Category: Extremes affecting Russian Federation

Cold spell occuring from August 19 2025 to August 28 2025 at 60.0°N 19.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Belarus
  • Denmark
  • Estonia
  • Finland
  • Germany
  • Hungary
  • Latvia
  • Lithuania
  • Norway
  • Poland
  • Romania
  • Russian Federation
  • Slovakia
  • Sweden
  • Ukraine

Duration: 10 days

Time span: August 19 2025 to August 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 11.1 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 1.3 °C

Event center: 60.0°N 19.0°E

Area affected: 3064720 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Aug-19_to_2025-Aug-28_19.0_60.0

Cold spell occuring from August 11 2025 to August 13 2025 at 48.5°N 113.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • China
  • Mongolia
  • Russian Federation

Duration: 3 days

Time span: August 11 2025 to August 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.8 °C
  • Mean temperature: 12.3 °C
  • Minimum temperature anomaly: -6.9 °C
  • Minimum temperature: 7.2 °C

Event center: 48.5°N 113.0°E

Area affected: 129541 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Aug-11_to_2025-Aug-13_113.0_48.5

Cold spell occuring from August 04 2025 to August 10 2025 at 66.5°N 129.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Russian Federation

Duration: 7 days

Time span: August 04 2025 to August 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.2 °C
  • Mean temperature: 8.3 °C
  • Minimum temperature anomaly: -11.2 °C
  • Minimum temperature: -0.7 °C

Event center: 66.5°N 129.5°E

Area affected: 766255 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Aug-04_to_2025-Aug-10_129.5_66.5

Cold spell occuring from August 03 2025 to August 10 2025 at 53.5°N 85.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Kazakhstan
  • Russian Federation

Duration: 8 days

Time span: August 03 2025 to August 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.1 °C
  • Mean temperature: 11.9 °C
  • Minimum temperature anomaly: -10.1 °C
  • Minimum temperature: 3.7 °C

Event center: 53.5°N 85.5°E

Area affected: 1473308 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Aug-03_to_2025-Aug-10_85.5_53.5

Heat wave occuring from August 03 2025 to August 05 2025 at 59.0°N 109.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Russian Federation

Duration: 3 days

Time span: August 03 2025 to August 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: 21.7 °C
  • Maximum temperature anomaly: 6.2 °C
  • Maximum temperature: 23.4 °C

Event center: 59.0°N 109.0°E

Area affected: 116566 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Aug-03_to_2025-Aug-05_109.0_59.0

Heat wave occuring from July 28 2025 to July 31 2025 at 61.5°N 84.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Russian Federation

Duration: 4 days

Time span: July 28 2025 to July 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 22.1 °C
  • Maximum temperature anomaly: 7.9 °C
  • Maximum temperature: 24.2 °C

Event center: 61.5°N 84.0°E

Area affected: 313085 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jul-28_to_2025-Jul-31_84.0_61.5

Heat wave occuring from July 26 2025 to July 31 2025 at 55.0°N 85.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Russian Federation

Duration: 6 days

Time span: July 26 2025 to July 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: 23.4 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 27.3 °C

Event center: 55.0°N 85.0°E

Area affected: 77237 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jul-26_to_2025-Jul-31_85.0_55.0

Heat wave occuring from July 18 2025 to July 21 2025 at 46.5°N 49.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Kazakhstan
  • Russian Federation

Duration: 4 days

Time span: July 18 2025 to July 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.1 °C
  • Mean temperature: 31.0 °C
  • Maximum temperature anomaly: 5.7 °C
  • Maximum temperature: 32.6 °C

Event center: 46.5°N 49.0°E

Area affected: 57209 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2025-Jul-18_to_2025-Jul-21_49.0_46.5

Cold spell occuring from July 17 2025 to August 09 2025 at 56.0°N 143.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Russian Federation

Duration: 24 days

Time span: July 17 2025 to August 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.8 °C
  • Mean temperature: 10.2 °C
  • Minimum temperature anomaly: -4.6 °C
  • Minimum temperature: 5.7 °C

Event center: 56.0°N 143.0°E

Area affected: 115707 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Jul-17_to_2025-Aug-09_143.0_56.0

Cold spell occuring from July 15 2025 to July 27 2025 at 63.0°N 62.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Mongolia
  • Russian Federation

Duration: 13 days

Time span: July 15 2025 to July 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.0 °C
  • Mean temperature: 10.4 °C
  • Minimum temperature anomaly: -11.6 °C
  • Minimum temperature: 1.5 °C

Event center: 63.0°N 62.0°E

Area affected: 3431784 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2025-Jul-15_to_2025-Jul-27_62.0_63.0