A surface low pressure system, along with an upper level trough of low pressure brought widespread severe weather across north central and northeastern South Dakota.  Severe storms produced large hail up to two inches in diameter, winds up to 70 mph, along with some isolated flash flooding.  These conditions caused damage to homes, vehicles, crops, and trees. Locally heavy rainfall of 2 to 5 inches in Spink County resulted in some flash flooding.

Flash Flood in SPINK, SOUTH DAKOTA
From 18-SEP-13 22:00:00 to 19-SEP-13 02:00:00 (CST-6)
Location: FRANKFORT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

A section of a gravel driveway was washed out requiring some repairs.

Hail in BROWN, SOUTH DAKOTA
From 18-SEP-13 17:00:00 to 18-SEP-13 17:00:00 (CST-6)
Location: HECLA
Magnitude: 2.00 
Reported by: Trained Spotter

Large hail caused some minor crop damage.

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 18-SEP-13 17:13:00 to 18-SEP-13 17:13:00 (MST-7)
Location: FIRESTEEL
Magnitude: 56.00 EG
Reported by: Law Enforcement

Law enforcement estimated 60 to 65 mph wind gusts.

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 18-SEP-13 17:25:00 to 18-SEP-13 17:25:00 (MST-7)
Location: LITTLE EAGLE
Magnitude: 61.00 EG
Reported by: Public

An estimated 70 mph wind gust was reported by the public.

Hail in HAND, SOUTH DAKOTA
From 18-SEP-13 17:37:00 to 18-SEP-13 17:37:00 (CST-6)
Location: POLO
Magnitude: 1.00 
Reported by: Public

Hail in DEWEY, SOUTH DAKOTA
From 18-SEP-13 17:41:00 to 18-SEP-13 17:41:00 (MST-7)
Location: THATCHER
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in CAMPBELL, SOUTH DAKOTA
From 18-SEP-13 19:45:00 to 18-SEP-13 19:45:00 (CST-6)
Location: POLLOCK
Magnitude: 52.00 EG
Reported by: Public

The public estimated wind gusts of 60 mph.

Hail in HAND, SOUTH DAKOTA
From 18-SEP-13 17:50:00 to 18-SEP-13 17:50:00 (CST-6)
Location: POLO
Magnitude: 1.25 
Reported by: Public

Hail in BROWN, SOUTH DAKOTA
From 18-SEP-13 17:50:00 to 18-SEP-13 17:50:00 (CST-6)
Location: BATH
Magnitude: 1.00 
Reported by: Emergency Manager

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 18-SEP-13 18:00:00 to 18-SEP-13 18:00:00 (MST-7)
Location: PROMISE
Magnitude: 52.00 EG
Reported by: Public

An estimated 60 mph wind gust was reported by the public.

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 18-SEP-13 18:00:00 to 18-SEP-13 18:00:00 (MST-7)
Location: LA PLANT
Magnitude: 61.00 EG
Reported by: Public

An estimated 70 mph wind brought down a few branches.

Hail in BROWN, SOUTH DAKOTA
From 18-SEP-13 18:01:00 to 18-SEP-13 18:01:00 (CST-6)
Location: TACOMA PARK
Magnitude: 1.75 
Reported by: Emergency Manager

Golf ball size hail caused some damage to vehicles.

Hail in SPINK, SOUTH DAKOTA
From 18-SEP-13 18:40:00 to 18-SEP-13 18:40:00 (CST-6)
Location: REDFIELD
Magnitude: 1.00 
Reported by: Law Enforcement

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 18-SEP-13 18:15:00 to 18-SEP-13 18:15:00 (MST-7)
Location: MAHTO
Magnitude: 54.00 MG
Reported by: Mesonet

Hail in BROWN, SOUTH DAKOTA
From 18-SEP-13 18:45:00 to 18-SEP-13 18:45:00 (CST-6)
Location: GROTON MUNI ARPT
Magnitude: 1.75 
Reported by: Emergency Manager

Hail in SPINK, SOUTH DAKOTA
From 18-SEP-13 19:15:00 to 18-SEP-13 19:15:00 (CST-6)
Location: REDFIELD ARPT
Magnitude: 1.75 
Reported by: Public

Thunderstorm Wind in WALWORTH, SOUTH DAKOTA
From 18-SEP-13 19:24:00 to 18-SEP-13 19:24:00 (CST-6)
Location: MOBRIDGE
Magnitude: 52.00 EG
Reported by: Law Enforcement

Law enforcement estimated 60 mph winds in Mobridge.

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 18-SEP-13 19:45:00 to 18-SEP-13 19:45:00 (CST-6)
Location: BOWDLE
Magnitude: 50.00 MG
Reported by: Mesonet

Thunderstorm Wind in CAMPBELL, SOUTH DAKOTA
From 18-SEP-13 20:09:00 to 18-SEP-13 20:09:00 (CST-6)
Location: HERREID MUNI ARPT
Magnitude: 52.00 MG
Reported by: Mesonet

Hail in SPINK, SOUTH DAKOTA
From 18-SEP-13 20:15:00 to 18-SEP-13 20:15:00 (CST-6)
Location: CRANDON
Magnitude: 1.75 
Reported by: Public

Hail in SPINK, SOUTH DAKOTA
From 18-SEP-13 20:45:00 to 18-SEP-13 20:45:00 (CST-6)
Location: TULARE
Magnitude: 1.50 
Reported by: Public

Hail in SPINK, SOUTH DAKOTA
From 18-SEP-13 20:45:00 to 18-SEP-13 20:45:00 (CST-6)
Location: FRANKFORT
Magnitude: 1.00 
Reported by: Public

Hail in SPINK, SOUTH DAKOTA
From 18-SEP-13 20:45:00 to 18-SEP-13 20:45:00 (CST-6)
Location: REDFIELD ARPT
Magnitude: 1.75 
Reported by: Law Enforcement

The large hail cracked the windshield of a police cruiser.

Hail in SPINK, SOUTH DAKOTA
From 18-SEP-13 20:50:00 to 18-SEP-13 20:50:00 (CST-6)
Location: FRANKFORT
Magnitude: 1.00 
Reported by: Public

Hail in BROWN, SOUTH DAKOTA
From 18-SEP-13 20:51:00 to 18-SEP-13 20:51:00 (CST-6)
Location: RICHMOND
Magnitude: 1.00 
Reported by: Public

Hail in CLARK, SOUTH DAKOTA
From 18-SEP-13 20:55:00 to 18-SEP-13 20:55:00 (CST-6)
Location: RAYMOND
Magnitude: 1.25 
Reported by: Public

Half dollar size hail caused some minor crop damage.

Hail in BROWN, SOUTH DAKOTA
From 18-SEP-13 21:00:00 to 18-SEP-13 21:00:00 (CST-6)
Location: ABERDEEN
Magnitude: 1.50 
Reported by: NWS Employee

Hail in BROWN, SOUTH DAKOTA
From 18-SEP-13 21:15:00 to 18-SEP-13 21:15:00 (CST-6)
Location: PLANA
Magnitude: 1.00 
Reported by: Public

Hail in HAMLIN, SOUTH DAKOTA
From 18-SEP-13 21:55:00 to 18-SEP-13 21:55:00 (CST-6)
Location: HAZEL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CLARK, SOUTH DAKOTA
From 18-SEP-13 22:30:00 to 18-SEP-13 22:30:00 (CST-6)
Location: CLARK
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in CAMPBELL, SOUTH DAKOTA
From 18-SEP-13 19:46:00 to 18-SEP-13 19:46:00 (CST-6)
Location: POLLOCK
Magnitude: 52.00 EG
Reported by: Fire Department/Rescue

Sixty mph wind gusts were reported by the fire department.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 18-SEP-13 20:48:00 to 18-SEP-13 20:48:00 (CST-6)
Location: RICHMOND
Magnitude: 52.00 EG
Reported by: NWS Employee

Sixty mph wind gusts were reported.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 18-SEP-13 20:49:00 to 18-SEP-13 20:49:00 (CST-6)
Location: RICHMOND
Magnitude: 52.00 EG
Reported by: NWS Employee

Sixty mph winds were reported.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 18-SEP-13 21:04:00 to 18-SEP-13 21:04:00 (CST-6)
Location: WESTPORT
Magnitude: 56.00 EG
Reported by: Public

An estimated 65 mph wind gust brought some branches down.

Hail in BROWN, SOUTH DAKOTA
From 18-SEP-13 21:03:00 to 18-SEP-13 21:03:00 (CST-6)
Location: ABERDEEN
Magnitude: 1.75 
Reported by: NWS Employee

Golf ball size hail caused damage to many vehicles in north Aberdeen along with a few structures receiving some siding and roof damage.

Thunderstorm Wind in STANLEY, SOUTH DAKOTA
From 18-SEP-13 17:20:00 to 18-SEP-13 17:20:00 (MST-7)
Location: HAYES HAMILTON ARPT
Magnitude: 61.00 EG
Reported by: Trained Spotter

A trained spotter estimated 65 to 70 mph wind gusts.