Colorado, 1997Tornado and Flash Flood in Colorado, June 6, 1997
June 6, 1997 · NWS BOU · 3 events in 2 counties and zones
1 tornado, 1 flash flood, 1 hail, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 3
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.
Event by event
1 tornado, 1 flash flood, 1 hail. Local standard time, as filed.
Tornado, Boulder
- When
- June 6, 1:15 PM MST to 1:25 PM MST
- Where
- Boulder County, 3 mi SE of Boulder
- Rating
- F1
- Path length
- 0.1 mi
- Path width
- 50 yd
- Coordinates
- 39.980, -105.230
A tornado touched down near Baseline Reservoir. The tornado struck a home, tearing off part of the roof. A storage building nearby was nearly levelled and 5 trees were uprooted. The twister then moved onto Baseline Reservoir forming a huge waterspout. Several recreational vehicles and a boat dock were also damaged.
Flash Flood, Adams
- When
- June 6, 3:00 PM MST to 5:30 PM MST
- Where
- Adams County, Thornton
- Coordinates
- 39.874, -104.338 (the zone’s center; the record gives no point)
A nearly stationary line of thunderstorms dumped 4.6 inches of rain onto portions of Thornton. Extensive flooding of streets, underpasses and other low lying areas was reported. Several businesses were flooded and basement in the area damaged.
Hail, Adams
- When
- June 6, 3:35 PM MST
- Where
- Adams County, 2 mi S of Henderson
- Measured
- 0.75 in hail
- Coordinates
- 39.880, -104.870
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Tornado and Flash Flooding in Texas, June 6 to 21, 19971 death · 1 injured · $180,000 · F1 · 36 events
- Flash Flooding and Hail in Texas, June 6, 1997$1.6 million · 1.75 in hail · 8 events
- Flash Flooding and Flooding in Montana, June 6 to 29, 1997$295,000 · 1.75 in hail · 36 events
- Hail in Missouri, June 6, 1997$1.0 million · 2 in hail · 2 events
- Flash Flooding in South Carolina, June 6, 1997$155,000 · 2 events
- Flash Flooding in Texas, June 6, 1997$95,000 · 10 events
- Damaging Wind in Arizona, June 6, 1997$100,000 · 1 event
- Hail and Damaging Wind in Arizona, June 6, 1997$60,000 · 0.75 in hail · 3 events
- Flash Flooding and Lightning Strike in Texas, June 6 to 7, 1997$45,000 · 4 events
- Tornadoes in Wyoming, June 6, 1997F1 · 3 events
- Tornado in Wyoming, June 6, 1997F1 · 1 event
- Damaging Wind in Texas, June 6, 1997$20,000 · 1 event
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: 5607321, 5607322, 5607323.