A line of thunderstorms developed over the Black Hills and tracked east across western South Dakota, producing large hail and strong wind gusts across portions of the area. Heavy rain produced flooding in the Rapid City area.

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 19:30:00 to 04-JUL-19 19:30:00 (MST-7)
Location: ROCHFORD
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were snapped and uprooted.

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 19:30:00 to 04-JUL-19 19:30:00 (MST-7)
Location: ROCHFORD
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wind gusts were estimated at 60 mph.

Hail in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 20:05:00 to 04-JUL-19 20:05:00 (MST-7)
Location: RAPID CITY
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 20:06:00 to 04-JUL-19 20:06:00 (MST-7)
Location: (RAP)RAPID CITY ARPT
Magnitude: 52.00 MG
Crop damage: 0.00K
Reported by: ASOS

Hail in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 20:00:00 to 04-JUL-19 20:00:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.25 
Crop damage: 0.00K
Reported by: NWS Employee

Hail in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 20:05:00 to 04-JUL-19 20:05:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 21:05:00 to 04-JUL-19 21:05:00 (MST-7)
Location: WALL
Magnitude: 61.00 MG
Crop damage: 0.00K
Reported by: RAWS

Thunderstorm Wind in JACKSON, SOUTH DAKOTA
From 04-JUL-19 21:38:00 to 04-JUL-19 21:38:00 (MST-7)
Location: CACTUS FLATS
Magnitude: 69.00 MG
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 21:14:00 to 04-JUL-19 21:14:00 (MST-7)
Location: WALL
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 60 mph.

Thunderstorm Wind in HAAKON, SOUTH DAKOTA
From 04-JUL-19 21:45:00 to 04-JUL-19 21:45:00 (MST-7)
Location: (PHP)PHILIP ARPT
Magnitude: 69.00 MG
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in HAAKON, SOUTH DAKOTA
From 04-JUL-19 22:24:00 to 04-JUL-19 22:24:00 (MST-7)
Location: MIDLAND
Magnitude: 70.00 MG
Crop damage: 0.00K
Reported by: Mesonet

Trees were damaged and power lines were downed by the wind.

Tornado in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 19:21:00 to 04-JUL-19 19:22:00 (MST-7)
Location: ROCHFORD
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A short-lived tornado damaged trees southwest of Black Fox Campground.

Tornado in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 19:29:00 to 04-JUL-19 19:31:00 (MST-7)
Location: DEERFIELD
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A short-lived tornado damaged trees along the eastern edge of Slate Creek Prairie.

Flash Flood in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 20:00:00 to 04-JUL-19 23:30:00 (MST-7)
Location: RAPID CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

In Rapid City, multiple vehicles were stalled on area roads, with several water rescues performed. Portions of St Joseph Street near the South Dakota School of Mines and Technology was underwater and water was running curb to curb on Omaha Street, Mount Rushmore Road, West Boulevard, and Main Street. Additional flooding was reported in north Rapid City near the Rushmore Mall.

Tornado in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 19:17:00 to 04-JUL-19 19:20:00 (MST-7)
Location: DEERFIELD
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A short-lived tornado damaged trees, a water tank, and a tent.

Flood in PENNINGTON, SOUTH DAKOTA
From 04-JUL-19 23:30:00 to 05-JUL-19 10:00:00 (MST-7)
Location: RAPID CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from heavy rainfall caused minor flooding along Rapid Creek in Rapid City and Rapid Valley.