Overview Realtime Historical Map View
Extreme Heat Warning
2026-07-13T21:00:00-05:00

* WHAT...Dangerously hot conditions with temperatures up to 100. * WHERE...Koochiching, Itasca, Central and North St. Louis, Cook and Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation and the Bois Forte Band, Nett Lake, Lake Vermilion and, Deer Creek areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Big Fork River At Big Falls, Mn Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
03-16 346.0
03-17 341.0
03-18 370.0
03-20 1100.0
03-21 1130.0
03-22 1280.0
03-23 985.0
03-24 949.0
03-25 881.0
03-26 877.5
03-27 986.5
03-28 874.5
03-29 745.0
03-30 955.0
03-31 737.0
04-01 1139.25
04-02 1254.25
04-03 1698.2
04-04 1839.2
04-05 1696.0
04-06 1255.0
04-07 1155.71
04-08 1184.83
04-09 1318.83
04-10 2292.57
04-11 2537.83
04-12 3074.14
04-13 2433.43
04-14 2449.57
04-15 2638.67
04-16 2404.0
04-17 2265.67
04-18 2788.78
04-19 2787.89
04-20 2861.22
04-21 2617.36
04-22 2564.25
04-23 2520.92
04-24 2624.75
04-25 2957.5
04-26 2953.14
04-27 2834.86
04-28 2656.14
04-29 2590.79
04-30 2803.77
05-01 2780.93
05-02 3216.36
05-03 3305.71
05-04 3075.33
05-05 2792.0
05-06 2536.0
05-07 2354.67
05-08 2285.79
05-09 2207.4
05-10 2241.29
05-11 2186.33
05-12 2108.33
05-13 2047.0
05-14 2153.5
05-15 2083.21
05-16 1987.14
05-17 1873.71
05-18 1710.2
05-19 1709.73
05-20 1779.57
05-21 1750.27
05-22 1703.47
05-23 1613.53
05-24 1522.0
05-25 1452.27
05-26 1405.4
05-27 1345.33
05-28 1279.0
05-29 1250.8
05-30 1224.2
05-31 1173.07
06-01 1311.93
06-02 1499.21
06-03 1498.0
06-04 1472.87
06-05 1449.5
06-06 1331.21
06-07 1230.86
06-08 1088.47
06-09 1033.73
06-10 1003.4
06-11 968.2
06-12 873.86
06-13 1250.43
06-14 1709.36
06-15 1657.13
06-16 1550.33
06-17 1456.53
06-18 1444.4
06-19 1230.21
06-20 1073.79
06-21 977.93
06-22 883.57
06-23 842.36
06-24 824.71
06-25 777.79
06-26 735.64
06-27 691.21
06-28 729.45
06-29 801.81
06-30 844.38
07-01 809.52
07-02 786.64
07-03 718.09
07-04 713.79
07-05 668.27
07-06 627.51
07-07 575.31
07-08 516.86
07-09 491.78
07-10 543.78
07-11 502.05
07-12 515.76
07-13 610.59
07-14 593.01
07-15 546.36
07-16 592.09
07-17 570.79
07-18 548.39
07-19 523.96
07-20 490.65
07-21 441.22
07-22 414.36
07-23 419.51
07-24 426.02
07-25 497.16
07-26 473.79
07-27 462.17
07-28 428.4
07-29 384.91
07-30 350.06
07-31 313.66
08-01 291.43
08-02 273.62
08-03 252.44
08-04 262.99
08-05 288.19
08-06 295.06
08-07 286.61
08-08 260.86
08-09 245.92
08-10 236.4
08-11 243.6
08-12 256.11
08-13 243.46
08-14 245.42
08-15 261.81
08-16 412.97
08-17 399.29
08-18 403.32
08-19 365.96
08-20 328.49
08-21 299.12
08-22 286.78
08-23 245.29
08-24 224.68
08-25 229.58
08-26 229.74
08-27 221.68
08-28 215.3
08-29 221.71
08-30 290.3
08-31 296.88
09-01 271.67
09-02 266.13
09-03 261.79
09-04 255.21
09-05 248.63
09-06 248.48
09-07 247.05
09-08 268.87
09-09 297.84
09-10 307.02
09-11 288.34
09-12 270.63
09-13 263.06
09-14 257.06
09-15 267.35
09-16 277.05
09-17 284.46
09-18 289.26
09-19 289.54
09-20 287.67
09-21 288.14
09-22 314.32
09-23 318.73
09-24 313.54
09-25 311.03
09-26 318.81
09-27 323.04
09-28 326.46
09-29 331.46
09-30 337.51
10-01 304.69
10-02 294.58
10-03 299.38
10-04 323.19
10-05 391.32
10-06 436.39
10-07 474.25
10-08 488.75
10-09 494.64
10-10 486.01
10-11 509.46
10-12 572.43
10-13 606.29
10-14 617.86
10-15 646.38
10-16 491.15
10-17 602.64
10-18 581.64
10-19 558.07
10-20 562.15
10-21 438.69
10-22 508.21
10-23 587.57
10-24 631.86
10-25 635.21
10-26 625.29
10-27 612.29
10-28 602.14
10-29 608.57
10-30 608.29
10-31 610.93
11-01 600.64
11-02 588.69
11-03 573.14
11-04 551.79
11-05 529.21
11-06 470.54
11-07 483.75
11-08 491.5
11-09 489.0
11-10 486.67
11-11 488.83
11-12 524.0
11-13 538.56
11-14 495.88
11-15 483.88
11-16 474.13
11-17 480.86
11-18 433.0
11-19 377.0
11-20 534.75
11-21 947.4
11-22 1126.5
11-23 1022.33
11-24 1100.5
11-25 1089.0
11-26 1024.5
11-27 931.0
11-28 1040.0
11-29 977.33
11-30 1206.67
12-01 1512.5
12-02 1740.0
12-03 2080.0
12-04 1910.0
12-05 1700.0
12-07 1450.0
12-08 1040.0
12-09 907.0
12-10 946.0
12-11 977.0
12-12 1050.0
12-13 1180.0
12-17 1090.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index