Tornado in Colorado, July 21, 2000

Name: Tornado in Colorado, July 21, 2000
Start: 2000-07-21T16:50
End: 2000-07-21T17:15
Location: Colorado

July 21, 2000 · NWS BOU · 1 event in 1 county or zone

1 tornado, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. 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), 71 km away, was scanning. The volume nearest the first event began at 23:51 UTC.

Open the radar archive at this moment

Event by event

1 tornado. Local standard time, as filed.

Tornado, Weld

When: July 21, 4:50 PM MST to 5:15 PM MST
Where: Weld County, 6 mi N of Masters
Rating: F1
Path length: 8 mi
Path width: 440 yd
Reported by: STORM CHASER
Coordinates: 40.383, -104.250

The tornado touched down 6 miles north of Masters, crossed Riverside Reservoir in the form of a waterspout, then travelled south-southeast towards Empire Reservoir, about 4 miles southeast of Masters where it dissipated. Since the tornado touched down in open country, damage was minimal. The twister tore up fences and a sprinkler irrigation system. In addition, four ditch riders, one on a three wheel all-terrain vehicle, did find themselves in the path of the storm and had to take cover in a ditch. The twister picked up the ATV and smashed it into some nearby trees. None of the men were injured.

What these are

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.

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

The same day elsewhere

Every storm in Colorado in 2000 Every state in 2000 This day in weather history The tornado archive for Colorado, 2000 Warnings 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: 5173663.