Hail, Boulder
- When
- September 2, 4:10 PM MST
- Where
- Boulder County, 1 mi N of Longmont
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.180, -105.100
Hail in Colorado, September 2, 1999
8 hail, 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 8
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), 64 km away, was scanning. The volume nearest the first event began at 23:10 UTC.
Event by event
8 hail. Local standard time, as filed.
Hail, Weld
- When
- September 2, 4:15 PM MST
- Where
- Weld County, 6 mi E of Platteville
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.220, -104.700
Hail, Weld
- When
- September 2, 5:18 PM MST
- Where
- Weld County, La Salle
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.350, -104.700
Hail, Weld
- When
- September 2, 5:20 PM MST
- Where
- Weld County, 6 mi E of La Salle
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.350, -104.580
Hail, Weld
- When
- September 2, 5:25 PM MST
- Where
- Weld County, Kersey
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.380, -104.380
Hail, Morgan
- When
- September 2, 5:55 PM MST
- Where
- Morgan County, 23 mi W of Ft Morgan
- Measured
- 1.5 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.250, -104.230
Hail, Weld
- When
- September 2, 6:56 PM MST
- Where
- Weld County, 3 mi SW of New Raymer
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.500, -103.820
Hail, Weld
- When
- September 2, 7:49 PM MST
- Where
- Weld County, 14 mi NE of New Raymer
- Measured
- 1.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.680, -103.600
What these are
- 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.
The same day elsewhere
- Flash Flooding in South Dakota, September 2 to 3, 1999
- Hail and Damaging Winds in Texas, September 2 to 25, 1999
- Hail and Damaging Wind in Nebraska, September 2 to 3, 1999
- Waterspouts in Florida, September 2, 1999
- Waterspout in Texas, September 2, 1999
- Cold in California, September 2 to 3, 1999
- Waterspout in Florida, September 2, 1999
- Hail in Minnesota, September 2, 1999
- Funnel Cloud in Wyoming, September 2, 1999
- Lightning Strike in Louisiana, September 2, 1999
- Tornado in Nebraska, September 2, 1999
- Flood in Guam, September 2, 1999
More
Every storm in Colorado in 1999Every state in 1999This day in weather historyWarnings in Colorado, September 1999
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: 5718122, 5718123, 5718124, 5718125, 5718126, 5718127, 5718128, 5718129.