Extreme rain in United States, 23 February to 6 March 2018

Name: Extreme rain in United States, 23 February to 6 March 2018
Start: 2018-02-23
End: 2018-03-06
Location: United States

Extreme rain in United States, 23 February to 6 March 2018: 378 records at 353 stations, peak on 6 March 2018. Closed.

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

Key Facts

Extreme rain in United States, 23 February to 6 March 2018 set or tied 378 station records at 353 stations.
It ran from 23 February 2018 to 6 March 2018 (12 days) and its peak day was 6 March 2018.
Status: closed.
Libby 32 SSE set a daily record precipitation of 44.5 mm (1.8 in) on 4 March 2018.
The busiest day was 6 March 2018 with 67 records.
The oldest broken record in the ranked list had stood for 117 years.

Footprint

23 February to 6 March 2018

The area covered by Extreme rain in United States, 23 February to 6 March 2018 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, 23 February to 6 March 2018: stations that set records in the event
Station	Type	Value	Date
Libby 32 SSE	Record daily precipitation	44.5 mm (1.8 in)	2018-03-04
Steele 4N	Record daily precipitation	30.7 mm (1.2 in)	2018-03-05
N Fk Rs	Record daily precipitation	99.1 mm (3.9 in)	2018-03-02
Oakes	Record daily precipitation	43.7 mm (1.7 in)	2018-03-06
Riggins	Record daily precipitation	27.7 mm (1.1 in)	2018-03-02
Springdale	Record daily precipitation	51.8 mm (2.0 in)	2018-03-04
Clear Lake	Record daily precipitation	38.1 mm (1.5 in)	2018-03-05
Mackay Lost Rvr Rs	Record daily precipitation	25.9 mm (1.0 in)	2018-03-02
Center 4SE	Record daily precipitation	35.6 mm (1.4 in)	2018-03-05
Milan 1NW	Record daily precipitation	28.4 mm (1.1 in)	2018-03-05
Forman 5 SSE	Record daily precipitation	29.5 mm (1.2 in)	2018-03-06
Mullan Pass Vor/Dme	Record daily precipitation	52.3 mm (2.1 in)	2018-02-25
Aberdeen Exp STN	Record daily precipitation	33.0 mm (1.3 in)	2018-03-03
Malta 35 S	Record daily precipitation	26.7 mm (1.1 in)	2018-03-05
Cedarville	Record daily precipitation	12.7 mm (0.5 in)	2018-02-23
Jackson	Record daily precipitation	15.7 mm (0.6 in)	2018-03-04
Hallock	Record daily precipitation	17.3 mm (0.7 in)	2018-03-05
Keene 3S	Record daily precipitation	15.7 mm (0.6 in)	2018-03-05
Mora	Record daily precipitation	21.6 mm (0.9 in)	2018-03-06
Underwood	Record daily precipitation	23.1 mm (0.9 in)	2018-03-06

Records per Day

Peak day 67

Records set or tied each day from 23 February 2018 to 6 March 2018. The most in one day was 67 on 6 March 2018.

Records per day during Extreme rain in United States, 23 February to 6 March 2018
Date	Records
2018-02-23	1
2018-02-24	9
2018-02-25	55
2018-02-26	18
2018-02-27	2
2018-02-28	4
2018-03-01	53
2018-03-02	49
2018-03-03	21
2018-03-04	49
2018-03-05	50
2018-03-06	67

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 23 February to 6 March 2018 ranked by margin
N Fk Rs, 03-02	49.6 mm (2.0 in)
Oakes, 03-06	36.8 mm (1.4 in)
Mullan Pass Vor/Dme, 02-25	33.0 mm (1.3 in)
Center 4SE, 03-05	28.0 mm (1.1 in)
Clear Lake, 03-05	27.7 mm (1.1 in)
Libby 32 SSE, 03-04	24.7 mm (1.0 in)
Forman 5 SSE, 03-06	18.6 mm (0.7 in)
Steele 4N, 03-05	17.5 mm (0.7 in)
Springdale, 03-04	16.5 mm (0.6 in)
Underwood, 03-06	14.5 mm (0.6 in)
Mackay Lost Rvr Rs, 03-02	14.0 mm (0.6 in)
Riggins, 03-02	11.7 mm (0.5 in)
Hallock, 03-05	9.7 mm (0.38 in)
Keene 3S, 03-05	9.3 mm (0.37 in)
Milan 1NW, 03-05	8.1 mm (0.32 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

378 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, 23 February to 6 March 2018
Margin (mm)	Years the old record stood
25	60
18	96
50	80
37	44
12	83
17	3
28	35
14	35
28	25
8	103
15	44
10	73
6	109
19	35
5	99
33	4
9	67
6	73
2	71
6	40
15	80
18	35
6	73
23	25
9	76
9	72
31	1
10	72
1	100
23	32
4	107
36	44
4	76
1	117
1	109
4	80
18	53
5	72
4	73
0	97
3	84
2	80
9	35
17	35
7	4
9	56
6	40
21	45
1	80
5	48
9	19
1	80
18	35
13	20
2	77
7	56
5	56
22	47
12	44
18	36
11	4
2	73
13	44
6	48
1	80
6	56
4	69
6	3
6	44
13	32
12	44
2	72
14	35
7	35
2	76
1	76
8	32
7	27
10	35
14	41
6	21
7	25
3	45
20	36
6	59
5	32
4	59
4	29
5	21
2	67
4	12
20	18
10	18
5	44
12	28
7	7
4	56
2	56
1	72
2	56
11	25
5	35
10	35
20	21
1	72
6	35
1	56
4	35
9	25
4	35
12	21
5	35
18	24
13	20
9	36
1	56
8	23
8	25
3	40
2	44
6	35
5	35
2	56
1	60
18	19
10	34
5	27
3	31
2	35
11	27
11	35
6	20
5	35
4	35
6	24
5	32
13	20
10	20
1	61
5	25
5	44
1	60
18	44
2	48
2	14
3	35
5	52
3	37
13	20
8	36
13	33
8	35
10	25
5	36
2	35
1	44
6	8
7	35
10	20
28	6
3	19
4	25
7	44
3	52
6	35
3	35
4	27
2	45
5	32
5	27
5	32
5	15
8	35
8	11
3	22
3	44
2	27
2	48
2	35
1	40
4	21
5	16
3	23
3	35
5	33
13	35
18	11
3	25
1	48
3	16
6	4
6	25
1	35
4	21
2	44
1	35
5	25
3	15
3	28
3	37

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 23 February to 6 March 2018 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, 23 February to 6 March 2018 (this event)	378 records

Every Record Set

20 of 378

Every record set or tied during Extreme rain in United States, 23 February to 6 March 2018, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2018-02-23	Cedarville	Record daily precipitation	12.7 mm (0.5 in)	4.8 mm (0.19 in)	99	20 of 100 (Routine)
2018-02-25	Mullan Pass Vor/Dme	Record daily precipitation	52.3 mm (2.1 in)	33.0 mm (1.3 in)	4	49 of 100 (Notable)
2018-03-02	N Fk Rs	Record daily precipitation	99.1 mm (3.9 in)	49.6 mm (2.0 in)	80	63 of 100 (Major)
2018-03-02	Riggins	Record daily precipitation	27.7 mm (1.1 in)	11.7 mm (0.5 in)	83	61 of 100 (Major)
2018-03-02	Mackay Lost Rvr Rs	Record daily precipitation	25.9 mm (1.0 in)	14.0 mm (0.6 in)	35	55 of 100 (Notable)
2018-03-03	Aberdeen Exp STN	Record daily precipitation	33.0 mm (1.3 in)	2.0 mm (0.08 in)	71	46 of 100 (Notable)
2018-03-04	Libby 32 SSE	Record daily precipitation	44.5 mm (1.8 in)	24.7 mm (1.0 in)	60	68 of 100 (Major)
2018-03-04	Springdale	Record daily precipitation	51.8 mm (2.0 in)	16.5 mm (0.6 in)	3	56 of 100 (Notable)
2018-03-04	Jackson	Record daily precipitation	15.7 mm (0.6 in)	6.3 mm (0.25 in)	73	20 of 100 (Routine)
2018-03-05	Steele 4N	Record daily precipitation	30.7 mm (1.2 in)	17.5 mm (0.7 in)	96	64 of 100 (Major)
2018-03-05	Clear Lake	Record daily precipitation	38.1 mm (1.5 in)	27.7 mm (1.1 in)	35	56 of 100 (Notable)
2018-03-05	Center 4SE	Record daily precipitation	35.6 mm (1.4 in)	28.0 mm (1.1 in)	25	55 of 100 (Notable)
2018-03-05	Milan 1NW	Record daily precipitation	28.4 mm (1.1 in)	8.1 mm (0.32 in)	103	52 of 100 (Notable)
2018-03-05	Malta 35 S	Record daily precipitation	26.7 mm (1.1 in)	6.1 mm (0.24 in)	40	46 of 100 (Notable)
2018-03-05	Hallock	Record daily precipitation	17.3 mm (0.7 in)	9.7 mm (0.38 in)	73	20 of 100 (Routine)
2018-03-05	Keene 3S	Record daily precipitation	15.7 mm (0.6 in)	9.3 mm (0.37 in)	67	20 of 100 (Routine)
2018-03-06	Oakes	Record daily precipitation	43.7 mm (1.7 in)	36.8 mm (1.4 in)	44	62 of 100 (Major)
2018-03-06	Forman 5 SSE	Record daily precipitation	29.5 mm (1.2 in)	18.6 mm (0.7 in)	35	50 of 100 (Notable)
2018-03-06	Mora	Record daily precipitation	21.6 mm (0.9 in)	6.4 mm (0.25 in)	109	20 of 100 (Routine)
2018-03-06	Underwood	Record daily precipitation	23.1 mm (0.9 in)	14.5 mm (0.6 in)	44	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 378 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
25	60
18	96
50	80
37	44
12	83
17	3
28	35
14	35
28	25
8	103
15	44
10	73
6	109
19	35
5	99
33	4
9	67
6	73
2	71
6	40
15	80
18	35
6	73
23	25
9	76
9	72
31	1
10	72
1	100
23	32
4	107
36	44
4	76
1	117
1	109
4	80
18	53
5	72
4	73
0	97
3	84
2	80
9	35
17	35
7	4
9	56
6	40
21	45
1	80
5	48
9	19
1	80
18	35
13	20
2	77
7	56
5	56
22	47
12	44
18	36
11	4
2	73
13	44
6	48
1	80
6	56
4	69
6	3
6	44
13	32
12	44
2	72
14	35
7	35
2	76
1	76
8	32
7	27
10	35
14	41
6	21
7	25
3	45
20	36
6	59
5	32
4	59
4	29
5	21
2	67
4	12
20	18
10	18
5	44
12	28
7	7
4	56
2	56
1	72
2	56
11	25
5	35
10	35
20	21
1	72
6	35
1	56
4	35
9	25
4	35
12	21
5	35
18	24
13	20
9	36
1	56
8	23
8	25
3	40
2	44
6	35
5	35
2	56
1	60
18	19
10	34
5	27
3	31
2	35
11	27
11	35
6	20
5	35
4	35
6	24
5	32
13	20
10	20
1	61
5	25
5	44
1	60
18	44
2	48
2	14
3	35
5	52
3	37
13	20
8	36
13	33
8	35
10	25
5	36
2	35
1	44
6	8
7	35
10	20
28	6
3	19
4	25
7	44
3	52
6	35
3	35
4	27
2	45
5	32
5	27
5	32
5	15
8	35
8	11
3	22
3	44
2	27
2	48
2	35
1	40
4	21
5	16
3	23
3	35
5	33
13	35
18	11
3	25
1	48
3	16
6	4
6	25
1	35
4	21
2	44
1	35
5	25
3	15
3	28
3	37

Margin (mm)	Years the old record stood
25	60
18	96
50	80
37	44
12	83
17	3
28	35
14	35
28	25
8	103
15	44
10	73
6	109
19	35
5	99
33	4
9	67
6	73
2	71
6	40
15	80
18	35
6	73
23	25
9	76
9	72
31	1
10	72
1	100
23	32
4	107
36	44
4	76
1	117
1	109
4	80
18	53
5	72
4	73
0	97
3	84
2	80
9	35
17	35
7	4
9	56
6	40
21	45
1	80
5	48
9	19
1	80
18	35
13	20
2	77
7	56
5	56
22	47
12	44
18	36
11	4
2	73
13	44
6	48
1	80
6	56
4	69
6	3
6	44
13	32
12	44
2	72
14	35
7	35
2	76
1	76
8	32
7	27
10	35
14	41
6	21
7	25
3	45
20	36
6	59
5	32
4	59
4	29
5	21
2	67
4	12
20	18
10	18
5	44
12	28
7	7
4	56
2	56
1	72
2	56
11	25
5	35
10	35
20	21
1	72
6	35
1	56
4	35
9	25
4	35
12	21
5	35
18	24
13	20
9	36
1	56
8	23
8	25
3	40
2	44
6	35
5	35
2	56
1	60
18	19
10	34
5	27
3	31
2	35
11	27
11	35
6	20
5	35
4	35
6	24
5	32
13	20
10	20
1	61
5	25
5	44
1	60
18	44
2	48
2	14
3	35
5	52
3	37
13	20
8	36
13	33
8	35
10	25
5	36
2	35
1	44
6	8
7	35
10	20
28	6
3	19
4	25
7	44
3	52
6	35
3	35
4	27
2	45
5	32
5	27
5	32
5	15
8	35
8	11
3	22
3	44
2	27
2	48
2	35
1	40
4	21
5	16
3	23
3	35
5	33
13	35
18	11
3	25
1	48
3	16
6	4
6	25
1	35
4	21
2	44
1	35
5	25
3	15
3	28
3	37

Margin (mm)	Years the old record stood
25	60
18	96
50	80
37	44
12	83
17	3
28	35
14	35
28	25
8	103
15	44
10	73
6	109
19	35
5	99
33	4
9	67
6	73
2	71
6	40
15	80
18	35
6	73
23	25
9	76
9	72
31	1
10	72
1	100
23	32
4	107
36	44
4	76
1	117
1	109
4	80
18	53
5	72
4	73
0	97
3	84
2	80
9	35
17	35
7	4
9	56
6	40
21	45
1	80
5	48
9	19
1	80
18	35
13	20
2	77
7	56
5	56
22	47
12	44
18	36
11	4
2	73
13	44
6	48
1	80
6	56
4	69
6	3
6	44
13	32
12	44
2	72
14	35
7	35
2	76
1	76
8	32
7	27
10	35
14	41
6	21
7	25
3	45
20	36
6	59
5	32
4	59
4	29
5	21
2	67
4	12
20	18
10	18
5	44
12	28
7	7
4	56
2	56
1	72
2	56
11	25
5	35
10	35
20	21
1	72
6	35
1	56
4	35
9	25
4	35
12	21
5	35
18	24
13	20
9	36
1	56
8	23
8	25
3	40
2	44
6	35
5	35
2	56
1	60
18	19
10	34
5	27
3	31
2	35
11	27
11	35
6	20
5	35
4	35
6	24
5	32
13	20
10	20
1	61
5	25
5	44
1	60
18	44
2	48
2	14
3	35
5	52
3	37
13	20
8	36
13	33
8	35
10	25
5	36
2	35
1	44
6	8
7	35
10	20
28	6
3	19
4	25
7	44
3	52
6	35
3	35
4	27
2	45
5	32
5	27
5	32
5	15
8	35
8	11
3	22
3	44
2	27
2	48
2	35
1	40
4	21
5	16
3	23
3	35
5	33
13	35
18	11
3	25
1	48
3	16
6	4
6	25
1	35
4	21
2	44
1	35
5	25
3	15
3	28
3	37