Hail, Lincoln
- When
- August 9, 4:13 AM MST
- Where
- Lincoln County, Hugo
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.130, -103.470
Tornadoes and Flash Flood in Colorado, August 9, 1998
7 hail, 3 tornado, 1 lightning, 1 thunderstorm wind, 1 flash flood, 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
- 6
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 13
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 national radar mosaic for the moment the first event began.
Event by event
7 hail, 3 tornado, 1 lightning, 1 thunderstorm wind, 1 flash flood. Local standard time, as filed.
Lightning, Larimer
- When
- August 9, 12:00 PM MST
- Where
- Larimer County, 13 mi NW of Estes Park
- Injuries
- 6 direct, 0 indirect
- Reported by
- BROADCAST MEDIA
- Coordinates
- 40.666, -105.461 (the zone’s center; the record gives no point)
Six people received minor injuries when lightning struck a nearby scenic overlook atop Trail Ridge Road. The charge apparently travelled across the ground and shocked the group.
Hail, Douglas
- When
- August 9, 1:56 PM MST
- Where
- Douglas County, 14 mi NW of Larkspur
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.380, -105.070
Hail, Douglas
- When
- August 9, 2:15 PM MST
- Where
- Douglas County, 11 mi SW of Castle Rock
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.250, -105.020
Hail, Douglas
- When
- August 9, 2:35 PM MST
- Where
- Douglas County, Franktown
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.380, -104.750
Tornado, Adams
- When
- August 9, 2:48 PM MST
- Where
- Adams County, 10 mi N of Bennett
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 25 yd
- Reported by
- STORM CHASER
- Coordinates
- 39.900, -104.430
Hail, Morgan
- When
- August 9, 3:02 PM MST
- Where
- Morgan County, 16 mi SSW of Ft Morgan
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.030, -103.920
Tornado, Weld
- When
- August 9, 3:10 PM MST
- Where
- Weld County, 10 mi SE of Roggen
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 25 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.070, -104.230
Tornado, Morgan
- When
- August 9, 3:20 PM MST
- Where
- Morgan County, Hoyt
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 25 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.020, -104.070
Thunderstorm Wind, Weld
- When
- August 9, 3:45 PM MST
- Where
- Weld County, 10 mi S of Roggen
- Measured
- 53 kt (61 mph)
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.020, -104.370
Hail, Washington
- When
- August 9, 4:30 PM MST
- Where
- Washington County, 10 mi ENE of Anton
- Measured
- 2 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.800, -103.050
Hail, Weld
- When
- August 9, 4:41 PM MST
- Where
- Weld County, 1 mi SW of New Raymer
- Measured
- 1.25 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.520, -103.800
Flash Flood, Washington
- When
- August 9, 5:30 PM MST to 6:30 PM MST
- Where
- Washington County, 14 mi SE of Elba
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.971, -103.201 (the zone’s center; the record gives no point)
Heavy rain, up to 2 inches in less than an hour, caused flash flooding problems in portions of southern Washington County. Some roads were impassable near Arickaree School, 14 miles southeast of Elba.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Lightning
- A lightning strike that killed, injured or caused damage.
- 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.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Hail and Damaging Winds in Michigan, August 9 to 24, 1998
- Hail and Damaging Winds in Minnesota, August 9, 1998
- Damaging Winds and Lightning Strike in Oklahoma, August 9, 1998
- Flash Flood and Damaging Wind in Arizona, August 9, 1998
- Flash Flooding and Lightning Strike in Michigan, August 9, 1998
- Flash Flooding in Minnesota, August 9, 1998
- Hail and Damaging Winds in Minnesota, August 9, 1998
- Hail and Damaging Winds in Wisconsin, August 9, 1998
- Lightning Strike in Florida, August 9, 1998
- Damaging Wind and Lightning Strike in Arkansas, August 9, 1998
- Damaging Winds in Oklahoma, August 9, 1998
- Damaging Wind in Florida, August 9, 1998
More
Every storm in Colorado in 1998Every state in 1998This day in weather historyThe tornado archive for Colorado, 1998Warnings in Colorado, August 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: 5664308, 5664554, 5664309, 5664310, 5664311, 5664312, 5664313, 5664314, 5664315, 5664316, 5664317, 5664318, 5664319.