Overview Realtime Historical Map View
Heat Advisory
2026-07-16T21:00:00-06:00

* WHAT...Heat index values between 95 and 105. * WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming. * WHEN...Until 9 PM MDT /10 PM CDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Belle Fourche River Near Alva, Wy Historical Data

Historical Data


Streamflow Range


Date Average 2016 2015 2014 2013 2012 2011
01-01 41.0
01-02 42.0
01-03 42.0
01-04 40.0
01-05 42.0
01-06 41.0
01-07 41.0
01-08 42.0
01-09 41.0
01-10 41.0
01-11 42.0
01-12 42.0
01-13 42.0
01-14 42.0
01-15 42.0
01-16 42.0
01-17 42.0
01-18 43.0
01-19 45.0
01-20 46.0
01-21 42.0
01-22 39.0
01-23 45.0
01-24 46.0
01-25 51.0
01-26 57.0
01-27 61.0
01-28 63.0
01-29 98.0
01-30 100.0
01-31 149.0
02-01 112.0
02-02 69.0
02-03 69.0
02-04 63.0
02-05 54.0
02-06 69.0
02-07 73.0
02-08 75.0
02-09 79.0
02-10 88.0
02-11 108.0
02-12 110.0
02-13 112.0
02-14 127.0
02-15 105.0
02-16 95.0
02-17 82.0
02-18 36.0
02-19 71.0
02-20 73.0
02-21 75.0
02-22 55.0
02-23 29.0
02-24 69.0
02-25 79.0
02-26 49.0
02-27 32.0
02-28 58.0
03-01 61.0
03-02 54.0
03-03 64.0
03-04 43.0
03-05 46.0
03-06 58.0
03-07 65.0
03-08 69.0
03-09 81.0
03-10 68.0
03-11 76.0
03-12 90.0
03-13 112.0
03-14 18.0
03-15 17.0
03-16 17.0
03-17 85.0
03-18 82.0
03-19 78.0
03-20 72.0
03-21 68.0
03-22 65.0
03-23 64.0
03-24 63.0
03-25 71.0
03-26 68.0
03-27 67.0
03-28 62.0
03-29 58.0
03-30 54.0
03-31 50.0
04-01 51.0
04-02 83.33
04-03 81.67
04-04 81.0
04-05 79.67
04-06 79.0
04-07 83.67
04-08 73.0
04-09 96.8
04-10 104.0
04-11 111.2
04-12 112.2
04-13 117.4
04-14 110.0
04-15 119.25
04-16 136.67
04-17 137.67
04-18 113.5
04-19 132.33
04-20 137.33
04-21 115.0
04-22 99.6
04-23 97.6
04-24 102.4
04-25 106.6
04-26 65.5
04-27 68.0
04-28 71.25
04-29 131.0
04-30 130.6
05-01 161.67
05-02 156.0
05-03 104.2
05-04 137.67
05-05 133.0
05-06 132.67
05-07 139.17
05-08 149.83
05-09 189.17
05-10 171.83
05-11 177.0
05-12 233.33
05-13 185.67
05-14 162.67
05-15 144.0
05-16 131.17
05-17 124.0
05-18 120.5
05-19 125.33
05-20 123.17
05-21 205.33
05-22 467.5
05-23 990.33
05-24 721.17
05-25 460.5
05-26 377.17
05-27 330.83
05-28 259.5
05-29 229.67
05-30 248.33
05-31 272.83
06-01 494.5
06-02 558.83
06-03 421.17
06-04 288.83
06-05 263.5
06-06 271.17
06-07 205.67
06-08 184.5
06-09 165.0
06-10 159.17
06-11 191.5
06-12 234.8
06-13 160.8
06-14 141.6
06-15 137.5
06-16 128.67
06-17 120.67
06-18 131.33
06-19 149.6
06-20 190.8
06-21 162.0
06-22 181.2
06-23 231.4
06-24 201.4
06-25 176.2
06-26 173.4
06-27 161.0
06-28 169.2
06-29 175.0
06-30 141.6
07-01 128.6
07-02 122.0
07-03 120.6
07-04 123.4
07-05 123.2
07-06 120.6
07-07 135.8
07-08 120.8
07-09 120.2
07-10 112.4
07-11 115.0
07-12 96.75
07-13 106.0
07-14 149.8
07-15 107.6
07-16 101.6
07-17 103.4
07-18 98.2
07-19 98.2
07-20 93.2
07-21 89.6
07-22 88.6
07-23 86.6
07-24 89.0
07-25 87.2
07-26 92.6
07-27 90.2
07-28 88.2
07-29 84.8
07-30 80.25
07-31 83.4
08-01 81.6
08-02 78.8
08-03 81.6
08-04 80.4
08-05 79.4
08-06 120.0
08-07 94.6
08-08 81.75
08-09 74.75
08-10 81.0
08-11 79.4
08-12 82.6
08-13 72.5
08-14 100.8
08-15 76.2
08-16 74.4
08-17 70.25
08-18 66.0
08-19 59.75
08-20 56.5
08-21 54.75
08-22 57.8
08-23 57.2
08-24 104.75
08-25 76.4
08-26 59.2
08-27 56.2
08-28 54.2
08-29 51.2
08-30 52.4
08-31 52.2
09-01 58.6
09-02 56.2
09-03 55.4
09-04 53.6
09-05 51.0
09-06 46.8
09-07 45.2
09-08 43.6
09-09 44.8
09-10 45.8
09-11 44.8
09-12 45.8
09-13 44.0
09-14 42.4
09-15 40.4
09-16 36.5
09-17 40.0
09-18 44.8
09-19 42.8
09-20 41.6
09-21 34.75
09-22 37.8
09-23 37.8
09-24 37.2
09-25 37.6
09-26 36.2
09-27 35.6
09-28 38.6
09-29 37.2
09-30 37.2
10-01 52.0
10-02 44.0
10-03 40.0
10-04 38.5
10-05 39.0
10-06 37.5
10-07 36.5
10-08 36.0
10-09 34.5
10-10 34.0
10-11 34.0
10-12 33.0
10-13 36.5
10-14 36.5
10-15 36.5
10-16 35.5
10-17 33.5
10-18 32.5
10-19 32.5
10-20 32.5
10-21 32.5
10-22 32.5
10-23 36.0
10-24 36.0
10-25 35.0
10-26 35.0
10-27 34.5
10-28 35.0
10-29 34.5
10-30 34.5
10-31 34.5
11-01 43.0
11-02 34.0
11-03 33.5
11-04 33.5
11-05 33.5
11-06 34.0
11-07 34.5
11-08 34.5
11-09 34.0
11-10 34.5
11-11 36.5
11-12 28.5
11-13 30.0
11-14 33.5
11-15 31.5
11-16 31.0
11-17 37.0
11-18 38.0
11-19 37.0
11-20 25.5
11-21 28.5
11-22 37.0
11-23 43.0
11-24 42.0
11-25 43.0
11-26 43.0
11-27 43.0
11-28 41.0
11-29 48.0
11-30 37.0
12-01 28.0
12-02 48.0
12-03 44.0
12-04 40.0
12-05 42.0
12-06 43.0
12-07 43.0
12-08 44.0
12-09 42.0
12-10 42.0
12-11 43.0
12-12 48.0
12-13 52.0
12-14 56.0
12-15 52.0
12-16 35.0
12-17 44.0
12-18 43.0
12-19 50.0
12-20 56.0
12-21 50.0
12-22 52.0
12-23 48.0
12-24 33.0
12-25 45.0
12-26 47.0
12-27 36.0
12-28 35.0
12-29 45.0
12-30 34.0
12-31 37.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index