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Fire Weather Watch
2026-08-18T22:00:00-07:00

...BREEZY WESTERLY WINDS AND LOW RELATIVE HUMIDITY TUESDAY... .A weather system will bring breezy westerly winds through the Cascade gaps Tuesday afternoon and evening. Coupled with low relative humidity, this may lead to critical fire weather conditions, especially across the Lower Columbia Basin of Oregon. The National Weather Service in Pendleton has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Tuesday afternoon through Tuesday evening. * AFFECTED AREA...Fire Weather Zone 691 Lower Columbia Basin of Oregon. * TIMING...From Tuesday afternoon through Tuesday evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...Minimum RH of 10 to 15 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

Umatilla River Near Umatilla, 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
01-01 536.17
01-02 490.73
01-03 462.91
01-04 435.08
01-05 458.75
01-06 519.67
01-07 605.0
01-08 643.0
01-09 754.09
01-10 614.33
01-11 555.25
01-12 496.42
01-13 476.5
01-14 656.08
01-15 676.0
01-16 641.67
01-17 597.92
01-18 554.42
01-19 633.33
01-20 732.33
01-21 746.18
01-22 987.17
01-23 812.64
01-24 839.77
01-25 866.17
01-26 880.25
01-27 795.15
01-28 838.31
01-29 1001.15
01-30 969.43
01-31 954.43
02-01 923.15
02-02 859.23
02-03 850.86
02-04 907.07
02-05 882.14
02-06 1327.42
02-07 1653.75
02-08 2150.64
02-09 1155.69
02-10 867.67
02-11 914.77
02-12 844.92
02-13 825.0
02-14 826.38
02-15 943.21
02-16 901.86
02-17 793.54
02-18 739.08
02-19 768.86
02-20 775.69
02-21 800.62
02-22 668.69
02-23 724.36
02-24 933.07
02-25 1124.83
02-26 995.0
02-27 829.14
02-28 754.0
02-29 764.0
03-01 682.85
03-02 679.5
03-03 776.5
03-04 895.36
03-05 958.07
03-06 934.93
03-07 1137.5
03-08 998.5
03-09 842.0
03-10 818.14
03-11 1065.21
03-12 1144.79
03-13 902.57
03-14 1027.29
03-15 1282.93
03-16 1335.57
03-17 1303.71
03-18 1274.43
03-19 1411.6
03-20 1380.57
03-21 1254.33
03-22 1299.71
03-23 1372.13
03-24 1384.13
03-25 1460.07
03-26 1474.73
03-27 1416.87
03-28 1400.4
03-29 1378.6
03-30 1520.4
03-31 1718.29
04-01 1320.0
04-02 1291.43
04-03 1239.93
04-04 1296.67
04-05 1245.21
04-06 1226.0
04-07 1268.47
04-08 1347.87
04-09 1251.46
04-10 1849.47
04-11 1955.13
04-12 1979.5
04-13 2034.5
04-14 1999.07
04-15 1885.08
04-16 1540.38
04-17 1527.42
04-18 1441.46
04-19 1382.15
04-20 1463.85
04-21 1828.29
04-22 1599.07
04-23 1526.36
04-24 1808.14
04-25 1712.85
04-26 1664.93
04-27 1616.0
04-28 1598.07
04-29 1524.79
04-30 1099.85
05-01 1237.2
05-02 1128.71
05-03 1074.57
05-04 1050.73
05-05 1046.53
05-06 1003.6
05-07 1001.73
05-08 1118.93
05-09 983.87
05-10 877.93
05-11 751.07
05-12 670.93
05-13 652.53
05-14 639.46
05-15 695.38
05-16 839.93
05-17 996.5
05-18 1040.73
05-19 849.4
05-20 716.36
05-21 998.57
05-22 1432.87
05-23 935.6
05-24 814.27
05-25 632.4
05-26 561.67
05-27 618.07
05-28 586.4
05-29 547.6
05-30 757.33
05-31 836.13
06-01 747.87
06-02 416.71
06-03 646.73
06-04 680.47
06-05 767.71
06-06 732.0
06-07 699.93
06-08 578.57
06-09 480.53
06-10 440.07
06-11 408.2
06-12 429.29
06-13 484.86
06-14 660.64
06-15 599.8
06-16 459.2
06-17 371.6
06-18 321.07
06-19 306.0
06-20 277.5
06-21 241.43
06-22 230.07
06-23 204.57
06-24 188.79
06-25 184.36
06-26 176.29
06-27 172.68
06-28 173.42
06-29 158.74
06-30 152.98
07-01 145.18
07-02 135.82
07-03 133.77
07-04 122.35
07-05 115.35
07-06 110.55
07-07 106.73
07-08 102.75
07-09 102.97
07-10 99.35
07-11 101.33
07-12 100.08
07-13 91.61
07-14 90.24
07-15 91.0
07-16 81.64
07-17 83.11
07-18 84.95
07-19 78.5
07-20 77.29
07-21 78.73
07-22 79.39
07-23 79.57
07-24 81.18
07-25 81.02
07-26 84.8
07-27 82.4
07-28 83.29
07-29 83.87
07-30 86.16
07-31 82.95
08-01 74.43
08-02 86.63
08-03 92.39
08-04 89.53
08-05 92.69
08-06 92.28
08-07 95.16
08-08 96.91
08-09 98.09
08-10 95.74
08-11 92.13
08-12 89.46
08-13 94.11
08-14 93.71
08-15 98.91
08-16 94.93
08-17 97.5
08-18 97.75
08-19 100.32
08-20 97.58
08-21 96.15
08-22 96.38
08-23 96.89
08-24 107.63
08-25 98.31
08-26 99.44
08-27 101.88
08-28 109.22
08-29 102.85
08-30 99.75
08-31 102.05
09-01 98.2
09-02 98.73
09-03 105.03
09-04 103.61
09-05 109.51
09-06 109.46
09-07 122.31
09-08 120.91
09-09 117.84
09-10 118.64
09-11 127.48
09-12 124.76
09-13 126.04
09-14 131.59
09-15 134.29
09-16 138.23
09-17 141.71
09-18 142.29
09-19 145.79
09-20 150.86
09-21 160.92
09-22 161.43
09-23 166.79
09-24 171.07
09-25 172.29
09-26 181.43
09-27 178.0
09-28 183.29
09-29 185.93
09-30 199.15
10-01 204.5
10-02 210.0
10-03 214.08
10-04 213.77
10-05 211.43
10-06 211.57
10-07 207.14
10-08 208.57
10-09 211.14
10-10 211.86
10-11 220.79
10-12 220.64
10-13 220.71
10-14 223.64
10-15 228.38
10-16 233.46
10-17 231.07
10-18 234.79
10-19 230.23
10-20 233.08
10-21 227.0
10-22 234.23
10-23 236.54
10-24 260.77
10-25 370.08
10-26 247.83
10-27 252.38
10-28 277.0
10-29 234.9
10-30 253.36
10-31 282.62
11-01 283.33
11-02 319.29
11-03 307.23
11-04 297.71
11-05 311.79
11-06 359.17
11-07 368.08
11-08 352.08
11-09 362.17
11-10 354.25
11-11 336.42
11-12 331.25
11-13 317.0
11-14 315.57
11-15 322.38
11-16 313.0
11-17 311.54
11-18 310.08
11-19 296.0
11-20 283.14
11-21 272.43
11-22 293.69
11-23 276.92
11-24 243.08
11-25 231.15
11-26 298.23
11-27 411.33
11-28 317.64
11-29 289.07
11-30 280.86
12-01 269.93
12-02 261.29
12-03 270.23
12-04 387.29
12-05 363.21
12-06 368.75
12-07 461.58
12-08 395.15
12-09 472.92
12-10 435.0
12-11 606.38
12-12 593.62
12-13 498.77
12-14 518.58
12-15 440.31
12-16 404.54
12-17 357.08
12-18 325.0
12-19 324.46
12-20 718.0
12-21 576.46
12-22 939.08
12-23 798.08
12-24 658.77
12-25 612.08
12-26 579.27
12-27 487.58
12-28 569.45
12-29 526.33
12-30 454.45
12-31 411.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index