Extreme rain in Finland and 3 other countries, 15 to 19 September 2020

Name: Extreme rain in Finland and 3 other countries, 15 to 19 September 2020
Start: 2020-09-15
End: 2020-09-19
Location: Finland, Sweden, Russia, Norway

Extreme rain in Finland and 3 other countries, 15 to 19 September 2020: 119 records at 113 stations, peak on 16 September 2020. Closed.

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

Key Facts

Extreme rain in Finland and 3 other countries, 15 to 19 September 2020 set or tied 119 station records at 113 stations.
It ran from 15 September 2020 to 19 September 2020 (5 days) and its peak day was 16 September 2020.
Status: closed.
Vaala Pelso set a monthly record daily precipitation of 52.7 mm (2.1 in) on 16 September 2020.
The busiest day was 16 September 2020 with 64 records.
The oldest broken record in the ranked list had stood for 74 years.

Footprint

15 to 19 September 2020

The area covered by Extreme rain in Finland and 3 other countries, 15 to 19 September 2020 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Extreme rain in Finland and 3 other countries, 15 to 19 September 2020: stations that set records in the event
Station	Type	Value	Date
Vaala Pelso	Record daily precipitation	52.7 mm (2.1 in)	2020-09-16
Njandoma	Record daily precipitation	48.8 mm (1.9 in)	2020-09-17
Vesanto Sonkari	Record daily precipitation	30.5 mm (1.2 in)	2020-09-16
Maaninka Halola	Record daily precipitation	29.1 mm (1.1 in)	2020-09-16
Kalajoki Pitkasenkyla	Record daily precipitation	57.0 mm (2.2 in)	2020-09-16
Kalajoki Metsakyla	Record daily precipitation	53.1 mm (2.1 in)	2020-09-16
Kolezma	Record daily precipitation	33.0 mm (1.3 in)	2020-09-17
Kiuruvesi Korpijoki	Record daily precipitation	26.6 mm (1.0 in)	2020-09-16
Lovanger	Record daily precipitation	36.3 mm (1.4 in)	2020-09-16
Aanekoski Kalaniemi	Record daily precipitation	29.1 mm (1.1 in)	2020-09-16
Rautavaara Ala-Luosta	Record daily precipitation	35.3 mm (1.4 in)	2020-09-16
Suonenjoki Iisvesi	Record daily precipitation	25.9 mm (1.0 in)	2020-09-16
Karttula Kallioranta	Record daily precipitation	33.8 mm (1.3 in)	2020-09-16
Kargopol	Record daily precipitation	39.1 mm (1.5 in)	2020-09-17
Juuka Niemela	Record daily precipitation	33.1 mm (1.3 in)	2020-09-16
Valtimo Kk	Record daily precipitation	47.9 mm (1.9 in)	2020-09-16
Nurmes Mujejarvi	Record daily precipitation	42.2 mm (1.7 in)	2020-09-16
Rodkallen_A	Record daily precipitation	31.1 mm (1.2 in)	2020-09-16
Pielavesi Venetmaki	Record daily precipitation	30.4 mm (1.2 in)	2020-09-16
Kaustinen Tastula	Record daily precipitation	21.3 mm (0.8 in)	2020-09-16

Records per Day

Peak day 64

Records set or tied each day from 15 September 2020 to 19 September 2020. The most in one day was 64 on 16 September 2020.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in Finland and 3 other countries, 15 to 19 September 2020 ranked by margin
Valtimo Kk, 09-16	33.6 mm (1.3 in)
Nurmes Mujejarvi, 09-16	31.0 mm (1.2 in)
Rautavaara Ala-Luosta, 09-16	29.1 mm (1.1 in)
Rodkallen_A, 09-16	28.1 mm (1.1 in)
Karttula Kallioranta, 09-16	25.7 mm (1.0 in)
Pielavesi Venetmaki, 09-16	24.3 mm (1.0 in)
Aanekoski Kalaniemi, 09-16	23.4 mm (0.9 in)
Suonenjoki Iisvesi, 09-16	23.0 mm (0.9 in)
Juuka Niemela, 09-16	23.0 mm (0.9 in)
Kalajoki Pitkasenkyla, 09-16	22.7 mm (0.9 in)
Kalajoki Metsakyla, 09-16	22.6 mm (0.9 in)
Kargopol, 09-17	22.2 mm (0.9 in)
Vesanto Sonkari, 09-16	21.5 mm (0.8 in)
Kolezma, 09-17	20.9 mm (0.8 in)
Maaninka Halola, 09-16	20.7 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

119 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 Finland and 3 other countries, 15 to 19 September 2020
Margin (mm)	Years the old record stood
16	58
13	58
22	45
21	45
23	15
23	15
21	43
19	55
19	70
23	34
29	34
23	35
26	34
22	10
23	26
34	26
31	26
28	23
15	55
24	18
18	34
10	27
7	35
13	51
11	61
13	45
16	3
21	26
17	1
13	59
22	26
8	28
11	29
7	57
22	10
12	35
9	51
9	55
4	50
9	4
8	13
6	31
7	50
11	32
4	69
5	35
12	26
14	29
11	37
1	58
9	26
14	29
3	69
11	26
10	26
1	74
2	70
1	70
4	54
10	11
6	39
6	47
4	55
10	29
2	8
5	4
5	43
9	26
9	31
4	16
2	59
2	59
6	34
7	29
9	28
7	28
8	23
1	53
1	59
4	34
8	13
5	35
3	32
8	16
2	4
1	45
7	4
0	56
3	37
5	23
5	28
5	26
3	28
2	28
4	23
4	23
4	26
3	26
1	37
5	31
2	26
6	10
4	28
4	22
4	11
2	28
6	16
8	1
4	13
2	28
2	10
7	5
6	10
1	29
4	13
0	23
1	13
1	16
1	16

Compared With Other Events

Station records per event

Station records in Extreme rain in Finland and 3 other countries, 15 to 19 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 Finland and 3 other countries, 15 to 19 September 2020 (this event)	119 records

Every Record Set

20 of 119

Every record set or tied during Extreme rain in Finland and 3 other countries, 15 to 19 September 2020, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2020-09-16	Vaala Pelso	Record daily precipitation	52.7 mm (2.1 in)	15.8 mm (0.6 in)	58	67 of 100 (Major)
2020-09-16	Vesanto Sonkari	Record daily precipitation	30.5 mm (1.2 in)	21.5 mm (0.8 in)	45	59 of 100 (Notable)
2020-09-16	Maaninka Halola	Record daily precipitation	29.1 mm (1.1 in)	20.7 mm (0.8 in)	45	59 of 100 (Notable)
2020-09-16	Kalajoki Pitkasenkyla	Record daily precipitation	57.0 mm (2.2 in)	22.7 mm (0.9 in)	15	59 of 100 (Notable)
2020-09-16	Kalajoki Metsakyla	Record daily precipitation	53.1 mm (2.1 in)	22.6 mm (0.9 in)	15	59 of 100 (Notable)
2020-09-16	Kiuruvesi Korpijoki	Record daily precipitation	26.6 mm (1.0 in)	18.5 mm (0.7 in)	55	58 of 100 (Notable)
2020-09-16	Lovanger	Record daily precipitation	36.3 mm (1.4 in)	19.3 mm (0.8 in)	70	57 of 100 (Notable)
2020-09-16	Aanekoski Kalaniemi	Record daily precipitation	29.1 mm (1.1 in)	23.4 mm (0.9 in)	34	55 of 100 (Notable)
2020-09-16	Rautavaara Ala-Luosta	Record daily precipitation	35.3 mm (1.4 in)	29.1 mm (1.1 in)	34	55 of 100 (Notable)
2020-09-16	Suonenjoki Iisvesi	Record daily precipitation	25.9 mm (1.0 in)	23.0 mm (0.9 in)	35	54 of 100 (Notable)
2020-09-16	Karttula Kallioranta	Record daily precipitation	33.8 mm (1.3 in)	25.7 mm (1.0 in)	34	53 of 100 (Notable)
2020-09-16	Juuka Niemela	Record daily precipitation	33.1 mm (1.3 in)	23.0 mm (0.9 in)	26	52 of 100 (Notable)
2020-09-16	Valtimo Kk	Record daily precipitation	47.9 mm (1.9 in)	33.6 mm (1.3 in)	26	52 of 100 (Notable)
2020-09-16	Nurmes Mujejarvi	Record daily precipitation	42.2 mm (1.7 in)	31.0 mm (1.2 in)	26	52 of 100 (Notable)
2020-09-16	Rodkallen_A	Record daily precipitation	31.1 mm (1.2 in)	28.1 mm (1.1 in)	23	52 of 100 (Notable)
2020-09-16	Pielavesi Venetmaki	Record daily precipitation	30.4 mm (1.2 in)	24.3 mm (1.0 in)	18	48 of 100 (Notable)
2020-09-16	Kaustinen Tastula	Record daily precipitation	21.3 mm (0.8 in)	14.7 mm (0.6 in)	55	20 of 100 (Routine)
2020-09-17	Njandoma	Record daily precipitation	48.8 mm (1.9 in)	13.3 mm (0.5 in)	58	61 of 100 (Major)
2020-09-17	Kolezma	Record daily precipitation	33.0 mm (1.3 in)	20.9 mm (0.8 in)	43	59 of 100 (Notable)
2020-09-17	Kargopol	Record daily precipitation	39.1 mm (1.5 in)	22.2 mm (0.9 in)	10	53 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 119 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
16	58
13	58
22	45
21	45
23	15
23	15
21	43
19	55
19	70
23	34
29	34
23	35
26	34
22	10
23	26
34	26
31	26
28	23
15	55
24	18
18	34
10	27
7	35
13	51
11	61
13	45
16	3
21	26
17	1
13	59
22	26
8	28
11	29
7	57
22	10
12	35
9	51
9	55
4	50
9	4
8	13
6	31
7	50
11	32
4	69
5	35
12	26
14	29
11	37
1	58
9	26
14	29
3	69
11	26
10	26
1	74
2	70
1	70
4	54
10	11
6	39
6	47
4	55
10	29
2	8
5	4
5	43
9	26
9	31
4	16
2	59
2	59
6	34
7	29
9	28
7	28
8	23
1	53
1	59
4	34
8	13
5	35
3	32
8	16
2	4
1	45
7	4
0	56
3	37
5	23
5	28
5	26
3	28
2	28
4	23
4	23
4	26
3	26
1	37
5	31
2	26
6	10
4	28
4	22
4	11
2	28
6	16
8	1
4	13
2	28
2	10
7	5
6	10
1	29
4	13
0	23
1	13
1	16
1	16

Margin (mm)	Years the old record stood
16	58
13	58
22	45
21	45
23	15
23	15
21	43
19	55
19	70
23	34
29	34
23	35
26	34
22	10
23	26
34	26
31	26
28	23
15	55
24	18
18	34
10	27
7	35
13	51
11	61
13	45
16	3
21	26
17	1
13	59
22	26
8	28
11	29
7	57
22	10
12	35
9	51
9	55
4	50
9	4
8	13
6	31
7	50
11	32
4	69
5	35
12	26
14	29
11	37
1	58
9	26
14	29
3	69
11	26
10	26
1	74
2	70
1	70
4	54
10	11
6	39
6	47
4	55
10	29
2	8
5	4
5	43
9	26
9	31
4	16
2	59
2	59
6	34
7	29
9	28
7	28
8	23
1	53
1	59
4	34
8	13
5	35
3	32
8	16
2	4
1	45
7	4
0	56
3	37
5	23
5	28
5	26
3	28
2	28
4	23
4	23
4	26
3	26
1	37
5	31
2	26
6	10
4	28
4	22
4	11
2	28
6	16
8	1
4	13
2	28
2	10
7	5
6	10
1	29
4	13
0	23
1	13
1	16
1	16

Margin (mm)	Years the old record stood
16	58
13	58
22	45
21	45
23	15
23	15
21	43
19	55
19	70
23	34
29	34
23	35
26	34
22	10
23	26
34	26
31	26
28	23
15	55
24	18
18	34
10	27
7	35
13	51
11	61
13	45
16	3
21	26
17	1
13	59
22	26
8	28
11	29
7	57
22	10
12	35
9	51
9	55
4	50
9	4
8	13
6	31
7	50
11	32
4	69
5	35
12	26
14	29
11	37
1	58
9	26
14	29
3	69
11	26
10	26
1	74
2	70
1	70
4	54
10	11
6	39
6	47
4	55
10	29
2	8
5	4
5	43
9	26
9	31
4	16
2	59
2	59
6	34
7	29
9	28
7	28
8	23
1	53
1	59
4	34
8	13
5	35
3	32
8	16
2	4
1	45
7	4
0	56
3	37
5	23
5	28
5	26
3	28
2	28
4	23
4	23
4	26
3	26
1	37
5	31
2	26
6	10
4	28
4	22
4	11
2	28
6	16
8	1
4	13
2	28
2	10
7	5
6	10
1	29
4	13
0	23
1	13
1	16
1	16