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

September 2, 2026 / Ben Castellani

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 …

Ben Castellani

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.

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