Extreme rain in United States, 18 to 24 September 2022

Name: Extreme rain in United States, 18 to 24 September 2022
Start: 2022-09-18
End: 2022-09-24
Location: United States

Extreme rain in United States, 18 to 24 September 2022: 343 records at 310 stations, peak on 22 September 2022. Closed.

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

Key Facts

Extreme rain in United States, 18 to 24 September 2022 set or tied 343 station records at 310 stations.
It ran from 18 September 2022 to 24 September 2022 (7 days) and its peak day was 22 September 2022.
Status: closed.
Davis 2 WSW Exp Farm set a daily record precipitation of 40.1 mm (1.6 in) on 20 September 2022.
The busiest day was 22 September 2022 with 126 records.
The oldest broken record in the ranked list had stood for 125 years.

Footprint

18 to 24 September 2022

The area covered by Extreme rain in United States, 18 to 24 September 2022 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, 18 to 24 September 2022: stations that set records in the event
Station	Type	Value	Date
Davis 2 WSW Exp Farm	Record daily precipitation	40.1 mm (1.6 in)	2022-09-20
Lompoc	Record daily precipitation	51.1 mm (2.0 in)	2022-09-19
Bigfork 13 S	Record daily precipitation	51.6 mm (2.0 in)	2022-09-22
Missoula 6 NW WFO	Record daily precipitation	29.5 mm (1.2 in)	2022-09-22
Missoula Intl AP	Record daily precipitation	28.2 mm (1.1 in)	2022-09-22
Mullan Pass Vor/Dme	Record daily precipitation	37.8 mm (1.5 in)	2022-09-22
Stony Gorge Rsvr	Record daily precipitation	34.3 mm (1.4 in)	2022-09-19
Thompson Falls Ph	Record daily precipitation	26.4 mm (1.0 in)	2022-09-22
Torreon Navajo Mission	Record daily precipitation	57.4 mm (2.3 in)	2022-09-22
Trinity Rvr Hatchery	Record daily precipitation	58.4 mm (2.3 in)	2022-09-19
Lahontan Dam	Record daily precipitation	31.5 mm (1.2 in)	2022-09-21
San Luis Obispo Poly	Record daily precipitation	33.0 mm (1.3 in)	2022-09-19
Skq Dam	Record daily precipitation	38.1 mm (1.5 in)	2022-09-22
Virginia City	Record daily precipitation	25.9 mm (1.0 in)	2022-09-22
Lookout	Record daily precipitation	43.2 mm (1.7 in)	2022-09-22
Chico UNIV Farm	Record daily precipitation	16.3 mm (0.6 in)	2022-09-20
Scipio	Record daily precipitation	20.3 mm (0.8 in)	2022-09-21
Prescott	Record daily precipitation	24.1 mm (0.9 in)	2022-09-22
Saguache	Record daily precipitation	13.2 mm (0.5 in)	2022-09-22
Lewiston AP	Record daily precipitation	13.7 mm (0.5 in)	2022-09-22

Records per Day

Peak day 126

Records set or tied each day from 18 September 2022 to 24 September 2022. The most in one day was 126 on 22 September 2022.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 18 to 24 September 2022 ranked by margin
Trinity Rvr Hatchery, 09-19	43.2 mm (1.7 in)
Lookout, 09-22	35.6 mm (1.4 in)
Bigfork 13 S, 09-22	34.1 mm (1.3 in)
Davis 2 WSW Exp Farm, 09-20	33.2 mm (1.3 in)
Stony Gorge Rsvr, 09-19	25.7 mm (1.0 in)
Skq Dam, 09-22	23.9 mm (0.9 in)
San Luis Obispo Poly, 09-19	23.6 mm (0.9 in)
Lompoc, 09-19	21.9 mm (0.9 in)
Mullan Pass Vor/Dme, 09-22	21.5 mm (0.8 in)
Torreon Navajo Mission, 09-22	18.5 mm (0.7 in)
Missoula Intl AP, 09-22	17.5 mm (0.7 in)
Prescott, 09-22	17.2 mm (0.7 in)
Thompson Falls Ph, 09-22	16.7 mm (0.7 in)
Missoula 6 NW WFO, 09-22	16.3 mm (0.6 in)
Chico UNIV Farm, 09-20	15.5 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

343 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, 18 to 24 September 2022
Margin (mm)	Years the old record stood
33	125
22	46
34	76
16	123
18	71
22	77
26	37
17	53
19	50
13	104
17	108
43	36
16	96
10	77
6	67
24	63
24	13
11	76
36	24
10	73
33	15
28	65
27	59
13	48
15	55
26	55
48	13
4	59
13	69
9	77
23	40
8	101
28	37
33	13
6	77
31	15
19	63
15	52
20	13
21	60
21	65
14	65
13	36
2	104
30	25
20	40
9	81
25	13
19	63
5	80
6	69
30	16
1	92
16	40
31	0
8	44
4	76
3	76
6	69
10	40
7	76
7	68
10	37
19	44
0	88
1	89
4	65
18	44
7	65
3	50
14	13
30	13
6	48
2	76
7	48
5	63
4	45
8	52
10	37
8	69
21	44
12	44
9	59
10	63
18	40
15	37
13	32
20	40
2	69
2	65
13	15
15	4
13	15
1	77
19	12
3	65
0	71
10	13
10	21
15	24
1	71
11	35
11	44
1	69
11	32
5	59
0	75
12	17
1	68
4	55
16	8
13	13
13	37
10	37
1	45
1	69
1	60
3	60
8	44
17	15
10	24
8	56
5	63
10	39
21	36
1	63
3	59
10	36
23	8
15	31
25	13
25	13
8	40
4	48
5	52
0	63
2	56
10	15
13	15
5	33
8	23
8	40
10	40
5	8
4	53
8	41
3	38
8	37
10	32
5	37
15	8
3	48
6	44
4	59
4	33
5	33
3	44
5	44
4	52
4	49
2	59
13	37
13	5
5	24
8	4
23	5
5	32
3	52
6	24
1	57
8	24
15	16
13	36
8	24
2	56
10	17
5	15
2	56
11	16
0	48
7	5
6	51
8	15
1	49
12	8
10	16
13	31
5	36
5	31
3	45
5	32
2	36
8	8
7	4
8	5
6	41
9	16
10	24
5	40
8	15

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 18 to 24 September 2022 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, 18 to 24 September 2022 (this event)	343 records

Every Record Set

20 of 343

Every record set or tied during Extreme rain in United States, 18 to 24 September 2022, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2022-09-19	Lompoc	Record daily precipitation	51.1 mm (2.0 in)	21.9 mm (0.9 in)	46	72 of 100 (Major)
2022-09-19	Stony Gorge Rsvr	Record daily precipitation	34.3 mm (1.4 in)	25.7 mm (1.0 in)	37	60 of 100 (Major)
2022-09-19	Trinity Rvr Hatchery	Record daily precipitation	58.4 mm (2.3 in)	43.2 mm (1.7 in)	36	54 of 100 (Notable)
2022-09-19	San Luis Obispo Poly	Record daily precipitation	33.0 mm (1.3 in)	23.6 mm (0.9 in)	63	51 of 100 (Notable)
2022-09-20	Davis 2 WSW Exp Farm	Record daily precipitation	40.1 mm (1.6 in)	33.2 mm (1.3 in)	125	75 of 100 (Major)
2022-09-20	Chico UNIV Farm	Record daily precipitation	16.3 mm (0.6 in)	15.5 mm (0.6 in)	96	20 of 100 (Routine)
2022-09-21	Lahontan Dam	Record daily precipitation	31.5 mm (1.2 in)	5.6 mm (0.22 in)	67	52 of 100 (Notable)
2022-09-21	Scipio	Record daily precipitation	20.3 mm (0.8 in)	12.7 mm (0.5 in)	104	20 of 100 (Routine)
2022-09-22	Bigfork 13 S	Record daily precipitation	51.6 mm (2.0 in)	34.1 mm (1.3 in)	76	71 of 100 (Major)
2022-09-22	Missoula 6 NW WFO	Record daily precipitation	29.5 mm (1.2 in)	16.3 mm (0.6 in)	123	69 of 100 (Major)
2022-09-22	Missoula Intl AP	Record daily precipitation	28.2 mm (1.1 in)	17.5 mm (0.7 in)	71	67 of 100 (Major)
2022-09-22	Mullan Pass Vor/Dme	Record daily precipitation	37.8 mm (1.5 in)	21.5 mm (0.8 in)	77	61 of 100 (Major)
2022-09-22	Thompson Falls Ph	Record daily precipitation	26.4 mm (1.0 in)	16.7 mm (0.7 in)	53	60 of 100 (Major)
2022-09-22	Torreon Navajo Mission	Record daily precipitation	57.4 mm (2.3 in)	18.5 mm (0.7 in)	50	60 of 100 (Major)
2022-09-22	Skq Dam	Record daily precipitation	38.1 mm (1.5 in)	23.9 mm (0.9 in)	13	51 of 100 (Notable)
2022-09-22	Virginia City	Record daily precipitation	25.9 mm (1.0 in)	10.7 mm (0.4 in)	76	51 of 100 (Notable)
2022-09-22	Lookout	Record daily precipitation	43.2 mm (1.7 in)	35.6 mm (1.4 in)	24	51 of 100 (Notable)
2022-09-22	Prescott	Record daily precipitation	24.1 mm (0.9 in)	17.2 mm (0.7 in)	108	20 of 100 (Routine)
2022-09-22	Saguache	Record daily precipitation	13.2 mm (0.5 in)	9.9 mm (0.39 in)	77	20 of 100 (Routine)
2022-09-22	Lewiston AP	Record daily precipitation	13.7 mm (0.5 in)	9.9 mm (0.39 in)	73	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 343 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.

Date	Records
2022-09-18	7
2022-09-19	46
2022-09-20	65
2022-09-21	84
2022-09-22	126
2022-09-23	13
2022-09-24	2

Margin (mm)	Years the old record stood
33	125
22	46
34	76
16	123
18	71
22	77
26	37
17	53
19	50
13	104
17	108
43	36
16	96
10	77
6	67
24	63
24	13
11	76
36	24
10	73
33	15
28	65
27	59
13	48
15	55
26	55
48	13
4	59
13	69
9	77
23	40
8	101
28	37
33	13
6	77
31	15
19	63
15	52
20	13
21	60
21	65
14	65
13	36
2	104
30	25
20	40
9	81
25	13
19	63
5	80
6	69
30	16
1	92
16	40
31	0
8	44
4	76
3	76
6	69
10	40
7	76
7	68
10	37
19	44
0	88
1	89
4	65
18	44
7	65
3	50
14	13
30	13
6	48
2	76
7	48
5	63
4	45
8	52
10	37
8	69
21	44
12	44
9	59
10	63
18	40
15	37
13	32
20	40
2	69
2	65
13	15
15	4
13	15
1	77
19	12
3	65
0	71
10	13
10	21
15	24
1	71
11	35
11	44
1	69
11	32
5	59
0	75
12	17
1	68
4	55
16	8
13	13
13	37
10	37
1	45
1	69
1	60
3	60
8	44
17	15
10	24
8	56
5	63
10	39
21	36
1	63
3	59
10	36
23	8
15	31
25	13
25	13
8	40
4	48
5	52
0	63
2	56
10	15
13	15
5	33
8	23
8	40
10	40
5	8
4	53
8	41
3	38
8	37
10	32
5	37
15	8
3	48
6	44
4	59
4	33
5	33
3	44
5	44
4	52
4	49
2	59
13	37
13	5
5	24
8	4
23	5
5	32
3	52
6	24
1	57
8	24
15	16
13	36
8	24
2	56
10	17
5	15
2	56
11	16
0	48
7	5
6	51
8	15
1	49
12	8
10	16
13	31
5	36
5	31
3	45
5	32
2	36
8	8
7	4
8	5
6	41
9	16
10	24
5	40
8	15

Margin (mm)	Years the old record stood
33	125
22	46
34	76
16	123
18	71
22	77
26	37
17	53
19	50
13	104
17	108
43	36
16	96
10	77
6	67
24	63
24	13
11	76
36	24
10	73
33	15
28	65
27	59
13	48
15	55
26	55
48	13
4	59
13	69
9	77
23	40
8	101
28	37
33	13
6	77
31	15
19	63
15	52
20	13
21	60
21	65
14	65
13	36
2	104
30	25
20	40
9	81
25	13
19	63
5	80
6	69
30	16
1	92
16	40
31	0
8	44
4	76
3	76
6	69
10	40
7	76
7	68
10	37
19	44
0	88
1	89
4	65
18	44
7	65
3	50
14	13
30	13
6	48
2	76
7	48
5	63
4	45
8	52
10	37
8	69
21	44
12	44
9	59
10	63
18	40
15	37
13	32
20	40
2	69
2	65
13	15
15	4
13	15
1	77
19	12
3	65
0	71
10	13
10	21
15	24
1	71
11	35
11	44
1	69
11	32
5	59
0	75
12	17
1	68
4	55
16	8
13	13
13	37
10	37
1	45
1	69
1	60
3	60
8	44
17	15
10	24
8	56
5	63
10	39
21	36
1	63
3	59
10	36
23	8
15	31
25	13
25	13
8	40
4	48
5	52
0	63
2	56
10	15
13	15
5	33
8	23
8	40
10	40
5	8
4	53
8	41
3	38
8	37
10	32
5	37
15	8
3	48
6	44
4	59
4	33
5	33
3	44
5	44
4	52
4	49
2	59
13	37
13	5
5	24
8	4
23	5
5	32
3	52
6	24
1	57
8	24
15	16
13	36
8	24
2	56
10	17
5	15
2	56
11	16
0	48
7	5
6	51
8	15
1	49
12	8
10	16
13	31
5	36
5	31
3	45
5	32
2	36
8	8
7	4
8	5
6	41
9	16
10	24
5	40
8	15

Margin (mm)	Years the old record stood
33	125
22	46
34	76
16	123
18	71
22	77
26	37
17	53
19	50
13	104
17	108
43	36
16	96
10	77
6	67
24	63
24	13
11	76
36	24
10	73
33	15
28	65
27	59
13	48
15	55
26	55
48	13
4	59
13	69
9	77
23	40
8	101
28	37
33	13
6	77
31	15
19	63
15	52
20	13
21	60
21	65
14	65
13	36
2	104
30	25
20	40
9	81
25	13
19	63
5	80
6	69
30	16
1	92
16	40
31	0
8	44
4	76
3	76
6	69
10	40
7	76
7	68
10	37
19	44
0	88
1	89
4	65
18	44
7	65
3	50
14	13
30	13
6	48
2	76
7	48
5	63
4	45
8	52
10	37
8	69
21	44
12	44
9	59
10	63
18	40
15	37
13	32
20	40
2	69
2	65
13	15
15	4
13	15
1	77
19	12
3	65
0	71
10	13
10	21
15	24
1	71
11	35
11	44
1	69
11	32
5	59
0	75
12	17
1	68
4	55
16	8
13	13
13	37
10	37
1	45
1	69
1	60
3	60
8	44
17	15
10	24
8	56
5	63
10	39
21	36
1	63
3	59
10	36
23	8
15	31
25	13
25	13
8	40
4	48
5	52
0	63
2	56
10	15
13	15
5	33
8	23
8	40
10	40
5	8
4	53
8	41
3	38
8	37
10	32
5	37
15	8
3	48
6	44
4	59
4	33
5	33
3	44
5	44
4	52
4	49
2	59
13	37
13	5
5	24
8	4
23	5
5	32
3	52
6	24
1	57
8	24
15	16
13	36
8	24
2	56
10	17
5	15
2	56
11	16
0	48
7	5
6	51
8	15
1	49
12	8
10	16
13	31
5	36
5	31
3	45
5	32
2	36
8	8
7	4
8	5
6	41
9	16
10	24
5	40
8	15