Headline:
Severe Thunderstorm Warning issued June 29 at 5:24AM CDT until June 29 at 6:15AM CDT by NWS Aberdeen SD
Event:
Severe Thunderstorm Warning
Urgency:
Immediate
Effective:
June 29, 2026 - 3:24am
Expires:
June 29, 2026 - 4:15am
Description:
At 524 AM CDT, severe thunderstorms were located along a line
extending from 10 miles southwest of Rousseau to near Fate Dam to 9
miles northwest of Ideal, moving northeast at 70 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Public. At 513 AM CDT, 70 mph winds were reported 9 miles
north-northwest of Vivian.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Presho, Kennebec, Reliance, Vivian, Medicine Butte, Fate Dam, 5 Mile
Corner, Earling Hill, Lyman, Byre Lake, and southwestern Lower Brule
Reservation.
Instruction:
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Lyman County. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
Area Description:
Jones, SD; Lyman, SD
Forcast Office:
NWS Aberdeen SD
Sender: