Cold spell occuring from July 04 2025 to July 08 2025 at 58.0°N 139.0°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 5 days

Time span: July 04 2025 to July 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.9 °C
  • Mean temperature: 9.8 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 6.1 °C

Event center: 58.0°N 139.0°E

Area affected: 80715 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-04_to_2025-Jul-08_139.0_58.0

Cold spell occuring from June 30 2025 to July 02 2025 at 53.5°N 39.5°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 3 days

Time span: June 30 2025 to July 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.8 °C
  • Mean temperature: 14.3 °C
  • Minimum temperature anomaly: -6.5 °C
  • Minimum temperature: 12.5 °C

Event center: 53.5°N 39.5°E

Area affected: 78469 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-Jun-30_to_2025-Jul-02_39.5_53.5

Cold spell occuring from June 30 2025 to July 02 2025 at 64.0°N 157.5°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 3 days

Time span: June 30 2025 to July 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.1 °C
  • Mean temperature: 6.4 °C
  • Minimum temperature anomaly: -9.1 °C
  • Minimum temperature: 1.8 °C

Event center: 64.0°N 157.5°E

Area affected: 52516 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-Jun-30_to_2025-Jul-02_157.5_64.0

Heat wave occuring from June 30 2025 to July 02 2025 at 59.0°N 142.5°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: June 30 2025 to July 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.6 °C
  • Mean temperature: 13.3 °C
  • Maximum temperature anomaly: 5.7 °C
  • Maximum temperature: 16.2 °C

Event center: 59.0°N 142.5°E

Area affected: 60551 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-Jun-30_to_2025-Jul-02_142.5_59.0

Cold spell occuring from June 29 2025 to July 09 2025 at 40.5°N 39.0°E

Download data: JSON

Event type: Cold spell

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

  • Armenia
  • Azerbaijan
  • Georgia
  • Iran, Islamic Republic of
  • Iraq
  • Russian Federation
  • Saudi Arabia
  • Syrian Arab Republic
  • Türkiye

Duration: 11 days

Time span: June 29 2025 to July 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.0 °C
  • Mean temperature: 21.1 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: 7.1 °C

Event center: 40.5°N 39.0°E

Area affected: 760122 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-Jun-29_to_2025-Jul-09_39.0_40.5

Heat wave occuring from June 29 2025 to July 05 2025 at 52.0°N 162.0°E

Download data: JSON

Event type: Heat wave

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

  • Russian Federation

Duration: 7 days

Time span: June 29 2025 to July 05 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 10.3 °C
  • Maximum temperature anomaly: 5.0 °C
  • Maximum temperature: 15.4 °C

Event center: 52.0°N 162.0°E

Area affected: 111989 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-Jun-29_to_2025-Jul-05_162.0_52.0

Heat wave occuring from June 28 2025 to July 12 2025 at 66.5°N 193.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Russian Federation
  • United States

Duration: 15 days

Time span: June 28 2025 to July 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.0 °C
  • Mean temperature: 16.4 °C
  • Maximum temperature anomaly: 13.5 °C
  • Maximum temperature: 26.7 °C

Event center: 66.5°N 193.0°E

Area affected: 1060487 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-Jun-28_to_2025-Jul-12_193.0_66.5

Heat wave occuring from June 28 2025 to July 20 2025 at 76.0°N 78.0°E

Download data: JSON

Event type: Heat wave

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

  • Russian Federation

Duration: 23 days

Time span: June 28 2025 to July 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.7 °C
  • Mean temperature: 6.2 °C
  • Maximum temperature anomaly: 16.6 °C
  • Maximum temperature: 25.0 °C

Event center: 76.0°N 78.0°E

Area affected: 2406218 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-Jun-28_to_2025-Jul-20_78.0_76.0

Heat wave occuring from June 21 2025 to June 30 2025 at 65.5°N 189.0°E

Download data: JSON

Event type: Heat wave

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

  • Russian Federation

Duration: 10 days

Time span: June 21 2025 to June 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 10.9 °C
  • Maximum temperature anomaly: 8.3 °C
  • Maximum temperature: 17.0 °C

Event center: 65.5°N 189.0°E

Area affected: 81033 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-Jun-21_to_2025-Jun-30_189.0_65.5

Cold spell occuring from June 21 2025 to July 03 2025 at 73.5°N 60.5°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 13 days

Time span: June 21 2025 to July 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.6 °C
  • Mean temperature: -0.4 °C
  • Minimum temperature anomaly: -6.7 °C
  • Minimum temperature: -3.1 °C

Event center: 73.5°N 60.5°E

Area affected: 58451 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-Jun-21_to_2025-Jul-03_60.5_73.5