Author: WEXA

Cold spell occuring from October 14 2025 to November 01 2025 at 69.0°N 183.0°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 19 days

Time span: October 14 2025 to November 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -9.1 °C
  • Mean temperature: -15.1 °C
  • Minimum temperature anomaly: -19.4 °C
  • Minimum temperature: -28.8 °C

Event center: 69.0°N 183.0°E

Area affected: 308207 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-Oct-14_to_2025-Nov-01_183.0_69.0

Cold spell occuring from October 13 2025 to October 16 2025 at 44.5°N 238.5°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 4 days

Time span: October 13 2025 to October 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.7 °C
  • Mean temperature: 5.8 °C
  • Minimum temperature anomaly: -6.4 °C
  • Minimum temperature: 1.2 °C

Event center: 44.5°N 238.5°E

Area affected: 68953 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-Oct-13_to_2025-Oct-16_238.5_44.5

Heat wave occuring from October 13 2025 to October 23 2025 at -30.5°S 290.5°E

Download data: JSON

Event type: Heat wave

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

  • Argentina
  • Chile

Duration: 11 days

Time span: October 13 2025 to October 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.3 °C
  • Mean temperature: 8.7 °C
  • Maximum temperature anomaly: 6.4 °C
  • Maximum temperature: 20.8 °C

Event center: -30.5°S 290.5°E

Area affected: 71331 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-Oct-13_to_2025-Oct-23_290.5_-30.5

Cold spell occuring from October 13 2025 to October 16 2025 at 32.5°N 22.5°E

Download data: JSON

Event type: Cold spell

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

  • Libya

Duration: 4 days

Time span: October 13 2025 to October 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.0 °C
  • Mean temperature: 20.7 °C
  • Minimum temperature anomaly: -3.6 °C
  • Minimum temperature: 16.5 °C

Event center: 32.5°N 22.5°E

Area affected: 57072 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-Oct-13_to_2025-Oct-16_22.5_32.5

Heat wave occuring from October 13 2025 to October 24 2025 at 10.5°N 108.0°E

Download data: JSON

Event type: Heat wave

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

  • Cambodia
  • Viet Nam

Duration: 12 days

Time span: October 13 2025 to October 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 28.0 °C
  • Maximum temperature anomaly: 2.1 °C
  • Maximum temperature: 29.8 °C

Event center: 10.5°N 108.0°E

Area affected: 191311 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-Oct-13_to_2025-Oct-24_108.0_10.5

Heat wave occuring from October 13 2025 to October 15 2025 at -20.0°S 135.0°E

Download data: JSON

Event type: Heat wave

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

  • Australia

Duration: 3 days

Time span: October 13 2025 to October 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.1 °C
  • Mean temperature: 31.6 °C
  • Maximum temperature anomaly: 5.5 °C
  • Maximum temperature: 32.9 °C

Event center: -20.0°S 135.0°E

Area affected: 121551 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-Oct-13_to_2025-Oct-15_135.0_-20.0

Heat wave occuring from October 12 2025 to October 18 2025 at 64.5°N 212.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 7 days

Time span: October 12 2025 to October 18 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.3 °C
  • Mean temperature: 2.8 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 7.6 °C

Event center: 64.5°N 212.0°E

Area affected: 104328 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-Oct-12_to_2025-Oct-18_212.0_64.5

Heat wave occuring from October 12 2025 to October 19 2025 at -19.5°S 26.0°E

Download data: JSON

Event type: Heat wave

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

  • Botswana
  • Namibia
  • South Africa
  • Zambia
  • Zimbabwe

Duration: 8 days

Time span: October 12 2025 to October 19 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.6 °C
  • Mean temperature: 29.8 °C
  • Maximum temperature anomaly: 5.3 °C
  • Maximum temperature: 32.7 °C

Event center: -19.5°S 26.0°E

Area affected: 463783 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-Oct-12_to_2025-Oct-19_26.0_-19.5

Heat wave occuring from October 12 2025 to October 15 2025 at 34.0°N 355.5°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Morocco

Duration: 4 days

Time span: October 12 2025 to October 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 20.1 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 23.9 °C

Event center: 34.0°N 355.5°E

Area affected: 67280 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-Oct-12_to_2025-Oct-15_355.5_34.0

Heat wave occuring from October 11 2025 to October 16 2025 at -22.0°S 32.0°E

Download data: JSON

Event type: Heat wave

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

  • Mozambique
  • Zimbabwe

Duration: 6 days

Time span: October 11 2025 to October 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.7 °C
  • Mean temperature: 28.6 °C
  • Maximum temperature anomaly: 6.0 °C
  • Maximum temperature: 31.2 °C

Event center: -22.0°S 32.0°E

Area affected: 103115 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-Oct-11_to_2025-Oct-16_32.0_-22.0