Colorado, 2000

Flash Flood in Colorado, July 16, 2000

July 16, 2000 · NWS BOU · 1 event in 1 county or zone

1 flash flood, as filed by the National Weather Service.

Where it happened

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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

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 radar

The Denver radar (KFTG), 139 km away, was scanning. The volume nearest the first event began at 22:57 UTC.

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Grand

When
July 16, 4:00 PM MST to 5:00 PM MST
Where
Grand County, Granby
Reported by
NEWSPAPER
Coordinates
40.103, -106.118 (the zone’s center; the record gives no point)

Heavy rain, up to 3.5 inches in an hour, deluged the streets, drains, homes and businesses in Granby. In many places, water was gushing out of the storm drains as the drainage system could not handle the high volume of water. Some hillsides were washed out and many yards had surface soil stripped clean. Water up to 2 feet in depth covered some of the cities' streets. Several offices and businesses were also flooded. The Granby Library, in the basement of Granby Town Hall, was also flooded. Numerous books and computers were damaged forcing the closure of the library for a week.

What these are

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.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Colorado in 2000Every state in 2000This day in weather historyWarnings in Colorado, July 2000

Sources

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: 5173662.