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This radar screenshot shows a rare, nasty phenomenon called a derecho, when a very long row of fast-moving, intensely windy thunderstorms travels across the country. In this case it began west of the continental divide... And knocked down several more big old trees at Cathie's cabin.

0606_1536_DerechoRadar.png (635 Kb) (under photos/20/Random/)

By Alan Silverstein, ajs@frii.com (page updated Tue Mar 10 18:16:39 MDT 2026)