| March 2019 | Flood | Woonsocket | 2 killed | Snow melt and heavy rainfall (measured 2.47 inches at Forestburg and 1.60 inches at Huron) resulted in extensive flooding of agricultural land and numerous township and county roads. The James River near Forestburg (gage site FORS2) reached a crest of 4.18 feet above flood stage on March 25. The driver and passenger of a garbage truck were (directly) killed when their truck went off the road and into the flood waters at the base of the bridge near the gage site. The river remained at moderate flood stage at the end of the month. |
| April 2011 | Flood | Woonsocket | $1,000,000 | Major flooding of the James River, as well as flooding of small streams and lakes in the county, continued through April. Much farmland remained flooded, both near to and away from the James River. The James River was 5.8 feet above flood stage near Forestburg on April 1st, and fell very slowly during the month. A large area of land and numerous roads were flooded. Water was running over other roads, from flooded streams, creeks, and fields as well as from the James River. Many roads were heavily damaged. Some homes and businesses were also flooded, with the flooding of these places slowly alleviating through the month. High water and groundwater levels from record precipitation in the year 2010, a main reason the flooding onset was so fast in March, was also a main reason that the flooding subsided so slowly during April. |
| June 2003 | Tornado (F3) | Woonsocket | $500,000 | A tornado, crossing into Sanborn County from Jerauld County, destroyed or severely damaged several buildings on two farms. The tornado lifted the roof off a house. Another farmhouse had windows blown out, and shingles and aluminum siding torn off. Destroyed buildings included a barn, garage, outbuildings, and other small structures. Vehicles inside the destroyed garage were damaged. The tornado also caused tree, power line, and crop damage. |
| May 2007 | Flood | Woonsocket | $200,000 | Heavy rainfall caused flooding of low areas including fields, homes, businesses, schools, roads, streams, and bridges. The flooding was a longer term event than flash flooding, which had also resulted. Long term major flooding of the James River also resulted, with the river peaking at 7.0 feet above flood stage near Forestburg on May 9th. Some parks and other recreation areas were affected. A few roads and bridges were washed out by the high water. The flooding delayed planting of crops in some areas. |
| June 1999 | Tornado (F1) | Woonsocket | $200,000 | no account filed |
| June 2010 | Flood | Woonsocket | $100,000 | Persistent heavy rain caused lasting flooding of numerous fields and other lowlands, and of many roads. Several homes were flooded and many of the flooded roads were closed. |
| July 1996 | Hail | Woonsocket | $50,000 | no account filed |
| August 2011 | Thunderstorm Wind | Woonsocket | $20,000 | Thunderstorm winds blew down a scoreboard at a football field, caused tree damage at a cemetery and elsewhere on the northwest side of Woonsocket, and blew down power lines, causing a power outage. |
| July 2022 | Thunderstorm Wind | Woonsocket | $15,000 | Seven power poles along South Dakota Highway 34 were damaged by thunderstorm winds, six of those snapped. |
| August 2019 | Flood | Woonsocket | $10,000 | A continuation of flooding from July, the James River near Forestburg (gage site FORS2) crested 3.80 feet above flood stage on August 7. Many rural roads near the river were inundated, with continued flooding of significant amounts of agricultural land. Minor flooding continued at the end of the month. |
| September 2019 | Flood | Woonsocket | $10,000 | A continuation of minor flooding from August, the James River near Forestburg (gage site FORS2) responded rapidly mid-month to 2 to 4 inches of rainfall from September 10-12 near and upstream of Sanborn County to crest 3.87 feet above flood stage on September 16. Many rural roads near the river remained inundated, with continued flooding of significant amounts of agricultural land. Minor flooding continued at the end of the month. |
| June 2006 | Thunderstorm Wind | Woonsocket | $10,000 | Thunderstorm winds caused tree damage, including one tree that fell onto and heavily damaged a car. |
| August 2000 | Thunderstorm Wind | Woonsocket | $10,000 | Thunderstorm winds caused tree and power line damage, with 4 to 5 inch diameter tree limbs blown down. |
| July 1996 | Thunderstorm Wind | Woonsocket | $10,000 | no account filed |
| October 2019 | Flood | Woonsocket | $5,000 | A continuation of minor flooding from September, the James River near Forestburg (gage site FORS2) began the month at the peak of 1.97 feet above flood stage on October 1. |A few county and township roads near the gage and significant amounts of agricultural land remained flooded, and this minor flooding continued at the end of the month. Property damage costs are rough estimates. |
| May 2010 | Thunderstorm Wind | Woonsocket | $5,000 | Thunderstorm winds blew down power lines and tree branches. |
| June 2001 | Thunderstorm Wind | Woonsocket | $5,000 | Thunderstorm winds blew down trees, limbs, and branches. A large tree destroyed a storage building and damaged a nearby garage when it fell. |
| August 1993 | Hail | Woonsocket | $5,000 | Dime- to half-dollar-size hail fell for about 30 minutes, destroying 28 acres of watermelon. Two to four inches of rain occurred with the storm northeast of Woonsocket. |
| July 2025 | Thunderstorm Wind | Woonsocket | - | Numerous tree and limb damage was reported across Woonsocket. An empty grain bin had the sides blown in and an empty grain truck was blown over. Significant damage was done to several businesses in town with severe wall and/or roof damage to numerous buildings. A survey of direction and extent of damage from drone footage revealed this was the result of severe downburst winds. |
| July 2025 | Thunderstorm Wind | Woonsocket | - | Thunderstorm winds were measured by South Dakota Mesonet station WSMS2 4 miles north-northwest of Woonsocket. |
| July 2025 | Thunderstorm Wind | Woonsocket | - | Numerous instances of significant tree damage were reported across the city of Woonsocket. |
| August 2025 | Flood | Woonsocket | - | The James River near Forestburg rose above flood stage on the evening of August 25th, cresting around 0.27 feet above flood stage (12.27 ft) on August 26th. The river then fell below flood stage on the evening of August 29th. |
| June 2024 | Flood | Woonsocket | - | The James River near Forestburg rose above flood stage the evening of June 25th, cresting around 0.07 feet above flood stage (12.07 feet) on June 25th. The river then fell below flood stage on the evening of June 26th. For a more comprehensive description of flood damage, please see other entries for Sanborn County. |
| May 2023 | Flood | Woonsocket | - | Flooding continued from April along the James River near Forestburg, SD with very slowly falling levels through the month. Flood levels were in the Moderate category for 5 days and Minor stage for 31 days. Flooding continued into June. |
| June 2023 | Flood | Woonsocket | - | Flooding continued from May along the James River near Forestburg, SD with very slowly falling levels through the month. The peak river level was 0.79 feet above flood stage (12.79 ft) occurring early in the day on the 1st, before falling below flood stage early on the 14th. |
| April 2023 | Flood | Woonsocket | - | The James River near Forestburg, SD rose above flood stage on the morning of April 15th before cresting around 3.35 feet above flood stage (15.35 feet) on April 26th, which is in the Moderate category. The river was above Minor flood stage at this location for 16 days and above Moderate stage for 10 days. Flooding continued into May. |
| July 2022 | Hail | Woonsocket | - | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| May 2022 | Flood | Woonsocket | - | As water from early spring rains and late winter snowmelt in North Dakota and far northern South Dakota routed downstream, the James River near Forestburg (gage site FORS2) climbed into minor flood stage on May 26, and reached 1.01 feet above flood stage at the end of the month. Significant amounts of agricultural land were inundated. Minor flooding continued at the end of the month. |
| June 2022 | Flood | Woonsocket | - | Minor flooding was ongoing at the start of June 2022 on the James River near Forestburg (gage site FORS2), with a crest at 1.99 feet above flood stage on June 13. A significant amount of rural land was flooded. The river remained at minor flood stage at the end of the month. |
| July 2022 | Flood | Woonsocket | - | Minor flooding was ongoing at the start of July 2022 on the James River near Forestburg (gage site FORS2). Five to seven inches of rainfall the first seven days of July in a small area at and north of Huron resulted in a crest at 1.21 feet above flood stage on July 21. A significant amount of rural land was flooded. The river remained at minor flood stage at the end of the month. |
| July 2022 | Thunderstorm Wind | Woonsocket | - | Significant damage to tree limbs occurred due to thunderstorm wind gusts. |
| August 2022 | Thunderstorm Wind | Woonsocket | - | Multiple branches, some up to 2-feet in diameter, were downed along with several power lines. |
| January 2020 | Flood | Woonsocket | - | A continuation of flooding from December, the James River near Forestburg (gage site FORS2) spent the month in minor flood, with a brief eclipse of moderate flooding at 2.01 feet above flood stage on January 2. A secondary intramonth crest of 1.76 feet above flood stage occurred on January 22. A few county and township roads near the river remained under water. Minor flooding continued at the end of the month. |
| February 2020 | Flood | Woonsocket | - | A continuation of flooding from January, the James River near Forestburg (gage site FORS2) started the month at 1.14 feet above flood stage. A few county and township roads near the gage remained in flood until the river fell below flood stage on February 20. |
| June 2020 | Flood | Woonsocket | - | A continuation of flooding from May, the James River near Forestburg (gage site FORS2) spent much of the month in minor flood stage, before climbing to moderate flood levels at the end of the month with a crest at 2.55 feet above flood stage on June 29 and June 30. Numerous county and township roads near the gage were inundated. The river remained at moderate flood stage at the end of the month. |
| March 2020 | Flood | Woonsocket | - | The James River near Forestburg (gage site FORS2) returned quickly above flood stage at the start of the month, and crested 3.61 feet above flood stage on March 12, in moderate flood stage. Numerous county and township roads near the gage were inundated. The river remained at moderate flood stage at the end of the month. |
| April 2020 | Flood | Woonsocket | - | A continuation of flooding from March, the James River near Forestburg (gage site FORS2) spent the entire month at moderate flood stage. An early month crest of 2.92 feet above flood stage occurred on April 2. Numerous county and township roads near the gage were inundated. The river remained at moderate flood stage at the end of the month. |
| July 2020 | Flood | Woonsocket | - | A continuation of flooding from June, the James River near Forestburg (gage site FORS2) started the month at moderate flood 2.37 feet above flood stage. After falling river levels early in the month, 1.36 inches of rainfall near Forestburg caused a secondary peak 1.28 feet above flood stage on July 14. Several county and township roads near the river remained under water at the start of the month, with inundation of agricultural land the primary impact thereafter. |
| June 2019 | Flood | Woonsocket | - | A continuation of flooding from May, the James River near Forestburg (gage site FORS2) crested 3.71 feet above flood stage on June 1. Many rural roads near the river were inundated, with continued flooding of significant amounts of agricultural land. Minor flooding continued at the end of the month. |
| November 2019 | Flood | Woonsocket | - | A continuation of flooding from October, the James River near Forestburg (gage site FORS2) hovered much of the month in minor flood, then rose sharply late month and crested 2.40 feet above flood stage on November 29. A few county and township roads near the gage and significant amounts of agricultural land remained flooded, and minor flooding continued at the end of the month. |
| July 2019 | Flood | Woonsocket | - | A continuation of flooding from June, the James River near Forestburg (gage site FORS2) crested 3.86 feet above flood stage on July 11. Many rural roads near the river were inundated, with continued flooding of significant amounts of agricultural land. Minor flooding continued at the end of the month. |
| July 2019 | Hail | Woonsocket | - | Intermittent hail fall near 398th Avenue and 224th Street. |
| May 2019 | Flood | Woonsocket | - | This is a continuation of flooding from April. The James River near Forestburg (gage site FORS2) crested 4.67 feet above flood stage on May 1, inundating numerous county and township roads near the gage site. After a short period at major flood stage, the river remained in moderate flood levels through the end of the month. |
| December 2019 | Flood | Woonsocket | - | A continuation of flooding from November, the James River near Forestburg (gage site FORS2) spent much of the month in moderate flood, with a brief period from December 10-13 in major flood. A crest of 4.88 feet above flood stage occurred on December 12. Most of the flood plain was inundated, with numerous county and township roads near the river under water for at least a half mile. Minor flooding continued at the end of the month. |
| April 2018 | Flood | Woonsocket | - | Snow melt and runoff from periods of heavier rainfall produced minor flooding which impacted lowland agricultural areas. River levels reached 0.7 feet above flood stage on the James River near Forestburg (gage site FORS2) on April 24. |
| June 2017 | Thunderstorm Wind | Woonsocket | - | Older trees downed, as well as healthy four inch diameter branches. |
| June 2017 | Thunderstorm Wind | Woonsocket | - | Downed tree. |
| July 2017 | Thunderstorm Wind | Woonsocket | - | A few tree limbs downed. |
| August 2016 | Thunderstorm Wind | Woonsocket | - | Thunderstorm winds caused tree damage, including several branches blown down. |
| September 2012 | Hail | Woonsocket | - | Hail was accompanied by damaging wind gusts. |
| September 2012 | Thunderstorm Wind | Woonsocket | - | Thunderstorm winds blew down several branches and small limbs. The winds were accompanied by nickel size hail. |
| March 2011 | Flood | Woonsocket | - | Melting of a heavy winter snow cover caused major flooding of the James River, as well as flooding of small streams and lakes in the county. Farmland was also flooded, both near to and away from the James River. The James River crested at 8.26 feet above flood stage near Forestburg on March 25th. Most notable among other waterways was the flooding of Sand creek, which flows into the James River near Forestburg, and also affected a large area of land. Numerous roads were closed by the flooding, and water was running over other roads, from flooded streams, creeks, and fields as well as from the James River and Sand Creek. Some roads were heavily damaged, but the amount of damage could not be determined before repairs began. Some homes and businesses were also flooded. The flooding onset was rapid for a snow melt flood due to high water and groundwater levels from record precipitation in the year 2010. |
| June 2010 | Flash Flood | Woonsocket | - | Heavy rain caused flash flooding of fields, roads, and at least one basement in a rural area. |
| July 2008 | Thunderstorm Wind | Woonsocket | - | Thunderstorm winds caused tree damage, including large limbs blown down. |
| June 2007 | Flood | Woonsocket | - | Long term minor to moderate flooding of the James River continued at the start of June. Additional moderate to heavy rainfall over the basin kept the river above flood stage through the month. The flooding was not nearly as great as during the previous month. A crest of 2.4 feet above flood stage was recorded on the river near Forestburg on June 21st. While lowland flooding continued along the river, no additional damage was reported. |
| March 2007 | Flood | Woonsocket | - | Warm temperatures caused a rapid snowmelt which caused the James River to rise above flood stage for several days. The flooding was minor to locally moderate and no significant damage was reported. The river crested at 2.0 feet above flood stage near Forestburg on March 17th. |
| April 2007 | Hail | Woonsocket | - | Hail up to baseball size damaged vehicles, windows, and roofs. The amount of damage was not known. |
| September 2006 | Tornado (F0) | Woonsocket | - | A brief tornado caused no reported damage. |
| September 2005 | Thunderstorm Wind | Woonsocket | - | Thunderstorm winds caused tree damage, including several branches blown down. |
| July 2004 | Thunderstorm Wind | Woonsocket | - | Thunderstorm winds caused tree damage, including numerous 4 to 5 inch diameter branches blown down. |