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Severe Thunderstorm Watch
2026-08-30T21:00:00-06:00

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 636 IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR THE FOLLOWING AREAS IN SOUTH DAKOTA THIS WATCH INCLUDES 5 COUNTIES IN NORTHWEST SOUTH DAKOTA BUTTE HARDING PERKINS IN WEST CENTRAL SOUTH DAKOTA LAWRENCE MEADE IN WYOMING THIS WATCH INCLUDES 1 COUNTY IN NORTHEAST WYOMING CROOK THIS INCLUDES THE CITIES OF BISON, BUFFALO, DEADWOOD, DOWNTOWN BELLE FOURCHE, FAITH, LEAD, LEMMON, MOORCROFT, SPEARFISH, STURGIS, SUNDANCE, AND UNION CENTER.

Little Spearfish Creek Near Lead, Sd Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 17.3
01-02 18.08
01-03 16.99
01-04 16.87
01-05 16.5
01-06 16.22
01-07 16.16
01-08 16.32
01-09 16.22
01-10 16.6
01-11 16.58
01-12 16.08
01-13 17.34
01-14 17.34
01-15 16.56
01-16 16.5
01-17 16.08
01-18 16.75
01-19 15.91
01-20 15.74
01-21 15.88
01-22 15.8
01-23 16.05
01-24 16.37
01-25 16.49
01-26 16.16
01-27 16.14
01-28 16.38
01-29 16.34
01-30 15.7
01-31 15.62
02-01 15.65
02-02 15.61
02-03 15.8
02-04 15.71
02-05 15.95
02-06 16.7
02-07 17.37
02-08 17.34
02-09 16.63
02-10 16.6
02-11 16.85
02-12 16.38
02-13 16.58
02-14 16.53
02-15 16.5
02-16 16.33
02-17 16.72
02-18 16.48
02-19 16.37
02-20 16.26
02-21 16.18
02-22 16.04
02-23 15.84
02-24 15.91
02-25 16.35
02-26 16.0
02-27 15.6
02-28 15.94
02-29 18.52
03-01 15.93
03-02 15.77
03-03 15.85
03-04 15.75
03-05 15.4
03-06 15.79
03-07 15.68
03-08 15.68
03-09 15.76
03-10 15.76
03-11 15.77
03-12 15.74
03-13 15.87
03-14 15.81
03-15 16.17
03-16 16.33
03-17 16.13
03-18 16.21
03-19 16.37
03-20 15.86
03-21 16.88
03-22 16.43
03-23 16.03
03-24 17.37
03-25 17.31
03-26 17.26
03-27 17.31
03-28 17.2
03-29 17.19
03-30 17.28
03-31 16.67
04-01 17.18
04-02 17.24
04-03 17.28
04-04 17.37
04-05 17.56
04-06 17.6
04-07 17.82
04-08 17.8
04-09 18.17
04-10 17.94
04-11 17.96
04-12 18.58
04-13 18.61
04-14 18.58
04-15 17.97
04-16 18.17
04-17 18.25
04-18 18.26
04-19 18.76
04-20 18.8
04-21 19.46
04-22 19.72
04-23 20.71
04-24 21.24
04-25 21.89
04-26 21.88
04-27 22.54
04-28 22.63
04-29 22.7
04-30 22.86
05-01 23.24
05-02 23.6
05-03 23.89
05-04 23.96
05-05 24.37
05-06 25.37
05-07 26.29
05-08 27.62
05-09 24.99
05-10 25.87
05-11 24.97
05-12 25.14
05-13 24.97
05-14 24.73
05-15 24.24
05-16 23.79
05-17 24.08
05-18 24.26
05-19 23.76
05-20 24.97
05-21 25.05
05-22 26.73
05-23 26.9
05-24 26.81
05-25 27.05
05-26 26.67
05-27 26.95
05-28 26.9
05-29 26.65
05-30 27.52
05-31 28.69
06-01 40.13
06-02 28.92
06-03 26.99
06-04 25.83
06-05 25.9
06-06 25.32
06-07 24.82
06-08 24.39
06-09 24.47
06-10 24.0
06-11 23.9
06-12 22.98
06-13 23.64
06-14 23.1
06-15 24.62
06-16 24.04
06-17 24.02
06-18 24.11
06-19 23.59
06-20 23.95
06-21 24.27
06-22 24.25
06-23 23.67
06-24 23.56
06-25 23.75
06-26 23.54
06-27 23.4
06-28 23.53
06-29 23.18
06-30 22.75
07-01 23.11
07-02 22.94
07-03 22.84
07-04 22.65
07-05 23.13
07-06 23.34
07-07 23.53
07-08 24.13
07-09 23.56
07-10 23.75
07-11 23.77
07-12 23.36
07-13 24.22
07-14 23.68
07-15 23.69
07-16 23.65
07-17 23.89
07-18 24.01
07-19 23.18
07-20 23.33
07-21 22.47
07-22 22.95
07-23 22.47
07-24 22.52
07-25 22.57
07-26 22.47
07-27 22.71
07-28 22.61
07-29 22.57
07-30 21.44
07-31 22.07
08-01 22.55
08-02 22.08
08-03 22.15
08-04 22.67
08-05 22.68
08-06 22.89
08-07 22.98
08-08 21.89
08-09 21.53
08-10 21.53
08-11 22.73
08-12 22.54
08-13 22.29
08-14 22.34
08-15 22.64
08-16 22.67
08-17 22.46
08-18 21.51
08-19 21.56
08-20 21.29
08-21 21.32
08-22 21.6
08-23 22.26
08-24 21.85
08-25 22.03
08-26 21.96
08-27 22.2
08-28 22.27
08-29 21.72
08-30 21.83
08-31 22.32
09-01 22.27
09-02 22.17
09-03 21.98
09-04 21.88
09-05 21.87
09-06 21.81
09-07 21.79
09-08 21.97
09-09 22.18
09-10 22.29
09-11 22.11
09-12 21.89
09-13 21.98
09-14 22.22
09-15 22.31
09-16 22.03
09-17 22.32
09-18 22.25
09-19 22.72
09-20 22.13
09-21 21.45
09-22 20.32
09-23 21.49
09-24 21.6
09-25 21.57
09-26 21.51
09-27 21.42
09-28 20.25
09-29 21.63
09-30 21.76
10-01 22.54
10-02 22.15
10-03 22.26
10-04 22.4
10-05 21.79
10-06 21.44
10-07 21.71
10-08 21.21
10-09 21.01
10-10 20.87
10-11 20.34
10-12 20.69
10-13 21.01
10-14 20.66
10-15 20.95
10-16 21.02
10-17 20.69
10-18 20.64
10-19 20.78
10-20 20.92
10-21 20.78
10-22 20.54
10-23 20.6
10-24 20.44
10-25 20.34
10-26 20.21
10-27 20.32
10-28 20.19
10-29 20.38
10-30 20.28
10-31 20.09
11-01 20.24
11-02 19.91
11-03 20.09
11-04 20.19
11-05 20.35
11-06 20.25
11-07 19.96
11-08 20.16
11-09 20.02
11-10 19.85
11-11 19.82
11-12 19.6
11-13 19.46
11-14 19.39
11-15 19.49
11-16 19.34
11-17 18.92
11-18 18.86
11-19 18.85
11-20 18.55
11-21 19.07
11-22 18.79
11-23 18.55
11-24 19.18
11-25 19.2
11-26 18.61
11-27 18.34
11-28 17.65
11-29 18.36
11-30 18.11
12-01 18.01
12-02 18.58
12-03 18.35
12-04 18.23
12-05 17.97
12-06 17.64
12-07 18.05
12-08 18.19
12-09 18.25
12-10 17.82
12-11 17.87
12-12 18.06
12-13 18.06
12-14 17.2
12-15 17.23
12-16 17.28
12-17 17.51
12-18 17.54
12-19 17.27
12-20 16.75
12-21 16.7
12-22 17.2
12-23 17.2
12-24 17.2
12-25 17.13
12-26 17.19
12-27 17.53
12-28 17.39
12-29 16.64
12-30 17.16
12-31 17.05

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index