Extreme rain in United States, 5 to 11 April 2021

Name: Extreme rain in United States, 5 to 11 April 2021
Start: 2021-04-05
End: 2021-04-11
Location: United States

Extreme rain in United States, 5 to 11 April 2021: 391 records at 347 stations, peak on 8 April 2021. Closed.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Key Facts

Extreme rain in United States, 5 to 11 April 2021 set or tied 391 station records at 347 stations.
It ran from 5 April 2021 to 11 April 2021 (7 days) and its peak day was 8 April 2021.
Status: closed.
Aledo set a daily record precipitation of 84.8 mm (3.3 in) on 11 April 2021.
The busiest day was 8 April 2021 with 123 records.
The oldest broken record in the ranked list had stood for 127 years.

Footprint

5 to 11 April 2021

The area covered by Extreme rain in United States, 5 to 11 April 2021 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Extreme rain in United States, 5 to 11 April 2021: stations that set records in the event
Station	Type	Value	Date
Aledo	Record daily precipitation	84.8 mm (3.3 in)	2021-04-11
Britton	Record daily precipitation	44.2 mm (1.7 in)	2021-04-08
Winnibigoshish Dam	Record daily precipitation	52.3 mm (2.1 in)	2021-04-09
Galva	Record daily precipitation	62.2 mm (2.4 in)	2021-04-11
Ft Madison	Record daily precipitation	45.0 mm (1.8 in)	2021-04-07
Willow Rsvr	Record daily precipitation	32.5 mm (1.3 in)	2021-04-07
Leeds	Record daily precipitation	85.3 mm (3.4 in)	2021-04-10
Burlington Muni AP	Record daily precipitation	60.7 mm (2.4 in)	2021-04-10
Fulton L&D #13	Record daily precipitation	72.4 mm (2.9 in)	2021-04-11
Columbia	Record daily precipitation	81.3 mm (3.2 in)	2021-04-10
Tupelo Rgnl AP	Record daily precipitation	74.4 mm (2.9 in)	2021-04-09
Thibodaux 4 SE	Record daily precipitation	76.2 mm (3.0 in)	2021-04-10
Herington	Record daily precipitation	39.4 mm (1.6 in)	2021-04-07
Milaca	Record daily precipitation	49.8 mm (2.0 in)	2021-04-07
Waskish 4NE	Record daily precipitation	25.4 mm (1.0 in)	2021-04-09
Morrison	Record daily precipitation	69.6 mm (2.7 in)	2021-04-11
Ellsworth	Record daily precipitation	37.1 mm (1.5 in)	2021-04-07
Edgemont 23 NNW	Record daily precipitation	35.6 mm (1.4 in)	2021-04-07
Aberdeen	Record daily precipitation	35.8 mm (1.4 in)	2021-04-07
Mt Carroll	Record daily precipitation	58.4 mm (2.3 in)	2021-04-11

Records per Day

Peak day 123

Records set or tied each day from 5 April 2021 to 11 April 2021. The most in one day was 123 on 8 April 2021.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 5 to 11 April 2021 ranked by margin
Tupelo Rgnl AP, 04-09	61.7 mm (2.4 in)
Aledo, 04-11	50.3 mm (2.0 in)
Fulton L&D #13, 04-11	44.5 mm (1.8 in)
Leeds, 04-10	42.4 mm (1.7 in)
Morrison, 04-11	42.4 mm (1.7 in)
Thibodaux 4 SE, 04-10	40.6 mm (1.6 in)
Columbia, 04-10	35.6 mm (1.4 in)
Winnibigoshish Dam, 04-09	29.4 mm (1.2 in)
Edgemont 23 NNW, 04-07	28.5 mm (1.1 in)
Burlington Muni AP, 04-10	26.4 mm (1.0 in)
Galva, 04-11	24.9 mm (1.0 in)
Herington, 04-07	23.9 mm (0.9 in)
Ft Madison, 04-07	19.6 mm (0.8 in)
Willow Rsvr, 04-07	19.3 mm (0.8 in)
Britton, 04-08	18.8 mm (0.7 in)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

391 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.

Margin against age of the broken record in Extreme rain in United States, 5 to 11 April 2021
Margin (mm)	Years the old record stood
50	47
29	52
19	126
25	99
20	104
42	84
45	26
19	70
26	67
36	102
41	126
62	46
42	8
24	79
12	102
16	68
12	106
29	28
12	99
15	86
23	83
12	127
11	108
25	108
36	11
16	70
10	118
18	79
6	102
9	125
20	44
16	59
29	2
30	28
9	116
4	96
33	40
55	66
31	40
8	115
27	20
8	124
50	19
10	116
4	108
39	66
16	70
16	102
37	76
6	102
18	60
41	68
29	14
10	96
17	31
10	70
12	108
9	108
5	126
5	108
121	0
33	66
16	60
3	125
2	107
3	99
3	124
38	8
38	8
15	59
23	40
3	123
15	59
3	96
3	104
19	56
10	92
25	40
17	64
11	70
2	100
2	99
20	7
1	116
2	96
1	96
11	84
29	63
23	68
1	96
3	80
36	23
12	64
12	67
11	70
1	63
21	64
24	26
50	52
2	84
1	92
36	62
25	66
32	12
6	70
5	68
28	66
17	72
8	43
26	8
3	79
3	70
6	59
21	11
14	16
2	79
3	83
9	59
29	8
22	16
1	86
21	28
25	63
22	62
23	26
12	40
6	58
1	79
28	39
11	52
2	70
40	46
15	47
5	54
1	71
25	2
47	6
13	52
8	66
17	40
16	35
20	66
9	43
15	66
39	30
27	46
15	40
15	40
30	12
18	16
49	0
4	60
25	26
4	70
43	30
12	40
21	28
29	46
4	54
13	20
7	52
8	56
45	30
16	46
46	19
6	59
16	20
15	52
8	47
26	19
4	64
16	26
13	23
21	28
40	39
11	64
2	59
9	28
39	30
12	28
2	56
7	42
5	46
14	36
5	52
3	52
2	59
12	36
7	52
37	19
8	46
8	32
16	52
8	60
2	64
9	15
10	27
1	54
61	0
8	36

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 5 to 11 April 2021 compared with similar events
Extreme rain in United States and Mexico, 23 February to 15 March 2019	2,223 records
Extreme rain in United States, 3 to 19 January 2024	2,133 records
Extreme rain in Australia, 7 to 26 March 2021	2,099 records
Extreme rain in United States and Mexico, 29 September to 19 October 2018	1,970 records
Extreme rain in United States, 19 December 2022 to 13 January 2023	1,941 records
Extreme rain in United States, 5 to 11 April 2021 (this event)	391 records

Every Record Set

20 of 391

Every record set or tied during Extreme rain in United States, 5 to 11 April 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-04-07	Ft Madison	Record daily precipitation	45.0 mm (1.8 in)	19.6 mm (0.8 in)	104	58 of 100 (Notable)
2021-04-07	Willow Rsvr	Record daily precipitation	32.5 mm (1.3 in)	19.3 mm (0.8 in)	70	55 of 100 (Notable)
2021-04-07	Herington	Record daily precipitation	39.4 mm (1.6 in)	23.9 mm (0.9 in)	79	52 of 100 (Notable)
2021-04-07	Milaca	Record daily precipitation	49.8 mm (2.0 in)	11.7 mm (0.5 in)	102	52 of 100 (Notable)
2021-04-07	Ellsworth	Record daily precipitation	37.1 mm (1.5 in)	11.7 mm (0.5 in)	106	51 of 100 (Notable)
2021-04-07	Edgemont 23 NNW	Record daily precipitation	35.6 mm (1.4 in)	28.5 mm (1.1 in)	28	51 of 100 (Notable)
2021-04-07	Aberdeen	Record daily precipitation	35.8 mm (1.4 in)	11.9 mm (0.5 in)	99	51 of 100 (Notable)
2021-04-08	Britton	Record daily precipitation	44.2 mm (1.7 in)	18.8 mm (0.7 in)	126	63 of 100 (Major)
2021-04-09	Winnibigoshish Dam	Record daily precipitation	52.3 mm (2.1 in)	29.4 mm (1.2 in)	52	63 of 100 (Major)
2021-04-09	Tupelo Rgnl AP	Record daily precipitation	74.4 mm (2.9 in)	61.7 mm (2.4 in)	46	53 of 100 (Notable)
2021-04-09	Waskish 4NE	Record daily precipitation	25.4 mm (1.0 in)	15.5 mm (0.6 in)	68	52 of 100 (Notable)
2021-04-10	Leeds	Record daily precipitation	85.3 mm (3.4 in)	42.4 mm (1.7 in)	84	55 of 100 (Notable)
2021-04-10	Burlington Muni AP	Record daily precipitation	60.7 mm (2.4 in)	26.4 mm (1.0 in)	67	55 of 100 (Notable)
2021-04-10	Columbia	Record daily precipitation	81.3 mm (3.2 in)	35.6 mm (1.4 in)	102	54 of 100 (Notable)
2021-04-10	Thibodaux 4 SE	Record daily precipitation	76.2 mm (3.0 in)	40.6 mm (1.6 in)	126	53 of 100 (Notable)
2021-04-11	Aledo	Record daily precipitation	84.8 mm (3.3 in)	50.3 mm (2.0 in)	47	64 of 100 (Major)
2021-04-11	Galva	Record daily precipitation	62.2 mm (2.4 in)	24.9 mm (1.0 in)	99	61 of 100 (Major)
2021-04-11	Fulton L&D #13	Record daily precipitation	72.4 mm (2.9 in)	44.5 mm (1.8 in)	26	55 of 100 (Notable)
2021-04-11	Morrison	Record daily precipitation	69.6 mm (2.7 in)	42.4 mm (1.7 in)	8	52 of 100 (Notable)
2021-04-11	Mt Carroll	Record daily precipitation	58.4 mm (2.3 in)	14.7 mm (0.6 in)	86	50 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 391 records the event counts. The counts above use the full total.

Related Headlines

Third party news, headline and link only

Download the Data

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.

Date	Records
2021-04-05	3
2021-04-06	24
2021-04-07	75
2021-04-08	123
2021-04-09	38
2021-04-10	90
2021-04-11	38

Margin (mm)	Years the old record stood
50	47
29	52
19	126
25	99
20	104
42	84
45	26
19	70
26	67
36	102
41	126
62	46
42	8
24	79
12	102
16	68
12	106
29	28
12	99
15	86
23	83
12	127
11	108
25	108
36	11
16	70
10	118
18	79
6	102
9	125
20	44
16	59
29	2
30	28
9	116
4	96
33	40
55	66
31	40
8	115
27	20
8	124
50	19
10	116
4	108
39	66
16	70
16	102
37	76
6	102
18	60
41	68
29	14
10	96
17	31
10	70
12	108
9	108
5	126
5	108
121	0
33	66
16	60
3	125
2	107
3	99
3	124
38	8
38	8
15	59
23	40
3	123
15	59
3	96
3	104
19	56
10	92
25	40
17	64
11	70
2	100
2	99
20	7
1	116
2	96
1	96
11	84
29	63
23	68
1	96
3	80
36	23
12	64
12	67
11	70
1	63
21	64
24	26
50	52
2	84
1	92
36	62
25	66
32	12
6	70
5	68
28	66
17	72
8	43
26	8
3	79
3	70
6	59
21	11
14	16
2	79
3	83
9	59
29	8
22	16
1	86
21	28
25	63
22	62
23	26
12	40
6	58
1	79
28	39
11	52
2	70
40	46
15	47
5	54
1	71
25	2
47	6
13	52
8	66
17	40
16	35
20	66
9	43
15	66
39	30
27	46
15	40
15	40
30	12
18	16
49	0
4	60
25	26
4	70
43	30
12	40
21	28
29	46
4	54
13	20
7	52
8	56
45	30
16	46
46	19
6	59
16	20
15	52
8	47
26	19
4	64
16	26
13	23
21	28
40	39
11	64
2	59
9	28
39	30
12	28
2	56
7	42
5	46
14	36
5	52
3	52
2	59
12	36
7	52
37	19
8	46
8	32
16	52
8	60
2	64
9	15
10	27
1	54
61	0
8	36

Margin (mm)	Years the old record stood
50	47
29	52
19	126
25	99
20	104
42	84
45	26
19	70
26	67
36	102
41	126
62	46
42	8
24	79
12	102
16	68
12	106
29	28
12	99
15	86
23	83
12	127
11	108
25	108
36	11
16	70
10	118
18	79
6	102
9	125
20	44
16	59
29	2
30	28
9	116
4	96
33	40
55	66
31	40
8	115
27	20
8	124
50	19
10	116
4	108
39	66
16	70
16	102
37	76
6	102
18	60
41	68
29	14
10	96
17	31
10	70
12	108
9	108
5	126
5	108
121	0
33	66
16	60
3	125
2	107
3	99
3	124
38	8
38	8
15	59
23	40
3	123
15	59
3	96
3	104
19	56
10	92
25	40
17	64
11	70
2	100
2	99
20	7
1	116
2	96
1	96
11	84
29	63
23	68
1	96
3	80
36	23
12	64
12	67
11	70
1	63
21	64
24	26
50	52
2	84
1	92
36	62
25	66
32	12
6	70
5	68
28	66
17	72
8	43
26	8
3	79
3	70
6	59
21	11
14	16
2	79
3	83
9	59
29	8
22	16
1	86
21	28
25	63
22	62
23	26
12	40
6	58
1	79
28	39
11	52
2	70
40	46
15	47
5	54
1	71
25	2
47	6
13	52
8	66
17	40
16	35
20	66
9	43
15	66
39	30
27	46
15	40
15	40
30	12
18	16
49	0
4	60
25	26
4	70
43	30
12	40
21	28
29	46
4	54
13	20
7	52
8	56
45	30
16	46
46	19
6	59
16	20
15	52
8	47
26	19
4	64
16	26
13	23
21	28
40	39
11	64
2	59
9	28
39	30
12	28
2	56
7	42
5	46
14	36
5	52
3	52
2	59
12	36
7	52
37	19
8	46
8	32
16	52
8	60
2	64
9	15
10	27
1	54
61	0
8	36

Margin (mm)	Years the old record stood
50	47
29	52
19	126
25	99
20	104
42	84
45	26
19	70
26	67
36	102
41	126
62	46
42	8
24	79
12	102
16	68
12	106
29	28
12	99
15	86
23	83
12	127
11	108
25	108
36	11
16	70
10	118
18	79
6	102
9	125
20	44
16	59
29	2
30	28
9	116
4	96
33	40
55	66
31	40
8	115
27	20
8	124
50	19
10	116
4	108
39	66
16	70
16	102
37	76
6	102
18	60
41	68
29	14
10	96
17	31
10	70
12	108
9	108
5	126
5	108
121	0
33	66
16	60
3	125
2	107
3	99
3	124
38	8
38	8
15	59
23	40
3	123
15	59
3	96
3	104
19	56
10	92
25	40
17	64
11	70
2	100
2	99
20	7
1	116
2	96
1	96
11	84
29	63
23	68
1	96
3	80
36	23
12	64
12	67
11	70
1	63
21	64
24	26
50	52
2	84
1	92
36	62
25	66
32	12
6	70
5	68
28	66
17	72
8	43
26	8
3	79
3	70
6	59
21	11
14	16
2	79
3	83
9	59
29	8
22	16
1	86
21	28
25	63
22	62
23	26
12	40
6	58
1	79
28	39
11	52
2	70
40	46
15	47
5	54
1	71
25	2
47	6
13	52
8	66
17	40
16	35
20	66
9	43
15	66
39	30
27	46
15	40
15	40
30	12
18	16
49	0
4	60
25	26
4	70
43	30
12	40
21	28
29	46
4	54
13	20
7	52
8	56
45	30
16	46
46	19
6	59
16	20
15	52
8	47
26	19
4	64
16	26
13	23
21	28
40	39
11	64
2	59
9	28
39	30
12	28
2	56
7	42
5	46
14	36
5	52
3	52
2	59
12	36
7	52
37	19
8	46
8	32
16	52
8	60
2	64
9	15
10	27
1	54
61	0
8	36