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Built 2026-10-19 (19 October 2026)

Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021

Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021: 193 records at 183 stations, peak on 4 May 2021. Closed.

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

Key Facts

  • Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021 set or tied 193 station records at 183 stations.
  • It ran from 30 April 2021 to 9 May 2021 (10 days) and its peak day was 4 May 2021.
  • Status: closed.
  • Backefors set a daily record precipitation of 40.3 mm (1.6 in) on 4 May 2021.
  • The busiest day was 4 May 2021 with 67 records.
  • The oldest broken record in the ranked list had stood for 115 years.

Footprint

30 April to 9 May 2021
Footprint of Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021 The area covered by Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021 is outlined, with 20 of the stations that set records marked, coloured by record type.
The area covered by Extreme rain in Sweden and 11 other countries, 30 April to 9 May 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 Sweden and 11 other countries, 30 April to 9 May 2021: stations that set records in the event
StationTypeValueDate
BackeforsRecord daily precipitation40.3 mm (1.6 in)2021-05-04
Praha-LibusRecord daily precipitation31.5 mm (1.2 in)2021-05-02
LawicaRecord daily precipitation26.2 mm (1.0 in)2021-05-03
Pemfling-PitzlingRecord daily precipitation31.6 mm (1.2 in)2021-05-01
AttenkamRecord daily precipitation30.2 mm (1.2 in)2021-04-30
NelaugRecord daily precipitation42.2 mm (1.7 in)2021-05-04
FlossenburgRecord daily precipitation33.5 mm (1.3 in)2021-05-01
PrimdaRecord daily precipitation29.2 mm (1.1 in)2021-05-02
FichtelbergRecord daily precipitation20.7 mm (0.8 in)2021-05-01
ChebRecord daily precipitation21.6 mm (0.9 in)2021-05-02
ErfdeRecord daily precipitation20.0 mm (0.8 in)2021-05-04
UddevallaRecord daily precipitation20.5 mm (0.8 in)2021-05-04
VanersborgRecord daily precipitation15.5 mm (0.6 in)2021-05-04
OrebroRecord daily precipitation16.8 mm (0.7 in)2021-05-04
Vallnora_DRecord daily precipitation18.4 mm (0.7 in)2021-05-05
Nummi-Pusula LeppakorpiRecord daily precipitation23.6 mm (0.9 in)2021-05-06
LjubanRecord daily precipitation20.1 mm (0.8 in)2021-05-06
NarvaRecord daily precipitation12.7 mm (0.5 in)2021-05-07
Ilomantsi NaarvaRecord daily precipitation24.4 mm (1.0 in)2021-05-08
SortavalaRecord daily precipitation20.8 mm (0.8 in)2021-05-08

Records per Day

Peak day 67
Records per day during Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021 Records set or tied each day from 30 April 2021 to 9 May 2021. The most in one day was 67 on 4 May 2021. 0 20 40 60 80 04-3005-0105-0205-0305-0405-0505-0605-0705-0805-09
Records set or tied each day from 30 April 2021 to 9 May 2021. The most in one day was 67 on 4 May 2021.
Records per day during Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021
DateRecords
2021-04-301
2021-05-0126
2021-05-0219
2021-05-0310
2021-05-0467
2021-05-0522
2021-05-0631
2021-05-075
2021-05-087
2021-05-095

Top Records by Margin

Margin over the record replaced
Top records of Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021 ranked by margin
Backefors, 05-0428.1 mm (1.1 in)
Flossenburg, 05-0125.3 mm (1.0 in)
Nelaug, 05-0425.0 mm (1.0 in)
Praha-Libus, 05-0221.6 mm (0.9 in)
Primda, 05-0219.5 mm (0.8 in)
Pemfling-Pitzling, 05-0116.8 mm (0.7 in)
Lawica, 05-0315.3 mm (0.6 in)
Nummi-Pusula Leppakorpi, 05-0615.0 mm (0.6 in)
Ilomantsi Naarva, 05-0814.4 mm (0.6 in)
Ljuban, 05-0614.4 mm (0.6 in)
Attenkam, 04-3014.2 mm (0.6 in)
Vallnora_D, 05-0512.3 mm (0.5 in)
Sortavala, 05-0810.8 mm (0.4 in)
Cheb, 05-0210.7 mm (0.4 in)
Uddevalla, 05-048.1 mm (0.32 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 Sweden and 11 other countries, 30 April to 9 May 2021 193 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 30 60 90 120 08152330 Margin (mm) Years the old record stood
193 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 Sweden and 11 other countries, 30 April to 9 May 2021
Margin (mm)Years the old record stood
2824
1172
1448
2243
1548
1180
1436
1738
1523
1447
396
2524
3104
1224
208
390
254
866
1114
1110
296
2115
666
194
570
1336
862
168
1924
839
1220
1038
470
754
939
756
1224
1232
1615
364
1119
566
752
354
562
158
370
542
264
460
272
942
1724
624
648
134
462
175
136
818
462
270
256
542
811
360
1039
452
356
136
076
927
262
170
86
632
166
260
255
534
724
116
347
262
256
156
148
252
542
062
425
254
052
619
339
434
348
104
156
152
430
96
422
234
156
912
424
332
138
138
338
86
338
518
238
138
520
616
516
524
340
424
68
434
624
234
324
424
519
319
416
427
134
423
427
612
232
219
224
50
87
135
142
511
224
024
324
324
96
615
124
119
68
032
516
412
219
124
124
016
224
219
66
124
219
124
36
124
219
119
14
019
020
024
17
123
36
011
216
120
120
112
023
119
116
112
018
06
118
06
04
16
16

Compared With Other Events

Station records per event
Station records in Extreme rain in Sweden and 11 other countries, 30 April to 9 May 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 Sweden and 11 other countries, 30 April to 9 May 2021 (this event)193 records

Every Record Set

20 of 193
Every record set or tied during Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021, in date order
DateStationRecordValueMarginYears stoodSignificance
2021-04-30AttenkamRecord daily precipitation30.2 mm (1.2 in)14.2 mm (0.6 in)4746 of 100 (Notable)
2021-05-01Pemfling-PitzlingRecord daily precipitation31.6 mm (1.2 in)16.8 mm (0.7 in)3847 of 100 (Notable)
2021-05-01FlossenburgRecord daily precipitation33.5 mm (1.3 in)25.3 mm (1.0 in)442 of 100 (Notable)
2021-05-01FichtelbergRecord daily precipitation20.7 mm (0.8 in)3.1 mm (0.12 in)10420 of 100 (Routine)
2021-05-02Praha-LibusRecord daily precipitation31.5 mm (1.2 in)21.6 mm (0.9 in)4350 of 100 (Notable)
2021-05-02PrimdaRecord daily precipitation29.2 mm (1.1 in)19.5 mm (0.8 in)842 of 100 (Notable)
2021-05-02ChebRecord daily precipitation21.6 mm (0.9 in)10.7 mm (0.4 in)8020 of 100 (Routine)
2021-05-03LawicaRecord daily precipitation26.2 mm (1.0 in)15.3 mm (0.6 in)4850 of 100 (Notable)
2021-05-04BackeforsRecord daily precipitation40.3 mm (1.6 in)28.1 mm (1.1 in)2454 of 100 (Notable)
2021-05-04NelaugRecord daily precipitation42.2 mm (1.7 in)25.0 mm (1.0 in)2445 of 100 (Notable)
2021-05-04ErfdeRecord daily precipitation20.0 mm (0.8 in)3.4 mm (0.13 in)9020 of 100 (Routine)
2021-05-04UddevallaRecord daily precipitation20.5 mm (0.8 in)8.1 mm (0.32 in)6620 of 100 (Routine)
2021-05-04VanersborgRecord daily precipitation15.5 mm (0.6 in)1.0 mm (0.04 in)11420 of 100 (Routine)
2021-05-04OrebroRecord daily precipitation16.8 mm (0.7 in)1.1 mm (0.04 in)11020 of 100 (Routine)
2021-05-05Vallnora_DRecord daily precipitation18.4 mm (0.7 in)12.3 mm (0.5 in)2420 of 100 (Routine)
2021-05-06Nummi-Pusula LeppakorpiRecord daily precipitation23.6 mm (0.9 in)15.0 mm (0.6 in)2320 of 100 (Routine)
2021-05-06LjubanRecord daily precipitation20.1 mm (0.8 in)14.4 mm (0.6 in)4820 of 100 (Routine)
2021-05-07NarvaRecord daily precipitation12.7 mm (0.5 in)3.1 mm (0.12 in)9620 of 100 (Routine)
2021-05-08Ilomantsi NaarvaRecord daily precipitation24.4 mm (1.0 in)14.4 mm (0.6 in)3620 of 100 (Routine)
2021-05-08SortavalaRecord daily precipitation20.8 mm (0.8 in)10.8 mm (0.4 in)7220 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 193 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.