Overview Realtime Historical Map View
Heat Advisory
2026-08-07T22:00:00-07:00

* WHAT...Hot conditions with high temperatures up to 85 to 90 degrees expected. This will pose a moderate risk of heat-related illness. * WHERE...Portions of northwest and west central Washington. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

Rock Creek At Highway 516 Near Ravensdale, 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 21.83
01-02 22.18
01-03 19.52
01-04 23.0
01-05 23.67
01-06 24.6
01-07 31.01
01-08 34.38
01-09 32.68
01-10 31.62
01-11 30.64
01-12 31.21
01-13 34.46
01-14 34.29
01-15 32.02
01-16 25.91
01-17 25.26
01-18 29.07
01-19 27.74
01-20 24.16
01-21 25.77
01-22 23.27
01-23 21.64
01-24 24.05
01-25 23.51
01-26 24.33
01-27 27.78
01-28 28.81
01-29 29.24
01-30 28.28
01-31 29.61
02-01 32.7
02-02 34.88
02-03 32.63
02-04 31.09
02-05 30.56
02-06 33.71
02-07 27.41
02-08 48.49
02-09 39.47
02-10 37.98
02-11 36.01
02-12 33.34
02-13 32.43
02-14 31.58
02-15 29.17
02-16 30.77
02-17 22.8
02-18 24.75
02-19 30.25
02-20 31.35
02-21 28.99
02-22 28.58
02-23 30.81
02-24 31.32
02-25 26.47
02-26 28.72
02-27 28.96
02-28 28.34
02-29 34.15
03-01 32.4
03-02 33.16
03-03 32.79
03-04 31.13
03-05 30.74
03-06 30.7
03-07 30.71
03-08 29.2
03-09 28.63
03-10 28.93
03-11 24.42
03-12 24.28
03-13 32.51
03-14 30.74
03-15 31.59
03-16 32.07
03-17 28.64
03-18 28.88
03-19 34.9
03-20 41.06
03-21 38.86
03-22 37.89
03-23 34.86
03-24 33.31
03-25 32.55
03-26 32.04
03-27 31.76
03-28 31.29
03-29 31.46
03-30 31.54
03-31 31.19
04-01 28.84
04-02 28.05
04-03 27.13
04-04 26.35
04-05 25.55
04-06 22.98
04-07 24.6
04-08 25.54
04-09 25.2
04-10 25.29
04-11 25.15
04-12 25.79
04-13 25.75
04-14 25.81
04-15 27.12
04-16 27.22
04-17 26.38
04-18 26.45
04-19 25.81
04-20 25.98
04-21 25.22
04-22 24.77
04-23 24.64
04-24 24.49
04-25 23.28
04-26 23.74
04-27 23.16
04-28 22.46
04-29 22.39
04-30 21.14
05-01 21.85
05-02 20.64
05-03 20.27
05-04 20.38
05-05 20.4
05-06 20.46
05-07 20.07
05-08 19.36
05-09 19.8
05-10 19.57
05-11 18.68
05-12 18.36
05-13 17.84
05-14 16.89
05-15 16.74
05-16 18.73
05-17 17.75
05-18 16.71
05-19 16.82
05-20 16.22
05-21 15.46
05-22 15.03
05-23 14.58
05-24 14.15
05-25 13.72
05-26 13.35
05-27 13.06
05-28 12.58
05-29 12.11
05-30 11.91
05-31 11.53
06-01 11.33
06-02 10.68
06-03 10.81
06-04 10.53
06-05 10.59
06-06 10.75
06-07 10.4
06-08 10.24
06-09 9.91
06-10 9.97
06-11 9.9
06-12 10.45
06-13 10.36
06-14 10.21
06-15 9.47
06-16 9.6
06-17 9.25
06-18 9.2
06-19 9.37
06-20 9.22
06-21 8.84
06-22 8.68
06-23 8.52
06-24 8.44
06-25 8.15
06-26 8.0
06-27 7.88
06-28 7.62
06-29 7.55
06-30 7.29
07-01 6.98
07-02 6.95
07-03 6.78
07-04 6.65
07-05 6.49
07-06 6.44
07-07 6.28
07-08 6.26
07-09 6.12
07-10 5.86
07-11 5.76
07-12 5.35
07-13 5.6
07-14 5.51
07-15 5.44
07-16 5.37
07-17 5.13
07-18 5.25
07-19 5.24
07-20 5.13
07-21 5.01
07-22 5.11
07-23 5.05
07-24 5.02
07-25 4.77
07-26 4.65
07-27 4.66
07-28 4.44
07-29 4.29
07-30 4.35
07-31 4.11
08-01 3.89
08-02 4.03
08-03 4.05
08-04 4.07
08-05 4.05
08-06 3.83
08-07 3.91
08-08 4.03
08-09 3.96
08-10 4.08
08-11 3.81
08-12 3.69
08-13 3.78
08-14 3.63
08-15 3.6
08-16 3.72
08-17 3.74
08-18 3.54
08-19 3.35
08-20 3.23
08-21 3.38
08-22 3.29
08-23 2.97
08-24 3.13
08-25 3.11
08-26 3.04
08-27 2.99
08-28 2.95
08-29 2.85
08-30 2.78
08-31 3.03
09-01 2.84
09-02 2.93
09-03 2.76
09-04 2.71
09-05 2.74
09-06 2.74
09-07 2.68
09-08 2.73
09-09 2.59
09-10 2.57
09-11 2.51
09-12 2.55
09-13 2.6
09-14 2.48
09-15 2.39
09-16 2.5
09-17 2.49
09-18 2.57
09-19 2.54
09-20 2.55
09-21 2.48
09-22 2.36
09-23 2.42
09-24 2.57
09-25 2.72
09-26 2.8
09-27 2.9
09-28 2.93
09-29 3.12
09-30 3.2
10-01 3.32
10-02 3.51
10-03 3.48
10-04 3.47
10-05 3.46
10-06 3.36
10-07 3.41
10-08 3.45
10-09 3.52
10-10 3.52
10-11 3.52
10-12 3.54
10-13 3.49
10-14 3.64
10-15 3.6
10-16 3.63
10-17 3.61
10-18 3.53
10-19 3.6
10-20 3.69
10-21 3.76
10-22 4.15
10-23 4.02
10-24 4.12
10-25 4.03
10-26 4.08
10-27 4.1
10-28 4.38
10-29 4.42
10-30 4.4
10-31 4.66
11-01 4.49
11-02 4.69
11-03 4.52
11-04 4.68
11-05 4.6
11-06 4.89
11-07 5.07
11-08 4.8
11-09 4.86
11-10 4.98
11-11 4.95
11-12 5.31
11-13 5.78
11-14 6.51
11-15 6.7
11-16 7.09
11-17 6.0
11-18 6.87
11-19 7.18
11-20 9.82
11-21 9.25
11-22 9.78
11-23 9.32
11-24 9.12
11-25 8.98
11-26 8.56
11-27 9.97
11-28 10.81
11-29 11.29
11-30 11.37
12-01 11.29
12-02 11.63
12-03 12.08
12-04 10.8
12-05 11.33
12-06 11.83
12-07 11.73
12-08 12.94
12-09 17.48
12-10 19.25
12-11 20.99
12-12 24.58
12-13 21.08
12-14 19.11
12-15 17.61
12-16 20.25
12-17 22.02
12-18 23.08
12-19 19.38
12-20 18.72
12-21 22.55
12-22 23.63
12-23 23.61
12-24 24.15
12-25 24.48
12-26 20.57
12-27 24.66
12-28 20.12
12-29 23.23
12-30 23.13
12-31 22.1

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index