Extreme rain in United States and Mexico, 31 July to 7 August 2021

Name: Extreme rain in United States and Mexico, 31 July to 7 August 2021
Start: 2021-07-31
End: 2021-08-07
Location: United States, Mexico

Extreme rain in United States and Mexico, 31 July to 7 August 2021: 122 records at 113 stations, peak on 2 August 2021. Closed.

Data as of 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Key Facts

Extreme rain in United States and Mexico, 31 July to 7 August 2021 set or tied 122 station records at 113 stations.
It ran from 31 July 2021 to 7 August 2021 (8 days) and its peak day was 2 August 2021.
Status: closed.
Calhoun 2 N set a daily record precipitation of 98.0 mm (3.9 in) on 2 August 2021.
The busiest day was 2 August 2021 with 31 records.
The oldest broken record in the ranked list had stood for 124 years.

Footprint

31 July to 7 August 2021

The area covered by Extreme rain in United States and Mexico, 31 July to 7 August 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, 31 July to 7 August 2021: stations that set records in the event
Station	Type	Value	Date
Calhoun 2 N	Record daily precipitation	98.0 mm (3.9 in)	2021-08-02
Nashville Intl AP	Record daily precipitation	79.5 mm (3.1 in)	2021-07-31
Decatur	Record daily precipitation	109.7 mm (4.3 in)	2021-08-02
Inverness 3 SE	Record daily precipitation	147.3 mm (5.8 in)	2021-08-03
Springfield Exp STN	Record daily precipitation	61.0 mm (2.4 in)	2021-08-01
Austwell	Record daily precipitation	74.2 mm (2.9 in)	2021-08-05
Lewisville Dam	Record daily precipitation	76.2 mm (3.0 in)	2021-08-02
Orlando Executive AP	Record daily precipitation	130.6 mm (5.1 in)	2021-08-06
W Monroe	Record daily precipitation	55.1 mm (2.2 in)	2021-08-02
Punta Gorda 4 ESE	Record daily precipitation	100.3 mm (3.9 in)	2021-08-04
Grapevine Dam	Record daily precipitation	45.7 mm (1.8 in)	2021-08-03
Gravelly	Record daily precipitation	45.2 mm (1.8 in)	2021-08-01
Union Church	Record daily precipitation	80.0 mm (3.1 in)	2021-08-03
Sinton	Record daily precipitation	36.3 mm (1.4 in)	2021-08-06
Gainesville 5 ENE	Record daily precipitation	64.5 mm (2.5 in)	2021-08-02
Palacios Muni AP	Record daily precipitation	71.1 mm (2.8 in)	2021-08-05
Center	Record daily precipitation	49.3 mm (1.9 in)	2021-08-02
Brunswick	Record daily precipitation	54.6 mm (2.1 in)	2021-08-05
Brownsville	Record daily precipitation	41.9 mm (1.6 in)	2021-08-01
Carrizo Springs 3S	Record daily precipitation	36.1 mm (1.4 in)	2021-08-05

Records per Day

Peak day 31

Records set or tied each day from 31 July 2021 to 7 August 2021. The most in one day was 31 on 2 August 2021.

Records per day during Extreme rain in United States and Mexico, 31 July to 7 August 2021
Date	Records
2021-07-31	1
2021-08-01	14
2021-08-02	31
2021-08-03	28
2021-08-04	14
2021-08-05	19
2021-08-06	14
2021-08-07	1

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States and Mexico, 31 July to 7 August 2021 ranked by margin
Decatur, 08-02	72.1 mm (2.8 in)
Lewisville Dam, 08-02	69.8 mm (2.7 in)
Inverness 3 SE, 08-03	69.3 mm (2.7 in)
Union Church, 08-03	57.1 mm (2.2 in)
Gainesville 5 ENE, 08-02	54.8 mm (2.2 in)
Calhoun 2 N, 08-02	51.3 mm (2.0 in)
Punta Gorda 4 ESE, 08-04	49.5 mm (1.9 in)
Nashville Intl AP, 07-31	44.4 mm (1.7 in)
Palacios Muni AP, 08-05	43.9 mm (1.7 in)
Austwell, 08-05	43.7 mm (1.7 in)
W Monroe, 08-02	34.8 mm (1.4 in)
Springfield Exp STN, 08-01	34.3 mm (1.4 in)
Gravelly, 08-01	31.5 mm (1.2 in)
Grapevine Dam, 08-03	28.2 mm (1.1 in)
Sinton, 08-06	26.9 mm (1.1 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

122 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, 31 July to 7 August 2021
Margin (mm)	Years the old record stood
51	124
69	26
72	26
44	51
34	78
44	104
70	28
7	92
35	80
50	52
28	59
32	62
57	38
27	79
55	28
44	50
4	100
26	64
12	83
12	82
18	66
36	31
5	80
2	88
19	54
40	36
26	50
31	35
21	50
34	38
11	59
23	46
42	32
14	52
6	72
16	38
6	59
26	14
26	28
44	24
6	72
19	38
15	59
1	66
58	16
4	72
19	31
31	20
10	42
32	14
5	62
32	12
8	58
36	12
3	66
28	30
13	42
1	60
8	46
18	36
31	6
24	32
7	44
16	26
30	16
4	40
6	52
20	27
19	7
7	46
21	27
15	23
13	24
22	12
4	50
44	4
7	30
20	32
13	26
9	28
4	50
13	26
14	22
6	28
3	42
23	4
6	44
9	40
0	48
8	28
9	38
10	14
2	42
12	16
14	32
12	20
3	28
15	15
8	31
5	35
8	27
20	4
2	24
15	4
1	38
8	23
2	32
3	23
7	24
1	32
2	31
3	26
10	4
13	12
11	20
5	16
10	0
3	4
0	16
0	2
6	0
5	0

Compared With Other Events

Station records per event

Station records in Extreme rain in United States and Mexico, 31 July to 7 August 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, 31 July to 7 August 2021 (this event)	122 records

Every Record Set

20 of 122

Every record set or tied during Extreme rain in United States and Mexico, 31 July to 7 August 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-07-31	Nashville Intl AP	Record daily precipitation	79.5 mm (3.1 in)	44.4 mm (1.7 in)	51	57 of 100 (Notable)
2021-08-01	Springfield Exp STN	Record daily precipitation	61.0 mm (2.4 in)	34.3 mm (1.4 in)	78	55 of 100 (Notable)
2021-08-01	Gravelly	Record daily precipitation	45.2 mm (1.8 in)	31.5 mm (1.2 in)	62	46 of 100 (Notable)
2021-08-01	Brownsville	Record daily precipitation	41.9 mm (1.6 in)	11.7 mm (0.5 in)	83	41 of 100 (Notable)
2021-08-02	Calhoun 2 N	Record daily precipitation	98.0 mm (3.9 in)	51.3 mm (2.0 in)	124	73 of 100 (Major)
2021-08-02	Decatur	Record daily precipitation	109.7 mm (4.3 in)	72.1 mm (2.8 in)	26	57 of 100 (Notable)
2021-08-02	Lewisville Dam	Record daily precipitation	76.2 mm (3.0 in)	69.8 mm (2.7 in)	28	53 of 100 (Notable)
2021-08-02	W Monroe	Record daily precipitation	55.1 mm (2.2 in)	34.8 mm (1.4 in)	80	50 of 100 (Notable)
2021-08-02	Gainesville 5 ENE	Record daily precipitation	64.5 mm (2.5 in)	54.8 mm (2.2 in)	28	44 of 100 (Notable)
2021-08-02	Center	Record daily precipitation	49.3 mm (1.9 in)	26.4 mm (1.0 in)	64	42 of 100 (Notable)
2021-08-03	Inverness 3 SE	Record daily precipitation	147.3 mm (5.8 in)	69.3 mm (2.7 in)	26	57 of 100 (Notable)
2021-08-03	Grapevine Dam	Record daily precipitation	45.7 mm (1.8 in)	28.2 mm (1.1 in)	59	47 of 100 (Notable)
2021-08-03	Union Church	Record daily precipitation	80.0 mm (3.1 in)	57.1 mm (2.2 in)	38	45 of 100 (Notable)
2021-08-04	Punta Gorda 4 ESE	Record daily precipitation	100.3 mm (3.9 in)	49.5 mm (1.9 in)	52	48 of 100 (Notable)
2021-08-05	Austwell	Record daily precipitation	74.2 mm (2.9 in)	43.7 mm (1.7 in)	104	55 of 100 (Notable)
2021-08-05	Palacios Muni AP	Record daily precipitation	71.1 mm (2.8 in)	43.9 mm (1.7 in)	50	44 of 100 (Notable)
2021-08-05	Brunswick	Record daily precipitation	54.6 mm (2.1 in)	3.8 mm (0.15 in)	100	42 of 100 (Notable)
2021-08-05	Carrizo Springs 3S	Record daily precipitation	36.1 mm (1.4 in)	12.2 mm (0.5 in)	82	39 of 100 (Notable)
2021-08-06	Orlando Executive AP	Record daily precipitation	130.6 mm (5.1 in)	6.6 mm (0.26 in)	92	51 of 100 (Notable)
2021-08-06	Sinton	Record daily precipitation	36.3 mm (1.4 in)	26.9 mm (1.1 in)	79	45 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 122 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 2026-10-18. 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
51	124
69	26
72	26
44	51
34	78
44	104
70	28
7	92
35	80
50	52
28	59
32	62
57	38
27	79
55	28
44	50
4	100
26	64
12	83
12	82
18	66
36	31
5	80
2	88
19	54
40	36
26	50
31	35
21	50
34	38
11	59
23	46
42	32
14	52
6	72
16	38
6	59
26	14
26	28
44	24
6	72
19	38
15	59
1	66
58	16
4	72
19	31
31	20
10	42
32	14
5	62
32	12
8	58
36	12
3	66
28	30
13	42
1	60
8	46
18	36
31	6
24	32
7	44
16	26
30	16
4	40
6	52
20	27
19	7
7	46
21	27
15	23
13	24
22	12
4	50
44	4
7	30
20	32
13	26
9	28
4	50
13	26
14	22
6	28
3	42
23	4
6	44
9	40
0	48
8	28
9	38
10	14
2	42
12	16
14	32
12	20
3	28
15	15
8	31
5	35
8	27
20	4
2	24
15	4
1	38
8	23
2	32
3	23
7	24
1	32
2	31
3	26
10	4
13	12
11	20
5	16
10	0
3	4
0	16
0	2
6	0
5	0

Margin (mm)	Years the old record stood
51	124
69	26
72	26
44	51
34	78
44	104
70	28
7	92
35	80
50	52
28	59
32	62
57	38
27	79
55	28
44	50
4	100
26	64
12	83
12	82
18	66
36	31
5	80
2	88
19	54
40	36
26	50
31	35
21	50
34	38
11	59
23	46
42	32
14	52
6	72
16	38
6	59
26	14
26	28
44	24
6	72
19	38
15	59
1	66
58	16
4	72
19	31
31	20
10	42
32	14
5	62
32	12
8	58
36	12
3	66
28	30
13	42
1	60
8	46
18	36
31	6
24	32
7	44
16	26
30	16
4	40
6	52
20	27
19	7
7	46
21	27
15	23
13	24
22	12
4	50
44	4
7	30
20	32
13	26
9	28
4	50
13	26
14	22
6	28
3	42
23	4
6	44
9	40
0	48
8	28
9	38
10	14
2	42
12	16
14	32
12	20
3	28
15	15
8	31
5	35
8	27
20	4
2	24
15	4
1	38
8	23
2	32
3	23
7	24
1	32
2	31
3	26
10	4
13	12
11	20
5	16
10	0
3	4
0	16
0	2
6	0
5	0

Margin (mm)	Years the old record stood
51	124
69	26
72	26
44	51
34	78
44	104
70	28
7	92
35	80
50	52
28	59
32	62
57	38
27	79
55	28
44	50
4	100
26	64
12	83
12	82
18	66
36	31
5	80
2	88
19	54
40	36
26	50
31	35
21	50
34	38
11	59
23	46
42	32
14	52
6	72
16	38
6	59
26	14
26	28
44	24
6	72
19	38
15	59
1	66
58	16
4	72
19	31
31	20
10	42
32	14
5	62
32	12
8	58
36	12
3	66
28	30
13	42
1	60
8	46
18	36
31	6
24	32
7	44
16	26
30	16
4	40
6	52
20	27
19	7
7	46
21	27
15	23
13	24
22	12
4	50
44	4
7	30
20	32
13	26
9	28
4	50
13	26
14	22
6	28
3	42
23	4
6	44
9	40
0	48
8	28
9	38
10	14
2	42
12	16
14	32
12	20
3	28
15	15
8	31
5	35
8	27
20	4
2	24
15	4
1	38
8	23
2	32
3	23
7	24
1	32
2	31
3	26
10	4
13	12
11	20
5	16
10	0
3	4
0	16
0	2
6	0
5	0