Flash Flood, San Miguel
- When
- July 31, 2:00 PM MST to 8:00 PM MST
- Where
- San Miguel County, East Portion
- Property damage
- $50,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 38.004, -108.406 (the zone’s center; the record gives no point)
Heavy rains resulted in widespread flash flooding, mudslides, and turned Leopard Creek into a raging torrent which overflowed its banks and washed across State Highway 62, undercutting the roadbed. Eyewitnesses reported trash cans, canoes, trees, and other debris floating down the swollen San Miguel River which parallels State Highway 145.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GJT wrote it up.
Heavy rains resulted in widespread flash flooding, mudslides, and turned Leopard Creek into a raging torrent which overflowed its banks and washed across State Highway 62, undercutting the roadbed. Eyewitnesses reported trash cans, canoes, trees, and other debris floating down the swollen San Miguel River which parallels State Highway 145. The flash floods and mudslides filled up the lower floors of some houses up to 4 feet deep, tore down fences, washed out driveways, washed away elevated gasoline and propane tanks, and floated some vehicles. In addition to the mudslides and rockslides on State Highways 62 and 145, eight county roads were damaged; ten mudslides occurred on Fall Creek Road, three mudslides covered South Fork Road above Ames, and additional mudslides were reported at Silver Pick, Sawpit Hill, Ophir Pass, Tomboy Road, and on Deep Creek Road. Flood damage occurred in the communities of Fall Creek, Placerville, and Sawpit. Pea-sized hail accumulated up to 8 inches deep on State Highway 62 atop Dallas Divide.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 1999Every state in 1999This day in weather historyWarnings in Colorado, July 1999
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5715319.