Author: WEXA

Heat wave occuring from January 02 2026 to January 06 2026 at 50.0°N 113.0°E

Download data: JSON

Event type: Heat wave

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

  • Mongolia
  • Russian Federation

Duration: 5 days

Time span: January 02 2026 to January 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 8.9 °C
  • Mean temperature: -12.9 °C
  • Maximum temperature anomaly: 12.4 °C
  • Maximum temperature: -8.6 °C

Event center: 50.0°N 113.0°E

Area affected: 66319 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_2026-Jan-02_to_2026-Jan-06_113.0_50.0

Heat wave occuring from January 01 2026 to January 05 2026 at 0.5°N 297.5°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 5 days

Time span: January 01 2026 to January 05 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 27.8 °C
  • Maximum temperature anomaly: 2.9 °C
  • Maximum temperature: 29.8 °C

Event center: 0.5°N 297.5°E

Area affected: 176067 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_2026-Jan-01_to_2026-Jan-05_297.5_0.5

Heat wave occuring from December 20 2025 to December 27 2025 at -57.0°S 314.0°E

Download data: JSON

Event type: Heat wave

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

  • South Georgia and the South Sandwich Islands

Duration: 8 days

Time span: December 20 2025 to December 27 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.9 °C
  • Mean temperature: 3.8 °C
  • Maximum temperature anomaly: 3.5 °C
  • Maximum temperature: 7.8 °C

Event center: -57.0°S 314.0°E

Area affected: 408226 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-Dec-20_to_2025-Dec-27_314.0_-57.0

Cold spell occuring from October 05 2025 to October 17 2025 at 25.5°N 345.0°E

Download data: JSON

Event type: Cold spell

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

  • Morocco

Duration: 13 days

Time span: October 05 2025 to October 17 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: 20.2 °C
  • Minimum temperature anomaly: -3.2 °C
  • Minimum temperature: 19.0 °C

Event center: 25.5°N 345.0°E

Area affected: 67852 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-05_to_2025-Oct-17_345.0_25.5

Heat wave occuring from June 03 2025 to June 08 2025 at -57.0°S 335.5°E

Download data: JSON

Event type: Heat wave

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

  • South Georgia and the South Sandwich Islands

Duration: 6 days

Time span: June 03 2025 to June 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: -0.2 °C
  • Maximum temperature anomaly: 9.1 °C
  • Maximum temperature: 2.3 °C

Event center: -57.0°S 335.5°E

Area affected: 144278 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-03_to_2025-Jun-08_335.5_-57.0

Cold spell occuring from January 19 2025 to January 23 2025 at -55.0°S 305.5°E

Download data: JSON

Event type: Cold spell

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

  • South Georgia and the South Sandwich Islands

Duration: 5 days

Time span: January 19 2025 to January 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.6 °C
  • Mean temperature: 1.4 °C
  • Minimum temperature anomaly: -3.1 °C
  • Minimum temperature: -1.9 °C

Event center: -55.0°S 305.5°E

Area affected: 563278 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-Jan-19_to_2025-Jan-23_305.5_-55.0

Heat wave occuring from December 24 2024 to January 09 2025 at -56.5°S 306.0°E

Download data: JSON

Event type: Heat wave

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

  • Falkland Islands

Duration: 17 days

Time span: December 24 2024 to January 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 9.8 °C
  • Maximum temperature anomaly: 4.0 °C
  • Maximum temperature: 16.5 °C

Event center: -56.5°S 306.0°E

Area affected: 1105928 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_2024-Dec-24_to_2025-Jan-09_306.0_-56.5

Cold spell occuring from August 22 2024 to August 26 2024 at -56.0°S 334.0°E

Download data: JSON

Event type: Cold spell

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

  • South Georgia and the South Sandwich Islands

Duration: 5 days

Time span: August 22 2024 to August 26 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -8.9 °C
  • Mean temperature: -14.8 °C
  • Minimum temperature anomaly: -12.0 °C
  • Minimum temperature: -20.9 °C

Event center: -56.0°S 334.0°E

Area affected: 166693 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_2024-Aug-22_to_2024-Aug-26_334.0_-56.0

Cold spell occuring from June 13 2024 to June 29 2024 at 21.5°N 342.5°E

Download data: JSON

Event type: Cold spell

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

  • Morocco

Duration: 17 days

Time span: June 13 2024 to June 29 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -1.3 °C
  • Mean temperature: 19.6 °C
  • Minimum temperature anomaly: -2.8 °C
  • Minimum temperature: 18.0 °C

Event center: 21.5°N 342.5°E

Area affected: 124767 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_2024-Jun-13_to_2024-Jun-29_342.5_21.5

Cold spell occuring from December 28 2023 to January 03 2024 at -54.5°S 312.0°E

Download data: JSON

Event type: Cold spell

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

  • Falkland Islands
  • South Georgia and the South Sandwich Islands

Duration: 7 days

Time span: December 28 2023 to January 03 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.3 °C
  • Mean temperature: 1.9 °C
  • Minimum temperature anomaly: -5.3 °C
  • Minimum temperature: -3.4 °C

Event center: -54.5°S 312.0°E

Area affected: 1735734 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_2023-Dec-28_to_2024-Jan-03_312.0_-54.5