Category: Extremes affecting Antarctica

Cold spell occuring from February 27 2025 to March 02 2025 at -78.0°S 57.5°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: February 27 2025 to March 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.8 °C
  • Mean temperature: -46.3 °C
  • Minimum temperature anomaly: -6.0 °C
  • Minimum temperature: -52.5 °C

Event center: -78.0°S 57.5°E

Area affected: 60007 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-Feb-27_to_2025-Mar-02_57.5_-78.0

Heat wave occuring from February 24 2025 to March 03 2025 at -75.0°S 94.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 8 days

Time span: February 24 2025 to March 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.9 °C
  • Mean temperature: -36.0 °C
  • Maximum temperature anomaly: 8.4 °C
  • Maximum temperature: -29.3 °C

Event center: -75.0°S 94.0°E

Area affected: 161339 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-Feb-24_to_2025-Mar-03_94.0_-75.0

Heat wave occuring from February 24 2025 to March 08 2025 at -79.0°S 227.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 13 days

Time span: February 24 2025 to March 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 8.5 °C
  • Mean temperature: -16.0 °C
  • Maximum temperature anomaly: 17.6 °C
  • Maximum temperature: 0.5 °C

Event center: -79.0°S 227.0°E

Area affected: 2904837 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-Feb-24_to_2025-Mar-08_227.0_-79.0

Cold spell occuring from February 24 2025 to March 04 2025 at -70.0°S 288.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 9 days

Time span: February 24 2025 to March 04 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.4 °C
  • Mean temperature: -11.6 °C
  • Minimum temperature anomaly: -8.9 °C
  • Minimum temperature: -21.5 °C

Event center: -70.0°S 288.0°E

Area affected: 54969 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-Feb-24_to_2025-Mar-04_288.0_-70.0

Cold spell occuring from February 24 2025 to March 02 2025 at -63.0°S 303.5°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: February 24 2025 to March 02 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: -2.1 °C
  • Minimum temperature anomaly: -10.5 °C
  • Minimum temperature: -16.3 °C

Event center: -63.0°S 303.5°E

Area affected: 1251506 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-Feb-24_to_2025-Mar-02_303.5_-63.0

Cold spell occuring from February 23 2025 to March 01 2025 at -73.5°S 289.0°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: February 23 2025 to March 01 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.7 °C
  • Mean temperature: -18.7 °C
  • Minimum temperature anomaly: -10.5 °C
  • Minimum temperature: -24.7 °C

Event center: -73.5°S 289.0°E

Area affected: 58145 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-Feb-23_to_2025-Mar-01_289.0_-73.5

Heat wave occuring from February 22 2025 to March 06 2025 at -49.5°S 159.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • Australia
  • New Zealand

Duration: 13 days

Time span: February 22 2025 to March 06 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 6.5 °C
  • Maximum temperature anomaly: 7.9 °C
  • Maximum temperature: 25.7 °C

Event center: -49.5°S 159.5°E

Area affected: 4485076 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-Feb-22_to_2025-Mar-06_159.5_-49.5

Heat wave occuring from February 20 2025 to February 23 2025 at -71.0°S 5.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 4 days

Time span: February 20 2025 to February 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.4 °C
  • Mean temperature: -3.4 °C
  • Maximum temperature anomaly: 8.5 °C
  • Maximum temperature: 0.7 °C

Event center: -71.0°S 5.0°E

Area affected: 122578 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-Feb-20_to_2025-Feb-23_5.0_-71.0

Heat wave occuring from February 19 2025 to February 21 2025 at -83.5°S 117.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 3 days

Time span: February 19 2025 to February 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.2 °C
  • Mean temperature: -35.1 °C
  • Maximum temperature anomaly: 7.4 °C
  • Maximum temperature: -32.7 °C

Event center: -83.5°S 117.5°E

Area affected: 61204 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-Feb-19_to_2025-Feb-21_117.5_-83.5

Cold spell occuring from February 18 2025 to February 21 2025 at -76.5°S 42.0°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: February 18 2025 to February 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.2 °C
  • Mean temperature: -46.7 °C
  • Minimum temperature anomaly: -6.9 °C
  • Minimum temperature: -51.0 °C

Event center: -76.5°S 42.0°E

Area affected: 54926 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-Feb-18_to_2025-Feb-21_42.0_-76.5