Hail, Weston
- When
- June 5, 1:30 PM MST
- Where
- Weston County, 4 mi E of Four Corners
- Measured
- 1 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.070, -104.050
Tornadoes and Hail in Wyoming, June 5 to 27, 1999
11 hail, 6 tornado, 3 funnel cloud, 3 thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 3 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
- 23
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 Rapid City radar (KUDX), 98 km away, was scanning. The volume nearest the first event began at 20:31 UTC.
Event by event
11 hail, 6 tornado, 3 funnel cloud, 3 thunderstorm wind. Local standard time, as filed.
Tornado, Crook
- When
- June 5, 1:45 PM MST
- Where
- Crook County, 1 mi SW of Aladdin
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 10 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 44.620, -104.200
Brief touchdown. Path width and length estimated.
Hail, Campbell
- When
- June 5, 2:03 PM MST
- Where
- Campbell County, 30 mi SSE of Gillette
- Measured
- 1 in hail
- Reported by
- UNKNOWN
- Coordinates
- 43.880, -105.250
Hail, Campbell
- When
- June 5, 2:42 PM MST
- Where
- Campbell County, 5 mi N of Rozet
- Measured
- 0.75 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.350, -105.200
Funnel Cloud, Campbell
- When
- June 5, 2:55 PM MST
- Where
- Campbell County, 22 mi SE of Gillette
- Reported by
- TRAINED SPOTTER
- Coordinates
- 44.248, -105.548 (the zone’s center; the record gives no point)
Hail, Weston
- When
- June 8, 11:44 PM MST
- Where
- Weston County, Four Corners
- Measured
- 0.75 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.070, -104.130
Hail, Crook
- When
- June 12, 2:36 PM MST
- Where
- Crook County, 5 mi W of Moorcroft
- Measured
- 1.75 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.270, -105.050
Tornado, Campbell
- When
- June 12, 2:45 PM MST to 3:10 PM MST
- Where
- Campbell County, Wright to 22 mi SW of Wright
- Rating
- F0
- Path length
- 12 mi
- Path width
- 400 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.720, -105.900
Moved over open rangeland. Spotters watched the tornado for nearly 40 minutes before it dissipated.
Thunderstorm Wind, Crook
- When
- June 12, 3:02 PM MST to 3:09 PM MST
- Where
- Crook County, Moorcroft
- Measured
- 52 kt (60 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 44.270, -104.950
Wind speed estimated by law enforcement at 60 to 80 mph.
Tornado, Campbell
- When
- June 12, 3:15 PM MST to 3:49 PM MST
- Where
- Campbell County, Wright to 15 mi S of Wright
- Rating
- F0
- Path length
- 16 mi
- Path width
- 250 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.570, -105.680
Tornado reformed and moved southeast into Converse County.
Hail, Crook
- When
- June 12, 3:20 PM MST
- Where
- Crook County, 10 mi SW of Devils Tower
- Measured
- 0.75 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.480, -104.850
Thunderstorm Wind, Weston
- When
- June 12, 3:45 PM MST
- Where
- Weston County, Upton
- Measured
- 61 kt (70 mph)
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 44.100, -104.630
Tornado, Campbell
- When
- June 12, 4:20 PM MST
- Where
- Campbell County, 10 mi SW of Wright
- Rating
- F0
- Path length
- 1 mi
- Path width
- 30 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.620, -105.600
Brief touchdown. Tornado width and length estimated.
Funnel Cloud, Weston
- When
- June 15, 11:58 AM MST
- Where
- Weston County, 3 mi S of Upton
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.841, -104.568 (the zone’s center; the record gives no point)
Funnel Cloud, Campbell
- When
- June 15, 6:22 PM MST
- Where
- Campbell County, 20 mi W of Wright
- Reported by
- TRAINED SPOTTER
- Coordinates
- 44.248, -105.548 (the zone’s center; the record gives no point)
3 Funnel Clouds sighted. Short lived.
Tornado, Campbell
- When
- June 17, 5:12 PM MST to 5:30 PM MST
- Where
- Campbell County, 15 mi SW of Gillette
- Rating
- F0
- Path length
- 1 mi
- Path width
- 50 yd
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 44.130, -105.700
Brief touchdown. Tornado width and length estimated from reports.
Thunderstorm Wind, Campbell
- When
- June 17, 5:15 PM MST
- Where
- Campbell County, 2 mi SW of Gillette
- Measured
- 75 kt (86 mph)
- Reported by
- UNKNOWN
- Coordinates
- 44.270, -105.520
Hail, Campbell
- When
- June 17, 6:20 PM MST
- Where
- Campbell County, 10 mi N of Wright
- Measured
- 1.75 in hail
- Reported by
- UNKNOWN
- Coordinates
- 43.870, -105.470
Tornado, Campbell
- When
- June 17, 6:30 PM MST
- Where
- Campbell County, 10 mi N of Wright
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 10 yd
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.870, -105.470
Brief touchdown. Tornado width and length estimated.
Hail, Campbell
- When
- June 17, 7:00 PM MST
- Where
- Campbell County, Gillette to 20 mi SSW of Gillette
- Measured
- 1.75 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.170, -105.850
Hail, Campbell
- When
- June 19, 8:35 PM MST
- Where
- Campbell County, 5 mi N of Rockypoint
- Measured
- 0.88 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.970, -105.100
Hail, Campbell
- When
- June 27, 3:35 PM MST
- Where
- Campbell County, Gillette to 24 mi E of Gillette
- Measured
- 0.75 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.030, -105.130
Hail, Crook
- When
- June 27, 5:00 PM MST
- Where
- Crook County, 3 mi SE of Aladdin
- Measured
- 0.88 in hail
- Reported by
- UNKNOWN
- Coordinates
- 44.600, -104.130
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
- Funnel Cloud
- A rotating column of cloud extending from a thunderstorm that did not reach the ground.
- 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, June 5, 1999
- Tornadoes and Hail in Nebraska, June 5, 1999
- Hail and Damaging Wind in Texas, June 5, 1999
- Hail and Damaging Winds in Minnesota, June 5, 1999
- Hail and Damaging Winds in Wisconsin, June 5, 1999
- Hail and Damaging Winds in Wisconsin, June 5, 1999
- Hail in South Dakota, June 5, 1999
- Damaging Winds in North Dakota, June 5, 1999
- Hail and Damaging Winds in South Dakota, June 5, 1999
- Damaging Wind and Lightning Strike in Alabama, June 5, 1999
- Damaging Winds and Lightning Strikes in Wisconsin, June 5 to 6, 1999
- Hail and Damaging Wind in Florida, June 5, 1999
More
Every storm in Wyoming in 1999Every state in 1999This day in weather historyThe tornado archive for Wyoming, 1999Warnings in Wyoming, June 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: 5709568, 5709653, 5709569, 5709570, 5709654, 5709651, 5709571, 5709655, 5709572, 5709656, 5709574, 5709573, 5709657, 5709652, 5709658, 5709659, 5709575, 5709646, 5709660, 5709647, 5709648, 5709649, 5709650.