Extreme rain in Australia, 13 to 24 September 2020

Name: Extreme rain in Australia, 13 to 24 September 2020
Start: 2020-09-13
End: 2020-09-24
Location: Australia

Extreme rain in Australia, 13 to 24 September 2020: 358 records at 303 stations, peak on 20 September 2020. Closed.

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

Key Facts

Extreme rain in Australia, 13 to 24 September 2020 set or tied 358 station records at 303 stations.
It ran from 13 September 2020 to 24 September 2020 (12 days) and its peak day was 20 September 2020.
Status: closed.
Brighton Downs set a monthly record daily precipitation of 57.4 mm (2.3 in) on 19 September 2020.
The busiest day was 20 September 2020 with 104 records.
The oldest broken record in the ranked list had stood for 134 years.

Footprint

13 to 24 September 2020

The area covered by Extreme rain in Australia, 13 to 24 September 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 Australia, 13 to 24 September 2020: stations that set records in the event
Station	Type	Value	Date
Brighton Downs	Record daily precipitation	57.4 mm (2.3 in)	2020-09-19
Mount Eba	Record daily precipitation	98.5 mm (3.9 in)	2020-09-19
Hawker (Holowilena)	Record daily precipitation	49.2 mm (1.9 in)	2020-09-19
Glendambo (Millers Creek)	Record daily precipitation	25.0 mm (1.0 in)	2020-09-19
Wilcannia (Mount Murchison)	Record daily precipitation	39.4 mm (1.6 in)	2020-09-20
Ivanhoe (Baden Park)	Record daily precipitation	42.0 mm (1.7 in)	2020-09-20
Marion Downs	Record daily precipitation	25.0 mm (1.0 in)	2020-09-19
Broken Hill (Langawirra)	Record daily precipitation	43.4 mm (1.7 in)	2020-09-20
Sunnyside	Record daily precipitation	39.0 mm (1.5 in)	2020-09-20
Edeowie	Record daily precipitation	40.6 mm (1.6 in)	2020-09-19
Westerton	Record daily precipitation	110.0 mm (4.3 in)	2020-09-19
Woomera Aerodrome	Record daily precipitation	41.0 mm (1.6 in)	2020-09-19
Euston (Sunnyside)	Record daily precipitation	30.0 mm (1.2 in)	2020-09-20
Marree (Farina)	Record daily precipitation	55.0 mm (2.2 in)	2020-09-19
Boolcoomatta	Record daily precipitation	51.4 mm (2.0 in)	2020-09-20
Tarcoola (Mulgathing)	Record daily precipitation	32.0 mm (1.3 in)	2020-09-19
Mundurin Station	Record daily precipitation	21.0 mm (0.8 in)	2020-09-18
Tarcoola (Commonwealth Hill)	Record daily precipitation	20.4 mm (0.8 in)	2020-09-19
Crowfels Station	Record daily precipitation	20.6 mm (0.8 in)	2020-09-22

Records per Day

Peak day 104

Records set or tied each day from 13 September 2020 to 24 September 2020. The most in one day was 104 on 20 September 2020.

Records per day during Extreme rain in Australia, 13 to 24 September 2020
Date	Records
2020-09-13	2
2020-09-14	4
2020-09-15	1
2020-09-16	6
2020-09-17	10
2020-09-18	25
2020-09-19	98
2020-09-20	104
2020-09-21	28
2020-09-22	64
2020-09-23	14
2020-09-24	2

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in Australia, 13 to 24 September 2020 ranked by margin
Westerton, 09-19	78.0 mm (3.1 in)
Sunnyside, 09-20	39.0 mm (1.5 in)
Ivanhoe (Baden Park), 09-20	37.4 mm (1.5 in)
Broken Hill (Langawirra), 09-20	36.5 mm (1.4 in)
Mount Eba, 09-19	34.7 mm (1.4 in)
Brighton Downs, 09-19	29.5 mm (1.2 in)
Hawker (Holowilena), 09-19	29.4 mm (1.2 in)
Edeowie, 09-19	27.4 mm (1.1 in)
Wilcannia (Mount Murchison), 09-20	25.4 mm (1.0 in)
Glendambo (Millers Creek), 09-19	25.0 mm (1.0 in)
Marion Downs, 09-19	25.0 mm (1.0 in)
Euston (Sunnyside), 09-20	24.9 mm (1.0 in)
Mundurin Station, 09-18	21.0 mm (0.8 in)
Crowfels Station, 09-22	20.6 mm (0.8 in)
Tarcoola (Mulgathing), 09-19	20.5 mm (0.8 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

358 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 Australia, 13 to 24 September 2020
Margin (mm)	Years the old record stood
30	93
35	71
29	105
25	91
25	133
37	124
25	107
37	74
39	90
21	104
20	126
18	79
21	75
27	74
78	40
13	71
25	61
13	74
10	105
21	46
14	105
29	46
16	47
19	67
14	131
21	40
38	46
36	23
16	116
16	107
33	23
10	105
10	105
13	111
37	24
38	46
14	61
23	10
25	27
20	74
10	105
12	100
23	64
57	23
17	23
10	132
9	122
7	105
10	134
9	111
11	101
10	105
59	23
7	105
21	27
8	134
9	110
6	102
15	82
36	49
22	23
14	67
6	105
6	120
7	105
8	105
13	76
28	46
8	99
17	51
14	4
4	105
9	125
8	74
7	79
4	105
19	46
4	123
3	119
25	4
24	23
7	80
8	74
3	105
6	96
9	27
2	114
23	23
4	109
5	103
2	107
3	127
8	81
3	127
2	127
2	127
32	25
3	122
10	85
2	120
20	24
2	105
2	96
12	46
2	100
5	94
1	105
2	133
8	67
14	46
0	105
0	122
0	105
13	27
1	105
1	103
15	23
4	85
16	4
18	24
17	10
20	24
16	23
15	23
14	11
8	14
6	67
10	76
7	70
19	23
16	44
5	79
15	23
5	82
6	70
75	30
12	52
7	67
3	86
7	76
7	76
14	45
3	86
2	87
9	52
0	90
11	45
14	44
12	22
21	23
16	4
5	73
5	70
0	85
9	50
17	55
3	79
12	50
2	40
13	55
5	79
2	75
8	46
8	46
15	50
13	46
20	46
12	46
12	53
20	32
3	70
2	70
10	46
8	42
11	3
9	48
10	50
1	75
7	45
12	22
3	69
10	23
5	38
20	32
4	50
14	28
9	19
14	24
6	46
5	46
7	27
1	37
7	32
22	4
6	50
11	30
0	61
11	22
3	50
4	47

Compared With Other Events

Station records per event

Station records in Extreme rain in Australia, 13 to 24 September 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 Australia, 13 to 24 September 2020 (this event)	358 records

Every Record Set

20 of 358

Every record set or tied during Extreme rain in Australia, 13 to 24 September 2020, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2020-09-18	Mundurin Station	Record daily precipitation	21.0 mm (0.8 in)	21.0 mm (0.8 in)	75	20 of 100 (Routine)
2020-09-19	Brighton Downs	Record daily precipitation	57.4 mm (2.3 in)	29.5 mm (1.2 in)	93	88 of 100 (Exceptional)
2020-09-19	Mount Eba	Record daily precipitation	98.5 mm (3.9 in)	34.7 mm (1.4 in)	71	81 of 100 (Exceptional)
2020-09-19	Hawker (Holowilena)	Record daily precipitation	49.2 mm (1.9 in)	29.4 mm (1.2 in)	105	80 of 100 (Exceptional)
2020-09-19	Glendambo (Millers Creek)	Record daily precipitation	25.0 mm (1.0 in)	25.0 mm (1.0 in)	91	76 of 100 (Major)
2020-09-19	Marion Downs	Record daily precipitation	25.0 mm (1.0 in)	25.0 mm (1.0 in)	107	74 of 100 (Major)
2020-09-19	Edeowie	Record daily precipitation	40.6 mm (1.6 in)	27.4 mm (1.1 in)	74	68 of 100 (Major)
2020-09-19	Westerton	Record daily precipitation	110.0 mm (4.3 in)	78.0 mm (3.1 in)	40	67 of 100 (Major)
2020-09-19	Woomera Aerodrome	Record daily precipitation	41.0 mm (1.6 in)	13.1 mm (0.5 in)	71	66 of 100 (Major)
2020-09-19	Marree (Farina)	Record daily precipitation	55.0 mm (2.2 in)	13.3 mm (0.5 in)	74	62 of 100 (Major)
2020-09-19	Tarcoola (Mulgathing)	Record daily precipitation	32.0 mm (1.3 in)	20.5 mm (0.8 in)	46	59 of 100 (Notable)
2020-09-19	Tarcoola (Commonwealth Hill)	Record daily precipitation	20.4 mm (0.8 in)	17.9 mm (0.7 in)	79	20 of 100 (Routine)
2020-09-20	Wilcannia (Mount Murchison)	Record daily precipitation	39.4 mm (1.6 in)	25.4 mm (1.0 in)	133	76 of 100 (Major)
2020-09-20	Ivanhoe (Baden Park)	Record daily precipitation	42.0 mm (1.7 in)	37.4 mm (1.5 in)	124	75 of 100 (Major)
2020-09-20	Broken Hill (Langawirra)	Record daily precipitation	43.4 mm (1.7 in)	36.5 mm (1.4 in)	74	72 of 100 (Major)
2020-09-20	Sunnyside	Record daily precipitation	39.0 mm (1.5 in)	39.0 mm (1.5 in)	90	71 of 100 (Major)
2020-09-20	Euston (Sunnyside)	Record daily precipitation	30.0 mm (1.2 in)	24.9 mm (1.0 in)	61	64 of 100 (Major)
2020-09-20	Boolcoomatta	Record daily precipitation	51.4 mm (2.0 in)	9.5 mm (0.37 in)	105	62 of 100 (Major)
2020-09-21	Brighton Downs	Record daily precipitation	19.8 mm (0.8 in)	19.8 mm (0.8 in)	126	20 of 100 (Routine)
2020-09-22	Crowfels Station	Record daily precipitation	20.6 mm (0.8 in)	20.6 mm (0.8 in)	104	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 358 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
30	93
35	71
29	105
25	91
25	133
37	124
25	107
37	74
39	90
21	104
20	126
18	79
21	75
27	74
78	40
13	71
25	61
13	74
10	105
21	46
14	105
29	46
16	47
19	67
14	131
21	40
38	46
36	23
16	116
16	107
33	23
10	105
10	105
13	111
37	24
38	46
14	61
23	10
25	27
20	74
10	105
12	100
23	64
57	23
17	23
10	132
9	122
7	105
10	134
9	111
11	101
10	105
59	23
7	105
21	27
8	134
9	110
6	102
15	82
36	49
22	23
14	67
6	105
6	120
7	105
8	105
13	76
28	46
8	99
17	51
14	4
4	105
9	125
8	74
7	79
4	105
19	46
4	123
3	119
25	4
24	23
7	80
8	74
3	105
6	96
9	27
2	114
23	23
4	109
5	103
2	107
3	127
8	81
3	127
2	127
2	127
32	25
3	122
10	85
2	120
20	24
2	105
2	96
12	46
2	100
5	94
1	105
2	133
8	67
14	46
0	105
0	122
0	105
13	27
1	105
1	103
15	23
4	85
16	4
18	24
17	10
20	24
16	23
15	23
14	11
8	14
6	67
10	76
7	70
19	23
16	44
5	79
15	23
5	82
6	70
75	30
12	52
7	67
3	86
7	76
7	76
14	45
3	86
2	87
9	52
0	90
11	45
14	44
12	22
21	23
16	4
5	73
5	70
0	85
9	50
17	55
3	79
12	50
2	40
13	55
5	79
2	75
8	46
8	46
15	50
13	46
20	46
12	46
12	53
20	32
3	70
2	70
10	46
8	42
11	3
9	48
10	50
1	75
7	45
12	22
3	69
10	23
5	38
20	32
4	50
14	28
9	19
14	24
6	46
5	46
7	27
1	37
7	32
22	4
6	50
11	30
0	61
11	22
3	50
4	47

Margin (mm)	Years the old record stood
30	93
35	71
29	105
25	91
25	133
37	124
25	107
37	74
39	90
21	104
20	126
18	79
21	75
27	74
78	40
13	71
25	61
13	74
10	105
21	46
14	105
29	46
16	47
19	67
14	131
21	40
38	46
36	23
16	116
16	107
33	23
10	105
10	105
13	111
37	24
38	46
14	61
23	10
25	27
20	74
10	105
12	100
23	64
57	23
17	23
10	132
9	122
7	105
10	134
9	111
11	101
10	105
59	23
7	105
21	27
8	134
9	110
6	102
15	82
36	49
22	23
14	67
6	105
6	120
7	105
8	105
13	76
28	46
8	99
17	51
14	4
4	105
9	125
8	74
7	79
4	105
19	46
4	123
3	119
25	4
24	23
7	80
8	74
3	105
6	96
9	27
2	114
23	23
4	109
5	103
2	107
3	127
8	81
3	127
2	127
2	127
32	25
3	122
10	85
2	120
20	24
2	105
2	96
12	46
2	100
5	94
1	105
2	133
8	67
14	46
0	105
0	122
0	105
13	27
1	105
1	103
15	23
4	85
16	4
18	24
17	10
20	24
16	23
15	23
14	11
8	14
6	67
10	76
7	70
19	23
16	44
5	79
15	23
5	82
6	70
75	30
12	52
7	67
3	86
7	76
7	76
14	45
3	86
2	87
9	52
0	90
11	45
14	44
12	22
21	23
16	4
5	73
5	70
0	85
9	50
17	55
3	79
12	50
2	40
13	55
5	79
2	75
8	46
8	46
15	50
13	46
20	46
12	46
12	53
20	32
3	70
2	70
10	46
8	42
11	3
9	48
10	50
1	75
7	45
12	22
3	69
10	23
5	38
20	32
4	50
14	28
9	19
14	24
6	46
5	46
7	27
1	37
7	32
22	4
6	50
11	30
0	61
11	22
3	50
4	47

Margin (mm)	Years the old record stood
30	93
35	71
29	105
25	91
25	133
37	124
25	107
37	74
39	90
21	104
20	126
18	79
21	75
27	74
78	40
13	71
25	61
13	74
10	105
21	46
14	105
29	46
16	47
19	67
14	131
21	40
38	46
36	23
16	116
16	107
33	23
10	105
10	105
13	111
37	24
38	46
14	61
23	10
25	27
20	74
10	105
12	100
23	64
57	23
17	23
10	132
9	122
7	105
10	134
9	111
11	101
10	105
59	23
7	105
21	27
8	134
9	110
6	102
15	82
36	49
22	23
14	67
6	105
6	120
7	105
8	105
13	76
28	46
8	99
17	51
14	4
4	105
9	125
8	74
7	79
4	105
19	46
4	123
3	119
25	4
24	23
7	80
8	74
3	105
6	96
9	27
2	114
23	23
4	109
5	103
2	107
3	127
8	81
3	127
2	127
2	127
32	25
3	122
10	85
2	120
20	24
2	105
2	96
12	46
2	100
5	94
1	105
2	133
8	67
14	46
0	105
0	122
0	105
13	27
1	105
1	103
15	23
4	85
16	4
18	24
17	10
20	24
16	23
15	23
14	11
8	14
6	67
10	76
7	70
19	23
16	44
5	79
15	23
5	82
6	70
75	30
12	52
7	67
3	86
7	76
7	76
14	45
3	86
2	87
9	52
0	90
11	45
14	44
12	22
21	23
16	4
5	73
5	70
0	85
9	50
17	55
3	79
12	50
2	40
13	55
5	79
2	75
8	46
8	46
15	50
13	46
20	46
12	46
12	53
20	32
3	70
2	70
10	46
8	42
11	3
9	48
10	50
1	75
7	45
12	22
3	69
10	23
5	38
20	32
4	50
14	28
9	19
14	24
6	46
5	46
7	27
1	37
7	32
22	4
6	50
11	30
0	61
11	22
3	50
4	47