Tornado, Mellette
- When
- July 1, 6:08 PM MST
- Where
- Mellette County, 5 mi E of Norris
- Rating
- F0
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.470, -101.100
Tornadoes and Flash Flood in South Dakota, July 1, 1998
2 tornado, 1 flash flood, 1 hail, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 1 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
- $50,000
- Crop damage
- None recorded
- Events
- 4
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), 157 km away, was scanning. The volume nearest the first event began at 01:08 UTC.
Event by event
2 tornado, 1 flash flood, 1 hail. Local standard time, as filed.
Flash Flood, Todd
- When
- July 1, 6:15 PM MST to 7:15 PM MST
- Where
- Todd County, Rosebud
- Reported by
- GENERAL PUBLIC
- Coordinates
- 43.193, -100.718 (the zone’s center; the record gives no point)
HEAVY RAINS UP TO THREE INCHES IN ONE HOUR CAUSED MINOR FLOODING IN THE AREA.
Hail, Todd
- When
- July 1, 7:15 PM MST
- Where
- Todd County, Rosebud
- Measured
- 1.75 in hail
- Reported by
- GENERAL PUBLIC
- Coordinates
- 43.230, -100.870
Tornado, Todd
- When
- July 1, 7:26 PM MST
- Where
- Todd County, 4 mi SW of St Francis
- Rating
- F1
- Path length
- 0.1 mi
- Path width
- 0.1 yd
- Property damage
- $50,000
- Reported by
- GENERAL PUBLIC
- Coordinates
- 43.100, -100.970
A SMALL TRAILER WAS TURNED OVER.
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.
- 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.
- 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
- Heat in Texas, July 1 to 31, 1998
- Heat in Louisiana, July 1 to 31, 1998
- Heat in Texas, July 1 to 31, 1998
- Wildfire in Florida, July 1 to 10, 1998
- Heat in Louisiana, July 1 to 31, 1998
- Heat in Illinois, July 1 to 2, 1998
- Flash Flood in New York, July 1, 1998
- Flash Flood in Vermont, July 1, 1998
- Flash Flood in New York, July 1, 1998
- Flash Flood in Vermont, July 1, 1998
- Flash Flood in Vermont, July 1, 1998
- Flash Flood in Vermont, July 1, 1998
More
Every storm in South Dakota in 1998Every state in 1998This day in weather historyThe tornado archive for South Dakota, 1998Warnings in South Dakota, July 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 2026-10-01. Each event’s entry at NCEI: 5658316, 5658317, 5658318, 5658319.