Category: Extremes affecting Antarctica

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 22 2026 to February 25 2026

Statistics over entire affected area:

• Mean temperature anomaly: 5.5 °C
• Mean temperature: -2.1 °C
• Maximum temperature anomaly: 8.5 °C
• Maximum temperature: -1.0 °C

Event center: -77.0°S 323.5°E

Area affected: 105063 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-Feb-22_to_2026-Feb-25_323.5_-77.0

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 11 days

Time span: February 15 2026 to February 25 2026

Statistics over entire affected area:

• Mean temperature anomaly: 1.9 °C
• Mean temperature: 6.6 °C
• Maximum temperature anomaly: 3.5 °C
• Maximum temperature: 11.5 °C

Event center: -61.5°S 166.5°E

Area affected: 803545 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-Feb-15_to_2026-Feb-25_166.5_-61.5

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 15 2026 to February 18 2026

Statistics over entire affected area:

• Mean temperature anomaly: 6.8 °C
• Mean temperature: -10.7 °C
• Maximum temperature anomaly: 8.4 °C
• Maximum temperature: -7.8 °C

Event center: -83.5°S 196.0°E

Area affected: 52610 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-Feb-15_to_2026-Feb-18_196.0_-83.5

Download data: JSON

Event type: Heat wave

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

• Antarctica

Duration: 6 days

Time span: February 15 2026 to February 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: 6.5 °C
• Mean temperature: -20.6 °C
• Maximum temperature anomaly: 11.6 °C
• Maximum temperature: -4.8 °C

Event center: -82.5°S 315.5°E

Area affected: 690641 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-Feb-15_to_2026-Feb-20_315.5_-82.5

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 14 2026 to February 16 2026

Statistics over entire affected area:

• Mean temperature anomaly: 1.1 °C
• Mean temperature: 0.8 °C
• Maximum temperature anomaly: 1.6 °C
• Maximum temperature: 1.1 °C

Event center: -66.5°S 7.5°E

Area affected: 63154 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-Feb-14_to_2026-Feb-16_7.5_-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 13 2026 to February 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: 1.3 °C
• Mean temperature: 0.2 °C
• Maximum temperature anomaly: 1.9 °C
• Maximum temperature: 0.7 °C

Event center: -68.5°S 345.0°E

Area affected: 143077 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-Feb-13_to_2026-Feb-20_345.0_-68.5