Overview Realtime Historical Map View
Heat Advisory
2026-09-20T19:00:00-05:00

* WHAT...Daily peak heat index values of 100 to 106. * WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...Until 7 PM CDT /8 PM EDT/ Sunday. * IMPACTS...Record to near record hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...The Heat Advisory has been extended thru Sunday for the entire Quad State Region. Although heat index values will only be near 100, the prolonged period of late season hot temperatures and high humidity will continue to elevate heat-related health impacts.

Patoka River Near Princeton, Ind. 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 1708.92
01-02 1808.33
01-03 1785.58
01-04 1893.5
01-05 1874.5
01-06 1853.25
01-07 1768.58
01-08 1689.42
01-09 1626.08
01-10 1764.08
01-11 1907.08
01-12 2043.25
01-13 2159.42
01-14 2174.67
01-15 2154.33
01-16 2149.25
01-17 2042.0
01-18 2025.08
01-19 2118.46
01-20 2129.08
01-21 2032.08
01-22 1967.46
01-23 2215.45
01-24 2012.17
01-25 1942.33
01-26 2116.36
01-27 2081.82
01-28 2000.0
01-29 1970.0
01-30 1869.23
01-31 1920.0
02-01 1882.31
02-02 1856.92
02-03 1892.31
02-04 1891.54
02-05 1860.0
02-06 1805.25
02-07 1780.25
02-08 1779.83
02-09 1865.08
02-10 1812.0
02-11 1808.83
02-12 1706.71
02-13 1706.71
02-14 1644.43
02-15 1610.71
02-16 1716.5
02-17 1714.38
02-18 1814.77
02-19 1975.46
02-20 1934.36
02-21 1947.5
02-22 1934.93
02-23 1975.21
02-24 2029.14
02-25 2067.38
02-26 2092.08
02-27 2388.43
02-28 2452.0
02-29 1586.0
03-01 2509.79
03-02 2476.5
03-03 2510.93
03-04 2560.5
03-05 2574.21
03-06 2512.21
03-07 2442.0
03-08 2424.71
03-09 2387.07
03-10 2444.71
03-11 2500.21
03-12 2509.29
03-13 2514.36
03-14 2568.93
03-15 2586.14
03-16 2564.29
03-17 2541.43
03-18 2635.57
03-19 2554.4
03-20 2519.64
03-21 2471.67
03-22 2292.21
03-23 2384.27
03-24 2338.0
03-25 2456.93
03-26 2354.8
03-27 2326.6
03-28 2328.07
03-29 2287.67
03-30 2283.0
03-31 2281.36
04-01 2239.73
04-02 2200.93
04-03 2303.07
04-04 2404.27
04-05 2451.07
04-06 2628.4
04-07 2699.93
04-08 2925.13
04-09 3142.29
04-10 3183.47
04-11 3208.2
04-12 3281.86
04-13 3072.5
04-14 2946.07
04-15 2701.23
04-16 2484.31
04-17 2318.69
04-18 2183.92
04-19 2108.62
04-20 1984.08
04-21 1813.93
04-22 1727.79
04-23 1659.64
04-24 1557.92
04-25 1452.75
04-26 1469.69
04-27 1484.15
04-28 1480.08
04-29 1549.54
04-30 1876.08
05-01 1879.77
05-02 1711.33
05-03 1638.42
05-04 1530.31
05-05 2328.86
05-06 2440.71
05-07 2444.5
05-08 1545.46
05-09 2145.71
05-10 2093.62
05-11 1910.29
05-12 1736.57
05-13 1563.21
05-14 1171.85
05-15 1652.29
05-16 1591.64
05-17 1583.43
05-18 1568.53
05-19 1577.8
05-20 1677.36
05-21 1567.53
05-22 1560.33
05-23 1513.0
05-24 1437.6
05-25 1348.8
05-26 1307.67
05-27 1291.8
05-28 1172.27
05-29 1041.33
05-30 1107.67
05-31 1110.0
06-01 1224.2
06-02 1253.07
06-03 1289.8
06-04 1303.8
06-05 1224.14
06-06 1100.64
06-07 952.07
06-08 910.8
06-09 761.87
06-10 636.53
06-11 784.93
06-12 824.71
06-13 757.14
06-14 685.36
06-15 680.2
06-16 686.07
06-17 869.07
06-18 860.67
06-19 913.93
06-20 1108.5
06-21 1128.64
06-22 1215.71
06-23 1318.79
06-24 1474.21
06-25 1566.3
06-26 1622.53
06-27 1886.42
06-28 1842.56
06-29 1785.25
06-30 2030.85
07-01 2142.69
07-02 2237.23
07-03 2140.15
07-04 1930.36
07-05 1834.73
07-06 1710.27
07-07 1512.0
07-08 1382.86
07-09 1334.5
07-10 1298.73
07-11 1277.6
07-12 1170.87
07-13 1148.07
07-14 1026.6
07-15 912.6
07-16 867.36
07-17 970.87
07-18 904.6
07-19 853.07
07-20 937.73
07-21 830.93
07-22 729.4
07-23 622.2
07-24 597.33
07-25 580.8
07-26 597.2
07-27 677.87
07-28 765.07
07-29 780.4
07-30 762.0
07-31 811.2
08-01 651.23
08-02 717.73
08-03 687.07
08-04 669.53
08-05 625.93
08-06 552.87
08-07 554.57
08-08 538.64
08-09 508.26
08-10 537.07
08-11 476.4
08-12 416.4
08-13 359.87
08-14 435.27
08-15 429.29
08-16 459.07
08-17 443.41
08-18 463.82
08-19 424.86
08-20 411.69
08-21 394.3
08-22 443.06
08-23 355.49
08-24 351.0
08-25 365.71
08-26 356.48
08-27 422.04
08-28 426.95
08-29 401.15
08-30 357.81
08-31 297.44
09-01 394.93
09-02 434.8
09-03 448.53
09-04 442.53
09-05 397.01
09-06 358.59
09-07 321.39
09-08 361.7
09-09 460.87
09-10 421.31
09-11 422.23
09-12 577.95
09-13 496.27
09-14 487.71
09-15 483.64
09-16 481.05
09-17 483.63
09-18 463.41
09-19 450.94
09-20 417.39
09-21 376.45
09-22 312.54
09-23 287.65
09-24 304.62
09-25 355.36
09-26 574.65
09-27 634.9
09-28 590.39
09-29 561.07
09-30 534.77
10-01 380.31
10-02 309.15
10-03 263.0
10-04 267.77
10-05 288.64
10-06 329.07
10-07 450.14
10-08 454.43
10-09 436.0
10-10 410.29
10-11 374.71
10-12 390.07
10-13 372.09
10-14 358.16
10-15 399.89
10-16 379.62
10-17 375.43
10-18 397.83
10-19 418.43
10-20 389.94
10-21 352.95
10-22 326.74
10-23 295.67
10-24 268.51
10-25 261.5
10-26 269.93
10-27 369.21
10-28 356.5
10-29 372.64
10-30 515.93
10-31 512.29
11-01 575.5
11-02 703.13
11-03 695.38
11-04 682.52
11-05 646.51
11-06 645.77
11-07 656.23
11-08 682.15
11-09 650.85
11-10 597.15
11-11 559.54
11-12 505.92
11-13 441.46
11-14 404.43
11-15 384.71
11-16 459.64
11-17 508.29
11-18 643.92
11-19 655.92
11-20 644.85
11-21 673.29
11-22 651.15
11-23 660.71
11-24 746.23
11-25 767.08
11-26 833.0
11-27 831.57
11-28 869.85
11-29 915.07
11-30 904.5
12-01 971.21
12-02 1011.43
12-03 1011.29
12-04 1028.29
12-05 1164.77
12-06 1440.83
12-07 1337.71
12-08 1356.71
12-09 1365.21
12-10 1393.93
12-11 1476.14
12-12 1452.0
12-13 1428.21
12-14 1418.0
12-15 1481.08
12-16 1468.77
12-17 1447.69
12-18 1422.69
12-19 1402.46
12-20 1391.92
12-21 1373.92
12-22 1573.38
12-23 1505.38
12-24 1583.23
12-25 1626.23
12-26 1624.85
12-27 1636.33
12-28 1677.0
12-29 1575.82
12-30 1698.67
12-31 1680.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index