Category: Extremes affecting Antarctica

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 11 days

Time span: April 20 2023 to April 30 2023

Statistics over entire affected area:

• Mean temperature anomaly: -3.3 °C
• Mean temperature: -5.8 °C
• Minimum temperature anomaly: -12.9 °C
• Minimum temperature: -29.6 °C

Event center: -67.0°S 33.0°E

Area affected: 1290397 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_2023-Apr-20_to_2023-Apr-30_33.0_-67.0

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 7 days

Time span: November 03 2020 to November 09 2020

Statistics over entire affected area:

• Mean temperature anomaly: -4.4 °C
• Mean temperature: -12.1 °C
• Minimum temperature anomaly: -6.3 °C
• Minimum temperature: -15.6 °C

Event center: -69.0°S 11.0°E

Area affected: 53145 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_2020-Nov-03_to_2020-Nov-09_11.0_-69.0

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 6 days

Time span: March 15 2026 to March 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: -7.7 °C
• Mean temperature: -28.6 °C
• Minimum temperature anomaly: -12.3 °C
• Minimum temperature: -43.5 °C

Event center: -67.0°S 88.5°E

Area affected: 78695 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_2026-Mar-15_to_2026-Mar-20_88.5_-67.0

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 14 2026 to March 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: -4.5 °C
• Mean temperature: -7.7 °C
• Minimum temperature anomaly: -9.8 °C
• Minimum temperature: -15.2 °C

Event center: -64.0°S 97.0°E

Area affected: 117733 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_2026-Mar-14_to_2026-Mar-20_97.0_-64.0

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 27 2026 to March 07 2026

Statistics over entire affected area:

• Mean temperature anomaly: -7.0 °C
• Mean temperature: -37.6 °C
• Minimum temperature anomaly: -12.4 °C
• Minimum temperature: -47.1 °C

Event center: -85.0°S 302.0°E

Area affected: 727354 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_2026-Feb-27_to_2026-Mar-07_302.0_-85.0

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 3 days

Time span: February 24 2026 to February 26 2026

Statistics over entire affected area:

• Mean temperature anomaly: -6.3 °C
• Mean temperature: -36.3 °C
• Minimum temperature anomaly: -8.0 °C
• Minimum temperature: -40.4 °C

Event center: -69.5°S 52.5°E

Area affected: 50209 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_2026-Feb-24_to_2026-Feb-26_52.5_-69.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 11 days

Time span: February 22 2026 to March 04 2026

Statistics over entire affected area:

• Mean temperature anomaly: -8.4 °C
• Mean temperature: -28.2 °C
• Minimum temperature anomaly: -11.5 °C
• Minimum temperature: -32.9 °C

Event center: -82.0°S 204.5°E

Area affected: 236969 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_2026-Feb-22_to_2026-Mar-04_204.5_-82.0

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 6 days

Time span: February 22 2026 to February 27 2026

Statistics over entire affected area:

• Mean temperature anomaly: -7.9 °C
• Mean temperature: -27.3 °C
• Minimum temperature anomaly: -11.1 °C
• Minimum temperature: -29.9 °C

Event center: -83.5°S 182.5°E

Area affected: 56612 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_2026-Feb-22_to_2026-Feb-27_182.5_-83.5