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Flash Flood in San Bernardino County, California

Flash Flood February 17, 2017 – February 18, 2017 · San Bernardino County, California

$3.5M
Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Flood waters and related erosion caused a collapse of lane number 5 along Interstate 15. A fire truck and big rig were caught up and destroyed in the collapse. No injuries were reported but damages to the Interstate reached into the millions.

The wider storm

A strong trough and associated Pacific cold front swept into Southern California from the west, bringing strong winds, heavy snow and rain. The storm was noteworthy for the strong prefrontal southerly winds that produced significant tree damage over the coast and valleys. In the mountains the ski resorts received 1-2 ft of snow, while elevations as low as 5,000 ft saw a few inches of accumulation. Rainfall ranged from 2-6 inches along the coastal slopes to 1-2 inches at the coast. At the beaches surf heights reached 8 to 12 ft. Damages, primarily from wind, reached into the millions of dollars.

Began near Cajon (34.3124, -117.4797).

Source: NOAA Storm Events Database, event 681033. Narratives are written by the National Weather Service forecast office that issued the report.

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