Tornado, Fremont
- When
- June 20, 12:15 PM CST
- Where
- Fremont County
- Rating
- F1
- Path length
- 2 mi
- Path width
- 20 yd
- Property damage
- $250
- Coordinates
- 43.480, -109.880
Tornadoes and Hail in Wyoming, June 20, 1977
6 tornado, 3 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
- $400
- Crop damage
- None recorded
- Events
- 9
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
6 tornado, 3 hail. Local standard time, as filed.
Hail, Fremont
- When
- June 20, 2:00 PM CST
- Where
- Fremont County
- Measured
- 0.75 in hail
- Coordinates
- 42.830, -108.720
Hail, Yellowstone Park
- When
- June 20, 3:15 PM CST
- Where
- Yellowstone Park County
- Measured
- 1.25 in hail
- Coordinates
- 44.630, -110.500
Tornado, Johnson
- When
- June 20, 3:25 PM CST
- Where
- Johnson County
- Rating
- F1
- Path width
- 33 yd
- Property damage
- $30
- Coordinates
- 43.520, -106.980
Tornado, Platte
- When
- June 20, 5:15 PM CST
- Where
- Platte County
- Rating
- F1
- Path width
- 33 yd
- Property damage
- $30
- Coordinates
- 42.050, -105.170
Tornado, Platte
- When
- June 20, 5:30 PM CST
- Where
- Platte County
- Rating
- F1
- Path width
- 33 yd
- Property damage
- $30
- Coordinates
- 41.930, -105.150
Hail, Platte
- When
- June 20, 5:50 PM CST
- Where
- Platte County
- Measured
- 1.75 in hail
- Coordinates
- 42.050, -104.970
Tornado, Converse
- When
- June 20, 6:45 PM CST
- Where
- Converse County
- Rating
- F1
- Path width
- 33 yd
- Property damage
- $30
- Coordinates
- 42.920, -105.780
Tornado, Goshen
- When
- June 20, 7:20 PM CST
- Where
- Goshen County
- Rating
- F1
- Path width
- 33 yd
- Property damage
- $30
- Coordinates
- 42.070, -104.520
What these are
- 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.
- 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
- Tornado in West Virginia, June 20, 1977
- Tornado in Maryland, June 20, 1977
- Tornado and Hail in Florida, June 20, 1977
- Tornado and Hail in Kansas, June 20, 1977
- Tornado in Georgia, June 20, 1977
- Damaging Winds in Alabama, June 20, 1977
- Hail and Damaging Winds in North Carolina, June 20, 1977
- Hail and Damaging Wind in New Jersey, June 20, 1977
- Hail in Nebraska, June 20, 1977
- Damaging Wind in Missouri, June 20, 1977
- Damaging Wind in Pennsylvania, June 20, 1977
- Damaging Wind in Indiana, June 20, 1977
More
Every storm in Wyoming in 1977Every state in 1977This day in weather historyThe tornado archive for Wyoming, 1977
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: 10162955, 10162956, 10162957, 10162958, 10162959, 10162960, 10162961, 10162962, 10162963.