Author: WEXA

Heat wave occuring from October 18 2025 to October 23 2025 at -55.0°S 300.0°E

Download data: JSON

Event type: Heat wave

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

  • Argentina
  • Chile

Duration: 6 days

Time span: October 18 2025 to October 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.6 °C
  • Mean temperature: 8.3 °C
  • Maximum temperature anomaly: 7.2 °C
  • Maximum temperature: 16.3 °C

Event center: -55.0°S 300.0°E

Area affected: 191245 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-18_to_2025-Oct-23_300.0_-55.0

Cold spell occuring from October 18 2025 to October 23 2025 at -73.5°S 242.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 6 days

Time span: October 18 2025 to October 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -8.9 °C
  • Mean temperature: -31.1 °C
  • Minimum temperature anomaly: -13.2 °C
  • Minimum temperature: -39.7 °C

Event center: -73.5°S 242.0°E

Area affected: 423974 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-18_to_2025-Oct-23_242.0_-73.5

Cold spell occuring from October 17 2025 to November 01 2025 at -24.5°S 314.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Brazil
  • Paraguay

Duration: 16 days

Time span: October 17 2025 to November 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.1 °C
  • Mean temperature: 18.7 °C
  • Minimum temperature anomaly: -9.4 °C
  • Minimum temperature: 8.6 °C

Event center: -24.5°S 314.0°E

Area affected: 6147334 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-17_to_2025-Nov-01_314.0_-24.5

Heat wave occuring from October 17 2025 to October 26 2025 at 23.5°N 74.0°E

Download data: JSON

Event type: Heat wave

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

  • India

Duration: 10 days

Time span: October 17 2025 to October 26 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 29.0 °C
  • Maximum temperature anomaly: 3.6 °C
  • Maximum temperature: 30.4 °C

Event center: 23.5°N 74.0°E

Area affected: 51054 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-17_to_2025-Oct-26_74.0_23.5

Heat wave occuring from October 17 2025 to October 23 2025 at 34.0°N 94.5°E

Download data: JSON

Event type: Heat wave

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

  • China

Duration: 7 days

Time span: October 17 2025 to October 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.5 °C
  • Mean temperature: -3.3 °C
  • Maximum temperature anomaly: 10.6 °C
  • Maximum temperature: 5.0 °C

Event center: 34.0°N 94.5°E

Area affected: 468448 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-17_to_2025-Oct-23_94.5_34.0

Cold spell occuring from October 16 2025 to October 28 2025 at -84.0°S 295.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 13 days

Time span: October 16 2025 to October 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.3 °C
  • Mean temperature: -37.7 °C
  • Minimum temperature anomaly: -10.0 °C
  • Minimum temperature: -46.7 °C

Event center: -84.0°S 295.5°E

Area affected: 478354 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-16_to_2025-Oct-28_295.5_-84.0

Heat wave occuring from October 16 2025 to October 31 2025 at 15.5°N 280.0°E

Download data: JSON

Event type: Heat wave

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

  • Colombia
  • Cuba
  • Jamaica
  • Mexico
  • United States

Duration: 16 days

Time span: October 16 2025 to October 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.0 °C
  • Mean temperature: 28.0 °C
  • Maximum temperature anomaly: 6.5 °C
  • Maximum temperature: 30.4 °C

Event center: 15.5°N 280.0°E

Area affected: 1861646 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-16_to_2025-Oct-31_280.0_15.5

Heat wave occuring from October 16 2025 to October 19 2025 at 34.0°N 272.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 4 days

Time span: October 16 2025 to October 19 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.4 °C
  • Mean temperature: 22.7 °C
  • Maximum temperature anomaly: 7.1 °C
  • Maximum temperature: 25.2 °C

Event center: 34.0°N 272.5°E

Area affected: 92959 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-16_to_2025-Oct-19_272.5_34.0

Heat wave occuring from October 14 2025 to October 19 2025 at 13.0°N 32.0°E

Download data: JSON

Event type: Heat wave

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

  • South Sudan
  • Sudan

Duration: 6 days

Time span: October 14 2025 to October 19 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 32.7 °C
  • Maximum temperature anomaly: 3.2 °C
  • Maximum temperature: 34.6 °C

Event center: 13.0°N 32.0°E

Area affected: 51172 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-14_to_2025-Oct-19_32.0_13.0

Heat wave occuring from October 14 2025 to October 17 2025 at -34.0°S 154.5°E

Download data: JSON

Event type: Heat wave

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

  • Australia

Duration: 4 days

Time span: October 14 2025 to October 17 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.5 °C
  • Mean temperature: 20.2 °C
  • Maximum temperature anomaly: 4.1 °C
  • Maximum temperature: 21.8 °C

Event center: -34.0°S 154.5°E

Area affected: 167023 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-14_to_2025-Oct-17_154.5_-34.0