Category: Cold spells affecting Russian Federation

Download data: JSON

Event type: Cold spell

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

• Russian Federation

Duration: 11 days

Time span: September 30 2025 to October 10 2025

Statistics over entire affected area:

• Mean temperature anomaly: -8.4 °C
• Mean temperature: -17.7 °C
• Minimum temperature anomaly: -15.8 °C
• Minimum temperature: -25.0 °C

Event center: 63.0°N 142.0°E

Area affected: 68385 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-Sep-30_to_2025-Oct-10_142.0_63.0

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: September 29 2025 to October 03 2025

Statistics over entire affected area:

• Mean temperature anomaly: -5.6 °C
• Mean temperature: 1.8 °C
• Minimum temperature anomaly: -7.2 °C
• Minimum temperature: -0.5 °C

Event center: 60.0°N 33.5°E

Area affected: 81552 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-Sep-29_to_2025-Oct-03_33.5_60.0

Download data: JSON

Event type: Cold spell

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

• Russian Federation

Duration: 6 days

Time span: September 26 2025 to October 01 2025

Statistics over entire affected area:

• Mean temperature anomaly: -4.9 °C
• Mean temperature: -3.9 °C
• Minimum temperature anomaly: -7.5 °C
• Minimum temperature: -6.2 °C

Event center: 60.5°N 110.5°E

Area affected: 110455 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-Sep-26_to_2025-Oct-01_110.5_60.5

Download data: JSON

Event type: Cold spell

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

• Russian Federation

Duration: 16 days

Time span: September 26 2025 to October 11 2025

Statistics over entire affected area:

• Mean temperature anomaly: -8.0 °C
• Mean temperature: -15.6 °C
• Minimum temperature anomaly: -13.6 °C
• Minimum temperature: -28.0 °C

Event center: 67.5°N 133.5°E

Area affected: 312841 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-Sep-26_to_2025-Oct-11_133.5_67.5

Download data: JSON

Event type: Cold spell

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

• Russian Federation

Duration: 4 days

Time span: September 24 2025 to September 27 2025

Statistics over entire affected area:

• Mean temperature anomaly: -4.8 °C
• Mean temperature: -2.3 °C
• Minimum temperature anomaly: -6.3 °C
• Minimum temperature: -4.8 °C

Event center: 69.0°N 70.0°E

Area affected: 128854 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-Sep-24_to_2025-Sep-27_70.0_69.0

Download data: JSON

Event type: Cold spell

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

• Russian Federation

Duration: 8 days

Time span: September 20 2025 to September 27 2025

Statistics over entire affected area:

• Mean temperature anomaly: -5.1 °C
• Mean temperature: -5.2 °C
• Minimum temperature anomaly: -8.3 °C
• Minimum temperature: -12.6 °C

Event center: 67.5°N 133.5°E

Area affected: 86891 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-Sep-20_to_2025-Sep-27_133.5_67.5