Extreme rain in United States, 28 September to 11 October 2022

Name: Extreme rain in United States, 28 September to 11 October 2022
Start: 2022-09-28
End: 2022-10-11
Location: United States

Extreme rain in United States, 28 September to 11 October 2022: 285 records at 250 stations, peak on 30 September 2022. Closed.

Data as of 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Key Facts

Extreme rain in United States, 28 September to 11 October 2022 set or tied 285 station records at 250 stations.
It ran from 28 September 2022 to 11 October 2022 (14 days) and its peak day was 30 September 2022.
Status: closed.
Holter Dam set a daily record precipitation of 31.8 mm (1.3 in) on 1 October 2022.
The busiest day was 30 September 2022 with 77 records.
The oldest broken record in the ranked list had stood for 105 years.

Footprint

28 September to 11 October 2022

The area covered by Extreme rain in United States, 28 September to 11 October 2022 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, 28 September to 11 October 2022: stations that set records in the event
Station	Type	Value	Date
Holter Dam	Record daily precipitation	31.8 mm (1.3 in)	2022-10-01
Ashurst Hayden Dam	Record daily precipitation	43.2 mm (1.7 in)	2022-10-09
Sun Rvr 4 S	Record daily precipitation	27.9 mm (1.1 in)	2022-10-01
Eagle Nest	Record daily precipitation	26.4 mm (1.0 in)	2022-10-05
Ft Stockton	Record daily precipitation	55.9 mm (2.2 in)	2022-10-10
El Morro Natl Mon	Record daily precipitation	35.3 mm (1.4 in)	2022-10-03
Barker Lakes	Record daily precipitation	55.9 mm (2.2 in)	2022-10-01
Hebgen Dam	Record daily precipitation	33.0 mm (1.3 in)	2022-10-01
Moscow U of I	Record daily precipitation	31.0 mm (1.2 in)	2022-09-29
Lewistown 11 SSE	Record daily precipitation	37.6 mm (1.5 in)	2022-10-01
Lookout Mountain	Record daily precipitation	30.5 mm (1.2 in)	2022-10-08
Porcupine	Record daily precipitation	27.9 mm (1.1 in)	2022-09-30
Adel	Record daily precipitation	25.9 mm (1.0 in)	2022-09-30
Del Norte 3ENE	Record daily precipitation	30.2 mm (1.2 in)	2022-10-03
Coeur D'Alene	Record daily precipitation	26.4 mm (1.0 in)	2022-09-30
Lewistown AP	Record daily precipitation	29.0 mm (1.1 in)	2022-09-30
Dubois	Record daily precipitation	21.1 mm (0.8 in)	2022-10-01
Helena AP ASOS	Record daily precipitation	17.0 mm (0.7 in)	2022-10-01
Paradise	Record daily precipitation	18.5 mm (0.7 in)	2022-10-07

Records per Day

Peak day 77

Records set or tied each day from 28 September 2022 to 11 October 2022. The most in one day was 77 on 30 September 2022.

Records per day during Extreme rain in United States, 28 September to 11 October 2022
Date	Records
2022-09-28	2
2022-09-29	16
2022-09-30	77
2022-10-01	58
2022-10-02	27
2022-10-03	25
2022-10-04	16
2022-10-05	8
2022-10-06	12
2022-10-07	6
2022-10-08	14
2022-10-09	6
2022-10-10	12
2022-10-11	6

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 28 September to 11 October 2022 ranked by margin
Ft Stockton, 10-10	44.5 mm (1.8 in)
Barker Lakes, 10-01	43.2 mm (1.7 in)
Ashurst Hayden Dam, 10-09	39.6 mm (1.6 in)
Lookout Mountain, 10-08	22.9 mm (0.9 in)
El Morro Natl Mon, 10-03	21.3 mm (0.8 in)
Lewistown 11 SSE, 10-01	21.3 mm (0.8 in)
Holter Dam, 10-01	20.9 mm (0.8 in)
Porcupine, 09-30	20.3 mm (0.8 in)
Sun Rvr 4 S, 10-01	18.2 mm (0.7 in)
Moscow U of I, 09-29	17.5 mm (0.7 in)
Paradise, 10-07	15.5 mm (0.6 in)
Adel, 09-30	14.2 mm (0.6 in)
Eagle Nest, 10-05	13.7 mm (0.5 in)
Helena AP ASOS, 10-01	8.6 mm (0.34 in)
Hebgen Dam, 10-01	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

285 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, 28 September to 11 October 2022
Margin (mm)	Years the old record stood
21	76
40	61
16	100
18	32
14	89
45	36
21	40
9	76
43	32
8	105
18	36
21	36
8	96
23	36
20	32
5	95
7	80
14	72
6	77
3	96
3	104
17	12
21	28
15	32
17	21
28	32
15	44
5	92
20	8
6	46
19	39
11	44
6	81
15	37
9	67
15	28
6	79
12	12
9	44
13	39
12	4
10	21
5	41
6	52
2	73
15	21
5	60
20	20
13	16
8	37
1	72
18	7
5	63
13	64
12	16
7	51
0	83
5	68
15	28
2	63
6	48
15	7
13	8
5	52
7	56
12	48
17	32
19	48
5	51
3	63
12	49
4	44
8	17
15	25
23	16
8	51
6	51
12	19
13	36
6	51
8	17
15	25
5	23
2	67
5	49
21	8
4	36
10	4
10	32
10	39
7	31
2	56
6	28
2	56
0	64
3	53
3	51
7	23
13	37
13	8
6	37
11	17
4	36
4	40
10	24
8	20
13	32
15	37
8	32
2	51
1	63
8	39
1	52
3	40
8	32
8	32
13	4
15	4
13	28
8	28
15	4
1	44
2	36
5	12
1	51
12	11
1	40
8	32
5	32
8	24
15	16
0	55
2	21
12	11
6	36
8	24
4	27
8	40
5	35
8	28
10	32
3	48
4	32
6	24
5	4
9	19
1	36
10	0
1	37
13	4
13	11
1	40
7	21
3	36
8	5
2	37
1	32
1	44
1	48
1	39
3	40
3	40
5	28
10	8
7	16
1	37
5	4
1	44
6	16
7	21
1	44
2	37
3	40
5	19
3	40
8	28
8	20
5	28
13	8
8	4
3	19
4	20
5	4
3	32
3	32
13	0
5	27
3	41
4	4
3	32
2	32
5	25
5	20
1	39
8	8
3	37
7	23
3	32
8	8
5	20

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 28 September to 11 October 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, 28 September to 11 October 2022 (this event)	285 records

Every Record Set

20 of 285

Every record set or tied during Extreme rain in United States, 28 September to 11 October 2022, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2022-09-29	Moscow U of I	Record daily precipitation	31.0 mm (1.2 in)	17.5 mm (0.7 in)	36	50 of 100 (Notable)
2022-09-30	Porcupine	Record daily precipitation	27.9 mm (1.1 in)	20.3 mm (0.8 in)	32	48 of 100 (Notable)
2022-09-30	Adel	Record daily precipitation	25.9 mm (1.0 in)	14.2 mm (0.6 in)	72	46 of 100 (Notable)
2022-09-30	Coeur D'Alene	Record daily precipitation	26.4 mm (1.0 in)	6.1 mm (0.24 in)	77	43 of 100 (Notable)
2022-09-30	Lewistown AP	Record daily precipitation	29.0 mm (1.1 in)	3.1 mm (0.12 in)	96	43 of 100 (Notable)
2022-10-01	Holter Dam	Record daily precipitation	31.8 mm (1.3 in)	20.9 mm (0.8 in)	76	72 of 100 (Major)
2022-10-01	Sun Rvr 4 S	Record daily precipitation	27.9 mm (1.1 in)	18.2 mm (0.7 in)	32	59 of 100 (Notable)
2022-10-01	Barker Lakes	Record daily precipitation	55.9 mm (2.2 in)	43.2 mm (1.7 in)	32	53 of 100 (Notable)
2022-10-01	Hebgen Dam	Record daily precipitation	33.0 mm (1.3 in)	8.1 mm (0.32 in)	105	52 of 100 (Notable)
2022-10-01	Lewistown 11 SSE	Record daily precipitation	37.6 mm (1.5 in)	21.3 mm (0.8 in)	36	50 of 100 (Notable)
2022-10-01	Dubois	Record daily precipitation	21.1 mm (0.8 in)	4.6 mm (0.18 in)	95	20 of 100 (Routine)
2022-10-01	Helena AP ASOS	Record daily precipitation	17.0 mm (0.7 in)	8.6 mm (0.34 in)	76	20 of 100 (Routine)
2022-10-03	El Morro Natl Mon	Record daily precipitation	35.3 mm (1.4 in)	21.3 mm (0.8 in)	40	55 of 100 (Notable)
2022-10-03	Del Norte 3ENE	Record daily precipitation	30.2 mm (1.2 in)	7.1 mm (0.28 in)	80	46 of 100 (Notable)
2022-10-05	Eagle Nest	Record daily precipitation	26.4 mm (1.0 in)	13.7 mm (0.5 in)	89	59 of 100 (Notable)
2022-10-07	Paradise	Record daily precipitation	18.5 mm (0.7 in)	15.5 mm (0.6 in)	100	20 of 100 (Routine)
2022-10-08	Lookout Mountain	Record daily precipitation	30.5 mm (1.2 in)	22.9 mm (0.9 in)	36	49 of 100 (Notable)
2022-10-09	Ashurst Hayden Dam	Record daily precipitation	43.2 mm (1.7 in)	39.6 mm (1.6 in)	61	64 of 100 (Major)
2022-10-10	Ft Stockton	Record daily precipitation	55.9 mm (2.2 in)	44.5 mm (1.8 in)	36	57 of 100 (Notable)
2022-10-10	Paradise	Record daily precipitation	18.5 mm (0.7 in)	8.1 mm (0.32 in)	96	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 285 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 2026-10-18. 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
21	76
40	61
16	100
18	32
14	89
45	36
21	40
9	76
43	32
8	105
18	36
21	36
8	96
23	36
20	32
5	95
7	80
14	72
6	77
3	96
3	104
17	12
21	28
15	32
17	21
28	32
15	44
5	92
20	8
6	46
19	39
11	44
6	81
15	37
9	67
15	28
6	79
12	12
9	44
13	39
12	4
10	21
5	41
6	52
2	73
15	21
5	60
20	20
13	16
8	37
1	72
18	7
5	63
13	64
12	16
7	51
0	83
5	68
15	28
2	63
6	48
15	7
13	8
5	52
7	56
12	48
17	32
19	48
5	51
3	63
12	49
4	44
8	17
15	25
23	16
8	51
6	51
12	19
13	36
6	51
8	17
15	25
5	23
2	67
5	49
21	8
4	36
10	4
10	32
10	39
7	31
2	56
6	28
2	56
0	64
3	53
3	51
7	23
13	37
13	8
6	37
11	17
4	36
4	40
10	24
8	20
13	32
15	37
8	32
2	51
1	63
8	39
1	52
3	40
8	32
8	32
13	4
15	4
13	28
8	28
15	4
1	44
2	36
5	12
1	51
12	11
1	40
8	32
5	32
8	24
15	16
0	55
2	21
12	11
6	36
8	24
4	27
8	40
5	35
8	28
10	32
3	48
4	32
6	24
5	4
9	19
1	36
10	0
1	37
13	4
13	11
1	40
7	21
3	36
8	5
2	37
1	32
1	44
1	48
1	39
3	40
3	40
5	28
10	8
7	16
1	37
5	4
1	44
6	16
7	21
1	44
2	37
3	40
5	19
3	40
8	28
8	20
5	28
13	8
8	4
3	19
4	20
5	4
3	32
3	32
13	0
5	27
3	41
4	4
3	32
2	32
5	25
5	20
1	39
8	8
3	37
7	23
3	32
8	8
5	20

Margin (mm)	Years the old record stood
21	76
40	61
16	100
18	32
14	89
45	36
21	40
9	76
43	32
8	105
18	36
21	36
8	96
23	36
20	32
5	95
7	80
14	72
6	77
3	96
3	104
17	12
21	28
15	32
17	21
28	32
15	44
5	92
20	8
6	46
19	39
11	44
6	81
15	37
9	67
15	28
6	79
12	12
9	44
13	39
12	4
10	21
5	41
6	52
2	73
15	21
5	60
20	20
13	16
8	37
1	72
18	7
5	63
13	64
12	16
7	51
0	83
5	68
15	28
2	63
6	48
15	7
13	8
5	52
7	56
12	48
17	32
19	48
5	51
3	63
12	49
4	44
8	17
15	25
23	16
8	51
6	51
12	19
13	36
6	51
8	17
15	25
5	23
2	67
5	49
21	8
4	36
10	4
10	32
10	39
7	31
2	56
6	28
2	56
0	64
3	53
3	51
7	23
13	37
13	8
6	37
11	17
4	36
4	40
10	24
8	20
13	32
15	37
8	32
2	51
1	63
8	39
1	52
3	40
8	32
8	32
13	4
15	4
13	28
8	28
15	4
1	44
2	36
5	12
1	51
12	11
1	40
8	32
5	32
8	24
15	16
0	55
2	21
12	11
6	36
8	24
4	27
8	40
5	35
8	28
10	32
3	48
4	32
6	24
5	4
9	19
1	36
10	0
1	37
13	4
13	11
1	40
7	21
3	36
8	5
2	37
1	32
1	44
1	48
1	39
3	40
3	40
5	28
10	8
7	16
1	37
5	4
1	44
6	16
7	21
1	44
2	37
3	40
5	19
3	40
8	28
8	20
5	28
13	8
8	4
3	19
4	20
5	4
3	32
3	32
13	0
5	27
3	41
4	4
3	32
2	32
5	25
5	20
1	39
8	8
3	37
7	23
3	32
8	8
5	20

Margin (mm)	Years the old record stood
21	76
40	61
16	100
18	32
14	89
45	36
21	40
9	76
43	32
8	105
18	36
21	36
8	96
23	36
20	32
5	95
7	80
14	72
6	77
3	96
3	104
17	12
21	28
15	32
17	21
28	32
15	44
5	92
20	8
6	46
19	39
11	44
6	81
15	37
9	67
15	28
6	79
12	12
9	44
13	39
12	4
10	21
5	41
6	52
2	73
15	21
5	60
20	20
13	16
8	37
1	72
18	7
5	63
13	64
12	16
7	51
0	83
5	68
15	28
2	63
6	48
15	7
13	8
5	52
7	56
12	48
17	32
19	48
5	51
3	63
12	49
4	44
8	17
15	25
23	16
8	51
6	51
12	19
13	36
6	51
8	17
15	25
5	23
2	67
5	49
21	8
4	36
10	4
10	32
10	39
7	31
2	56
6	28
2	56
0	64
3	53
3	51
7	23
13	37
13	8
6	37
11	17
4	36
4	40
10	24
8	20
13	32
15	37
8	32
2	51
1	63
8	39
1	52
3	40
8	32
8	32
13	4
15	4
13	28
8	28
15	4
1	44
2	36
5	12
1	51
12	11
1	40
8	32
5	32
8	24
15	16
0	55
2	21
12	11
6	36
8	24
4	27
8	40
5	35
8	28
10	32
3	48
4	32
6	24
5	4
9	19
1	36
10	0
1	37
13	4
13	11
1	40
7	21
3	36
8	5
2	37
1	32
1	44
1	48
1	39
3	40
3	40
5	28
10	8
7	16
1	37
5	4
1	44
6	16
7	21
1	44
2	37
3	40
5	19
3	40
8	28
8	20
5	28
13	8
8	4
3	19
4	20
5	4
3	32
3	32
13	0
5	27
3	41
4	4
3	32
2	32
5	25
5	20
1	39
8	8
3	37
7	23
3	32
8	8
5	20