Category: Extremes affecting Antarctica

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 8 days

Time span: July 04 2025 to July 11 2025

Statistics over entire affected area:

• Mean temperature anomaly: -9.1 °C
• Mean temperature: -26.0 °C
• Minimum temperature anomaly: -17.5 °C
• Minimum temperature: -38.7 °C

Event center: -66.5°S 81.5°E

Area affected: 262378 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-Jul-04_to_2025-Jul-11_81.5_-66.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 9 days

Time span: July 04 2025 to July 12 2025

Statistics over entire affected area:

• Mean temperature anomaly: -13.3 °C
• Mean temperature: -42.7 °C
• Minimum temperature anomaly: -20.1 °C
• Minimum temperature: -55.4 °C

Event center: -79.5°S 223.5°E

Area affected: 299128 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-Jul-04_to_2025-Jul-12_223.5_-79.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 6 days

Time span: July 01 2025 to July 06 2025

Statistics over entire affected area:

• Mean temperature anomaly: -9.3 °C
• Mean temperature: -56.9 °C
• Minimum temperature anomaly: -12.8 °C
• Minimum temperature: -60.0 °C

Event center: -73.5°S 152.0°E

Area affected: 88614 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-Jul-01_to_2025-Jul-06_152.0_-73.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 9 days

Time span: June 30 2025 to July 08 2025

Statistics over entire affected area:

• Mean temperature anomaly: -8.1 °C
• Mean temperature: -44.9 °C
• Minimum temperature anomaly: -15.1 °C
• Minimum temperature: -56.1 °C

Event center: -85.0°S 271.5°E

Area affected: 323040 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-Jun-30_to_2025-Jul-08_271.5_-85.0

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 17 days

Time span: June 30 2025 to July 16 2025

Statistics over entire affected area:

• Mean temperature anomaly: -10.1 °C
• Mean temperature: -53.0 °C
• Minimum temperature anomaly: -17.4 °C
• Minimum temperature: -79.4 °C

Event center: -63.0°S 110.0°E

Area affected: 4419302 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-Jun-30_to_2025-Jul-16_110.0_-63.0

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 6 days

Time span: June 28 2025 to July 03 2025

Statistics over entire affected area:

• Mean temperature anomaly: -8.2 °C
• Mean temperature: -45.0 °C
• Minimum temperature anomaly: -13.7 °C
• Minimum temperature: -52.0 °C

Event center: -74.0°S 355.5°E

Area affected: 149996 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-Jun-28_to_2025-Jul-03_355.5_-74.0

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 4 days

Time span: June 27 2025 to June 30 2025

Statistics over entire affected area:

• Mean temperature anomaly: -8.9 °C
• Mean temperature: -62.1 °C
• Minimum temperature anomaly: -13.3 °C
• Minimum temperature: -70.1 °C

Event center: -81.5°S 30.0°E

Area affected: 226729 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-Jun-27_to_2025-Jun-30_30.0_-81.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 6 days

Time span: June 26 2025 to July 01 2025

Statistics over entire affected area:

• Mean temperature anomaly: -8.3 °C
• Mean temperature: -33.7 °C
• Minimum temperature anomaly: -15.9 °C
• Minimum temperature: -44.6 °C

Event center: -72.5°S 70.5°E

Area affected: 165154 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-Jun-26_to_2025-Jul-01_70.5_-72.5