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 18 2025 to July 25 2025

Statistics over entire affected area:

• Mean temperature anomaly: -9.1 °C
• Mean temperature: -22.9 °C
• Minimum temperature anomaly: -11.9 °C
• Minimum temperature: -27.7 °C

Event center: -60.5°S 4.5°E

Area affected: 687501 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-18_to_2025-Jul-25_4.5_-60.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 3 days

Time span: July 17 2025 to July 19 2025

Statistics over entire affected area:

• Mean temperature anomaly: -7.9 °C
• Mean temperature: -23.8 °C
• Minimum temperature anomaly: -9.3 °C
• Minimum temperature: -27.0 °C

Event center: -64.5°S 5.0°E

Area affected: 52152 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-17_to_2025-Jul-19_5.0_-64.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 17 days

Time span: July 15 2025 to July 31 2025

Statistics over entire affected area:

• Mean temperature anomaly: -12.6 °C
• Mean temperature: -40.6 °C
• Minimum temperature anomaly: -28.4 °C
• Minimum temperature: -57.4 °C

Event center: -80.5°S 206.5°E

Area affected: 2634190 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-15_to_2025-Jul-31_206.5_-80.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 5 days

Time span: July 10 2025 to July 14 2025

Statistics over entire affected area:

• Mean temperature anomaly: -8.6 °C
• Mean temperature: -27.8 °C
• Minimum temperature anomaly: -11.5 °C
• Minimum temperature: -31.9 °C

Event center: -69.5°S 1.0°E

Area affected: 53219 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-10_to_2025-Jul-14_1.0_-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: July 07 2025 to July 17 2025

Statistics over entire affected area:

• Mean temperature anomaly: -8.8 °C
• Mean temperature: -27.6 °C
• Minimum temperature anomaly: -12.2 °C
• Minimum temperature: -31.2 °C

Event center: -68.5°S 17.5°E

Area affected: 202843 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-07_to_2025-Jul-17_17.5_-68.5

Download data: JSON

Event type: Cold spell

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

• Antarctica

Duration: 10 days

Time span: July 06 2025 to July 15 2025

Statistics over entire affected area:

• Mean temperature anomaly: -5.8 °C
• Mean temperature: -6.9 °C
• Minimum temperature anomaly: -14.9 °C
• Minimum temperature: -26.6 °C

Event center: -64.0°S 225.0°E

Area affected: 3042937 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-06_to_2025-Jul-15_225.0_-64.0