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

* WHAT...Hot conditions with temperatures up to 100 degrees expected. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Lower Columbia Basin of Oregon and Washington, Grande Ronde Valley, Wallowa County, Foothills of the Northern Blue Mountains of Oregon, Kittitas Valley, Yakima Valley, and Foothills of the Blue Mountains of Washington. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses.

Ahtanum Creek At Union Gap, Wa 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 43.59
01-02 43.64
01-03 46.54
01-04 48.27
01-05 48.31
01-06 56.6
01-07 49.96
01-08 49.43
01-09 48.17
01-10 51.18
01-11 45.45
01-12 45.78
01-13 43.01
01-14 57.09
01-15 50.57
01-16 53.35
01-17 51.05
01-18 50.74
01-19 70.24
01-20 58.52
01-21 56.49
01-22 55.29
01-23 57.15
01-24 54.93
01-25 60.03
01-26 60.86
01-27 57.1
01-28 59.25
01-29 63.92
01-30 59.03
01-31 60.34
02-01 66.88
02-02 68.55
02-03 65.53
02-04 71.36
02-05 81.85
02-06 91.23
02-07 105.21
02-08 116.1
02-09 110.27
02-10 98.6
02-11 97.94
02-12 95.45
02-13 87.23
02-14 89.18
02-15 103.65
02-16 103.78
02-17 98.43
02-18 96.68
02-19 88.46
02-20 81.28
02-21 77.22
02-22 73.99
02-23 99.92
02-24 79.45
02-25 85.57
02-26 79.43
02-27 75.58
02-28 76.63
02-29 96.6
03-01 65.82
03-02 81.88
03-03 80.35
03-04 79.76
03-05 80.66
03-06 86.25
03-07 135.67
03-08 123.93
03-09 109.63
03-10 120.29
03-11 117.96
03-12 108.34
03-13 106.88
03-14 113.7
03-15 120.68
03-16 120.25
03-17 115.64
03-18 112.13
03-19 155.97
03-20 162.2
03-21 174.23
03-22 196.21
03-23 175.52
03-24 167.47
03-25 174.43
03-26 171.71
03-27 171.6
03-28 127.2
03-29 148.94
03-30 149.36
03-31 166.39
04-01 160.62
04-02 154.04
04-03 151.25
04-04 151.88
04-05 153.0
04-06 133.73
04-07 156.08
04-08 172.96
04-09 125.83
04-10 176.91
04-11 177.62
04-12 187.63
04-13 183.41
04-14 181.41
04-15 146.22
04-16 115.03
04-17 85.54
04-18 111.15
04-19 108.75
04-20 111.94
04-21 124.94
04-22 132.44
04-23 140.39
04-24 146.16
04-25 157.36
04-26 146.61
04-27 143.45
04-28 141.85
04-29 136.74
04-30 121.35
05-01 132.19
05-02 118.62
05-03 115.36
05-04 140.25
05-05 160.19
05-06 172.92
05-07 177.72
05-08 157.22
05-09 184.37
05-10 170.24
05-11 180.34
05-12 180.13
05-13 182.36
05-14 164.86
05-15 179.42
05-16 234.5
05-17 242.31
05-18 216.23
05-19 201.79
05-20 193.76
05-21 195.15
05-22 193.51
05-23 179.28
05-24 169.06
05-25 166.64
05-26 160.13
05-27 152.89
05-28 149.53
05-29 147.21
05-30 148.15
05-31 146.73
06-01 137.39
06-02 143.86
06-03 139.69
06-04 138.87
06-05 140.85
06-06 138.75
06-07 134.38
06-08 133.94
06-09 130.59
06-10 121.42
06-11 113.34
06-12 115.09
06-13 112.42
06-14 106.11
06-15 95.33
06-16 93.35
06-17 88.14
06-18 88.37
06-19 91.1
06-20 82.81
06-21 76.79
06-22 72.81
06-23 71.98
06-24 68.66
06-25 63.2
06-26 56.42
06-27 54.22
06-28 50.15
06-29 47.55
06-30 45.76
07-01 44.81
07-02 41.27
07-03 38.86
07-04 39.04
07-05 36.87
07-06 34.29
07-07 32.41
07-08 31.75
07-09 31.95
07-10 29.58
07-11 29.19
07-12 34.38
07-13 32.69
07-14 29.08
07-15 27.83
07-16 27.76
07-17 27.07
07-18 27.55
07-19 26.23
07-20 24.9
07-21 23.46
07-22 23.06
07-23 20.96
07-24 22.15
07-25 20.81
07-26 20.94
07-27 20.57
07-28 19.98
07-29 19.97
07-30 18.59
07-31 18.07
08-01 16.91
08-02 17.35
08-03 16.57
08-04 16.85
08-05 16.42
08-06 16.91
08-07 16.73
08-08 17.78
08-09 17.23
08-10 16.75
08-11 17.75
08-12 17.52
08-13 17.13
08-14 16.57
08-15 16.74
08-16 17.6
08-17 17.58
08-18 16.91
08-19 16.24
08-20 16.79
08-21 16.8
08-22 16.29
08-23 16.96
08-24 17.12
08-25 16.39
08-26 17.07
08-27 16.68
08-28 16.71
08-29 16.54
08-30 16.22
08-31 16.32
09-01 16.49
09-02 16.94
09-03 16.74
09-04 16.99
09-05 17.05
09-06 16.86
09-07 18.69
09-08 17.61
09-09 18.04
09-10 18.04
09-11 17.79
09-12 18.03
09-13 18.12
09-14 18.52
09-15 18.46
09-16 19.08
09-17 18.61
09-18 19.46
09-19 19.81
09-20 19.89
09-21 20.47
09-22 19.99
09-23 20.03
09-24 20.39
09-25 20.48
09-26 20.55
09-27 20.61
09-28 20.74
09-29 21.36
09-30 23.02
10-01 22.72
10-02 22.75
10-03 23.25
10-04 22.69
10-05 21.71
10-06 22.31
10-07 22.17
10-08 22.02
10-09 22.13
10-10 22.94
10-11 23.92
10-12 23.74
10-13 24.99
10-14 26.16
10-15 28.81
10-16 29.41
10-17 29.26
10-18 27.5
10-19 26.38
10-20 27.82
10-21 27.89
10-22 29.38
10-23 43.02
10-24 35.13
10-25 33.79
10-26 29.73
10-27 32.75
10-28 34.37
10-29 38.63
10-30 41.04
10-31 38.68
11-01 41.9
11-02 40.91
11-03 42.31
11-04 41.84
11-05 41.52
11-06 47.33
11-07 47.67
11-08 48.7
11-09 45.95
11-10 44.81
11-11 45.2
11-12 44.36
11-13 46.35
11-14 42.01
11-15 44.12
11-16 44.51
11-17 36.23
11-18 43.73
11-19 42.13
11-20 41.51
11-21 48.08
11-22 48.35
11-23 41.41
11-24 46.98
11-25 43.84
11-26 69.4
11-27 62.27
11-28 55.92
11-29 53.59
11-30 52.23
12-01 47.54
12-02 49.92
12-03 54.48
12-04 47.46
12-05 46.16
12-06 41.08
12-07 47.55
12-08 37.52
12-09 77.53
12-10 72.89
12-11 72.29
12-12 74.54
12-13 56.95
12-14 48.98
12-15 47.16
12-16 43.81
12-17 44.51
12-18 55.78
12-19 56.27
12-20 71.58
12-21 66.9
12-22 66.16
12-23 56.82
12-24 50.32
12-25 47.32
12-26 53.28
12-27 45.98
12-28 51.82
12-29 51.59
12-30 53.39
12-31 47.52

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index