Tornado, Weld
- When
- July 14, 12:50 PM MST to 12:51 PM MST
- Where
- Weld County, 2 mi S of Nunn
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 25 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.670, -104.770
Tornadoes and Damaging Winds in Colorado, July 14, 1998
2 tornado, 2 thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 2 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 4
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 Cheyenne radar (KCYS), 54 km away, was scanning. The volume nearest the first event began at 19:52 UTC.
Event by event
2 tornado, 2 thunderstorm wind. Local standard time, as filed.
Tornado, Weld
- When
- July 14, 1:15 PM MST
- Where
- Weld County, 10 mi SW of Nunn
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 25 yd
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.600, -104.900
Two small landspouts touched down briefly but did no damage.
Thunderstorm Wind, Adams
- When
- July 14, 4:45 PM MST to 5:00 PM MST
- Where
- Adams County, Brighton
- Measured
- 61 kt (70 mph)
- Reported by
- NWS EMPLOYEE(OFF DUTY)
- Coordinates
- 39.874, -104.338 (the zone’s center; the record gives no point)
Dry microburst winds estimated to 70 mph (61 kts) snapped branches 4 inches in diameter. In addition, some road signs in Brighton were twisted and blown down.
Thunderstorm Wind, Denver
- When
- July 14, 5:06 PM MST
- Where
- Denver County, (Den)denver Intl Arp
- Measured
- 53 kt (61 mph)
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 39.762, -104.876 (the zone’s center; the record gives no point)
Dry microburst winds to 61 mph (53 kts) were measured at Denver International Airport.
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.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Illinois, July 14 to 15, 1998
- Heat and Hail in Texas, July 14, 1998
- Heat in Texas, July 14, 1998
- Hail and Damaging Winds in Iowa, July 14 to 15, 1998
- Tornado and Hail in Texas, July 14, 1998
- Lightning Strike in Minnesota, July 14, 1998
- Flash Flooding and Hail in Minnesota, July 14, 1998
- Hail and Damaging Winds in Nebraska, July 14 to 15, 1998
- Damaging Wind in Texas, July 14, 1998
- Damaging Wind in Minnesota, July 14, 1998
- Flash Flood in Alabama, July 14, 1998
- Flash Flooding in Mississippi, July 14, 1998
More
Every storm in Colorado in 1998Every state in 1998This day in weather historyThe tornado archive for Colorado, 1998Warnings in Colorado, July 1998
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: 5662488, 5662489, 5662486, 5662487.