1998: Heavy rains of 2 to 5 inches fell across much of northern and eastern Brown, western and northern Day and all of Marshall County during the afternoon and evening hours. The additional heavy rain only exacerbated the flooding which had been occurring over much of this area for years. Kidder, in northern Marshall County, received up to 5 inches of rain on the 26th after receiving around 2 inches on the 25th. The heavy rain on the 26th flooded the whole town, filling nearly every basement. One resident had basement walls cave in. Areas of Britton were also flooded with water in many basements. The heavy rains added to the already thousands of acres of crop and pastureland under water. One farmer in Day County, near Webster, had documented over one-half million dollars in damages to fences, buildings, land, and income from the prolonged flooding. On his farm, he had 15 buildings under water. This farmer said the highest he had measured the water from flooding was 9 feet, but for this year it had gone up to 21 feet. As a result of this and past heavy rains and also many years of above normal precipitation, about 22 percent of the total farm and pastureland acres in the three counties were flooded or too wet to farm. Some rainfall amounts included, 2.30 inches at Sand Lake NWR, 2.7 inches at Langford, 2.95 inches at Groton, 3.5 inches northwest of Bristol, and 5.10 inches 9N 9W of Britton.

2008: During the evening hours, a compact upper level low pressure system tracking through the Northern Plains interacted with a very moist and unstable airmass over western and central South Dakota resulting in a widespread severe weather outbreak. Three confirmed tornadoes occurred briefly in western Dewey County. Little or no damage was reported and all three tornadoes were rated EF0. In addition to the tornadoes, multiple reports of large hail were received over Corson and Dewey Counties, including some to the size of baseballs near the communities of McLaughlin and Isabel. The large hail broke out many home and vehicle windows and damaged many roofs in Dewey, Corson, and Sully Counties. Significant wind damage occurred over sections of Sully County. There were multiple reports of wind gusts in excess of 70 mph, with the most concentrated swath of damaging winds extending from near Sutton Bay, eastward to the city of Onida, then southeast to the community of Harrold. The storm survey began near Sutton Bay on Lake Oahe, where a wind gust of 92 mph was recorded. The most significant property damage was found further east near the community of Agar where multiple grain bins were either damaged or destroyed. Nine miles west of Agar, a barn was destroyed and a

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