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: 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

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

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

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

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

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

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

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

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 16 2025 to February 19 2025

Statistics over entire affected area:

• Mean temperature anomaly: 9.3 °C
• Mean temperature: -21.6 °C
• Maximum temperature anomaly: 13.2 °C
• Maximum temperature: 1.0 °C

Event center: -74.0°S 129.5°E

Area affected: 476690 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-16_to_2025-Feb-19_129.5_-74.0