Extreme rain in United States, 4 to 15 April 2020

Name: Extreme rain in United States, 4 to 15 April 2020
Start: 2020-04-04
End: 2020-04-15
Location: United States

Extreme rain in United States, 4 to 15 April 2020: 299 records at 203 stations, peak on 6 April 2020. Closed.

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

Key Facts

Extreme rain in United States, 4 to 15 April 2020 set or tied 299 station records at 203 stations.
It ran from 4 April 2020 to 15 April 2020 (12 days) and its peak day was 6 April 2020.
Status: closed.
Chula Vista set a daily record precipitation of 46.0 mm (1.8 in) on 7 April 2020.
The busiest day was 6 April 2020 with 57 records.
The oldest broken record in the ranked list had stood for 118 years.

Footprint

4 to 15 April 2020

The area covered by Extreme rain in United States, 4 to 15 April 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, 4 to 15 April 2020: stations that set records in the event
Station	Type	Value	Date
Chula Vista	Record daily precipitation	46.0 mm (1.8 in)	2020-04-07
Poway Valley	Record daily precipitation	77.0 mm (3.0 in)	2020-04-10
Colfax	Record daily precipitation	97.3 mm (3.8 in)	2020-04-05
Juncal Dam	Record daily precipitation	113.8 mm (4.5 in)	2020-04-06
Barstow-Daggett AP	Record daily precipitation	26.2 mm (1.0 in)	2020-04-08
Vista	Record daily precipitation	80.8 mm (3.2 in)	2020-04-10
Lemon Cove	Record daily precipitation	35.6 mm (1.4 in)	2020-04-06
Pacoima Dam Fc33A-E	Record daily precipitation	63.8 mm (2.5 in)	2020-04-06
Escondido #2	Record daily precipitation	79.8 mm (3.1 in)	2020-04-10
Ojai	Record daily precipitation	63.0 mm (2.5 in)	2020-04-06
Redlands	Record daily precipitation	30.5 mm (1.2 in)	2020-04-07
Elsinore	Record daily precipitation	26.2 mm (1.0 in)	2020-04-10
Alpine	Record daily precipitation	38.6 mm (1.5 in)	2020-04-10
Trona	Record daily precipitation	22.6 mm (0.9 in)	2020-04-08
Victorville	Record daily precipitation	17.5 mm (0.7 in)	2020-04-08
Imperial	Record daily precipitation	12.7 mm (0.5 in)	2020-04-10
Eagle Mtn	Record daily precipitation	11.7 mm (0.5 in)	2020-04-11
Wupatki Nm	Record daily precipitation	15.2 mm (0.6 in)	2020-04-13
Prescott Love Fld	Record daily precipitation	16.3 mm (0.6 in)	2020-04-13
Winslow AP	Record daily precipitation	17.5 mm (0.7 in)	2020-04-13

Records per Day

Peak day 57

Records set or tied each day from 4 April 2020 to 15 April 2020. The most in one day was 57 on 6 April 2020.

Records per day during Extreme rain in United States, 4 to 15 April 2020
Date	Records
2020-04-04	4
2020-04-05	42
2020-04-06	57
2020-04-07	34
2020-04-08	36
2020-04-09	36
2020-04-10	42
2020-04-11	13
2020-04-12	4
2020-04-13	20
2020-04-14	9
2020-04-15	2

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 4 to 15 April 2020 ranked by margin
Juncal Dam, 04-06	68.6 mm (2.7 in)
Pacoima Dam Fc33A-E, 04-06	44.2 mm (1.7 in)
Vista, 04-10	43.5 mm (1.7 in)
Colfax, 04-05	35.6 mm (1.4 in)
Escondido #2, 04-10	34.1 mm (1.3 in)
Chula Vista, 04-07	33.0 mm (1.3 in)
Poway Valley, 04-10	31.8 mm (1.3 in)
Alpine, 04-10	26.4 mm (1.0 in)
Ojai, 04-06	26.2 mm (1.0 in)
Trona, 04-08	19.0 mm (0.7 in)
Lemon Cove, 04-06	18.8 mm (0.7 in)
Elsinore, 04-10	16.8 mm (0.7 in)
Redlands, 04-07	15.3 mm (0.6 in)
Victorville, 04-08	13.7 mm (0.5 in)
Wupatki Nm, 04-13	12.7 mm (0.5 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

299 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, 4 to 15 April 2020
Margin (mm)	Years the old record stood
19	94
33	85
32	45
13	118
13	64
36	94
9	79
69	62
44	14
10	54
11	76
34	16
19	94
44	45
14	68
17	93
26	94
15	96
13	64
26	55
47	51
36	85
17	77
19	40
22	94
27	19
14	39
7	94
29	72
17	55
34	4
3	81
18	109
9	62
17	62
12	51
10	79
16	62
11	55
51	21
19	30
8	94
4	79
17	14
10	85
17	62
14	94
21	21
21	45
38	45
22	19
11	67
10	57
36	21
3	63
7	62
6	109
8	70
13	77
30	4
32	51
22	62
13	4
27	66
8	68
1	42
14	77
23	62
5	94
28	57
7	85
5	70
20	38
10	21
11	68
2	108
22	45
8	78
8	55
16	19
12	4
12	42
2	94
20	21
22	1
8	53
9	82
3	94
13	62
38	14
1	94
2	94
5	62
7	62
14	51
33	19
8	70
8	70
19	40
6	62
7	55
3	62
7	68
5	79
12	32
28	21
10	48
17	45
10	55
19	51
6	62
11	34
16	62
30	10
10	55
8	55
2	78
5	62
4	72
7	62
7	62
7	62
5	70
5	55
2	70
10	19
10	19
8	34
4	62
12	45
5	62
3	68
19	8
1	77
12	40
13	45
18	21
7	55
3	62
4	64
4	34
5	42
5	72
11	19
2	62
15	37
4	42
5	68
6	40
9	22
1	44
4	45
8	42
4	55
6	19
0	68
22	19
2	55
14	19
10	40
8	45
0	75
5	44
9	45
4	51
2	68
4	28
7	55
24	21
1	62
3	37
8	7
15	16
9	36
2	51
17	21
1	38
2	55
2	68
9	34
10	40
8	38
0	68
6	45
15	40
2	55
7	51
8	51
4	48
0	68
1	54
4	39
2	55
13	19
14	21
1	62
4	51
11	24
11	4
5	48

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 4 to 15 April 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, 4 to 15 April 2020 (this event)	299 records

Every Record Set

20 of 299

Every record set or tied during Extreme rain in United States, 4 to 15 April 2020, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2020-04-05	Colfax	Record daily precipitation	97.3 mm (3.8 in)	35.6 mm (1.4 in)	94	62 of 100 (Major)
2020-04-06	Juncal Dam	Record daily precipitation	113.8 mm (4.5 in)	68.6 mm (2.7 in)	62	60 of 100 (Major)
2020-04-06	Lemon Cove	Record daily precipitation	35.6 mm (1.4 in)	18.8 mm (0.7 in)	94	59 of 100 (Notable)
2020-04-06	Pacoima Dam Fc33A-E	Record daily precipitation	63.8 mm (2.5 in)	44.2 mm (1.7 in)	45	59 of 100 (Notable)
2020-04-06	Ojai	Record daily precipitation	63.0 mm (2.5 in)	26.2 mm (1.0 in)	94	58 of 100 (Notable)
2020-04-07	Chula Vista	Record daily precipitation	46.0 mm (1.8 in)	33.0 mm (1.3 in)	85	75 of 100 (Major)
2020-04-07	Redlands	Record daily precipitation	30.5 mm (1.2 in)	15.3 mm (0.6 in)	96	58 of 100 (Notable)
2020-04-08	Barstow-Daggett AP	Record daily precipitation	26.2 mm (1.0 in)	9.7 mm (0.38 in)	54	60 of 100 (Major)
2020-04-08	Trona	Record daily precipitation	22.6 mm (0.9 in)	19.0 mm (0.7 in)	94	20 of 100 (Routine)
2020-04-08	Victorville	Record daily precipitation	17.5 mm (0.7 in)	13.7 mm (0.5 in)	68	20 of 100 (Routine)
2020-04-10	Poway Valley	Record daily precipitation	77.0 mm (3.0 in)	31.8 mm (1.3 in)	45	73 of 100 (Major)
2020-04-10	Vista	Record daily precipitation	80.8 mm (3.2 in)	43.5 mm (1.7 in)	14	60 of 100 (Major)
2020-04-10	Escondido #2	Record daily precipitation	79.8 mm (3.1 in)	34.1 mm (1.3 in)	16	59 of 100 (Notable)
2020-04-10	Elsinore	Record daily precipitation	26.2 mm (1.0 in)	16.8 mm (0.7 in)	93	58 of 100 (Notable)
2020-04-10	Alpine	Record daily precipitation	38.6 mm (1.5 in)	26.4 mm (1.0 in)	55	56 of 100 (Notable)
2020-04-10	Imperial	Record daily precipitation	12.7 mm (0.5 in)	12.7 mm (0.5 in)	118	20 of 100 (Routine)
2020-04-11	Eagle Mtn	Record daily precipitation	11.7 mm (0.5 in)	9.4 mm (0.37 in)	79	20 of 100 (Routine)
2020-04-13	Wupatki Nm	Record daily precipitation	15.2 mm (0.6 in)	12.7 mm (0.5 in)	64	20 of 100 (Routine)
2020-04-13	Prescott Love Fld	Record daily precipitation	16.3 mm (0.6 in)	12.5 mm (0.5 in)	64	20 of 100 (Routine)
2020-04-13	Winslow AP	Record daily precipitation	17.5 mm (0.7 in)	10.9 mm (0.4 in)	76	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 299 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
19	94
33	85
32	45
13	118
13	64
36	94
9	79
69	62
44	14
10	54
11	76
34	16
19	94
44	45
14	68
17	93
26	94
15	96
13	64
26	55
47	51
36	85
17	77
19	40
22	94
27	19
14	39
7	94
29	72
17	55
34	4
3	81
18	109
9	62
17	62
12	51
10	79
16	62
11	55
51	21
19	30
8	94
4	79
17	14
10	85
17	62
14	94
21	21
21	45
38	45
22	19
11	67
10	57
36	21
3	63
7	62
6	109
8	70
13	77
30	4
32	51
22	62
13	4
27	66
8	68
1	42
14	77
23	62
5	94
28	57
7	85
5	70
20	38
10	21
11	68
2	108
22	45
8	78
8	55
16	19
12	4
12	42
2	94
20	21
22	1
8	53
9	82
3	94
13	62
38	14
1	94
2	94
5	62
7	62
14	51
33	19
8	70
8	70
19	40
6	62
7	55
3	62
7	68
5	79
12	32
28	21
10	48
17	45
10	55
19	51
6	62
11	34
16	62
30	10
10	55
8	55
2	78
5	62
4	72
7	62
7	62
7	62
5	70
5	55
2	70
10	19
10	19
8	34
4	62
12	45
5	62
3	68
19	8
1	77
12	40
13	45
18	21
7	55
3	62
4	64
4	34
5	42
5	72
11	19
2	62
15	37
4	42
5	68
6	40
9	22
1	44
4	45
8	42
4	55
6	19
0	68
22	19
2	55
14	19
10	40
8	45
0	75
5	44
9	45
4	51
2	68
4	28
7	55
24	21
1	62
3	37
8	7
15	16
9	36
2	51
17	21
1	38
2	55
2	68
9	34
10	40
8	38
0	68
6	45
15	40
2	55
7	51
8	51
4	48
0	68
1	54
4	39
2	55
13	19
14	21
1	62
4	51
11	24
11	4
5	48

Margin (mm)	Years the old record stood
19	94
33	85
32	45
13	118
13	64
36	94
9	79
69	62
44	14
10	54
11	76
34	16
19	94
44	45
14	68
17	93
26	94
15	96
13	64
26	55
47	51
36	85
17	77
19	40
22	94
27	19
14	39
7	94
29	72
17	55
34	4
3	81
18	109
9	62
17	62
12	51
10	79
16	62
11	55
51	21
19	30
8	94
4	79
17	14
10	85
17	62
14	94
21	21
21	45
38	45
22	19
11	67
10	57
36	21
3	63
7	62
6	109
8	70
13	77
30	4
32	51
22	62
13	4
27	66
8	68
1	42
14	77
23	62
5	94
28	57
7	85
5	70
20	38
10	21
11	68
2	108
22	45
8	78
8	55
16	19
12	4
12	42
2	94
20	21
22	1
8	53
9	82
3	94
13	62
38	14
1	94
2	94
5	62
7	62
14	51
33	19
8	70
8	70
19	40
6	62
7	55
3	62
7	68
5	79
12	32
28	21
10	48
17	45
10	55
19	51
6	62
11	34
16	62
30	10
10	55
8	55
2	78
5	62
4	72
7	62
7	62
7	62
5	70
5	55
2	70
10	19
10	19
8	34
4	62
12	45
5	62
3	68
19	8
1	77
12	40
13	45
18	21
7	55
3	62
4	64
4	34
5	42
5	72
11	19
2	62
15	37
4	42
5	68
6	40
9	22
1	44
4	45
8	42
4	55
6	19
0	68
22	19
2	55
14	19
10	40
8	45
0	75
5	44
9	45
4	51
2	68
4	28
7	55
24	21
1	62
3	37
8	7
15	16
9	36
2	51
17	21
1	38
2	55
2	68
9	34
10	40
8	38
0	68
6	45
15	40
2	55
7	51
8	51
4	48
0	68
1	54
4	39
2	55
13	19
14	21
1	62
4	51
11	24
11	4
5	48

Margin (mm)	Years the old record stood
19	94
33	85
32	45
13	118
13	64
36	94
9	79
69	62
44	14
10	54
11	76
34	16
19	94
44	45
14	68
17	93
26	94
15	96
13	64
26	55
47	51
36	85
17	77
19	40
22	94
27	19
14	39
7	94
29	72
17	55
34	4
3	81
18	109
9	62
17	62
12	51
10	79
16	62
11	55
51	21
19	30
8	94
4	79
17	14
10	85
17	62
14	94
21	21
21	45
38	45
22	19
11	67
10	57
36	21
3	63
7	62
6	109
8	70
13	77
30	4
32	51
22	62
13	4
27	66
8	68
1	42
14	77
23	62
5	94
28	57
7	85
5	70
20	38
10	21
11	68
2	108
22	45
8	78
8	55
16	19
12	4
12	42
2	94
20	21
22	1
8	53
9	82
3	94
13	62
38	14
1	94
2	94
5	62
7	62
14	51
33	19
8	70
8	70
19	40
6	62
7	55
3	62
7	68
5	79
12	32
28	21
10	48
17	45
10	55
19	51
6	62
11	34
16	62
30	10
10	55
8	55
2	78
5	62
4	72
7	62
7	62
7	62
5	70
5	55
2	70
10	19
10	19
8	34
4	62
12	45
5	62
3	68
19	8
1	77
12	40
13	45
18	21
7	55
3	62
4	64
4	34
5	42
5	72
11	19
2	62
15	37
4	42
5	68
6	40
9	22
1	44
4	45
8	42
4	55
6	19
0	68
22	19
2	55
14	19
10	40
8	45
0	75
5	44
9	45
4	51
2	68
4	28
7	55
24	21
1	62
3	37
8	7
15	16
9	36
2	51
17	21
1	38
2	55
2	68
9	34
10	40
8	38
0	68
6	45
15	40
2	55
7	51
8	51
4	48
0	68
1	54
4	39
2	55
13	19
14	21
1	62
4	51
11	24
11	4
5	48