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Debris Flow — Santa Barbara, California
January 9, 2018 · NOAA Storm Events record
Event narrative (NOAA)
Intense rainfall generated a large and deadly mud and debris flow in the community of Montecito, around the burn scar of the Thomas fire. Automated rain gauges in the area indicated very intense rainfall, reaching as high as 0.54 inches in 5 minutes. The intense rainfall resulted in a mud and debris estimated to be 15 feet high. This event resulted in the confirmed deaths of 21 residents (2 missing) as well as destroying 128 residences and damaging 307 others. Highway 101 was closed for days due to the mud and debris.
Other notable debris flow events in California
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.