over the place, with the eventual track and interaction of these systems determining whether we see a soaking rain or something more modest.

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

A complicated weather pattern is taking shape across Colorado this week as a deep low pressure system dives into the Southwest and interacts with the remnants of Hurricane Polo. That combination will pull an unusually deep plume of tropical moisture northward into eastern Colorado.

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

FRONT RANGE WEATHER UPDATE MONDAY 9/28 8:00 AM MDT A Big Soaker for the State This Week, But Denver’s Forecast Remains Uncertain 🌧️ #Cowx #colorado #denver #weather #Monsoon #Polo

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 28/09/2026

UPDATE: SUNDAY 9/27 5:30 PM ☔️ Quick Thoughts on Heavy Rain Potential This Week We're continue to track the potential for widespread, soaking rainfall in the Denver Metro area later this week .... 😀 #COWX #Denver #colorado #weather

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 26/09/2026

✅ Weekly outlook forecast verification for September 21-25, 2026. Forecast issued 8AM Sep 21st. Boulder official climate site (when possible) used for verification. ☔️ 3 days of rain = 0.10" Boulder, 1.18" Denver 🎯17° total error, largest Friday #COWx #Monsoon #Colorado

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 26/09/2026

About an hour of steady light rain in the books in Boulder. Best rain of the week. Could have been better. #cowx

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 25/09/2026

3:40PM FRI 9/25: Rain and thunder. Pockets of heavy rain, gusty winds, small hail, and a sprinkle of landspouts. #cowx

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 25/09/2026

2:15PM FRI 9/25 UPDATE: A nice-looking line of showers and thunderstorms are building across the higher terrain now and will be pushing through Boulder/Denver soon, then gone by early evening. Brief heavy rain, gusty winds, small hail, localized flooding possible #COWX

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 25/09/2026

180 MPH winds.... Beautiful yet terrifying.

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 25/09/2026

Current odds of this happening just right are about 15% based on latest ensembles and cluster analysis #COWX

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 25/09/2026

The Euro model continues to advertise the remnants of Category 5 Hurricane #Polo making a beeline directly into the #Denver area next week leading to several inches of rain and heavy mountain snow across #Colorado. Still a fairly low-chance outcome, but we will be watching #COWx

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 24/09/2026

September 24th throwback. Can you guess the 14er? #COWx

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 24/09/2026

.....PACIFIC TROPICAL UPDATE.... The ongoing historic El Niño event is keeping the eastern Pacific very active in late September... #COWX

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 24/09/2026

Colorado Forecast Update: Thursday Gloom, a Beautiful Weekend and Some Big, Wet Questions for Next Week Beyond Thursday's gloom and the quiet weekend, the forecast becomes much less certain as the first significant autumn trough approaches: bouldercast.com/colorado-for... #COwx #Monsoon #Polo

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 23/09/2026

So many clouds! High temperatures busted by 5-10° today depending on your source and the prospects for rain look bleak in the Front Range. Not likely to see more than a few drops or few hundredths it seems today and tonight. #COWX

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 23/09/2026

⛈️ What will likely be the final monsoon surge of the season will bring gloomy skies, but limited rain to the Denver area the next few days 🍜 Highs in the 60s Thursday will require dusting off your favorite soup recipe 🥳 Plus 90° season is all but over #COwx #monsoon #denver #colorado #weather

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 23/09/2026

And for those in #Boulder, there is some excitement for you, too. Crystal clear skies are creating perfect viewing of the beautiful waxing gibbous moon! Just took this photo now

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 23/09/2026

TUE 9/22/26 7:45PM: A slow moving torrential thunderstorm this evening has prompted a Flash Flood Warning southeast of Denver. Includes Parker, Centennial and Lone Tree where up to 2 inches of rain has fallen. #COWX #FlashFloood #Colorado #Denver #weather

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 23/09/2026

And for those in #Boulder, there is some excitement too. Crystal clear skies are creating perfect viewing of the beautiful waxing gibbous moon. Just took this now!

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 22/09/2026

Hurricane hunter aircraft just measured the central pressure in #Polo at 889 mb, the 2nd lowest ever in the eastern Pacific basin (behind 2015's Patricia 872 mb).

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 22/09/2026

Accumulating snow and dangerous lightning will impact most of Colorado's highest peaks this week. Which late-season 14er are you attempting? bouldercast.com/summitcast-h... #COWX #Colorado #COsnow

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 22/09/2026

When the entire state of New Mexico gets more rain this week than Boulder has seen in the last 4 months... #COWX #NMwx

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 22/09/2026

Observed (red X) vs Google Deepmind intensity ensemble forecast for Polo

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 22/09/2026

Happy Fall! The long-awaited autumnal equinox brings an official end of summer this evening at 6:05 PM MDT. Now if we can just get some fall weather going... 🍂☃️ #COWx #Fall #Denver #colorado #Autumn #Snow

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 22/09/2026

In just 30 hours, Hurricane #Polo off the western Mexican coast explosively intensified from a weak tropical storm with 45 MPH sustained winds and a pressure of 1003 millibars to a Category 5 monster hurricane with 165 MPH winds at 920 millibars. Incredible.

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BoulderCAST Weather 🏔️⛈️ @bouldercast.com · 21/09/2026

Following a record low snow season and an all-time record warm summer, the Arapaho Glacier in western Boulder County is looking rough, even compared to just a decade ago 🧊📉 #COWx #colorado #glacier #Boulder #Denver

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