Clay storm history

Rainfall amounts across Clay County from June 20-22 ranged from around a third of an inch across southern areas to 1 to 2 inches across northern areas. Farther north and upstream, 6 to 10 inches of rain fell across portions of southeast South Dakota, with locally higher amounts i…

Northwest winds were sustained between 40 and 44 mph at times, with gusts as high as 64 mph at Vermillion and 60 mph at a South Dakota Mesonet site 7 miles west-southwest of Beresford.

Wind chills reached as low as -31 degrees at a South Dakota Mesonet site 7 miles west-southwest of Beresford and -29 degrees at Vermillion.

Snowfall totaled 4.0 inches at Vermillion.

Synoptic northwest winds were sustained from 40 to 42 mph with a peak gust of 61 mph at an Automated Weather Observing System site at Vermillion.

Snowfall totaled 4.5 inches 1.4 miles southeast of Vermillion.

A long-duration snowfall totaled 6.7 inches at Vermillion. During a brief break in snowfall during the evening of November 28, a period of light freezing rain and freezing drizzle produced a glaze of icing.

Sustained winds periodically reached around 40 mph at a South Dakota Road Weather Information System site 4 miles east of Irene with a peak gust of 59 mph.

Dangerous heat index values peaked as high as 109 degrees at South Dakota Mesonet site BFMS2 7 miles west-southwest of Beresford and at Wakonda on August 16.

Dangerous heat index values peaked as high as 110 degrees 2 miles east-northeast of Vermillion and 106 degrees at Wakonda.

Thunderstorm wind gusts were measured by South Dakota Mesonet station BFMS2 Beresford 7 WSW.

A 61 mph thunderstorm wind gust was measured at Harold Davidson Field Airport (KVMR).

Thunderstorm wind gusts were measured by a personal weather station.

An extended period of thunderstorm wind gusts was measured by South Dakota Mesonet station BFMS2 Beresford 7 WSW.

Dangerous heat index readings reached an afternoon peak as high as 118 degrees at Wakonda, 117 degrees at Vermillion, and 111 degrees at South Dakota Mesonet site BFMS2 7 miles west-southwest of Beresford.

Dangerous heat index readings reached afternoon peaks as high as 111 degrees 2 miles northeast of Vermillion, 109 degrees at Vermillion, and 107 degrees at Wakonda on July 23.

A wind gust was estimated around 60 mph at the intersection of 455th Avenue and 306th Street.

Daily afternoon and evening heat indices ranged from 105 to 114 degrees with a maximum heat index of 114 degrees at the Automated Weather Observing System site at Vermillion on June 20, 113 degrees at a personal weather station near Wakonda on June 21, and 110 degrees at the Sout…

Several large trees limbs were brought down by thunderstorm winds. One large tree was blown over and was leaning on a house.

A portion of a storage building was destroyed by thunderstorm wind gusts.

Sustained easterly winds reached 30 to 34 mph with gusts as high as 50 mph 7 miles west-southwest of Beresford.

Aided by rain showers, winds briefly gusted above 58 mph, with a peak gust of 60 mph at the South Dakota Road Weather Information System site near Irene.

Snowfall totaled 2.0 inches at Vermillion.

Northwest winds were sustained from 40 to 45 mph at times, with gusts as high as 60 mph at Wakonda.

Snowfall totaled 1.3 inches at Vermillion. Northerly winds sustained from 40 to 45 mph gusted as high as 60 mph near Wakonda and resulted in visibility briefly as low as one-half mile with hazardous travel conditions.

Severe (D2) drought conditions improved to moderate (D1) late month.

Winds were sustained at 30 to 36 mph with a peak gust of 47 mph 7 miles west-southwest of Beresford and 46 mph at Vermillion.

The lowest wind chills ranged from 35 to 41 below zero with 41 below zero observed at the South Dakota Mesonet site near Beresford.

The lowest wind chills ranged from 35 to 40 below zero with 40 below zero observed at the South Dakota Mesonet site near Beresford.

Wind chill temperatures ranged from 25 to 34 below zero during the early morning hours. A South Dakota State University Mesonet site 7 miles west-southwest of Beresford briefly dipped as low as 38 below zero.

Snowfall totaled 2.0 inches 1.4 miles southeast of Vermillion.

Severe (D2) drought conditions persisted through the month.

The lowest wind chills ranged from 35 to 36 below zero with 36 below zero observed at the South Dakota Mesonet site near Beresford.

Severe (D2) drought conditions persisted through the month.

Winds were sustained from 40 to 42 mph at times at Vermillion.

Winds were sustained from 30 to 38 mph with gusts as high as 54 mph at Vermillion and 49 mph 7 miles west-southwest of Beresford.

Extreme (D3) drought conditions improved slightly to severe (D2) drought by mid-December.

Winds occasionally gusted as high as 51 mph near Irene.

Severe (D2) drought worsened to extreme (D3) drought mid-November due to an early month dry period.

Severe (D2) drought developed with precipitation around 6 inches below normal since August 1.

Afternoon and early evening heat index values reached as high as 112 degrees at Vermillion and 109 degrees near Wakonda on August 25, as well as 108 degrees at Vermillion on August 26.

Afternoon heat index values reached 100 degrees at the South Dakota State University Mesonet site 8 miles west-southwest of Beresford.

Two-day heat index readings peaked very briefly at 106 degrees at a personal weather station near Vermillion and 103 degrees in Wakonda.

Heat index values reached 108 degrees at Vermillion and near Wakonda.

A tree was downed by thunderstorm winds in Vermillion.