Category: Heat waves affecting Antarctica

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 3 days

Time span: April 13 2025 to April 15 2025

Statistics over entire affected area:

• Mean temperature anomaly: 8.8 °C
• Mean temperature: -42.8 °C
• Maximum temperature anomaly: 11.4 °C
• Maximum temperature: -40.8 °C

Event center: -86.0°S 25.5°E

Area affected: 65092 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-Apr-13_to_2025-Apr-15_25.5_-86.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 4 days

Time span: April 12 2025 to April 15 2025

Statistics over entire affected area:

• Mean temperature anomaly: 5.7 °C
• Mean temperature: -1.0 °C
• Maximum temperature anomaly: 12.2 °C
• Maximum temperature: 0.5 °C

Event center: -72.0°S 267.0°E

Area affected: 129160 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-Apr-12_to_2025-Apr-15_267.0_-72.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 33 days

Time span: April 11 2025 to May 13 2025

Statistics over entire affected area:

• Mean temperature anomaly: 10.8 °C
• Mean temperature: -26.2 °C
• Maximum temperature anomaly: 24.7 °C
• Maximum temperature: 8.2 °C

Event center: -69.0°S 302.0°E

Area affected: 14721798 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-Apr-11_to_2025-May-13_302.0_-69.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 8 days

Time span: April 05 2025 to April 12 2025

Statistics over entire affected area:

• Mean temperature anomaly: 7.0 °C
• Mean temperature: -3.7 °C
• Maximum temperature anomaly: 14.2 °C
• Maximum temperature: 2.7 °C

Event center: -70.0°S 186.0°E

Area affected: 1183460 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-Apr-05_to_2025-Apr-12_186.0_-70.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 7 days

Time span: March 24 2025 to March 30 2025

Statistics over entire affected area:

• Mean temperature anomaly: 7.3 °C
• Mean temperature: -3.3 °C
• Maximum temperature anomaly: 9.5 °C
• Maximum temperature: -0.7 °C

Event center: -69.0°S 159.0°E

Area affected: 68167 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-24_to_2025-Mar-30_159.0_-69.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 7 days

Time span: March 14 2025 to March 20 2025

Statistics over entire affected area:

• Mean temperature anomaly: 8.0 °C
• Mean temperature: -40.0 °C
• Maximum temperature anomaly: 13.2 °C
• Maximum temperature: -27.3 °C

Event center: -80.0°S 125.0°E

Area affected: 682355 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-14_to_2025-Mar-20_125.0_-80.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 5 days

Time span: March 14 2025 to March 18 2025

Statistics over entire affected area:

• Mean temperature anomaly: 7.6 °C
• Mean temperature: -35.3 °C
• Maximum temperature anomaly: 11.5 °C
• Maximum temperature: -14.4 °C

Event center: -79.0°S 278.5°E

Area affected: 520201 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-14_to_2025-Mar-18_278.5_-79.0

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