Author: Ben Castellani (Page 5 of 358)

Ben grew up in southwestern Pennsylvania and holds both a bachelor's and a master's degree in Meteorology, the latter being from CU Boulder. His hometown received nearly three feet of snow from the Storm of the Century back in March of 1993, sparking his initial interest in impactful weather. Ben currently works on remote sensing and data analysis software at NV5 Geospatial Software in Boulder.

Premium BoulderCAST Daily – Wed 09/16/26 | Another Tropically-Infused Setup That Likely Underperforms in the Denver Area

September 16, 2026 /

Yesterday's taste of fall was lovely wasn't it?! Highs only managed the low to mid 70s across the lower elevations, with Foothills spots stuck in the 60s. It was our coolest day since August 4th, but that refreshing break is already fading as we slide right back into above normal warmth today. Deep subtropical moisture continues pumping into the Four …

Premium BoulderCAST Daily – Tue 09/15/26 | Much Cooler Today, But the Stable Air Keeps Us Mostly Dry Again

September 15, 2026 /

The cold front slid through right on schedule around 2:00 AM, marked by a clean surge of gusty north winds and a switch to cooler upslope flow. Temperatures across the entire Urban Corridor are running 10–15° colder this morning compared to the record‑warm overnight readings we logged early Monday. A broad deck of low stratus is draped over Boulder and …

Premium This Weekend in Colorado Weather: A Quiet Finish to the Week Before Moisture Makes Another Move

September 10, 2026 /

We’re stepping into Thursday under clear bluebird skies and a legitimately refreshing start. Many spots along the northern urban corridor dipped into the 40s, while our station bottomed out at 48.5° — the coldest reading since June 16th. After nearly three months of relentless heat, even a brief flirtation with cool mornings is enough to trigger some early fall vibes. …

Premium BoulderCAST Daily – Wed 09/09/26 | Monsoon Slips South as a Front Pushes Our Temps Into the Comfortable Zone

September 9, 2026 /

The thin ribbon of monsoon moisture that had been draped across the Four Corners for days has sagged south, now pooled over New Mexico and far‑southeast Colorado. In its wake, a much drier westerly flow has taken over the Front Range, shutting down any meaningful storm potential. A shallow but punchy frontal boundary is sliding south across the Plains this …

Premium BoulderCAST Daily – Tue 09/08/26 | Despite a Healthy Monsoon Plume, Dry Air Undercuts Today’s Storm Potential Across the Front Range

September 8, 2026 /

Afew isolated thunderstorms bubbled up across the Boulder–Denver corridor on Labor Day, producing brief pockets of moderate rain and a couple rumbles of thunder. Nothing organized, but a few neighborhoods cashed in: 0.1" in parts of Boulder and up to 0.25" around Broomfield. Unfortunately, Monday was always the “best shot” day for rain in this pattern — if you missed …

Premium BoulderCAST Daily – Wed 09/02/26 | Monsoon Shutoff, a Handful of Weak Late‑Day Storms and the Pacific Hurricane Trio

September 2, 2026 /

GOES‑West imagery shows a deep ribbon of anomalously dry air draped across the entire Four Corners this morning, the direct result of the monsoon plume being shoved east and effectively shut off at its source. The dry conveyor extends all the way to Hawai‘i — a full‑blown anti–Pineapple Express — while Category 4 Hurricanes Lowell and Karina, as well as …

Premium BoulderCAST Daily – Tue 09/01/26 | Persistent Monsoon Plume Exits as Sunshine Returns to the Front Range

September 1, 2026 /

JSunshine on the Way ust about everyone managed to squeeze out a little rain yesterday, but—as expected—totals were modest. In the context of this brutally dry summer, though, the evening showers weren’t terrible, with most spots landing a few hundredths up to roughly 0.20". Not a drought-buster, but at least a brief interruption to the dryness and a day where …

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