Extreme rain in United States and Mexico, 23 April to 6 May 2021

Name: Extreme rain in United States and Mexico, 23 April to 6 May 2021
Start: 2021-04-23
End: 2021-05-06
Location: United States, Mexico

Extreme rain in United States and Mexico, 23 April to 6 May 2021: 668 records at 608 stations, peak on 29 April 2021. Closed.

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

Key Facts

Extreme rain in United States and Mexico, 23 April to 6 May 2021 set or tied 668 station records at 608 stations.
It ran from 23 April 2021 to 6 May 2021 (14 days) and its peak day was 29 April 2021.
Status: closed.
Schenley Lock 5 set a daily record precipitation of 76.2 mm (3.0 in) on 5 May 2021.
The busiest day was 29 April 2021 with 140 records.
The oldest broken record in the ranked list had stood for 127 years.

Footprint

23 April to 6 May 2021

The area covered by Extreme rain in United States and Mexico, 23 April to 6 May 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 and Mexico, 23 April to 6 May 2021: stations that set records in the event
Station	Type	Value	Date
Schenley Lock 5	Record daily precipitation	76.2 mm (3.0 in)	2021-05-05
Austwell	Record daily precipitation	109.7 mm (4.3 in)	2021-05-01
Marion 2 N	Record daily precipitation	77.0 mm (3.0 in)	2021-04-29
Columbus	Record daily precipitation	145.5 mm (5.7 in)	2021-05-01
Leroy 5 WSW	Record daily precipitation	74.4 mm (2.9 in)	2021-04-28
Sabinal	Record daily precipitation	79.0 mm (3.1 in)	2021-04-29
Hardy	Record daily precipitation	91.4 mm (3.6 in)	2021-04-29
Akron 4 E	Record daily precipitation	66.8 mm (2.6 in)	2021-04-28
Boaz	Record daily precipitation	94.2 mm (3.7 in)	2021-05-05
Elmira	Record daily precipitation	42.7 mm (1.7 in)	2021-04-30
Gilbert	Record daily precipitation	111.8 mm (4.4 in)	2021-04-29
W Blocton	Record daily precipitation	171.5 mm (6.8 in)	2021-05-05
Birmingham AP	Record daily precipitation	91.2 mm (3.6 in)	2021-05-04
Allegany Sp	Record daily precipitation	52.1 mm (2.1 in)	2021-04-30
Harrison	Record daily precipitation	100.1 mm (3.9 in)	2021-04-28
Pandora	Record daily precipitation	47.0 mm (1.9 in)	2021-04-29
Duncan	Record daily precipitation	83.1 mm (3.3 in)	2021-04-28
Mammoth Spring	Record daily precipitation	99.1 mm (3.9 in)	2021-04-29
Jacksonville	Record daily precipitation	88.4 mm (3.5 in)	2021-05-05
St George	Record daily precipitation	20.1 mm (0.8 in)	2021-04-27

Records per Day

Peak day 140

Records set or tied each day from 23 April 2021 to 6 May 2021. The most in one day was 140 on 29 April 2021.

Records per day during Extreme rain in United States and Mexico, 23 April to 6 May 2021
Date	Records
2021-04-23	1
2021-04-24	6
2021-04-25	11
2021-04-26	26
2021-04-27	49
2021-04-28	71
2021-04-29	140
2021-04-30	121
2021-05-01	59
2021-05-02	19
2021-05-03	13
2021-05-04	50
2021-05-05	98
2021-05-06	4

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States and Mexico, 23 April to 6 May 2021 ranked by margin
Austwell, 05-01	93.2 mm (3.7 in)
Columbus, 05-01	84.5 mm (3.3 in)
Gilbert, 04-29	73.7 mm (2.9 in)
Boaz, 05-05	72.6 mm (2.9 in)
W Blocton, 05-05	67.4 mm (2.7 in)
Jacksonville, 05-05	56.1 mm (2.2 in)
Sabinal, 04-29	55.6 mm (2.2 in)
Hardy, 04-29	54.3 mm (2.1 in)
Schenley Lock 5, 05-05	53.3 mm (2.1 in)
Leroy 5 WSW, 04-28	52.6 mm (2.1 in)
Birmingham AP, 05-04	49.3 mm (1.9 in)
Duncan, 04-28	46.0 mm (1.8 in)
Harrison, 04-28	42.2 mm (1.7 in)
Marion 2 N, 04-29	38.9 mm (1.5 in)
Mammoth Spring, 04-29	38.6 mm (1.5 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

500 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 and Mexico, 23 April to 6 May 2021
Margin (mm)	Years the old record stood
53	107
93	99
39	127
85	110
53	80
56	102
54	112
73	76
20	86
24	108
67	33
74	64
15	80
49	84
34	59
42	106
30	70
46	80
56	63
39	98
30	14
86	59
14	112
20	112
26	63
17	80
15	108
22	59
41	40
58	30
23	59
27	38
89	47
49	68
27	76
34	96
14	110
17	114
82	52
22	59
27	98
9	68
20	98
19	98
60	15
21	64
25	40
43	64
33	86
59	34
38	83
55	63
27	87
20	74
28	40
7	104
31	31
59	30
44	4
21	59
36	58
16	74
26	76
7	112
35	55
21	116
60	15
32	64
28	64
10	75
26	72
64	10
15	91
6	98
39	75
29	64
34	10
12	116
43	46
40	34
17	72
33	58
54	42
11	102
11	96
12	114
5	88
26	54
4	119
15	16
14	59
44	27
20	72
23	67
21	58
12	70
29	63
38	13
22	62
44	32
34	48
23	47
16	38
17	38
3	107
14	62
33	62
5	64
6	86
25	68
44	30
9	70
28	37
14	36
38	48
37	48
22	18
3	119
11	59
22	24
5	104
8	90
5	90
19	64
7	80
2	99
12	74
8	72
12	59
25	46
36	36
9	52
45	40
41	4
16	54
13	74
23	27
24	30
12	64
11	74
17	36
17	75
3	99
1	112
8	25
17	64
24	16
33	15
10	64
37	30
16	38
29	55
6	58
5	58
37	8
60	8
1	90
46	15
46	34
38	31
16	3
50	6
13	30
24	64
13	26
20	68
3	71
19	30
25	48
13	75
1	88
1	91
25	34
21	7
15	12
19	47
8	64
31	15
23	24
6	67
3	80
23	24
58	12
8	67
18	68
38	19
35	15
30	28
1	84
6	59
25	47
15	60
22	48
14	30
12	59
9	27
18	38
16	24
28	34
16	40

Compared With Other Events

Station records per event

Station records in Extreme rain in United States and Mexico, 23 April to 6 May 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 and Mexico, 23 April to 6 May 2021 (this event)	668 records

Every Record Set

20 of 668

Every record set or tied during Extreme rain in United States and Mexico, 23 April to 6 May 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-04-27	St George	Record daily precipitation	20.1 mm (0.8 in)	15.3 mm (0.6 in)	80	20 of 100 (Routine)
2021-04-28	Leroy 5 WSW	Record daily precipitation	74.4 mm (2.9 in)	52.6 mm (2.1 in)	80	74 of 100 (Major)
2021-04-28	Akron 4 E	Record daily precipitation	66.8 mm (2.6 in)	19.8 mm (0.8 in)	86	71 of 100 (Major)
2021-04-28	Harrison	Record daily precipitation	100.1 mm (3.9 in)	42.2 mm (1.7 in)	106	65 of 100 (Major)
2021-04-28	Duncan	Record daily precipitation	83.1 mm (3.3 in)	46.0 mm (1.8 in)	80	63 of 100 (Major)
2021-04-29	Marion 2 N	Record daily precipitation	77.0 mm (3.0 in)	38.9 mm (1.5 in)	127	77 of 100 (Major)
2021-04-29	Sabinal	Record daily precipitation	79.0 mm (3.1 in)	55.6 mm (2.2 in)	102	73 of 100 (Major)
2021-04-29	Hardy	Record daily precipitation	91.4 mm (3.6 in)	54.3 mm (2.1 in)	112	72 of 100 (Major)
2021-04-29	Gilbert	Record daily precipitation	111.8 mm (4.4 in)	73.7 mm (2.9 in)	64	68 of 100 (Major)
2021-04-29	Pandora	Record daily precipitation	47.0 mm (1.9 in)	29.7 mm (1.2 in)	70	65 of 100 (Major)
2021-04-29	Mammoth Spring	Record daily precipitation	99.1 mm (3.9 in)	38.6 mm (1.5 in)	98	62 of 100 (Major)
2021-04-30	Elmira	Record daily precipitation	42.7 mm (1.7 in)	24.4 mm (1.0 in)	108	70 of 100 (Major)
2021-04-30	Allegany Sp	Record daily precipitation	52.1 mm (2.1 in)	34.3 mm (1.4 in)	59	66 of 100 (Major)
2021-05-01	Austwell	Record daily precipitation	109.7 mm (4.3 in)	93.2 mm (3.7 in)	99	79 of 100 (Major)
2021-05-01	Columbus	Record daily precipitation	145.5 mm (5.7 in)	84.5 mm (3.3 in)	110	76 of 100 (Major)
2021-05-04	Birmingham AP	Record daily precipitation	91.2 mm (3.6 in)	49.3 mm (1.9 in)	84	67 of 100 (Major)
2021-05-05	Schenley Lock 5	Record daily precipitation	76.2 mm (3.0 in)	53.3 mm (2.1 in)	107	80 of 100 (Exceptional)
2021-05-05	Boaz	Record daily precipitation	94.2 mm (3.7 in)	72.6 mm (2.9 in)	76	71 of 100 (Major)
2021-05-05	W Blocton	Record daily precipitation	171.5 mm (6.8 in)	67.4 mm (2.7 in)	33	68 of 100 (Major)
2021-05-05	Jacksonville	Record daily precipitation	88.4 mm (3.5 in)	56.1 mm (2.2 in)	63	62 of 100 (Major)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 668 records the event counts. The counts above use the full total.

Related Headlines

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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.

Margin (mm)	Years the old record stood
53	107
93	99
39	127
85	110
53	80
56	102
54	112
73	76
20	86
24	108
67	33
74	64
15	80
49	84
34	59
42	106
30	70
46	80
56	63
39	98
30	14
86	59
14	112
20	112
26	63
17	80
15	108
22	59
41	40
58	30
23	59
27	38
89	47
49	68
27	76
34	96
14	110
17	114
82	52
22	59
27	98
9	68
20	98
19	98
60	15
21	64
25	40
43	64
33	86
59	34
38	83
55	63
27	87
20	74
28	40
7	104
31	31
59	30
44	4
21	59
36	58
16	74
26	76
7	112
35	55
21	116
60	15
32	64
28	64
10	75
26	72
64	10
15	91
6	98
39	75
29	64
34	10
12	116
43	46
40	34
17	72
33	58
54	42
11	102
11	96
12	114
5	88
26	54
4	119
15	16
14	59
44	27
20	72
23	67
21	58
12	70
29	63
38	13
22	62
44	32
34	48
23	47
16	38
17	38
3	107
14	62
33	62
5	64
6	86
25	68
44	30
9	70
28	37
14	36
38	48
37	48
22	18
3	119
11	59
22	24
5	104
8	90
5	90
19	64
7	80
2	99
12	74
8	72
12	59
25	46
36	36
9	52
45	40
41	4
16	54
13	74
23	27
24	30
12	64
11	74
17	36
17	75
3	99
1	112
8	25
17	64
24	16
33	15
10	64
37	30
16	38
29	55
6	58
5	58
37	8
60	8
1	90
46	15
46	34
38	31
16	3
50	6
13	30
24	64
13	26
20	68
3	71
19	30
25	48
13	75
1	88
1	91
25	34
21	7
15	12
19	47
8	64
31	15
23	24
6	67
3	80
23	24
58	12
8	67
18	68
38	19
35	15
30	28
1	84
6	59
25	47
15	60
22	48
14	30
12	59
9	27
18	38
16	24
28	34
16	40

Margin (mm)	Years the old record stood
53	107
93	99
39	127
85	110
53	80
56	102
54	112
73	76
20	86
24	108
67	33
74	64
15	80
49	84
34	59
42	106
30	70
46	80
56	63
39	98
30	14
86	59
14	112
20	112
26	63
17	80
15	108
22	59
41	40
58	30
23	59
27	38
89	47
49	68
27	76
34	96
14	110
17	114
82	52
22	59
27	98
9	68
20	98
19	98
60	15
21	64
25	40
43	64
33	86
59	34
38	83
55	63
27	87
20	74
28	40
7	104
31	31
59	30
44	4
21	59
36	58
16	74
26	76
7	112
35	55
21	116
60	15
32	64
28	64
10	75
26	72
64	10
15	91
6	98
39	75
29	64
34	10
12	116
43	46
40	34
17	72
33	58
54	42
11	102
11	96
12	114
5	88
26	54
4	119
15	16
14	59
44	27
20	72
23	67
21	58
12	70
29	63
38	13
22	62
44	32
34	48
23	47
16	38
17	38
3	107
14	62
33	62
5	64
6	86
25	68
44	30
9	70
28	37
14	36
38	48
37	48
22	18
3	119
11	59
22	24
5	104
8	90
5	90
19	64
7	80
2	99
12	74
8	72
12	59
25	46
36	36
9	52
45	40
41	4
16	54
13	74
23	27
24	30
12	64
11	74
17	36
17	75
3	99
1	112
8	25
17	64
24	16
33	15
10	64
37	30
16	38
29	55
6	58
5	58
37	8
60	8
1	90
46	15
46	34
38	31
16	3
50	6
13	30
24	64
13	26
20	68
3	71
19	30
25	48
13	75
1	88
1	91
25	34
21	7
15	12
19	47
8	64
31	15
23	24
6	67
3	80
23	24
58	12
8	67
18	68
38	19
35	15
30	28
1	84
6	59
25	47
15	60
22	48
14	30
12	59
9	27
18	38
16	24
28	34
16	40

Margin (mm)	Years the old record stood
53	107
93	99
39	127
85	110
53	80
56	102
54	112
73	76
20	86
24	108
67	33
74	64
15	80
49	84
34	59
42	106
30	70
46	80
56	63
39	98
30	14
86	59
14	112
20	112
26	63
17	80
15	108
22	59
41	40
58	30
23	59
27	38
89	47
49	68
27	76
34	96
14	110
17	114
82	52
22	59
27	98
9	68
20	98
19	98
60	15
21	64
25	40
43	64
33	86
59	34
38	83
55	63
27	87
20	74
28	40
7	104
31	31
59	30
44	4
21	59
36	58
16	74
26	76
7	112
35	55
21	116
60	15
32	64
28	64
10	75
26	72
64	10
15	91
6	98
39	75
29	64
34	10
12	116
43	46
40	34
17	72
33	58
54	42
11	102
11	96
12	114
5	88
26	54
4	119
15	16
14	59
44	27
20	72
23	67
21	58
12	70
29	63
38	13
22	62
44	32
34	48
23	47
16	38
17	38
3	107
14	62
33	62
5	64
6	86
25	68
44	30
9	70
28	37
14	36
38	48
37	48
22	18
3	119
11	59
22	24
5	104
8	90
5	90
19	64
7	80
2	99
12	74
8	72
12	59
25	46
36	36
9	52
45	40
41	4
16	54
13	74
23	27
24	30
12	64
11	74
17	36
17	75
3	99
1	112
8	25
17	64
24	16
33	15
10	64
37	30
16	38
29	55
6	58
5	58
37	8
60	8
1	90
46	15
46	34
38	31
16	3
50	6
13	30
24	64
13	26
20	68
3	71
19	30
25	48
13	75
1	88
1	91
25	34
21	7
15	12
19	47
8	64
31	15
23	24
6	67
3	80
23	24
58	12
8	67
18	68
38	19
35	15
30	28
1	84
6	59
25	47
15	60
22	48
14	30
12	59
9	27
18	38
16	24
28	34
16	40