Extreme rain in United States, 31 January to 9 February 2020

Name: Extreme rain in United States, 31 January to 9 February 2020
Start: 2020-01-31
End: 2020-02-09
Location: United States

Extreme rain in United States, 31 January to 9 February 2020: 519 records at 390 stations, peak on 6 February 2020. Closed.

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

Key Facts

Extreme rain in United States, 31 January to 9 February 2020 set or tied 519 station records at 390 stations.
It ran from 31 January 2020 to 9 February 2020 (10 days) and its peak day was 6 February 2020.
Status: closed.
Riggins set a daily record precipitation of 29.5 mm (1.2 in) on 6 February 2020.
The busiest day was 6 February 2020 with 199 records.
The oldest broken record in the ranked list had stood for 123 years.

Footprint

31 January to 9 February 2020

The area covered by Extreme rain in United States, 31 January to 9 February 2020 is outlined, with 19 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Extreme rain in United States, 31 January to 9 February 2020: stations that set records in the event
Station	Type	Value	Date
Riggins	Record daily precipitation	29.5 mm (1.2 in)	2020-02-06
Coupeville 1 S	Record daily precipitation	42.2 mm (1.7 in)	2020-02-05
Hebgen Dam	Record daily precipitation	31.8 mm (1.3 in)	2020-02-05
Startup 1 E	Record daily precipitation	71.4 mm (2.8 in)	2020-02-06
Palmer 3 ESE	Record daily precipitation	88.9 mm (3.5 in)	2020-02-05
County Line	Record daily precipitation	55.9 mm (2.2 in)	2020-02-05
Cabin Creek	Record daily precipitation	35.6 mm (1.4 in)	2020-02-08
Meacham	Record daily precipitation	39.9 mm (1.6 in)	2020-02-08
Pomeroy	Record daily precipitation	31.0 mm (1.2 in)	2020-02-06
Chilly Barton Flat	Record daily precipitation	20.3 mm (0.8 in)	2020-02-02
Long Creek	Record daily precipitation	18.5 mm (0.7 in)	2020-02-05
Pendleton	Record daily precipitation	16.3 mm (0.6 in)	2020-02-05
Hayden	Record daily precipitation	17.0 mm (0.7 in)	2020-02-06
Cottonwood 2 WSW	Record daily precipitation	22.4 mm (0.9 in)	2020-02-06
Union	Record daily precipitation	24.1 mm (0.9 in)	2020-02-06
Tower Falls	Record daily precipitation	17.0 mm (0.7 in)	2020-02-06
Walla Walla Rgnl AP	Record daily precipitation	23.1 mm (0.9 in)	2020-02-06
Yampa	Record daily precipitation	17.3 mm (0.7 in)	2020-02-07
Lamar Rs	Record daily precipitation	22.9 mm (0.9 in)	2020-02-08

Records per Day

Peak day 199

Records set or tied each day from 31 January 2020 to 9 February 2020. The most in one day was 199 on 6 February 2020.

Records per day during Extreme rain in United States, 31 January to 9 February 2020
Date	Records
2020-01-31	1
2020-02-01	2
2020-02-02	18
2020-02-03	43
2020-02-04	19
2020-02-05	102
2020-02-06	199
2020-02-07	104
2020-02-08	24
2020-02-09	7

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 31 January to 9 February 2020 ranked by margin
Palmer 3 ESE, 02-05	54.4 mm (2.1 in)
Startup 1 E, 02-06	40.4 mm (1.6 in)
Palmer 3 ESE, 02-06	38.6 mm (1.5 in)
Meacham, 02-08	28.0 mm (1.1 in)
Riggins, 02-06	20.4 mm (0.8 in)
Hebgen Dam, 02-05	19.9 mm (0.8 in)
County Line, 02-05	17.8 mm (0.7 in)
Walla Walla Rgnl AP, 02-06	15.5 mm (0.6 in)
Cabin Creek, 02-08	15.3 mm (0.6 in)
Lamar Rs, 02-08	15.3 mm (0.6 in)
Long Creek, 02-05	14.7 mm (0.6 in)
Cottonwood 2 WSW, 02-06	13.8 mm (0.5 in)
Yampa, 02-07	12.5 mm (0.5 in)
Pomeroy, 02-06	11.2 mm (0.4 in)
Tower Falls, 02-06	11.2 mm (0.4 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, 31 January to 9 February 2020
Margin (mm)	Years the old record stood
20	112
9	57
9	120
20	74
13	70
40	73
54	74
15	60
11	66
10	92
15	31
18	33
8	80
28	54
16	70
14	69
15	34
39	76
10	66
11	80
29	14
13	52
15	36
5	81
16	74
6	101
43	38
20	36
4	101
19	41
13	17
12	52
22	112
20	24
36	34
11	52
19	70
5	108
25	40
15	29
23	33
38	29
10	36
6	58
15	4
10	52
10	38
46	24
4	123
6	52
5	120
5	121
7	70
5	61
18	22
15	29
25	12
31	24
4	96
18	17
8	69
7	58
13	40
13	29
13	33
21	80
8	53
48	40
13	19
20	38
18	17
20	24
10	40
13	33
33	12
16	17
19	2
9	1
6	44
8	74
20	36
38	9
15	24
8	40
3	63
2	100
34	2
23	29
1	100
7	2
2	110
9	61
15	34
28	5
20	0
18	17
33	12
1	93
1	104
2	96
2	98
30	54
1	67
25	12
8	37
18	13
64	24
11	6
3	66
10	9
3	80
15	24
2	101
1	102
8	25
2	65
8	1
12	33
1	100
12	2
8	33
33	40
4	58
8	24
8	28
2	64
1	57
8	80
13	36
13	12
31	2
33	0
15	21
5	60
1	93
5	58
3	73
5	84
21	28
8	74
15	8
36	0
13	33
13	2
7	24
5	21
6	44
11	25
1	84
10	29
28	2
25	2
15	33
7	44
1	81
3	68
5	48
3	80
11	32
1	72
3	48
8	22
18	13
15	8
8	40
5	50
4	48
4	60
4	48
18	12
8	0
13	9
8	33
13	36
20	8
10	40
8	44
4	37
20	20
5	24
20	12
3	64
10	24
10	33
1	74
2	69
2	58
2	76
2	33
10	32
10	12
8	15
10	40
36	2
7	8
4	53
11	18
12	0
3	60
1	64

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 31 January to 9 February 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, 31 January to 9 February 2020 (this event)	519 records

Every Record Set

20 of 519

Every record set or tied during Extreme rain in United States, 31 January to 9 February 2020, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2020-02-02	Chilly Barton Flat	Record daily precipitation	20.3 mm (0.8 in)	9.1 mm (0.36 in)	57	20 of 100 (Routine)
2020-02-05	Coupeville 1 S	Record daily precipitation	42.2 mm (1.7 in)	9.2 mm (0.36 in)	120	73 of 100 (Major)
2020-02-05	Hebgen Dam	Record daily precipitation	31.8 mm (1.3 in)	19.9 mm (0.8 in)	74	72 of 100 (Major)
2020-02-05	Palmer 3 ESE	Record daily precipitation	88.9 mm (3.5 in)	54.4 mm (2.1 in)	74	70 of 100 (Major)
2020-02-05	County Line	Record daily precipitation	55.9 mm (2.2 in)	17.8 mm (0.7 in)	33	64 of 100 (Major)
2020-02-05	Long Creek	Record daily precipitation	18.5 mm (0.7 in)	14.7 mm (0.6 in)	34	20 of 100 (Routine)
2020-02-05	Pendleton	Record daily precipitation	16.3 mm (0.6 in)	10.2 mm (0.4 in)	66	20 of 100 (Routine)
2020-02-06	Riggins	Record daily precipitation	29.5 mm (1.2 in)	20.4 mm (0.8 in)	112	80 of 100 (Exceptional)
2020-02-06	Startup 1 E	Record daily precipitation	71.4 mm (2.8 in)	40.4 mm (1.6 in)	73	71 of 100 (Major)
2020-02-06	Palmer 3 ESE	Record daily precipitation	89.4 mm (3.5 in)	38.6 mm (1.5 in)	76	60 of 100 (Major)
2020-02-06	Pomeroy	Record daily precipitation	31.0 mm (1.2 in)	11.2 mm (0.4 in)	80	58 of 100 (Notable)
2020-02-06	Hayden	Record daily precipitation	17.0 mm (0.7 in)	9.9 mm (0.39 in)	92	20 of 100 (Routine)
2020-02-06	Cottonwood 2 WSW	Record daily precipitation	22.4 mm (0.9 in)	13.8 mm (0.5 in)	69	20 of 100 (Routine)
2020-02-06	Union	Record daily precipitation	24.1 mm (0.9 in)	8.4 mm (0.33 in)	80	20 of 100 (Routine)
2020-02-06	Tower Falls	Record daily precipitation	17.0 mm (0.7 in)	11.2 mm (0.4 in)	66	20 of 100 (Routine)
2020-02-06	Walla Walla Rgnl AP	Record daily precipitation	23.1 mm (0.9 in)	15.5 mm (0.6 in)	70	20 of 100 (Routine)
2020-02-07	Yampa	Record daily precipitation	17.3 mm (0.7 in)	12.5 mm (0.5 in)	70	20 of 100 (Routine)
2020-02-08	Cabin Creek	Record daily precipitation	35.6 mm (1.4 in)	15.3 mm (0.6 in)	31	64 of 100 (Major)
2020-02-08	Meacham	Record daily precipitation	39.9 mm (1.6 in)	28.0 mm (1.1 in)	54	63 of 100 (Major)
2020-02-08	Lamar Rs	Record daily precipitation	22.9 mm (0.9 in)	15.3 mm (0.6 in)	60	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 519 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
20	112
9	57
9	120
20	74
13	70
40	73
54	74
15	60
11	66
10	92
15	31
18	33
8	80
28	54
16	70
14	69
15	34
39	76
10	66
11	80
29	14
13	52
15	36
5	81
16	74
6	101
43	38
20	36
4	101
19	41
13	17
12	52
22	112
20	24
36	34
11	52
19	70
5	108
25	40
15	29
23	33
38	29
10	36
6	58
15	4
10	52
10	38
46	24
4	123
6	52
5	120
5	121
7	70
5	61
18	22
15	29
25	12
31	24
4	96
18	17
8	69
7	58
13	40
13	29
13	33
21	80
8	53
48	40
13	19
20	38
18	17
20	24
10	40
13	33
33	12
16	17
19	2
9	1
6	44
8	74
20	36
38	9
15	24
8	40
3	63
2	100
34	2
23	29
1	100
7	2
2	110
9	61
15	34
28	5
20	0
18	17
33	12
1	93
1	104
2	96
2	98
30	54
1	67
25	12
8	37
18	13
64	24
11	6
3	66
10	9
3	80
15	24
2	101
1	102
8	25
2	65
8	1
12	33
1	100
12	2
8	33
33	40
4	58
8	24
8	28
2	64
1	57
8	80
13	36
13	12
31	2
33	0
15	21
5	60
1	93
5	58
3	73
5	84
21	28
8	74
15	8
36	0
13	33
13	2
7	24
5	21
6	44
11	25
1	84
10	29
28	2
25	2
15	33
7	44
1	81
3	68
5	48
3	80
11	32
1	72
3	48
8	22
18	13
15	8
8	40
5	50
4	48
4	60
4	48
18	12
8	0
13	9
8	33
13	36
20	8
10	40
8	44
4	37
20	20
5	24
20	12
3	64
10	24
10	33
1	74
2	69
2	58
2	76
2	33
10	32
10	12
8	15
10	40
36	2
7	8
4	53
11	18
12	0
3	60
1	64

Margin (mm)	Years the old record stood
20	112
9	57
9	120
20	74
13	70
40	73
54	74
15	60
11	66
10	92
15	31
18	33
8	80
28	54
16	70
14	69
15	34
39	76
10	66
11	80
29	14
13	52
15	36
5	81
16	74
6	101
43	38
20	36
4	101
19	41
13	17
12	52
22	112
20	24
36	34
11	52
19	70
5	108
25	40
15	29
23	33
38	29
10	36
6	58
15	4
10	52
10	38
46	24
4	123
6	52
5	120
5	121
7	70
5	61
18	22
15	29
25	12
31	24
4	96
18	17
8	69
7	58
13	40
13	29
13	33
21	80
8	53
48	40
13	19
20	38
18	17
20	24
10	40
13	33
33	12
16	17
19	2
9	1
6	44
8	74
20	36
38	9
15	24
8	40
3	63
2	100
34	2
23	29
1	100
7	2
2	110
9	61
15	34
28	5
20	0
18	17
33	12
1	93
1	104
2	96
2	98
30	54
1	67
25	12
8	37
18	13
64	24
11	6
3	66
10	9
3	80
15	24
2	101
1	102
8	25
2	65
8	1
12	33
1	100
12	2
8	33
33	40
4	58
8	24
8	28
2	64
1	57
8	80
13	36
13	12
31	2
33	0
15	21
5	60
1	93
5	58
3	73
5	84
21	28
8	74
15	8
36	0
13	33
13	2
7	24
5	21
6	44
11	25
1	84
10	29
28	2
25	2
15	33
7	44
1	81
3	68
5	48
3	80
11	32
1	72
3	48
8	22
18	13
15	8
8	40
5	50
4	48
4	60
4	48
18	12
8	0
13	9
8	33
13	36
20	8
10	40
8	44
4	37
20	20
5	24
20	12
3	64
10	24
10	33
1	74
2	69
2	58
2	76
2	33
10	32
10	12
8	15
10	40
36	2
7	8
4	53
11	18
12	0
3	60
1	64

Margin (mm)	Years the old record stood
20	112
9	57
9	120
20	74
13	70
40	73
54	74
15	60
11	66
10	92
15	31
18	33
8	80
28	54
16	70
14	69
15	34
39	76
10	66
11	80
29	14
13	52
15	36
5	81
16	74
6	101
43	38
20	36
4	101
19	41
13	17
12	52
22	112
20	24
36	34
11	52
19	70
5	108
25	40
15	29
23	33
38	29
10	36
6	58
15	4
10	52
10	38
46	24
4	123
6	52
5	120
5	121
7	70
5	61
18	22
15	29
25	12
31	24
4	96
18	17
8	69
7	58
13	40
13	29
13	33
21	80
8	53
48	40
13	19
20	38
18	17
20	24
10	40
13	33
33	12
16	17
19	2
9	1
6	44
8	74
20	36
38	9
15	24
8	40
3	63
2	100
34	2
23	29
1	100
7	2
2	110
9	61
15	34
28	5
20	0
18	17
33	12
1	93
1	104
2	96
2	98
30	54
1	67
25	12
8	37
18	13
64	24
11	6
3	66
10	9
3	80
15	24
2	101
1	102
8	25
2	65
8	1
12	33
1	100
12	2
8	33
33	40
4	58
8	24
8	28
2	64
1	57
8	80
13	36
13	12
31	2
33	0
15	21
5	60
1	93
5	58
3	73
5	84
21	28
8	74
15	8
36	0
13	33
13	2
7	24
5	21
6	44
11	25
1	84
10	29
28	2
25	2
15	33
7	44
1	81
3	68
5	48
3	80
11	32
1	72
3	48
8	22
18	13
15	8
8	40
5	50
4	48
4	60
4	48
18	12
8	0
13	9
8	33
13	36
20	8
10	40
8	44
4	37
20	20
5	24
20	12
3	64
10	24
10	33
1	74
2	69
2	58
2	76
2	33
10	32
10	12
8	15
10	40
36	2
7	8
4	53
11	18
12	0
3	60
1	64