Extreme rain in Australia, 25 to 29 October 2021

Name: Extreme rain in Australia, 25 to 29 October 2021
Start: 2021-10-25
End: 2021-10-29
Location: Australia

Extreme rain in Australia, 25 to 29 October 2021: 124 records at 117 stations, peak on 27 October 2021. Closed.

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

Key Facts

Extreme rain in Australia, 25 to 29 October 2021 set or tied 124 station records at 117 stations.
It ran from 25 October 2021 to 29 October 2021 (5 days) and its peak day was 27 October 2021.
Status: closed.
Jandakot Aero set a daily record precipitation of 37.2 mm (1.5 in) on 27 October 2021.
The busiest day was 27 October 2021 with 74 records.
The oldest broken record in the ranked list had stood for 111 years.

Footprint

25 to 29 October 2021

The area covered by Extreme rain in Australia, 25 to 29 October 2021 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Extreme rain in Australia, 25 to 29 October 2021: stations that set records in the event
Station	Type	Value	Date
Jandakot Aero	Record daily precipitation	37.2 mm (1.5 in)	2021-10-27
Wooroloo	Record daily precipitation	27.6 mm (1.1 in)	2021-10-27
Pearce Raaf	Record daily precipitation	32.4 mm (1.3 in)	2021-10-27
Maida Vale	Record daily precipitation	28.6 mm (1.1 in)	2021-10-27
Forrestdale	Record daily precipitation	35.6 mm (1.4 in)	2021-10-27
Tardie Station	Record daily precipitation	1.5 mm (0.06 in)	2021-10-26
Coorow	Record daily precipitation	7.5 mm (0.30 in)	2021-10-26
Green Grove	Record daily precipitation	22.4 mm (0.9 in)	2021-10-26
Denmark	Record daily precipitation	10.6 mm (0.4 in)	2021-10-26
Hopetoun	Record daily precipitation	14.8 mm (0.6 in)	2021-10-26
Yongarloo	Record daily precipitation	8.5 mm (0.33 in)	2021-10-27
Chelsea	Record daily precipitation	16.6 mm (0.7 in)	2021-10-27
Lake Nammen	Record daily precipitation	18.6 mm (0.7 in)	2021-10-27
Bannister	Record daily precipitation	24.4 mm (1.0 in)	2021-10-27
Boddington Shire	Record daily precipitation	23.0 mm (0.9 in)	2021-10-27
Marradong	Record daily precipitation	22.0 mm (0.9 in)	2021-10-27
Burracoppin	Record daily precipitation	14.0 mm (0.6 in)	2021-10-27
Codg Codgen	Record daily precipitation	15.0 mm (0.6 in)	2021-10-27
Muresk Agric.College	Record daily precipitation	15.2 mm (0.6 in)	2021-10-27
Myrup	Record daily precipitation	14.0 mm (0.6 in)	2021-10-29

Records per Day

Peak day 74

Records set or tied each day from 25 October 2021 to 29 October 2021. The most in one day was 74 on 27 October 2021.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in Australia, 25 to 29 October 2021 ranked by margin
Jandakot Aero, 10-27	26.3 mm (1.0 in)
Forrestdale, 10-27	23.2 mm (0.9 in)
Maida Vale, 10-27	22.0 mm (0.9 in)
Pearce Raaf, 10-27	19.0 mm (0.7 in)
Lake Nammen, 10-27	15.4 mm (0.6 in)
Green Grove, 10-26	12.0 mm (0.5 in)
Bannister, 10-27	11.7 mm (0.5 in)
Wooroloo, 10-27	9.8 mm (0.39 in)
Muresk Agric.College, 10-27	9.1 mm (0.36 in)
Boddington Shire, 10-27	9.0 mm (0.35 in)
Marradong, 10-27	6.8 mm (0.27 in)
Yongarloo, 10-27	6.2 mm (0.24 in)
Chelsea, 10-27	5.9 mm (0.23 in)
Myrup, 10-29	4.3 mm (0.17 in)
Coorow, 10-26	4.2 mm (0.17 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

124 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, 25 to 29 October 2021
Margin (mm)	Years the old record stood
12	66
26	48
12	68
10	86
19	18
7	86
4	103
6	79
9	68
22	18
2	111
2	111
4	82
2	96
9	64
23	14
15	46
0	108
1	96
6	66
12	12
14	18
15	14
10	44
4	82
11	46
1	83
3	74
4	66
13	18
1	82
1	74
23	14
0	82
0	86
0	82
1	82
0	79
4	62
3	66
2	66
0	79
1	76
9	44
3	66
1	74
1	66
16	6
6	50
5	44
2	62
1	62
0	68
7	44
8	38
21	14
3	44
6	44
5	50
8	14
6	40
5	36
3	40
4	40
1	62
8	18
10	14
8	12
9	14
5	28
10	14
1	40
8	14
10	14
2	38
3	28
2	44
0	38
6	18
2	40
0	50
4	12
5	10
2	40
2	40
4	14
10	10
1	44
3	14
3	11
1	40
3	12
2	18
1	40
3	10
0	44
2	15
0	40
3	18
3	18
3	18
1	12
3	4
2	10
2	28
2	12
0	12
5	12
2	10
0	12
3	10
0	16
2	10
4	16
2	18
1	12
3	10
1	18
1	10
0	10
1	10
2	12
2	16
1	16

Compared With Other Events

Station records per event

Station records in Extreme rain in Australia, 25 to 29 October 2021 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, 25 to 29 October 2021 (this event)	124 records

Every Record Set

20 of 124

Every record set or tied during Extreme rain in Australia, 25 to 29 October 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-10-26	Tardie Station	Record daily precipitation	1.5 mm (0.06 in)	1.5 mm (0.06 in)	111	20 of 100 (Routine)
2021-10-26	Coorow	Record daily precipitation	7.5 mm (0.30 in)	4.2 mm (0.17 in)	82	20 of 100 (Routine)
2021-10-26	Green Grove	Record daily precipitation	22.4 mm (0.9 in)	12.0 mm (0.5 in)	66	20 of 100 (Routine)
2021-10-26	Denmark	Record daily precipitation	10.6 mm (0.4 in)	2.2 mm (0.09 in)	96	20 of 100 (Routine)
2021-10-26	Hopetoun	Record daily precipitation	14.8 mm (0.6 in)	0.1 mm (0.00 in)	108	20 of 100 (Routine)
2021-10-27	Jandakot Aero	Record daily precipitation	37.2 mm (1.5 in)	26.3 mm (1.0 in)	48	53 of 100 (Notable)
2021-10-27	Wooroloo	Record daily precipitation	27.6 mm (1.1 in)	9.8 mm (0.39 in)	86	49 of 100 (Notable)
2021-10-27	Pearce Raaf	Record daily precipitation	32.4 mm (1.3 in)	19.0 mm (0.7 in)	18	48 of 100 (Notable)
2021-10-27	Maida Vale	Record daily precipitation	28.6 mm (1.1 in)	22.0 mm (0.9 in)	18	43 of 100 (Notable)
2021-10-27	Forrestdale	Record daily precipitation	35.6 mm (1.4 in)	23.2 mm (0.9 in)	14	41 of 100 (Notable)
2021-10-27	Yongarloo	Record daily precipitation	8.5 mm (0.33 in)	6.2 mm (0.24 in)	66	20 of 100 (Routine)
2021-10-27	Chelsea	Record daily precipitation	16.6 mm (0.7 in)	5.9 mm (0.23 in)	79	20 of 100 (Routine)
2021-10-27	Lake Nammen	Record daily precipitation	18.6 mm (0.7 in)	15.4 mm (0.6 in)	46	20 of 100 (Routine)
2021-10-27	Bannister	Record daily precipitation	24.4 mm (1.0 in)	11.7 mm (0.5 in)	68	20 of 100 (Routine)
2021-10-27	Boddington Shire	Record daily precipitation	23.0 mm (0.9 in)	9.0 mm (0.35 in)	68	20 of 100 (Routine)
2021-10-27	Marradong	Record daily precipitation	22.0 mm (0.9 in)	6.8 mm (0.27 in)	86	20 of 100 (Routine)
2021-10-27	Burracoppin	Record daily precipitation	14.0 mm (0.6 in)	0.5 mm (0.02 in)	96	20 of 100 (Routine)
2021-10-27	Codg Codgen	Record daily precipitation	15.0 mm (0.6 in)	1.8 mm (0.07 in)	111	20 of 100 (Routine)
2021-10-27	Muresk Agric.College	Record daily precipitation	15.2 mm (0.6 in)	9.1 mm (0.36 in)	64	20 of 100 (Routine)
2021-10-29	Myrup	Record daily precipitation	14.0 mm (0.6 in)	4.3 mm (0.17 in)	103	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 124 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
12	66
26	48
12	68
10	86
19	18
7	86
4	103
6	79
9	68
22	18
2	111
2	111
4	82
2	96
9	64
23	14
15	46
0	108
1	96
6	66
12	12
14	18
15	14
10	44
4	82
11	46
1	83
3	74
4	66
13	18
1	82
1	74
23	14
0	82
0	86
0	82
1	82
0	79
4	62
3	66
2	66
0	79
1	76
9	44
3	66
1	74
1	66
16	6
6	50
5	44
2	62
1	62
0	68
7	44
8	38
21	14
3	44
6	44
5	50
8	14
6	40
5	36
3	40
4	40
1	62
8	18
10	14
8	12
9	14
5	28
10	14
1	40
8	14
10	14
2	38
3	28
2	44
0	38
6	18
2	40
0	50
4	12
5	10
2	40
2	40
4	14
10	10
1	44
3	14
3	11
1	40
3	12
2	18
1	40
3	10
0	44
2	15
0	40
3	18
3	18
3	18
1	12
3	4
2	10
2	28
2	12
0	12
5	12
2	10
0	12
3	10
0	16
2	10
4	16
2	18
1	12
3	10
1	18
1	10
0	10
1	10
2	12
2	16
1	16

Margin (mm)	Years the old record stood
12	66
26	48
12	68
10	86
19	18
7	86
4	103
6	79
9	68
22	18
2	111
2	111
4	82
2	96
9	64
23	14
15	46
0	108
1	96
6	66
12	12
14	18
15	14
10	44
4	82
11	46
1	83
3	74
4	66
13	18
1	82
1	74
23	14
0	82
0	86
0	82
1	82
0	79
4	62
3	66
2	66
0	79
1	76
9	44
3	66
1	74
1	66
16	6
6	50
5	44
2	62
1	62
0	68
7	44
8	38
21	14
3	44
6	44
5	50
8	14
6	40
5	36
3	40
4	40
1	62
8	18
10	14
8	12
9	14
5	28
10	14
1	40
8	14
10	14
2	38
3	28
2	44
0	38
6	18
2	40
0	50
4	12
5	10
2	40
2	40
4	14
10	10
1	44
3	14
3	11
1	40
3	12
2	18
1	40
3	10
0	44
2	15
0	40
3	18
3	18
3	18
1	12
3	4
2	10
2	28
2	12
0	12
5	12
2	10
0	12
3	10
0	16
2	10
4	16
2	18
1	12
3	10
1	18
1	10
0	10
1	10
2	12
2	16
1	16

Margin (mm)	Years the old record stood
12	66
26	48
12	68
10	86
19	18
7	86
4	103
6	79
9	68
22	18
2	111
2	111
4	82
2	96
9	64
23	14
15	46
0	108
1	96
6	66
12	12
14	18
15	14
10	44
4	82
11	46
1	83
3	74
4	66
13	18
1	82
1	74
23	14
0	82
0	86
0	82
1	82
0	79
4	62
3	66
2	66
0	79
1	76
9	44
3	66
1	74
1	66
16	6
6	50
5	44
2	62
1	62
0	68
7	44
8	38
21	14
3	44
6	44
5	50
8	14
6	40
5	36
3	40
4	40
1	62
8	18
10	14
8	12
9	14
5	28
10	14
1	40
8	14
10	14
2	38
3	28
2	44
0	38
6	18
2	40
0	50
4	12
5	10
2	40
2	40
4	14
10	10
1	44
3	14
3	11
1	40
3	12
2	18
1	40
3	10
0	44
2	15
0	40
3	18
3	18
3	18
1	12
3	4
2	10
2	28
2	12
0	12
5	12
2	10
0	12
3	10
0	16
2	10
4	16
2	18
1	12
3	10
1	18
1	10
0	10
1	10
2	12
2	16
1	16