A line of severe storms storms developed along a cold front in central South Dakota sweeping east across the region during the afternoon and evening. Large hail over 2 inches along with winds gusting to 80 mph occurred with these storms.  A brief weak tornado also touched down just northeast of Glenham. The outflow from the weakening line of storms resulted in high winds and a dust stormfor locations along and east of the James Valley.  See the dust storm entry for June 1st.

Hail in WALWORTH, SOUTH DAKOTA
From 01-JUN-18 19:40:00 to 01-JUN-18 19:40:00 (CST-6)
Location: JAVA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tornado in WALWORTH, SOUTH DAKOTA
From 01-JUN-18 18:36:00 to 01-JUN-18 18:37:00 (CST-6)
Location: GLENHAM
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tornado touched downed briefly just northeast of Glenham. No damage was reported.

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 01-JUN-18 16:40:00 to 01-JUN-18 16:40:00 (MST-7)
Location: MAHTO
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 01-JUN-18 18:44:00 to 01-JUN-18 18:44:00 (CST-6)
Location: HIGHMORE ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HUGHES, SOUTH DAKOTA
From 01-JUN-18 18:59:00 to 01-JUN-18 18:59:00 (CST-6)
Location: (PIR)PIERRE ARPT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 01-JUN-18 19:34:00 to 01-JUN-18 19:34:00 (CST-6)
Location: MELLETTE
Magnitude: 64.00 MG
Reported by: Mesonet

Thunderstorm Wind in FAULK, SOUTH DAKOTA
From 01-JUN-18 19:45:00 to 01-JUN-18 19:45:00 (CST-6)
Location: CHELSEA
Magnitude: 70.00 EG
Reported by: Trained Spotter

An estimated eighty mph wind from a thunderstorm brought down a tree. Before the rain began, blowing dust occurred with the visibility down to an eighth of a mile.

Hail in DEWEY, SOUTH DAKOTA
From 01-JUN-18 15:10:00 to 01-JUN-18 15:10:00 (MST-7)
Location: TIMBER LAKE ARPT
Magnitude: 2.25 
Reported by: Public

Hail in DEWEY, SOUTH DAKOTA
From 01-JUN-18 15:20:00 to 01-JUN-18 15:20:00 (MST-7)
Location: GLENCROSS
Magnitude: 1.75 
Reported by: Law Enforcement

Hail in CORSON, SOUTH DAKOTA
From 01-JUN-18 15:52:00 to 01-JUN-18 15:52:00 (MST-7)
Location: BULLHEAD
Magnitude: 1.25 
Reported by: Public

Hail in CORSON, SOUTH DAKOTA
From 01-JUN-18 16:02:00 to 01-JUN-18 16:02:00 (MST-7)
Location: TRAIL CITY
Magnitude: 1.50 
Reported by: Public

Hail in CORSON, SOUTH DAKOTA
From 01-JUN-18 16:30:00 to 01-JUN-18 16:30:00 (MST-7)
Location: TRAIL CITY
Magnitude: 1.50 
Reported by: Public

Hail in CORSON, SOUTH DAKOTA
From 01-JUN-18 16:35:00 to 01-JUN-18 16:35:00 (MST-7)
Location: LITTLE EAGLE
Magnitude: 1.00 
Reported by: Public

Hail in CORSON, SOUTH DAKOTA
From 01-JUN-18 16:55:00 to 01-JUN-18 16:55:00 (MST-7)
Location: WAKPALA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in WALWORTH, SOUTH DAKOTA
From 01-JUN-18 18:30:00 to 01-JUN-18 18:30:00 (CST-6)
Location: GLENHAM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public