Heat wave in Russia and 3 other countries, 5 to 13 April 2021
Heat wave in Russia and 3 other countries, 5 to 13 April 2021: 120 records at 102 stations, peak on 6 April 2021. Closed.
Data as of . Last revised (2026-10-17).
Key Facts
- Heat wave in Russia and 3 other countries, 5 to 13 April 2021 set or tied 120 station records at 102 stations.
- It ran from 5 April 2021 to 13 April 2021 (9 days) and its peak day was 6 April 2021.
- Status: closed.
- Poronajsk set a daily record high maximum temperature of 13.5 C (56.3 F) on 11 April 2021.
- The busiest day was 6 April 2021 with 25 records.
- The oldest broken record in the ranked list had stood for 100 years.
Footprint
5 to 13 April 2021| Station | Type | Value | Date |
|---|---|---|---|
| Poronajsk | Record high maximum temperature | 13.5 C (56.3 F) | 2021-04-11 |
| Enisejsk | Record high maximum temperature | 16.9 C (62.4 F) | 2021-04-06 |
| Kjahta | Record high maximum temperature | 20.0 C (68.0 F) | 2021-04-08 |
| Krasnyj Jar | Record high minimum temperature | 8.1 C (46.6 F) | 2021-04-12 |
| Mogoca | Record high maximum temperature | 14.7 C (58.5 F) | 2021-04-09 |
| Borzja | Record high maximum temperature | 18.7 C (65.7 F) | 2021-04-09 |
| Sretensk | Record high maximum temperature | 18.8 C (65.8 F) | 2021-04-09 |
| Qiqihar | Record high minimum temperature | 7.2 C (45.0 F) | 2021-04-10 |
| Nogliki | Record high maximum temperature | 12.0 C (53.6 F) | 2021-04-11 |
| Nemuro | Record high minimum temperature | 5.5 C (41.9 F) | 2021-04-13 |
| Ekaterino-Nikolskoe | Record high minimum temperature | 4.1 C (39.4 F) | 2021-04-11 |
| Anucino | Record high minimum temperature | 7.6 C (45.7 F) | 2021-04-11 |
| Bajkit | Record high maximum temperature | 13.1 C (55.6 F) | 2021-04-06 |
| Uakit | Record high maximum temperature | 10.3 C (50.5 F) | 2021-04-08 |
| Bikin | Record high minimum temperature | 4.6 C (40.3 F) | 2021-04-10 |
| Hiroo | Record high maximum temperature | 19.2 C (66.6 F) | 2021-04-12 |
| Agzu | Record high minimum temperature | 0.9 C (33.6 F) | 2021-04-12 |
| Petrovskij Zavod | Record high minimum temperature | -2.2 C (28.0 F) | 2021-04-09 |
| Kirovskij | Record high minimum temperature | 5.4 C (41.7 F) | 2021-04-11 |
Records per Day
Peak day 25| Date | Records |
|---|---|
| 2021-04-05 | 9 |
| 2021-04-06 | 25 |
| 2021-04-07 | 5 |
| 2021-04-08 | 14 |
| 2021-04-09 | 17 |
| 2021-04-10 | 10 |
| 2021-04-11 | 20 |
| 2021-04-12 | 16 |
| 2021-04-13 | 4 |
Top Records by Margin
Margin over the record replaced| Anucino, 04-11 | |
|---|---|
| Petrovskij Zavod, 04-09 | |
| Kirovskij, 04-11 | |
| Qiqihar, 04-10 | |
| Hiroo, 04-12 | |
| Enisejsk, 04-06 | |
| Krasnyj Jar, 04-12 | |
| Uakit, 04-08 | |
| Poronajsk, 04-12 | |
| Kjahta, 04-08 | |
| Sretensk, 04-09 | |
| Nemuro, 04-13 | |
| Nogliki, 04-11 | |
| Agzu, 04-12 | |
| Poronajsk, 04-11 |
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 (C) | Years the old record stood |
|---|---|
| 0.7 | 100 |
| 2.8 | 80 |
| 1.0 | 80 |
| 2.8 | 75 |
| 0.1 | 83 |
| 0.4 | 83 |
| 3.1 | 67 |
| 1.0 | 83 |
| 0.9 | 75 |
| 1.0 | 66 |
| 0.5 | 75 |
| 6.3 | 31 |
| 1.2 | 60 |
| 0.1 | 76 |
| 1.4 | 71 |
| 3.1 | 59 |
| 0.9 | 68 |
| 0.7 | 71 |
| 3.8 | 44 |
| 3.4 | 46 |
| 1.1 | 56 |
| 1.0 | 56 |
| 0.3 | 60 |
| 1.1 | 56 |
| 0.2 | 60 |
| 0.1 | 60 |
| 0.1 | 56 |
| 0.9 | 44 |
| 2.6 | 40 |
| 5.5 | 8 |
| 0.6 | 44 |
| 1.9 | 31 |
| 3.4 | 22 |
| 5.4 | 23 |
| 1.6 | 39 |
| 2.8 | 31 |
| 0.6 | 31 |
| 1.4 | 36 |
| 0.7 | 32 |
| 1.2 | 20 |
| 2.6 | 22 |
| 1.3 | 32 |
| 1.3 | 31 |
| 1.7 | 22 |
| 0.4 | 31 |
| 2.5 | 16 |
| 3.4 | 12 |
| 2.5 | 31 |
| 1.6 | 22 |
| 2.1 | 26 |
| 3.6 | 14 |
| 0.8 | 31 |
| 0.6 | 23 |
| 1.8 | 23 |
| 0.2 | 32 |
| 2.3 | 18 |
| 2.6 | 12 |
| 1.8 | 22 |
| 1.0 | 20 |
| 2.3 | 23 |
| 1.5 | 23 |
| 2.4 | 23 |
| 3.1 | 14 |
| 2.6 | 12 |
| 2.0 | 26 |
| 3.6 | 14 |
| 2.2 | 16 |
| 0.9 | 26 |
| 3.4 | 12 |
| 3.8 | 2 |
| 1.2 | 22 |
| 1.9 | 31 |
| 3.6 | 14 |
| 0.4 | 14 |
| 0.5 | 26 |
| 4.8 | 8 |
| 1.8 | 12 |
| 0.8 | 12 |
| 0.5 | 22 |
| 2.9 | 3 |
| 0.3 | 20 |
| 0.2 | 22 |
| 1.1 | 23 |
| 1.2 | 22 |
| 3.3 | 0 |
| 1.5 | 16 |
| 4.3 | 0 |
| 1.0 | 16 |
| 1.5 | 14 |
| 4.2 | 0 |
| 4.5 | 0 |
| 1.1 | 0 |
| 0.3 | 18 |
| 0.7 | 15 |
| 2.4 | 8 |
| 0.7 | 7 |
| 1.3 | 7 |
| 0.4 | 18 |
| 1.7 | 0 |
| 0.3 | 18 |
| 0.9 | 16 |
| 2.6 | 7 |
| 2.8 | 0 |
| 0.3 | 12 |
| 1.3 | 4 |
| 0.9 | 8 |
| 1.1 | 8 |
| 0.8 | 4 |
| 1.0 | 3 |
| 1.3 | 8 |
| 0.1 | 16 |
| 0.3 | 0 |
| 0.1 | 8 |
| 0.8 | 0 |
| 0.4 | 0 |
| 0.1 | 0 |
| 0.1 | 3 |
| 0.2 | 0 |
| 1.1 | 4 |
| 0.3 | 8 |
Compared With Other Events
Station records per event| Heat wave in United States and Mexico, 16 January to 14 February 2024 | |
|---|---|
| Heat wave in United States, 28 January to 24 February 2026 | |
| Heat wave in United States and Mexico, 24 May to 19 June 2020 | |
| Heat wave in United States and Mexico, 26 March to 17 April 2021 | |
| Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 2022 | |
| Heat wave in Russia and 3 other countries, 5 to 13 April 2021 (this event) |
Every Record Set
20 of 120| Date | Station | Record | Value | Margin | Years stood | Significance |
|---|---|---|---|---|---|---|
| 2021-04-06 | Enisejsk | Record high maximum temperature | 16.9 C (62.4 F) | 2.8 C (5.0 F) | 80 | 38 of 100 (Notable) |
| 2021-04-06 | Bajkit | Record high maximum temperature | 13.1 C (55.6 F) | 0.1 C (0.2 F) | 76 | 30 of 100 (Routine) |
| 2021-04-08 | Kjahta | Record high maximum temperature | 20.0 C (68.0 F) | 1.0 C (1.8 F) | 80 | 35 of 100 (Notable) |
| 2021-04-08 | Uakit | Record high maximum temperature | 10.3 C (50.5 F) | 1.4 C (2.5 F) | 71 | 30 of 100 (Routine) |
| 2021-04-09 | Mogoca | Record high maximum temperature | 14.7 C (58.5 F) | 0.1 C (0.2 F) | 83 | 34 of 100 (Routine) |
| 2021-04-09 | Borzja | Record high maximum temperature | 18.7 C (65.7 F) | 0.4 C (0.7 F) | 83 | 34 of 100 (Routine) |
| 2021-04-09 | Sretensk | Record high maximum temperature | 18.8 C (65.8 F) | 1.0 C (1.8 F) | 83 | 33 of 100 (Routine) |
| 2021-04-09 | Petrovskij Zavod | Record high minimum temperature | -2.2 C (28.0 F) | 3.8 C (6.8 F) | 44 | 27 of 100 (Routine) |
| 2021-04-10 | Qiqihar | Record high minimum temperature | 7.2 C (45.0 F) | 3.1 C (5.6 F) | 67 | 33 of 100 (Routine) |
| 2021-04-10 | Bikin | Record high minimum temperature | 4.6 C (40.3 F) | 0.7 C (1.3 F) | 71 | 29 of 100 (Routine) |
| 2021-04-11 | Poronajsk | Record high maximum temperature | 13.5 C (56.3 F) | 0.7 C (1.3 F) | 100 | 41 of 100 (Notable) |
| 2021-04-11 | Nogliki | Record high maximum temperature | 12.0 C (53.6 F) | 0.9 C (1.6 F) | 75 | 33 of 100 (Routine) |
| 2021-04-11 | Ekaterino-Nikolskoe | Record high minimum temperature | 4.1 C (39.4 F) | 0.5 C (0.9 F) | 75 | 31 of 100 (Routine) |
| 2021-04-11 | Anucino | Record high minimum temperature | 7.6 C (45.7 F) | 6.3 C (11.3 F) | 31 | 31 of 100 (Routine) |
| 2021-04-11 | Kirovskij | Record high minimum temperature | 5.4 C (41.7 F) | 3.4 C (6.1 F) | 46 | 27 of 100 (Routine) |
| 2021-04-12 | Krasnyj Jar | Record high minimum temperature | 8.1 C (46.6 F) | 2.8 C (5.0 F) | 75 | 35 of 100 (Notable) |
| 2021-04-12 | Poronajsk | Record high minimum temperature | 3.2 C (37.8 F) | 1.2 C (2.2 F) | 60 | 31 of 100 (Routine) |
| 2021-04-12 | Hiroo | Record high maximum temperature | 19.2 C (66.6 F) | 3.1 C (5.6 F) | 59 | 29 of 100 (Routine) |
| 2021-04-12 | Agzu | Record high minimum temperature | 0.9 C (33.6 F) | 0.9 C (1.6 F) | 68 | 29 of 100 (Routine) |
| 2021-04-13 | Nemuro | Record high minimum temperature | 5.5 C (41.9 F) | 1.0 C (1.8 F) | 66 | 32 of 100 (Routine) |
The daily ledgers keep a limited number of records per day, so this list has 20 of the 120 records the event counts. The counts above use the full total.
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.