Author: Ben Castellani (Page 39 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.

May 2025 Graphical Weather Review: Lush landscapes, Foothills snow, and tornadoes, oh my!

June 5, 2025 /

May 2025 brought cool, rainy days to the Front Range, nurturing lush, green landscapes ahead of what is expected to be a hot and dry summer. The month also featured striking weather events, including a few picturesque tornadoes nearby and multiple rounds of snow blanketing the high Foothills. Here’s a quick and colorful graphical recap of our weather during May and how it relates to climatology.

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Premium This Weekend in Colorado Weather: Stormy skies give way to warmer days

June 5, 2025 /

For the next couple of days, a broad trough will linger over the region, keeping temperatures cooler than normal with plenty of chances for rain. But starting Saturday, a ridge will begin forming over the Pacific Northwest and will bring warmer, drier conditions to our area. Not scorching hot, and not completely dry—just a shift toward more typical early summer …

Premium BoulderCAST Daily – Wed 06/04/25 | A bit warmer with scattered storms this evening, more of the same tomorrow

June 4, 2025 /

Adisturbance will approach Colorado today from the southwest bringing warmer temperatures but continued chances for late-day thunderstorms. The system can be seen below as a petite closed-low pressure spinning over the Sonoran Desert in southwestern Arizona. Notice the clouds already streaming into the Front Range this morning well out ahead of this system. Much of the moisture and energy from …

Premium BoulderCAST Daily – Tue 06/03/25 | Drizzle ends early but we stay chilly; warmer with more storms tomorrow

June 3, 2025 /

Yesterday’s thick cloud cover prevented thunderstorm development across the region during the afternoon and early evening, reducing the risk of severe storms. However, a cold front pushed through later in the evening, combined with upslope flow overnight, bringing widespread rainfall—especially to areas west and southwest of Denver where the upslope had the greatest impact. The regional radar animation below captures …

Premium This Weekend in Colorado Weather: Finally turning warmer but not necessarily drier

May 29, 2025 /

Yesterday’s shortwave disturbance brought widespread rain across the Front Range, with Boulder recording around 0.4 inches, pushing May’s total above 4 inches—about an inch above normal. Satellite imagery this morning shows that yesterday's rambunctious shortwave has pushed off to the south, with drier air infiltrating the area from the north at the mid-levels. This will spell out drier weather today, …

BoulderCAST Daily – Wed 05/28/25 | Widespread thundershowers as a disturbance drops through, some severe southeast of Denver

May 28, 2025 /

Happy Wednesday, everyone! May is typically Boulder’s wettest month of the year, and this week is proving no exception. For the fifth consecutive day, rain is expected to make an appearance in Boulder as a shortwave disturbance moves from north to south across the region. This feature is visible in this morning’s GOES-East water vapor imagery as an east-west-oriented trough axis …

Premium BoulderCAST Daily – Tue 05/27/25 | More storms later today, a better chance on Wednesday

May 27, 2025 /

Holiday weekend rainfall totals range from 0.5 to 3.0"" across the Front Range, with fairly high variability due to the sporadic nature of the storm cells each afternoon. Boulder's official total was 1.10", while Denver (DIA) recorded 1.85". A stagnant weather pattern is set to unfold across the western United States for the rest of the week. While there will …

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