Power Outage in Rapid City, SD

A power pole was downed by the wind.

A 24 foot horse trailer was flipped over and a large livestock trailer was pushed into a power pole by the wind.

Several power poles were downed near the Red Rocks neighborhood by the strong wind gusts.

Several power poles were downed near the Red Rocks neighborhood by the strong wind gusts.

A tornado touched down about three miles northwest of Hermosa and tracked northeastward for about 12 minutes, dissipating about six miles northeast of Hermosa. Numerous pine trees were snapped along Murphy Road where the tornado initially formed. Several power poles were snapped where it crossed Highway 79. Several homes were badly damaged and many outbuildings were destroyed as the tornado passed through the Spring Creek Acres subdivision.

Several power poles werew snapped and a quonset hut was blown over.

A large electric transmission tower was crumpled, seven wooden power poles were snapped, and trees were snapped.

Numerous trees and power lines were blown down in Rapid City.

Several power poles were blown down by thunderstorm winds.

A long-lived supercell thunderstorm took a similar track to a storm the previous day and caused considerable damage along its track from southern Butte County to southern Meade County, northeastern Pennington County, and Haakon County. The Belle Fourche and Philip areas saw the most significant damage again. Hail near softball size and wind gusts over 80 mph damaged property, trees, crops, and caused widespread power outages.

A long-lived supercell thunderstorm tracked east-southeast from southeastern Montana and far northeastern Wyoming through portions of Butte, southern Meade, northeastern Pennington, Haakon, and northern Jackson Counties. The storm produced large hail and wind gusts over 80 mph along its path. Damage was reported from the Belle Fourche to Philip areas. Property damage, downed trees and power lines were reported, including over 100 power poles downed in northeastern Pennington County. Power outages were widespread and lasted several days in these areas.

A long duration derecho tracked northeastward from Wyoming to the Black Hills area and across northwestern South Dakota. Wind gusts as high as 90 mph were reported across the area. Some trees and power poles were downed, along with mostly minor property damage.

A derecho tracked northeastward from Nebraska across parts of southwestern into central South Dakota. Wind gusts as high as 90 mph were reported across the area. Some trees and power poles were downed, along with mostly minor property damage.

A powerful storm system slowly moved from the Four Corners region northeastward through the Plains, leading to a prolonged period of precipitation across western South Dakota May 20-22. This three day period was among the coldest, wettest, and snowiest on record for late May, with several temperature and precipitation records set. Runoff from the rain and melting snow led to flooding of creeks, rivers, low-lying areas, and some roads across western and south central South Dakota.

A powerful supercell thunderstorm tracked east from Wyoming across southern Butte County, northern Meade County, and into central South Dakota. Very large hail larger than baseballs, along with wind gusts to 90 mph, caused damage across the area.

A line of severe thunderstorms developed over far southwestern South Dakota and tracked northeastward across much of southwestern into central South Dakota. The storms produced wind gusts of 60 to 80 mph and small hail. The winds caused minor damage, mostly to trees and power poles.

A line of severe thunderstorms developed over central Meade County and moved eastward across eastern Meade, northeastern Pennington, northern Haakon, and southern Ziebach Counties. The storm produced very large hail in some areas, along with strong wind gusts, which caused extensive damage. A small tornado snapped power poles and large pine trees south of White Owl.

A severe thunderstorm developed over the eastern slopes of the central Black Hills and tracked northeastward onto the plains. The storm produced large hail and eventually formed into a line of storms with strong wind gusts as it moved across the plains. A tornado developed as the storm moved north of Hermosa; downing trees and power poles, damaging some homes, and destroying a couple of outbuildings.

A long-lived complex of severe thunderstorms tracked from southeastern Montana across northwestern South Dakota. The strongest storms produced hail to six inches in diameter, wind gusts over 80 mph, and a tornado in southern Meade County. Significant structure, property, and crop damage was reported in Butte and Meade Counties. Livestock were killed by the large hail in the Nisland area, with one rancher losing 35 sheep. The storms continued into south central South Dakota, but no reports were received due to a widespread power outage.

A line of severe thunderstorms moved from northeastern Wyoming across the northern Black Hills and west central South Dakota plains. Hail larger than the size of baseballs and wind gusts to 70 mph caused significant damage to buildings and automobiles and power outages across much of Rapid City.

A mesoscale convective system developed across southwest North Dakota and moved southeast across parts of northwest and west central South Dakota. The system produced widespread large hail and damaging wind gusts across Perkins, Ziebach, Haakon, and far eastern Pennington Counties. The most substantial damage was reported around Bison, where wind gusts over 80 mph damaged buildings and knocked down many power lines.

A line of severe thunderstorms developed across Crook County, Wyoming and moved eastward across Butte, Meade, northeast Pennington and Haakon counties, producing wind gusts to 70 mph and penny sized hail. Roofs were damaged and power lines were downed at Union Center as the storms passed through.

A supercell thunderstorm developed over southeastern Lawrence County and moved into southwestern Meade County, dropping dime to golf ball sized hail. As the storm moved into the Rapid City area, the storm became outflow dominated and moved through Rapid City with 60 to 70 mph winds. The storm continued to move quickly east-southeast across southwestern and south central South Dakota producing 60 to 80 mph winds and hail to the size of golf balls. The strong winds downed many trees and power lines from Rapid City to the Winner area.

Strong southerly flow at the surface, combined with a line of thunderstorms moving northward across southwestern South Dakota, produced wind gusts of 60 to 70 mph during the late afternoon and early evening hours. In Hot Springs, wind gusts around 65 mph brought down trees and power lines in town, causing damage to some homes and automobiles. Small trees were also reported down in Hermosa.