Overview Realtime Historical Map View
Tornado Watch
2026-09-15T00:00:00-05:00

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 669 IN EFFECT UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 17 COUNTIES IN CENTRAL IOWA BOONE DALLAS POLK IN SOUTH CENTRAL IOWA CLARKE MADISON RINGGOLD UNION WARREN IN SOUTHWEST IOWA ADAIR ADAMS CASS TAYLOR IN WEST CENTRAL IOWA AUDUBON CARROLL CRAWFORD GREENE GUTHRIE THIS INCLUDES THE CITIES OF ADAIR, ADEL, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BOONE, CARLISLE, CARROLL, CASEY, CORNING, CRESTON, DENISON, DES MOINES, EARLHAM, EXIRA, FONTANELLE, GREENFIELD, GUTHRIE CENTER, INDIANOLA, JEFFERSON, LENOX, MOUNT AYR, NEW MARKET, NORWALK, OSCEOLA, PANORA, PERRY, STUART, WAUKEE, AND WINTERSET. * PRIMARY THREATS INCLUDE... A COUPLE TORNADOES POSSIBLE. SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 80 MPH LIKELY. SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 40% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 20% PROB OF 10 OR MORE SEVERE WIND EVENTS : 60% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 60% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : >95% MEAN STORM MOTION /MPH/ : NE 35

Fourmile Creek Near Ankeny, Ia Ds1 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 37.32
01-02 35.98
01-03 31.7
01-04 29.2
01-05 28.85
01-06 27.85
01-07 27.3
01-08 41.82
01-09 56.63
01-10 40.75
01-11 50.23
01-12 41.98
01-13 37.08
01-14 31.1
01-15 30.67
01-16 27.1
01-17 29.38
01-18 59.9
01-19 18.23
01-20 25.07
01-21 21.53
01-22 10.4
01-23 9.83
01-24 10.13
01-25 9.9
01-26 9.0
01-27 10.35
01-28 16.67
01-29 21.33
01-30 21.0
01-31 28.6
02-01 33.0
02-02 32.77
02-03 28.43
02-04 20.83
02-05 21.2
02-06 18.67
02-07 18.53
02-08 25.67
02-09 18.33
02-10 30.67
02-11 27.33
02-12 19.8
02-13 18.0
02-14 18.67
02-15 24.5
02-16 20.67
02-17 28.53
02-18 107.27
02-19 9.5
02-20 10.1
02-21 14.5
02-22 11.3
02-23 10.9
02-24 34.5
02-25 29.6
02-26 24.47
02-27 24.87
02-28 24.67
02-29 31.5
03-01 23.13
03-02 20.6
03-03 18.87
03-04 18.4
03-05 18.02
03-06 18.58
03-07 18.1
03-08 27.18
03-09 23.87
03-10 61.32
03-11 53.51
03-12 35.84
03-13 28.4
03-14 26.39
03-15 37.35
03-16 77.5
03-17 64.32
03-18 51.36
03-19 53.82
03-20 82.33
03-21 59.52
03-22 32.43
03-23 45.29
03-24 49.75
03-25 53.5
03-26 52.62
03-27 49.07
03-28 42.37
03-29 36.46
03-30 59.62
03-31 69.59
04-01 44.32
04-02 41.71
04-03 61.75
04-04 75.65
04-05 59.76
04-06 50.75
04-07 40.2
04-08 46.07
04-09 34.63
04-10 75.11
04-11 49.59
04-12 43.34
04-13 59.21
04-14 50.97
04-15 142.75
04-16 97.81
04-17 64.4
04-18 105.2
04-19 69.04
04-20 63.5
04-21 69.41
04-22 52.57
04-23 197.13
04-24 124.35
04-25 85.44
04-26 71.89
04-27 56.76
04-28 78.92
04-29 80.01
04-30 84.54
05-01 95.54
05-02 74.88
05-03 94.86
05-04 106.66
05-05 110.54
05-06 105.3
05-07 79.15
05-08 70.57
05-09 106.25
05-10 79.73
05-11 73.21
05-12 65.24
05-13 57.23
05-14 49.76
05-15 54.7
05-16 53.13
05-17 62.92
05-18 62.58
05-19 97.86
05-20 138.63
05-21 153.82
05-22 137.36
05-23 91.95
05-24 195.32
05-25 131.71
05-26 174.91
05-27 196.27
05-28 156.69
05-29 155.81
05-30 196.25
05-31 94.66
06-01 78.19
06-02 90.36
06-03 67.87
06-04 63.84
06-05 58.86
06-06 83.34
06-07 71.51
06-08 70.61
06-09 50.89
06-10 89.97
06-11 75.83
06-12 101.64
06-13 56.09
06-14 47.16
06-15 179.92
06-16 120.91
06-17 76.5
06-18 90.84
06-19 72.89
06-20 98.11
06-21 103.11
06-22 73.97
06-23 179.48
06-24 64.25
06-25 143.61
06-26 142.54
06-27 174.16
06-28 128.4
06-29 101.12
06-30 67.25
07-01 183.07
07-02 145.2
07-03 333.55
07-04 231.93
07-05 169.69
07-06 186.23
07-07 113.96
07-08 101.66
07-09 74.62
07-10 58.67
07-11 51.94
07-12 76.91
07-13 64.67
07-14 48.79
07-15 68.48
07-16 46.76
07-17 41.73
07-18 38.53
07-19 41.84
07-20 61.05
07-21 169.13
07-22 66.9
07-23 62.57
07-24 39.72
07-25 49.12
07-26 35.22
07-27 27.99
07-28 27.33
07-29 50.3
07-30 40.77
07-31 65.36
08-01 40.39
08-02 24.68
08-03 20.18
08-04 16.54
08-05 15.69
08-06 18.78
08-07 22.8
08-08 15.1
08-09 11.49
08-10 10.84
08-11 40.0
08-12 52.91
08-13 42.39
08-14 54.06
08-15 55.23
08-16 37.83
08-17 27.41
08-18 23.54
08-19 19.78
08-20 41.66
08-21 65.4
08-22 21.37
08-23 25.46
08-24 20.78
08-25 16.77
08-26 16.22
08-27 16.07
08-28 24.21
08-29 27.83
08-30 29.51
08-31 34.4
09-01 67.2
09-02 97.51
09-03 78.84
09-04 213.48
09-05 64.74
09-06 103.58
09-07 65.22
09-08 55.38
09-09 73.5
09-10 76.46
09-11 49.4
09-12 36.48
09-13 28.94
09-14 24.61
09-15 18.81
09-16 49.8
09-17 56.12
09-18 46.8
09-19 45.48
09-20 37.43
09-21 36.53
09-22 46.85
09-23 28.54
09-24 28.95
09-25 33.11
09-26 61.27
09-27 34.2
09-28 29.9
09-29 24.19
09-30 32.79
10-01 33.26
10-02 87.77
10-03 36.9
10-04 27.09
10-05 26.77
10-06 32.85
10-07 39.33
10-08 44.13
10-09 82.19
10-10 97.9
10-11 59.35
10-12 38.47
10-13 31.57
10-14 43.5
10-15 51.46
10-16 30.51
10-17 26.71
10-18 23.36
10-19 20.61
10-20 18.79
10-21 31.22
10-22 41.78
10-23 26.19
10-24 22.59
10-25 45.69
10-26 23.14
10-27 18.65
10-28 22.61
10-29 38.51
10-30 24.44
10-31 20.31
11-01 16.48
11-02 13.64
11-03 16.21
11-04 19.65
11-05 12.94
11-06 23.67
11-07 18.02
11-08 16.32
11-09 17.86
11-10 15.3
11-11 33.98
11-12 26.77
11-13 16.49
11-14 14.53
11-15 12.97
11-16 13.3
11-17 11.52
11-18 10.05
11-19 12.83
11-20 9.95
11-21 17.29
11-22 12.43
11-23 15.36
11-24 16.56
11-25 16.97
11-26 17.58
11-27 40.26
11-28 15.74
11-29 23.07
11-30 22.02
12-01 29.52
12-02 41.12
12-03 34.37
12-04 32.68
12-05 27.12
12-06 25.53
12-07 24.03
12-08 23.82
12-09 23.06
12-10 20.08
12-11 20.31
12-12 21.42
12-13 28.04
12-14 15.27
12-15 16.91
12-16 18.94
12-17 62.26
12-18 60.78
12-19 50.52
12-20 14.98
12-21 17.96
12-22 35.27
12-23 35.53
12-24 71.68
12-25 49.7
12-26 41.3
12-27 38.58
12-28 35.02
12-29 37.95
12-30 43.42
12-31 42.3

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index