Hail, Jefferson
- When
- August 11, 12:45 PM MST
- Where
- Jefferson County, Indian Hills
- Measured
- 0.75 in hail
- Coordinates
- 39.586, -105.250 (the zone’s center; the record gives no point)
Hail and Damaging Wind in Colorado, August 11, 1994
4 hail, 1 thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 5 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
- 5
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 19:46 UTC.
Event by event
4 hail, 1 thunderstorm wind. Local standard time, as filed.
Hail, Adams
- When
- August 11, 3:22 PM MST
- Where
- Adams County, Brighton
- Measured
- 1 in hail
- Coordinates
- 39.874, -104.338 (the zone’s center; the record gives no point)
Hail, Jefferson
- When
- August 11, 4:31 PM MST
- Where
- Jefferson County to Westminster
- Measured
- 0.75 in hail
- Coordinates
- 39.586, -105.250 (the zone’s center; the record gives no point)
Hail, Jefferson
- When
- August 11, 4:40 PM MST
- Where
- Jefferson County, Westminster
- Measured
- 0.75 in hail
- Coordinates
- 39.586, -105.250 (the zone’s center; the record gives no point)
Thunderstorm Wind, Jefferson
- When
- August 11, 4:40 PM MST
- Where
- Jefferson County, Arvada (5nw)
- Measured
- 54 kt (62 mph)
- Coordinates
- 39.586, -105.250 (the zone’s center; the record gives no point)
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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
- Damaging Wind in Puerto Rico, August 11, 1994
- Tornadoes and Hail in South Dakota, August 11, 1994
- Hail and Damaging Winds in Virginia, August 11, 1994
- Damaging Wind in Kentucky, August 11, 1994
- Damaging Wind in North Carolina, August 11, 1994
- Damaging Wind in Florida, August 11, 1994
- Hail in Nebraska, August 11, 1994
More
Every storm in Colorado in 1994Every state in 1994This day in weather historyWarnings in Colorado, August 1994
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: 10317185, 10316667, 10317186, 10317187, 10317188.