Overview Realtime Historical Map View
Heat Advisory
2026-07-20T22:00:00-05:00

* WHAT...Heat index values up to 105 to 110. * WHERE...Portions of southwest and west central Iowa and east central, northeast, and southeast Nebraska. * WHEN...From 10 AM to 10 PM CDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Overnight heat index values between 75 to 80 will provide little relief.

South Omaha Creek At Walthill, Nebr. 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 25.5
01-02 35.0
01-03 24.0
01-04 24.0
01-05 23.5
01-06 15.0
01-07 14.0
01-08 14.0
01-09 13.0
01-10 14.0
01-17 11.0
01-30 15.0
01-31 17.0
02-01 17.0
02-02 15.0
02-03 15.0
02-04 16.0
02-05 15.0
02-06 15.0
02-07 15.0
02-17 10.61
02-18 9.97
02-19 16.1
02-20 46.68
02-21 29.46
02-22 26.27
02-23 25.44
02-24 25.84
02-25 32.47
02-26 26.31
02-27 25.12
02-28 24.3
02-29 35.5
03-01 19.25
03-02 17.56
03-03 20.42
03-04 17.12
03-05 16.8
03-06 17.28
03-07 19.52
03-08 21.12
03-09 22.94
03-10 25.33
03-11 24.32
03-12 20.83
03-13 21.47
03-14 56.14
03-15 32.24
03-16 26.81
03-17 24.57
03-18 25.14
03-19 23.99
03-20 23.74
03-21 22.48
03-22 19.52
03-23 21.55
03-24 24.79
03-25 25.42
03-26 24.68
03-27 23.08
03-28 22.14
03-29 23.35
03-30 22.54
03-31 19.5
04-01 21.78
04-02 22.53
04-03 23.77
04-04 24.29
04-05 22.13
04-06 21.25
04-07 22.2
04-08 21.26
04-09 20.74
04-10 24.17
04-11 22.46
04-12 22.01
04-13 21.9
04-14 21.14
04-15 31.63
04-16 22.12
04-17 21.17
04-18 21.94
04-19 22.16
04-20 22.11
04-21 29.56
04-22 24.22
04-23 23.93
04-24 22.99
04-25 22.62
04-26 21.81
04-27 21.64
04-28 26.17
04-29 24.73
04-30 23.83
05-01 33.73
05-02 28.41
05-03 26.9
05-04 26.23
05-05 25.65
05-06 25.6
05-07 25.19
05-08 24.31
05-09 26.55
05-10 24.77
05-11 24.43
05-12 25.74
05-13 25.77
05-14 23.18
05-15 24.9
05-16 24.26
05-17 25.36
05-18 26.22
05-19 23.56
05-20 27.2
05-21 26.8
05-22 35.09
05-23 27.36
05-24 30.28
05-25 27.85
05-26 34.67
05-27 32.8
05-28 38.5
05-29 34.23
05-30 34.95
05-31 31.97
06-01 30.2
06-02 29.33
06-03 28.06
06-04 32.14
06-05 27.95
06-06 30.66
06-07 27.56
06-08 26.7
06-09 26.3
06-10 26.73
06-11 24.96
06-12 24.46
06-13 22.83
06-14 23.9
06-15 25.9
06-16 27.41
06-17 43.83
06-18 26.98
06-19 46.66
06-20 28.92
06-21 88.99
06-22 31.3
06-23 30.75
06-24 29.36
06-25 63.23
06-26 27.8
06-27 63.64
06-28 38.17
06-29 35.61
06-30 32.77
07-01 38.03
07-02 33.68
07-03 31.3
07-04 30.91
07-05 30.2
07-06 31.1
07-07 29.1
07-08 29.07
07-09 27.41
07-10 20.69
07-11 27.79
07-12 24.88
07-13 21.96
07-14 22.31
07-15 21.08
07-16 21.05
07-17 20.09
07-18 19.17
07-19 18.18
07-20 18.04
07-21 17.52
07-22 17.63
07-23 16.77
07-24 16.12
07-25 15.88
07-26 15.55
07-27 14.89
07-28 15.14
07-29 15.6
07-30 16.52
07-31 16.0
08-01 15.39
08-02 13.94
08-03 17.03
08-04 14.49
08-05 14.81
08-06 16.49
08-07 16.84
08-08 15.79
08-09 14.39
08-10 13.79
08-11 16.62
08-12 20.2
08-13 13.34
08-14 13.14
08-15 12.7
08-16 14.02
08-17 16.37
08-18 12.51
08-19 30.35
08-20 22.82
08-21 17.26
08-22 14.02
08-23 16.66
08-24 15.26
08-25 15.46
08-26 16.53
08-27 17.77
08-28 15.8
08-29 15.84
08-30 76.81
08-31 16.33
09-01 21.64
09-02 16.46
09-03 14.99
09-04 14.72
09-05 21.63
09-06 17.6
09-07 16.21
09-08 15.51
09-09 15.3
09-10 15.52
09-11 15.19
09-12 14.16
09-13 13.82
09-14 13.31
09-15 13.04
09-16 15.45
09-17 12.74
09-18 13.43
09-19 14.62
09-20 13.93
09-21 12.95
09-22 12.71
09-23 12.8
09-24 15.97
09-25 47.63
09-26 17.01
09-27 14.9
09-28 14.29
09-29 14.93
09-30 15.23
10-01 16.52
10-02 18.02
10-03 20.65
10-04 15.04
10-05 15.83
10-06 15.0
10-07 27.51
10-08 18.78
10-09 17.97
10-10 23.07
10-11 17.8
10-12 18.43
10-13 18.44
10-14 17.72
10-15 28.78
10-16 15.36
10-17 17.37
10-18 17.06
10-19 16.73
10-20 14.94
10-21 15.6
10-22 16.49
10-23 16.54
10-24 16.32
10-25 16.4
10-26 16.63
10-27 15.51
10-28 18.32
10-29 16.02
10-30 15.67
10-31 15.99
11-01 16.68
11-02 14.89
11-03 15.7
11-04 17.45
11-05 16.17
11-06 17.52
11-07 15.81
11-08 15.32
11-09 15.53
11-10 15.75
11-11 16.48
11-12 21.86
11-13 17.14
11-14 15.8
11-15 16.94
11-16 16.75
11-17 16.92
11-18 15.9
11-19 16.87
11-20 15.43
11-21 17.87
11-22 17.63
11-23 18.64
11-24 16.32
11-25 16.45
11-26 16.32
11-27 15.73
11-28 16.44
11-29 17.42
11-30 16.69
12-01 18.18
12-02 17.07
12-03 17.46
12-04 19.9
12-05 19.97
12-06 22.91
12-07 20.87
12-08 21.08
12-09 23.28
12-10 23.16
12-11 23.35
12-12 21.1
12-13 20.48
12-14 15.35
12-15 16.38
12-16 17.25
12-17 21.7
12-18 20.9
12-19 21.56
12-20 16.93
12-21 18.16
12-22 22.29
12-23 43.0
12-24 46.0
12-25 27.5
12-26 26.5
12-27 26.5
12-28 24.5
12-29 15.0
12-30 26.0
12-31 25.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index