Overview Realtime Historical Map View
Heat Advisory
2026-08-05T23:00:00-07:00

* WHAT...Afternoon high temperatures of 93 to 98 degrees and morning low temperatures of 60 to 65 degrees expected. * WHERE...Portions of northwest and west central Oregon and southwest Washington. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Wildfire smoke continues west of the Cascades over northwest Oregon and southwest Washington, which may limit high temperatures by approximately 1-3 degrees. However, temperatures will still be hot enough to bring an increased risk of heat-related illnesses even if temperatures are dampened a few degrees from smoke.

Alsea River Near Tidewater, Or 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 2569.67
01-02 2365.27
01-03 2424.92
01-04 3162.18
01-05 2926.42
01-06 2866.58
01-07 3108.25
01-08 3191.83
01-09 2866.0
01-10 3135.45
01-11 2851.67
01-12 2875.83
01-13 4864.55
01-14 3721.36
01-15 2926.0
01-16 2890.91
01-17 2612.62
01-18 3181.67
01-19 5398.46
01-20 5069.0
01-21 3636.58
01-22 3317.92
01-23 3387.33
01-24 3194.38
01-25 3734.15
01-26 3138.33
01-27 2769.08
01-28 3190.15
01-29 3257.38
01-30 2614.29
01-31 2315.14
02-01 2190.0
02-02 2098.93
02-03 1907.93
02-04 1827.29
02-05 1624.86
02-06 1673.92
02-07 2138.38
02-08 2236.67
02-09 1935.86
02-10 2303.14
02-11 2004.46
02-12 2180.86
02-13 2805.86
02-14 2312.14
02-15 2470.64
02-16 2750.0
02-17 2637.85
02-18 2664.31
02-19 2753.0
02-20 2486.21
02-21 2292.79
02-22 2164.36
02-23 2314.54
02-24 3210.29
02-25 3187.5
02-26 2582.69
02-27 2367.64
02-28 2147.93
02-29 2045.75
03-01 3089.07
03-02 2975.57
03-03 2683.14
03-04 2458.21
03-05 2230.21
03-06 2618.86
03-07 2695.93
03-08 2295.07
03-09 2082.5
03-10 2330.29
03-11 2350.64
03-12 2276.36
03-13 2790.29
03-14 3377.93
03-15 3147.57
03-16 3832.21
03-17 3279.21
03-18 2696.21
03-19 2367.4
03-20 2039.21
03-21 2229.53
03-22 2860.0
03-23 2445.8
03-24 2294.0
03-25 2362.8
03-26 2135.87
03-27 1984.13
03-28 2111.67
03-29 2638.73
03-30 2819.0
03-31 3123.14
04-01 2681.6
04-02 2411.93
04-03 2131.67
04-04 1859.33
04-05 1796.6
04-06 1717.43
04-07 1904.47
04-08 2708.4
04-09 2009.15
04-10 2077.33
04-11 2068.4
04-12 2183.07
04-13 2039.07
04-14 1954.5
04-15 1822.69
04-16 1874.77
04-17 1764.75
04-18 1650.62
04-19 1575.23
04-20 1612.92
04-21 1572.21
04-22 1546.14
04-23 1422.64
04-24 1386.29
04-25 1623.31
04-26 1393.21
04-27 1294.79
04-28 1262.71
04-29 1153.57
04-30 1082.0
05-01 1127.93
05-02 980.5
05-03 1093.5
05-04 1231.27
05-05 1149.47
05-06 1076.0
05-07 1198.4
05-08 1152.07
05-09 1054.0
05-10 1012.79
05-11 937.67
05-12 871.6
05-13 918.33
05-14 907.0
05-15 1111.0
05-16 1024.0
05-17 932.93
05-18 818.0
05-19 780.13
05-20 751.43
05-21 678.47
05-22 679.67
05-23 671.2
05-24 624.0
05-25 606.07
05-26 584.47
05-27 561.0
05-28 592.53
05-29 603.73
05-30 603.6
05-31 575.93
06-01 533.07
06-02 502.47
06-03 478.07
06-04 456.67
06-05 486.07
06-06 485.71
06-07 465.14
06-08 433.21
06-09 445.53
06-10 456.93
06-11 457.67
06-12 460.0
06-13 455.93
06-14 482.07
06-15 423.27
06-16 409.2
06-17 399.8
06-18 376.6
06-19 364.14
06-20 352.14
06-21 335.5
06-22 325.21
06-23 311.71
06-24 300.07
06-25 288.71
06-26 294.57
06-27 303.79
06-28 302.64
06-29 293.5
06-30 269.86
07-01 258.21
07-02 249.93
07-03 238.36
07-04 227.38
07-05 217.07
07-06 212.13
07-07 210.93
07-08 206.36
07-09 200.57
07-10 205.0
07-11 215.0
07-12 197.0
07-13 184.75
07-14 177.33
07-15 171.93
07-16 168.48
07-17 169.63
07-18 169.19
07-19 161.49
07-20 157.77
07-21 157.29
07-22 157.53
07-23 154.13
07-24 152.54
07-25 147.87
07-26 141.62
07-27 137.3
07-28 133.39
07-29 130.23
07-30 131.09
07-31 125.46
08-01 117.62
08-02 119.09
08-03 119.25
08-04 117.36
08-05 118.68
08-06 116.01
08-07 113.97
08-08 117.54
08-09 117.36
08-10 115.98
08-11 111.27
08-12 112.78
08-13 106.17
08-14 105.09
08-15 104.03
08-16 102.88
08-17 102.38
08-18 102.77
08-19 99.12
08-20 98.22
08-21 97.02
08-22 95.68
08-23 93.58
08-24 93.88
08-25 92.58
08-26 89.94
08-27 89.31
08-28 88.61
08-29 87.11
08-30 88.13
08-31 94.91
09-01 93.18
09-02 90.06
09-03 87.66
09-04 85.77
09-05 83.44
09-06 89.78
09-07 98.2
09-08 85.89
09-09 86.19
09-10 95.54
09-11 100.09
09-12 83.84
09-13 77.38
09-14 79.46
09-15 80.7
09-16 83.97
09-17 89.06
09-18 104.86
09-19 139.3
09-20 126.52
09-21 114.56
09-22 101.83
09-23 98.1
09-24 107.69
09-25 131.29
09-26 147.65
09-27 131.97
09-28 121.43
09-29 388.42
09-30 766.18
10-01 433.59
10-02 325.15
10-03 278.25
10-04 236.86
10-05 192.64
10-06 240.75
10-07 183.46
10-08 190.63
10-09 173.85
10-10 150.64
10-11 179.28
10-12 270.45
10-13 237.98
10-14 681.39
10-15 480.28
10-16 626.72
10-17 566.43
10-18 640.96
10-19 562.27
10-20 513.98
10-21 483.39
10-22 588.73
10-23 783.15
10-24 508.38
10-25 464.29
10-26 491.77
10-27 697.79
10-28 668.15
10-29 641.64
10-30 574.21
10-31 500.92
11-01 659.07
11-02 748.54
11-03 624.38
11-04 510.21
11-05 889.36
11-06 936.85
11-07 1186.77
11-08 1101.62
11-09 843.77
11-10 837.62
11-11 815.15
11-12 900.15
11-13 861.31
11-14 1192.07
11-15 1278.76
11-16 1442.61
11-17 1424.68
11-18 1269.3
11-19 1554.95
11-20 2874.48
11-21 1943.05
11-22 1740.92
11-23 1666.23
11-24 1612.69
11-25 2124.15
11-26 2025.71
11-27 1678.25
11-28 1489.08
11-29 1770.86
11-30 1462.29
12-01 1625.14
12-02 1604.57
12-03 1964.46
12-04 2542.86
12-05 2496.07
12-06 2053.54
12-07 2505.86
12-08 2920.93
12-09 1778.0
12-10 2787.93
12-11 3119.5
12-12 3426.07
12-13 3284.43
12-14 2297.83
12-15 1823.69
12-16 1725.75
12-17 2007.5
12-18 3625.5
12-19 4694.54
12-20 3893.0
12-21 6052.5
12-22 5246.42
12-23 3734.0
12-24 3386.69
12-25 3209.31
12-26 2982.75
12-27 2951.83
12-28 3388.55
12-29 3423.36
12-30 2964.27
12-31 3308.83

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index