Hail, Boulder
- When
- September 17, 4:54 PM MST
- Where
- Boulder County, Boulder
- Measured
- 0.88 in hail
- Coordinates
- 40.093, -105.358 (the zone’s center; the record gives no point)
Hail in Colorado, September 17, 1993
10 hail, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 10 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
- $5,000
- Crop damage
- None recorded
- Events
- 10
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
10 hail. Local standard time, as filed.
Hail, Boulder
- When
- September 17, 5:00 PM MST
- Where
- Boulder County, Boulder
- Measured
- 0.75 in hail
- Coordinates
- 40.093, -105.358 (the zone’s center; the record gives no point)
Hail, Boulder
- When
- September 17, 5:04 PM MST
- Where
- Boulder County, Boulder
- Measured
- 0.75 in hail
- Coordinates
- 40.093, -105.358 (the zone’s center; the record gives no point)
Hail, Boulder
- When
- September 17, 5:06 PM MST
- Where
- Boulder County, Lafayette
- Measured
- 0.75 in hail
- Property damage
- $5,000
- Coordinates
- 40.093, -105.358 (the zone’s center; the record gives no point)
Hail, Adams
- When
- September 17, 5:38 PM MST
- Where
- Adams County, Brighton
- Measured
- 0.75 in hail
- Coordinates
- 39.874, -104.338 (the zone’s center; the record gives no point)
Hail, Adams
- When
- September 17, 5:41 PM MST
- Where
- Adams County, Brighton
- Measured
- 1.75 in hail
- Coordinates
- 39.874, -104.338 (the zone’s center; the record gives no point)
Hail, Adams
- When
- September 17, 5:50 PM MST
- Where
- Adams County, Brighton
- Measured
- 0.75 in hail
- Coordinates
- 39.874, -104.338 (the zone’s center; the record gives no point)
Hail, Washington
- When
- September 17, 6:06 PM MST
- Where
- Washington County, Last Chance
- Measured
- 0.75 in hail
- Coordinates
- 39.971, -103.201 (the zone’s center; the record gives no point)
Hail, Adams
- When
- September 17, 6:07 PM MST
- Where
- Adams County, Bromley Lane
- Measured
- 0.75 in hail
- Coordinates
- 39.874, -104.338 (the zone’s center; the record gives no point)
Hail, Weld
- When
- September 17, 6:08 PM MST
- Where
- Weld County, Lochbuie
- Measured
- 1 in hail
- Coordinates
- 40.555, -104.392 (the zone’s center; the record gives no point)
Severe thunderstorms rumbled across portions of Northeast Colorado. Hail up to 1.00-inch in diameter fell over much of the area. Dime-size hail damaged several roofs of residences in Lafayette (18 miles northwest of Denver).
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
More
Every storm in Colorado in 1993Every state in 1993This day in weather historyWarnings in Colorado, September 1993
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: 10316558, 10316559, 10316560, 10316561, 10316642, 10316643, 10316644, 10318238, 10316645, 10318267.