Extreme rain in Australia, 29 September to 6 October 2018
Extreme rain in Australia, 29 September to 6 October 2018: 111 records at 97 stations, peak on 5 October 2018. Closed.
Data as of . Last revised (2026-10-17).
Key Facts
- Extreme rain in Australia, 29 September to 6 October 2018 set or tied 111 station records at 97 stations.
- It ran from 29 September 2018 to 6 October 2018 (8 days) and its peak day was 5 October 2018.
- Status: closed.
- Noongaar set a daily record precipitation of 26.0 mm (1.0 in) on 5 October 2018.
- The busiest day was 5 October 2018 with 47 records.
- The oldest broken record in the ranked list had stood for 103 years.
Footprint
29 September to 6 October 2018| Station | Type | Value | Date |
|---|---|---|---|
| Noongaar | Record daily precipitation | 26.0 mm (1.0 in) | 2018-10-05 |
| Yoorooga | Record daily precipitation | 31.0 mm (1.2 in) | 2018-10-01 |
| Wialki | Record daily precipitation | 39.4 mm (1.6 in) | 2018-10-01 |
| Edaggee | Record daily precipitation | 3.0 mm (0.12 in) | 2018-09-30 |
| Tamala | Record daily precipitation | 23.0 mm (0.9 in) | 2018-09-30 |
| Mumby | Record daily precipitation | 15.0 mm (0.6 in) | 2018-09-30 |
| Ravensthorpe | Record daily precipitation | 17.6 mm (0.7 in) | 2018-10-01 |
| Bunkin | Record daily precipitation | 11.2 mm (0.4 in) | 2018-10-02 |
| St Albans | Record daily precipitation | 13.0 mm (0.5 in) | 2018-10-03 |
| West Lort River | Record daily precipitation | 23.0 mm (0.9 in) | 2018-10-05 |
| Wialki South | Record daily precipitation | 10.0 mm (0.4 in) | 2018-10-05 |
| Brookton | Record daily precipitation | 15.8 mm (0.6 in) | 2018-10-05 |
| Pingelly | Record daily precipitation | 14.8 mm (0.6 in) | 2018-10-05 |
| Avoca | Record daily precipitation | 9.4 mm (0.37 in) | 2018-10-05 |
| Kalgoorlie-Boulder Airport | Record daily precipitation | 23.2 mm (0.9 in) | 2018-10-05 |
| Salmon Gums Res.STN. | Record daily precipitation | 17.4 mm (0.7 in) | 2018-10-05 |
| I Dunno | Record daily precipitation | 24.0 mm (0.9 in) | 2018-10-05 |
| Melrose | Record daily precipitation | 24.0 mm (0.9 in) | 2018-10-05 |
| Dalyup Park | Record daily precipitation | 15.8 mm (0.6 in) | 2018-10-06 |
Records per Day
Peak day 47| Date | Records |
|---|---|
| 2018-09-29 | 1 |
| 2018-09-30 | 10 |
| 2018-10-01 | 22 |
| 2018-10-02 | 11 |
| 2018-10-03 | 3 |
| 2018-10-04 | 12 |
| 2018-10-05 | 47 |
| 2018-10-06 | 5 |
Top Records by Margin
Margin over the record replaced| Melrose, 10-05 | |
|---|---|
| Kalgoorlie-Boulder Airport, 10-05 | |
| West Lort River, 10-05 | |
| Yoorooga, 10-01 | |
| Noongaar, 10-05 | |
| I Dunno, 10-05 | |
| Tamala, 09-30 | |
| Salmon Gums Res.STN., 10-05 | |
| Ravensthorpe, 10-01 | |
| Wialki South, 10-05 | |
| Mumby, 09-30 | |
| Wialki, 10-05 | |
| Wialki, 10-01 | |
| Bunkin, 10-02 | |
| Avoca, 10-05 |
Margin is how far the new value is beyond the record it replaced. Ties are not shown.
Margin Against Age of the Broken Record
| Margin (mm) | Years the old record stood |
|---|---|
| 21 | 80 |
| 18 | 60 |
| 20 | 53 |
| 18 | 60 |
| 7 | 100 |
| 16 | 8 |
| 10 | 79 |
| 20 | 37 |
| 3 | 103 |
| 6 | 81 |
| 3 | 99 |
| 4 | 93 |
| 1 | 101 |
| 1 | 101 |
| 19 | 15 |
| 2 | 99 |
| 4 | 42 |
| 6 | 49 |
| 6 | 53 |
| 3 | 79 |
| 7 | 60 |
| 11 | 33 |
| 3 | 71 |
| 1 | 88 |
| 8 | 36 |
| 3 | 76 |
| 2 | 76 |
| 10 | 28 |
| 8 | 32 |
| 8 | 15 |
| 5 | 53 |
| 15 | 27 |
| 1 | 79 |
| 1 | 84 |
| 8 | 36 |
| 6 | 47 |
| 2 | 68 |
| 4 | 63 |
| 5 | 47 |
| 4 | 47 |
| 6 | 44 |
| 4 | 47 |
| 7 | 32 |
| 8 | 8 |
| 4 | 40 |
| 2 | 53 |
| 8 | 28 |
| 10 | 24 |
| 6 | 39 |
| 10 | 12 |
| 4 | 43 |
| 6 | 36 |
| 5 | 24 |
| 1 | 48 |
| 1 | 47 |
| 3 | 49 |
| 4 | 32 |
| 3 | 51 |
| 5 | 16 |
| 10 | 9 |
| 2 | 48 |
| 1 | 48 |
| 10 | 24 |
| 2 | 32 |
| 0 | 52 |
| 5 | 27 |
| 7 | 12 |
| 1 | 41 |
| 0 | 36 |
| 2 | 36 |
| 1 | 32 |
| 2 | 24 |
| 4 | 43 |
| 8 | 25 |
| 6 | 15 |
| 0 | 32 |
| 10 | 12 |
| 0 | 33 |
| 1 | 16 |
| 4 | 27 |
| 2 | 27 |
| 1 | 24 |
| 2 | 8 |
| 3 | 24 |
| 4 | 33 |
| 1 | 36 |
| 0 | 24 |
| 5 | 15 |
| 1 | 36 |
| 4 | 15 |
| 4 | 20 |
| 7 | 4 |
| 7 | 9 |
| 1 | 25 |
| 5 | 9 |
| 0 | 27 |
| 2 | 24 |
| 5 | 9 |
| 1 | 9 |
| 0 | 28 |
| 4 | 4 |
| 1 | 28 |
| 3 | 15 |
| 2 | 0 |
| 1 | 7 |
| 3 | 9 |
| 1 | 0 |
| 2 | 8 |
| 1 | 12 |
| 1 | 9 |
| 1 | 1 |
Compared With Other Events
Station records per event| Extreme rain in United States and Mexico, 23 February to 15 March 2019 | |
|---|---|
| Extreme rain in United States, 3 to 19 January 2024 | |
| Extreme rain in Australia, 7 to 26 March 2021 | |
| Extreme rain in United States and Mexico, 29 September to 19 October 2018 | |
| Extreme rain in United States, 19 December 2022 to 13 January 2023 | |
| Extreme rain in Australia, 29 September to 6 October 2018 (this event) |
Every Record Set
20 of 111| Date | Station | Record | Value | Margin | Years stood | Significance |
|---|---|---|---|---|---|---|
| 2018-09-30 | Edaggee | Record daily precipitation | 3.0 mm (0.12 in) | 3.0 mm (0.12 in) | 103 | 20 of 100 (Routine) |
| 2018-09-30 | Tamala | Record daily precipitation | 23.0 mm (0.9 in) | 15.6 mm (0.6 in) | 8 | 20 of 100 (Routine) |
| 2018-09-30 | Mumby | Record daily precipitation | 15.0 mm (0.6 in) | 6.1 mm (0.24 in) | 81 | 20 of 100 (Routine) |
| 2018-10-01 | Yoorooga | Record daily precipitation | 31.0 mm (1.2 in) | 19.0 mm (0.7 in) | 15 | 42 of 100 (Notable) |
| 2018-10-01 | Wialki | Record daily precipitation | 39.4 mm (1.6 in) | 3.8 mm (0.15 in) | 42 | 38 of 100 (Notable) |
| 2018-10-01 | Ravensthorpe | Record daily precipitation | 17.6 mm (0.7 in) | 7.2 mm (0.28 in) | 100 | 20 of 100 (Routine) |
| 2018-10-02 | Bunkin | Record daily precipitation | 11.2 mm (0.4 in) | 3.6 mm (0.14 in) | 93 | 20 of 100 (Routine) |
| 2018-10-03 | St Albans | Record daily precipitation | 13.0 mm (0.5 in) | 3.1 mm (0.12 in) | 99 | 20 of 100 (Routine) |
| 2018-10-05 | Noongaar | Record daily precipitation | 26.0 mm (1.0 in) | 18.1 mm (0.7 in) | 60 | 59 of 100 (Notable) |
| 2018-10-05 | West Lort River | Record daily precipitation | 23.0 mm (0.9 in) | 20.0 mm (0.8 in) | 37 | 20 of 100 (Routine) |
| 2018-10-05 | Wialki | Record daily precipitation | 13.0 mm (0.5 in) | 6.1 mm (0.24 in) | 53 | 20 of 100 (Routine) |
| 2018-10-05 | Wialki South | Record daily precipitation | 10.0 mm (0.4 in) | 6.2 mm (0.24 in) | 49 | 20 of 100 (Routine) |
| 2018-10-05 | Brookton | Record daily precipitation | 15.8 mm (0.6 in) | 1.1 mm (0.04 in) | 101 | 20 of 100 (Routine) |
| 2018-10-05 | Pingelly | Record daily precipitation | 14.8 mm (0.6 in) | 1.1 mm (0.04 in) | 101 | 20 of 100 (Routine) |
| 2018-10-05 | Avoca | Record daily precipitation | 9.4 mm (0.37 in) | 3.3 mm (0.13 in) | 79 | 20 of 100 (Routine) |
| 2018-10-05 | Kalgoorlie-Boulder Airport | Record daily precipitation | 23.2 mm (0.9 in) | 20.4 mm (0.8 in) | 53 | 20 of 100 (Routine) |
| 2018-10-05 | Salmon Gums Res.STN. | Record daily precipitation | 17.4 mm (0.7 in) | 9.5 mm (0.37 in) | 79 | 20 of 100 (Routine) |
| 2018-10-05 | I Dunno | Record daily precipitation | 24.0 mm (0.9 in) | 17.6 mm (0.7 in) | 60 | 20 of 100 (Routine) |
| 2018-10-05 | Melrose | Record daily precipitation | 24.0 mm (0.9 in) | 21.0 mm (0.8 in) | 80 | 20 of 100 (Routine) |
| 2018-10-06 | Dalyup Park | Record daily precipitation | 15.8 mm (0.6 in) | 1.8 mm (0.07 in) | 99 | 20 of 100 (Routine) |
The daily ledgers keep a limited number of records per day, so this list has 20 of the 111 records the event counts. The counts above use the full total.
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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.