Extreme rain in United States and Mexico, 9 to 26 March 2020

Name: Extreme rain in United States and Mexico, 9 to 26 March 2020
Start: 2020-03-09
End: 2020-03-26
Location: United States, Mexico

Extreme rain in United States and Mexico, 9 to 26 March 2020: 1,647 records at 1,364 stations, peak on 20 March 2020. Closed.

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

Key Facts

Extreme rain in United States and Mexico, 9 to 26 March 2020 set or tied 1,647 station records at 1,364 stations.
It ran from 9 March 2020 to 26 March 2020 (18 days) and its peak day was 20 March 2020.
Status: closed.
Portage Wwtp set a daily record precipitation of 49.8 mm (2.0 in) on 20 March 2020.
The busiest day was 20 March 2020 with 301 records.
The oldest broken record in the ranked list had stood for 162 years.

Footprint

9 to 26 March 2020

The area covered by Extreme rain in United States and Mexico, 9 to 26 March 2020 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, 9 to 26 March 2020: stations that set records in the event
Station	Type	Value	Date
Portage Wwtp	Record daily precipitation	49.8 mm (2.0 in)	2020-03-20
Seymour 3NW	Record daily precipitation	61.2 mm (2.4 in)	2020-03-18
Moran 5WNW	Record daily precipitation	32.3 mm (1.3 in)	2020-03-15
Sac City	Record daily precipitation	42.7 mm (1.7 in)	2020-03-20
Longmont 2 ESE	Record daily precipitation	36.8 mm (1.4 in)	2020-03-20
Mecca Fire STN	Record daily precipitation	43.2 mm (1.7 in)	2020-03-12
Elliston	Record daily precipitation	72.6 mm (2.9 in)	2020-03-20
Charles City	Record daily precipitation	58.2 mm (2.3 in)	2020-03-20
Nixon	Record daily precipitation	51.6 mm (2.0 in)	2020-03-22
Tower Falls	Record daily precipitation	45.2 mm (1.8 in)	2020-03-15
Fall Rvr Mills	Record daily precipitation	40.4 mm (1.6 in)	2020-03-18
Kanawha	Record daily precipitation	46.0 mm (1.8 in)	2020-03-20
Pahrump 4 NW	Record daily precipitation	21.8 mm (0.9 in)	2020-03-13
Arco	Record daily precipitation	20.1 mm (0.8 in)	2020-03-15
Emmett 2 E	Record daily precipitation	24.4 mm (1.0 in)	2020-03-15
Yellowstone Park Mammoth	Record daily precipitation	19.1 mm (0.8 in)	2020-03-15
Howe	Record daily precipitation	23.9 mm (0.9 in)	2020-03-16
Cedarville	Record daily precipitation	22.4 mm (0.9 in)	2020-03-18
Jornada Exp Range	Record daily precipitation	14.2 mm (0.6 in)	2020-03-19
Grand Junction Walker Fld	Record daily precipitation	22.9 mm (0.9 in)	2020-03-19

Records per Day

Peak day 301

Records set or tied each day from 9 March 2020 to 26 March 2020. The most in one day was 301 on 20 March 2020.

Records per day during Extreme rain in United States and Mexico, 9 to 26 March 2020
Date	Records
2020-03-09	35
2020-03-10	83
2020-03-11	34
2020-03-12	59
2020-03-13	150
2020-03-14	120
2020-03-15	129
2020-03-16	50
2020-03-17	30
2020-03-18	130
2020-03-19	177
2020-03-20	301
2020-03-21	25
2020-03-22	54
2020-03-23	68
2020-03-24	76
2020-03-25	119
2020-03-26	7

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States and Mexico, 9 to 26 March 2020 ranked by margin
Seymour 3NW, 03-18	39.6 mm (1.6 in)
Charles City, 03-20	39.1 mm (1.5 in)
Nixon, 03-22	38.9 mm (1.5 in)
Elliston, 03-20	38.3 mm (1.5 in)
Kanawha, 03-20	32.5 mm (1.3 in)
Fall Rvr Mills, 03-18	32.0 mm (1.3 in)
Portage Wwtp, 03-20	31.3 mm (1.2 in)
Sac City, 03-20	31.3 mm (1.2 in)
Longmont 2 ESE, 03-20	25.6 mm (1.0 in)
Tower Falls, 03-15	22.3 mm (0.9 in)
Moran 5WNW, 03-15	21.1 mm (0.8 in)
Howe, 03-16	20.9 mm (0.8 in)
Pahrump 4 NW, 03-13	15.7 mm (0.6 in)
Grand Junction Walker Fld, 03-19	15.3 mm (0.6 in)
Emmett 2 E, 03-15	14.7 mm (0.6 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, 9 to 26 March 2020
Margin (mm)	Years the old record stood
15	108
31	98
40	96
21	85
14	98
15	93
31	78
16	99
12	113
26	61
21	62
11	113
38	77
39	50
39	90
32	53
22	26
9	120
33	51
11	96
15	59
22	38
33	57
35	36
123	37
15	68
28	56
19	80
13	119
25	100
31	103
8	99
23	93
55	51
26	50
19	78
25	50
18	87
17	119
26	108
31	96
84	36
14	108
19	79
28	68
18	100
6	93
22	65
28	42
41	21
32	25
29	37
16	40
17	83
12	98
24	50
16	81
20	58
28	25
6	121
9	72
6	98
14	102
25	96
15	33
30	25
7	97
33	36
17	25
23	84
22	53
34	17
22	94
16	23
17	56
39	67
23	88
14	111
16	79
34	25
21	120
11	119
14	120
7	65
39	20
32	41
26	8
25	34
19	38
7	105
10	50
12	102
5	93
13	93
43	21
6	102
23	75
24	25
8	119
9	115
8	81
21	51
17	113
33	24
14	108
15	106
12	83
10	107
15	25
11	37
21	38
7	101
17	41
24	56
6	108
35	31
15	121
18	51
34	14
45	34
31	21
62	24
14	47
18	79
21	84
14	93
19	77
27	59
29	45
13	36
17	1
29	71
9	114
23	34
8	71
17	77
6	119
4	107
10	1
11	38
3	99
7	117
23	15
16	40
10	83
19	2
20	38
46	30
27	60
23	47
2	77
66	8
15	75
17	56
5	108
22	64
17	50
7	88
9	115
11	107
26	71
20	76
15	49
4	115
11	80
15	51
13	68
8	79
4	102
11	76
15	47
2	82
8	108
26	8
10	119
8	103
5	52
23	41
5	106
18	53
26	36
15	51
16	53
4	115
10	83
49	47
4	102
5	114
4	96
49	27
16	79
3	122
11	40
8	40
21	50
15	50
25	9
8	108
7	108
30	41

Compared With Other Events

Station records per event

Station records in Extreme rain in United States and Mexico, 9 to 26 March 2020 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, 9 to 26 March 2020 (this event)	1,647 records

Every Record Set

20 of 1,647

Every record set or tied during Extreme rain in United States and Mexico, 9 to 26 March 2020, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2020-03-12	Mecca Fire STN	Record daily precipitation	43.2 mm (1.7 in)	11.4 mm (0.4 in)	113	67 of 100 (Major)
2020-03-13	Pahrump 4 NW	Record daily precipitation	21.8 mm (0.9 in)	15.7 mm (0.6 in)	99	20 of 100 (Routine)
2020-03-15	Moran 5WNW	Record daily precipitation	32.3 mm (1.3 in)	21.1 mm (0.8 in)	85	75 of 100 (Major)
2020-03-15	Tower Falls	Record daily precipitation	45.2 mm (1.8 in)	22.3 mm (0.9 in)	26	64 of 100 (Major)
2020-03-15	Arco	Record daily precipitation	20.1 mm (0.8 in)	14.3 mm (0.6 in)	98	20 of 100 (Routine)
2020-03-15	Emmett 2 E	Record daily precipitation	24.4 mm (1.0 in)	14.7 mm (0.6 in)	93	20 of 100 (Routine)
2020-03-15	Yellowstone Park Mammoth	Record daily precipitation	19.1 mm (0.8 in)	8.9 mm (0.35 in)	120	20 of 100 (Routine)
2020-03-16	Howe	Record daily precipitation	23.9 mm (0.9 in)	20.9 mm (0.8 in)	62	20 of 100 (Routine)
2020-03-18	Seymour 3NW	Record daily precipitation	61.2 mm (2.4 in)	39.6 mm (1.6 in)	96	76 of 100 (Major)
2020-03-18	Fall Rvr Mills	Record daily precipitation	40.4 mm (1.6 in)	32.0 mm (1.3 in)	53	64 of 100 (Major)
2020-03-18	Cedarville	Record daily precipitation	22.4 mm (0.9 in)	12.2 mm (0.5 in)	113	20 of 100 (Routine)
2020-03-19	Jornada Exp Range	Record daily precipitation	14.2 mm (0.6 in)	11.2 mm (0.4 in)	96	20 of 100 (Routine)
2020-03-19	Grand Junction Walker Fld	Record daily precipitation	22.9 mm (0.9 in)	15.3 mm (0.6 in)	108	20 of 100 (Routine)
2020-03-20	Portage Wwtp	Record daily precipitation	49.8 mm (2.0 in)	31.3 mm (1.2 in)	98	79 of 100 (Major)
2020-03-20	Sac City	Record daily precipitation	42.7 mm (1.7 in)	31.3 mm (1.2 in)	78	73 of 100 (Major)
2020-03-20	Longmont 2 ESE	Record daily precipitation	36.8 mm (1.4 in)	25.6 mm (1.0 in)	61	68 of 100 (Major)
2020-03-20	Elliston	Record daily precipitation	72.6 mm (2.9 in)	38.3 mm (1.5 in)	77	65 of 100 (Major)
2020-03-20	Charles City	Record daily precipitation	58.2 mm (2.3 in)	39.1 mm (1.5 in)	50	65 of 100 (Major)
2020-03-20	Kanawha	Record daily precipitation	46.0 mm (1.8 in)	32.5 mm (1.3 in)	51	63 of 100 (Major)
2020-03-22	Nixon	Record daily precipitation	51.6 mm (2.0 in)	38.9 mm (1.5 in)	90	65 of 100 (Major)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 1,647 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.

Margin (mm)	Years the old record stood
15	108
31	98
40	96
21	85
14	98
15	93
31	78
16	99
12	113
26	61
21	62
11	113
38	77
39	50
39	90
32	53
22	26
9	120
33	51
11	96
15	59
22	38
33	57
35	36
123	37
15	68
28	56
19	80
13	119
25	100
31	103
8	99
23	93
55	51
26	50
19	78
25	50
18	87
17	119
26	108
31	96
84	36
14	108
19	79
28	68
18	100
6	93
22	65
28	42
41	21
32	25
29	37
16	40
17	83
12	98
24	50
16	81
20	58
28	25
6	121
9	72
6	98
14	102
25	96
15	33
30	25
7	97
33	36
17	25
23	84
22	53
34	17
22	94
16	23
17	56
39	67
23	88
14	111
16	79
34	25
21	120
11	119
14	120
7	65
39	20
32	41
26	8
25	34
19	38
7	105
10	50
12	102
5	93
13	93
43	21
6	102
23	75
24	25
8	119
9	115
8	81
21	51
17	113
33	24
14	108
15	106
12	83
10	107
15	25
11	37
21	38
7	101
17	41
24	56
6	108
35	31
15	121
18	51
34	14
45	34
31	21
62	24
14	47
18	79
21	84
14	93
19	77
27	59
29	45
13	36
17	1
29	71
9	114
23	34
8	71
17	77
6	119
4	107
10	1
11	38
3	99
7	117
23	15
16	40
10	83
19	2
20	38
46	30
27	60
23	47
2	77
66	8
15	75
17	56
5	108
22	64
17	50
7	88
9	115
11	107
26	71
20	76
15	49
4	115
11	80
15	51
13	68
8	79
4	102
11	76
15	47
2	82
8	108
26	8
10	119
8	103
5	52
23	41
5	106
18	53
26	36
15	51
16	53
4	115
10	83
49	47
4	102
5	114
4	96
49	27
16	79
3	122
11	40
8	40
21	50
15	50
25	9
8	108
7	108
30	41

Margin (mm)	Years the old record stood
15	108
31	98
40	96
21	85
14	98
15	93
31	78
16	99
12	113
26	61
21	62
11	113
38	77
39	50
39	90
32	53
22	26
9	120
33	51
11	96
15	59
22	38
33	57
35	36
123	37
15	68
28	56
19	80
13	119
25	100
31	103
8	99
23	93
55	51
26	50
19	78
25	50
18	87
17	119
26	108
31	96
84	36
14	108
19	79
28	68
18	100
6	93
22	65
28	42
41	21
32	25
29	37
16	40
17	83
12	98
24	50
16	81
20	58
28	25
6	121
9	72
6	98
14	102
25	96
15	33
30	25
7	97
33	36
17	25
23	84
22	53
34	17
22	94
16	23
17	56
39	67
23	88
14	111
16	79
34	25
21	120
11	119
14	120
7	65
39	20
32	41
26	8
25	34
19	38
7	105
10	50
12	102
5	93
13	93
43	21
6	102
23	75
24	25
8	119
9	115
8	81
21	51
17	113
33	24
14	108
15	106
12	83
10	107
15	25
11	37
21	38
7	101
17	41
24	56
6	108
35	31
15	121
18	51
34	14
45	34
31	21
62	24
14	47
18	79
21	84
14	93
19	77
27	59
29	45
13	36
17	1
29	71
9	114
23	34
8	71
17	77
6	119
4	107
10	1
11	38
3	99
7	117
23	15
16	40
10	83
19	2
20	38
46	30
27	60
23	47
2	77
66	8
15	75
17	56
5	108
22	64
17	50
7	88
9	115
11	107
26	71
20	76
15	49
4	115
11	80
15	51
13	68
8	79
4	102
11	76
15	47
2	82
8	108
26	8
10	119
8	103
5	52
23	41
5	106
18	53
26	36
15	51
16	53
4	115
10	83
49	47
4	102
5	114
4	96
49	27
16	79
3	122
11	40
8	40
21	50
15	50
25	9
8	108
7	108
30	41

Margin (mm)	Years the old record stood
15	108
31	98
40	96
21	85
14	98
15	93
31	78
16	99
12	113
26	61
21	62
11	113
38	77
39	50
39	90
32	53
22	26
9	120
33	51
11	96
15	59
22	38
33	57
35	36
123	37
15	68
28	56
19	80
13	119
25	100
31	103
8	99
23	93
55	51
26	50
19	78
25	50
18	87
17	119
26	108
31	96
84	36
14	108
19	79
28	68
18	100
6	93
22	65
28	42
41	21
32	25
29	37
16	40
17	83
12	98
24	50
16	81
20	58
28	25
6	121
9	72
6	98
14	102
25	96
15	33
30	25
7	97
33	36
17	25
23	84
22	53
34	17
22	94
16	23
17	56
39	67
23	88
14	111
16	79
34	25
21	120
11	119
14	120
7	65
39	20
32	41
26	8
25	34
19	38
7	105
10	50
12	102
5	93
13	93
43	21
6	102
23	75
24	25
8	119
9	115
8	81
21	51
17	113
33	24
14	108
15	106
12	83
10	107
15	25
11	37
21	38
7	101
17	41
24	56
6	108
35	31
15	121
18	51
34	14
45	34
31	21
62	24
14	47
18	79
21	84
14	93
19	77
27	59
29	45
13	36
17	1
29	71
9	114
23	34
8	71
17	77
6	119
4	107
10	1
11	38
3	99
7	117
23	15
16	40
10	83
19	2
20	38
46	30
27	60
23	47
2	77
66	8
15	75
17	56
5	108
22	64
17	50
7	88
9	115
11	107
26	71
20	76
15	49
4	115
11	80
15	51
13	68
8	79
4	102
11	76
15	47
2	82
8	108
26	8
10	119
8	103
5	52
23	41
5	106
18	53
26	36
15	51
16	53
4	115
10	83
49	47
4	102
5	114
4	96
49	27
16	79
3	122
11	40
8	40
21	50
15	50
25	9
8	108
7	108
30	41