Category: Extremes affecting Antarctica

Heat wave occuring from March 13 2025 to March 29 2025 at -80.5°S 323.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 17 days

Time span: March 13 2025 to March 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 8.0 °C
  • Mean temperature: -17.2 °C
  • Maximum temperature anomaly: 18.1 °C
  • Maximum temperature: 2.7 °C

Event center: -80.5°S 323.0°E

Area affected: 2755259 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-Mar-13_to_2025-Mar-29_323.0_-80.5

Cold spell occuring from March 12 2025 to March 15 2025 at -82.0°S 195.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 4 days

Time span: March 12 2025 to March 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -9.5 °C
  • Mean temperature: -36.5 °C
  • Minimum temperature anomaly: -12.8 °C
  • Minimum temperature: -41.5 °C

Event center: -82.0°S 195.5°E

Area affected: 205143 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-Mar-12_to_2025-Mar-15_195.5_-82.0

Heat wave occuring from March 12 2025 to March 20 2025 at -59.5°S 44.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 9 days

Time span: March 12 2025 to March 20 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 1.6 °C
  • Mean temperature: 2.0 °C
  • Maximum temperature anomaly: 4.2 °C
  • Maximum temperature: 7.4 °C

Event center: -59.5°S 44.5°E

Area affected: 4522856 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-Mar-12_to_2025-Mar-20_44.5_-59.5

Heat wave occuring from March 12 2025 to March 17 2025 at -72.0°S 267.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 6 days

Time span: March 12 2025 to March 17 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 0.0 °C
  • Maximum temperature anomaly: 8.0 °C
  • Maximum temperature: 1.8 °C

Event center: -72.0°S 267.5°E

Area affected: 262937 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-Mar-12_to_2025-Mar-17_267.5_-72.0

Cold spell occuring from March 07 2025 to March 09 2025 at -67.5°S 314.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 3 days

Time span: March 07 2025 to March 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.1 °C
  • Mean temperature: -9.6 °C
  • Minimum temperature anomaly: -8.5 °C
  • Minimum temperature: -16.1 °C

Event center: -67.5°S 314.5°E

Area affected: 229535 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-Mar-07_to_2025-Mar-09_314.5_-67.5

Heat wave occuring from March 07 2025 to March 12 2025 at -76.0°S 139.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 6 days

Time span: March 07 2025 to March 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: -38.9 °C
  • Maximum temperature anomaly: 10.5 °C
  • Maximum temperature: -30.5 °C

Event center: -76.0°S 139.0°E

Area affected: 108201 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-Mar-07_to_2025-Mar-12_139.0_-76.0

Cold spell occuring from March 06 2025 to March 12 2025 at -85.5°S 271.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 7 days

Time span: March 06 2025 to March 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.2 °C
  • Mean temperature: -38.0 °C
  • Minimum temperature anomaly: -8.7 °C
  • Minimum temperature: -45.3 °C

Event center: -85.5°S 271.0°E

Area affected: 58204 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-Mar-06_to_2025-Mar-12_271.0_-85.5

Cold spell occuring from March 06 2025 to March 12 2025 at -77.5°S 5.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 7 days

Time span: March 06 2025 to March 12 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -7.2 °C
  • Mean temperature: -48.4 °C
  • Minimum temperature anomaly: -10.5 °C
  • Minimum temperature: -53.7 °C

Event center: -77.5°S 5.0°E

Area affected: 350429 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-Mar-06_to_2025-Mar-12_5.0_-77.5

Heat wave occuring from March 05 2025 to March 15 2025 at -66.5°S 99.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 11 days

Time span: March 05 2025 to March 15 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 5.2 °C
  • Mean temperature: -15.8 °C
  • Maximum temperature anomaly: 13.3 °C
  • Maximum temperature: 7.1 °C

Event center: -66.5°S 99.0°E

Area affected: 2804515 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-Mar-05_to_2025-Mar-15_99.0_-66.5

Cold spell occuring from March 05 2025 to March 09 2025 at -69.0°S 53.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 5 days

Time span: March 05 2025 to March 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.6 °C
  • Mean temperature: -34.6 °C
  • Minimum temperature anomaly: -9.6 °C
  • Minimum temperature: -43.3 °C

Event center: -69.0°S 53.0°E

Area affected: 138165 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-Mar-05_to_2025-Mar-09_53.0_-69.0