Very strong northwest winds were persistent across southeast South Dakota from the afternoon of October 17th through most of October 18th. The strongest winds were mostly west of the James River.

High Wind in BRULE, SOUTH DAKOTA
From 17-OCT-12 14:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 58.00 MG
Crop damage: 0.00K
Reported by: ASOS

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts over 60 mph. A peak gust of 67 mph was recorded at Chamberlain.

High Wind in CHARLES MIX, SOUTH DAKOTA
From 17-OCT-12 14:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 57.00 MG
Crop damage: 0.00K
Reported by: Mesonet

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts over 60 mph. A peak gust of 66 mph was recorded at Lake Andes.

High Wind in JERAULD, SOUTH DAKOTA
From 17-OCT-12 15:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 51.00 MG
Crop damage: 0.00K
Reported by: AWOS

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts near 60 mph. A peak gust of 59 mph was recorded at Wessington Springs.

High Wind in AURORA, SOUTH DAKOTA
From 17-OCT-12 15:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: COOP Observer

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts near 60 mph. A peak gust of 60 mph was estimated at White Lake.

High Wind in DAVISON, SOUTH DAKOTA
From 17-OCT-12 15:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 53.00 MG
Crop damage: 0.00K
Reported by: ASOS

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts near 60 mph. A peak gust of 61 mph was recorded at Mitchell.

High Wind in HANSON, SOUTH DAKOTA
From 17-OCT-12 15:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts near 60 mph. A peak gust of 60 mph was estimated near Alexandria.

High Wind in DOUGLAS, SOUTH DAKOTA
From 17-OCT-12 15:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts near 60 mph. A peak gust of 60 mph was estimated near Armour.

High Wind in HUTCHINSON, SOUTH DAKOTA
From 17-OCT-12 15:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts near 60 mph. A peak gust of 60 mph was estimated at Parkston.

High Wind in BON HOMME, SOUTH DAKOTA
From 17-OCT-12 15:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts near 60 mph. A peak gust of 60 mph was estimated at Tyndall.

High Wind in YANKTON, SOUTH DAKOTA
From 17-OCT-12 15:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Broadcast Media

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts near 60 mph. A peak gust of 60 mph was estimated at Yankton.

High Wind in GREGORY, SOUTH DAKOTA
From 17-OCT-12 13:00:00 to 18-OCT-12 19:00:00 (CST-6)
Magnitude: 60.00 MG
Crop damage: 0.00K
Reported by: AWOS

Persistent very strong northwest winds were frequently over 40 mph sustained, with gusts over 60 mph. A peak gust of 69 mph was recorded at Gregory.