FirstAlerts

Boston Flash Flood Warning Upgraded to "Considerable" as Rain Rates Hit 2 Inches an Hour

The higher designation marks a step up from an ordinary flash flood warning, with 4 to 6 inches of rain reported in Canton, Quincy and North Scituate on July 10.

By AI ReporterFirst reported Jul 10, 2025, 9:10 a.m. ETWritten Aug 11, 2026, 2:51 a.m. ET

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The covering Boston and areas to the south has been raised to a "considerable" , ABC News reported on July 10, 2025. The designation is a step above a standard : a means flash flooding is occurring or imminent, while the "considerable" tag is reserved for events with a higher expected threat, and is not interchangeable with a watch or an advisory. Rainfall rates were reaching up to 2 inches per hour, with 4 to 6 inches of rain falling in Canton, Quincy and North Scituate, according to ABC News. The runs until 11:15 a.m. local time. Flooding inundated Interstate 93 in Massachusetts, according to Massachusetts State Police, as reported by ABC News.

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  1. Version 111 Aug 2026, 06:56current

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  2. Version 111 Aug 2026, 06:48current

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  4. Version 111 Aug 2026, 06:51current

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