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Built 2026-10-19 (19 October 2026)

Extreme rain in United States, 26 September to 1 October 2021

Extreme rain in United States, 26 September to 1 October 2021: 101 records at 98 stations, peak on 28 September 2021. Closed.

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

Key Facts

  • Extreme rain in United States, 26 September to 1 October 2021 set or tied 101 station records at 98 stations.
  • It ran from 26 September 2021 to 1 October 2021 (6 days) and its peak day was 28 September 2021.
  • Status: closed.
  • Everett set a daily record precipitation of 26.9 mm (1.1 in) on 1 October 2021.
  • The busiest day was 28 September 2021 with 46 records.
  • The oldest broken record in the ranked list had stood for 123 years.

Footprint

26 September to 1 October 2021
Footprint of Extreme rain in United States, 26 September to 1 October 2021 The area covered by Extreme rain in United States, 26 September to 1 October 2021 is outlined, with 20 of the stations that set records marked, coloured by record type.
The area covered by Extreme rain in United States, 26 September to 1 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 United States, 26 September to 1 October 2021: stations that set records in the event
StationTypeValueDate
EverettRecord daily precipitation26.9 mm (1.1 in)2021-10-01
ElmaRecord daily precipitation58.4 mm (2.3 in)2021-09-27
Detroit DamRecord daily precipitation39.4 mm (1.6 in)2021-09-28
Jump Off JoeRecord daily precipitation40.6 mm (1.6 in)2021-09-27
Railroad OverpassRecord daily precipitation30.5 mm (1.2 in)2021-09-27
Lemolo Lake 3 NNWRecord daily precipitation35.3 mm (1.4 in)2021-09-28
Stahl PeakRecord daily precipitation30.5 mm (1.2 in)2021-09-28
TroutdaleRecord daily precipitation25.1 mm (1.0 in)2021-09-28
Lookout Pt DamRecord daily precipitation25.7 mm (1.0 in)2021-09-28
Honeyman SpRecord daily precipitation30.5 mm (1.2 in)2021-09-27
Leaburg 1 SWRecord daily precipitation44.5 mm (1.8 in)2021-09-28
Chimacum 4 SRecord daily precipitation19.1 mm (0.8 in)2021-09-26
Adin MtnRecord daily precipitation17.8 mm (0.7 in)2021-09-27
Taylor ButteRecord daily precipitation12.7 mm (0.5 in)2021-09-27
Fish Lk.Record daily precipitation22.9 mm (0.9 in)2021-09-27
Bowman DamRecord daily precipitation16.3 mm (0.6 in)2021-09-28
CambridgeRecord daily precipitation13.2 mm (0.5 in)2021-09-28
John DayRecord daily precipitation21.1 mm (0.8 in)2021-09-28
Boundary DamRecord daily precipitation16.8 mm (0.7 in)2021-09-28
RosaliaRecord daily precipitation17.3 mm (0.7 in)2021-09-28

Records per Day

Peak day 46
Records per day during Extreme rain in United States, 26 September to 1 October 2021 Records set or tied each day from 26 September 2021 to 1 October 2021. The most in one day was 46 on 28 September 2021. 0 13 25 38 50 09-2609-2709-2809-2909-3010-01
Records set or tied each day from 26 September 2021 to 1 October 2021. The most in one day was 46 on 28 September 2021.
Records per day during Extreme rain in United States, 26 September to 1 October 2021
DateRecords
2021-09-265
2021-09-2744
2021-09-2846
2021-09-294
2021-09-301
2021-10-011

Top Records by Margin

Margin over the record replaced
Top records of Extreme rain in United States, 26 September to 1 October 2021 ranked by margin
Jump Off Joe, 09-2720.3 mm (0.8 in)
Railroad Overpass, 09-2720.3 mm (0.8 in)
Lemolo Lake 3 NNW, 09-2820.1 mm (0.8 in)
Stahl Peak, 09-2817.8 mm (0.7 in)
Fish Lk., 09-2717.8 mm (0.7 in)
Elma, 09-2717.0 mm (0.7 in)
Leaburg 1 SW, 09-2816.3 mm (0.6 in)
Honeyman Sp, 09-2715.8 mm (0.6 in)
Adin Mtn, 09-2715.3 mm (0.6 in)
Detroit Dam, 09-2813.5 mm (0.5 in)
Everett, 10-0111.2 mm (0.4 in)
John Day, 09-289.7 mm (0.38 in)
Bowman Dam, 09-288.7 mm (0.34 in)
Boundary Dam, 09-288.4 mm (0.33 in)
Lookout Pt Dam, 09-287.7 mm (0.30 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

Margin against age of the broken record in Extreme rain in United States, 26 September to 1 October 2021 101 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. 0 38 75 113 150 010203040 Margin (mm) Years the old record stood
101 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, 26 September to 1 October 2021
Margin (mm)Years the old record stood
7123
1040
1156
1740
280
1466
280
1835
2040
2026
1531
2026
1840
559
835
944
844
1626
839
168
359
1826
2026
2026
208
1528
259
318
1826
159
444
250
740
244
544
58
148
159
450
1335
839
526
426
716
710
539
535
540
1526
835
531
340
832
137
144
47
640
535
1026
535
340
240
726
531
823
826
910
710
227
58
1024
1310
108
98
526
326
324
326
826
324
123
124
032
123
320
127
710
28
88
88
18
38
58
38
310
210
310
32
02
38
32

Compared With Other Events

Station records per event
Station records in Extreme rain in United States, 26 September to 1 October 2021 compared with similar events
Extreme rain in United States and Mexico, 23 February to 15 March 20192,223 records
Extreme rain in United States, 3 to 19 January 20242,133 records
Extreme rain in Australia, 7 to 26 March 20212,099 records
Extreme rain in United States and Mexico, 29 September to 19 October 20181,970 records
Extreme rain in United States, 19 December 2022 to 13 January 20231,941 records
Extreme rain in United States, 26 September to 1 October 2021 (this event)101 records

Every Record Set

20 of 101
Every record set or tied during Extreme rain in United States, 26 September to 1 October 2021, in date order
DateStationRecordValueMarginYears stoodSignificance
2021-09-26Chimacum 4 SRecord daily precipitation19.1 mm (0.8 in)1.8 mm (0.07 in)8020 of 100 (Routine)
2021-09-27ElmaRecord daily precipitation58.4 mm (2.3 in)17.0 mm (0.7 in)4039 of 100 (Notable)
2021-09-27Jump Off JoeRecord daily precipitation40.6 mm (1.6 in)20.3 mm (0.8 in)4033 of 100 (Routine)
2021-09-27Railroad OverpassRecord daily precipitation30.5 mm (1.2 in)20.3 mm (0.8 in)2633 of 100 (Routine)
2021-09-27Honeyman SpRecord daily precipitation30.5 mm (1.2 in)15.8 mm (0.6 in)2628 of 100 (Routine)
2021-09-27Adin MtnRecord daily precipitation17.8 mm (0.7 in)15.3 mm (0.6 in)3120 of 100 (Routine)
2021-09-27Taylor ButteRecord daily precipitation12.7 mm (0.5 in)7.6 mm (0.30 in)3920 of 100 (Routine)
2021-09-27Fish Lk.Record daily precipitation22.9 mm (0.9 in)17.8 mm (0.7 in)3520 of 100 (Routine)
2021-09-28Detroit DamRecord daily precipitation39.4 mm (1.6 in)13.5 mm (0.5 in)6636 of 100 (Notable)
2021-09-28Lemolo Lake 3 NNWRecord daily precipitation35.3 mm (1.4 in)20.1 mm (0.8 in)2631 of 100 (Routine)
2021-09-28Stahl PeakRecord daily precipitation30.5 mm (1.2 in)17.8 mm (0.7 in)4031 of 100 (Routine)
2021-09-28TroutdaleRecord daily precipitation25.1 mm (1.0 in)5.0 mm (0.20 in)5930 of 100 (Routine)
2021-09-28Lookout Pt DamRecord daily precipitation25.7 mm (1.0 in)7.7 mm (0.30 in)4429 of 100 (Routine)
2021-09-28Leaburg 1 SWRecord daily precipitation44.5 mm (1.8 in)16.3 mm (0.6 in)827 of 100 (Routine)
2021-09-28Bowman DamRecord daily precipitation16.3 mm (0.6 in)8.7 mm (0.34 in)4420 of 100 (Routine)
2021-09-28CambridgeRecord daily precipitation13.2 mm (0.5 in)1.8 mm (0.07 in)8020 of 100 (Routine)
2021-09-28John DayRecord daily precipitation21.1 mm (0.8 in)9.7 mm (0.38 in)4020 of 100 (Routine)
2021-09-28Boundary DamRecord daily precipitation16.8 mm (0.7 in)8.4 mm (0.33 in)3520 of 100 (Routine)
2021-09-28RosaliaRecord daily precipitation17.3 mm (0.7 in)6.9 mm (0.27 in)12320 of 100 (Routine)
2021-10-01EverettRecord daily precipitation26.9 mm (1.1 in)11.2 mm (0.4 in)5643 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 101 records the event counts. The counts above use the full total.

Related Headlines

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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.