Category: Weather Extremes – all events

Heat wave occuring from August 03 2026 to August 15 2026 at -64.5°S 140.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 13 days

Time span: August 03 2026 to August 15 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 10.2 °C
  • Mean temperature: -6.2 °C
  • Maximum temperature anomaly: 21.4 °C
  • Maximum temperature: 6.7 °C

Event center: -64.5°S 140.0°E

Area affected: 2413939 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-Aug-03_to_2026-Aug-15_140.0_-64.5

Cold spell occuring from August 03 2026 to August 18 2026 at -46.5°S 290.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Chile

Duration: 16 days

Time span: August 03 2026 to August 18 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.0 °C
  • Mean temperature: -0.2 °C
  • Minimum temperature anomaly: -13.6 °C
  • Minimum temperature: -12.0 °C

Event center: -46.5°S 290.0°E

Area affected: 976883 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-Aug-03_to_2026-Aug-18_290.0_-46.5

Cold spell occuring from August 03 2026 to August 06 2026 at 69.0°N 127.5°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 4 days

Time span: August 03 2026 to August 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -6.8 °C
  • Mean temperature: 6.8 °C
  • Minimum temperature anomaly: -9.7 °C
  • Minimum temperature: -0.9 °C

Event center: 69.0°N 127.5°E

Area affected: 171404 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-Aug-03_to_2026-Aug-06_127.5_69.0

Cold spell occuring from August 02 2026 to August 04 2026 at 46.0°N 241.5°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 3 days

Time span: August 02 2026 to August 04 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.3 °C
  • Mean temperature: 17.0 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: 11.6 °C

Event center: 46.0°N 241.5°E

Area affected: 53790 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-Aug-02_to_2026-Aug-04_241.5_46.0

Cold spell occuring from August 01 2026 to August 11 2026 at -25.0°S 194.5°E

Download data: JSON

Event type: Cold spell

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

  • Fiji
  • Samoa
  • Vanuatu

Duration: 11 days

Time span: August 01 2026 to August 11 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.9 °C
  • Mean temperature: 20.6 °C
  • Minimum temperature anomaly: -3.5 °C
  • Minimum temperature: 13.1 °C

Event center: -25.0°S 194.5°E

Area affected: 5512907 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-Aug-01_to_2026-Aug-11_194.5_-25.0

Heat wave occuring from August 01 2026 to August 03 2026 at 5.5°N 20.0°E

Download data: JSON

Event type: Heat wave

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

  • Central African Republic

Duration: 3 days

Time span: August 01 2026 to August 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.5 °C
  • Mean temperature: 25.6 °C
  • Maximum temperature anomaly: 2.4 °C
  • Maximum temperature: 27.2 °C

Event center: 5.5°N 20.0°E

Area affected: 64509 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-Aug-01_to_2026-Aug-03_20.0_5.5

Cold spell occuring from August 01 2026 to August 05 2026 at 34.5°N 109.5°E

Download data: JSON

Event type: Cold spell

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

  • China

Duration: 5 days

Time span: August 01 2026 to August 05 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: 20.2 °C
  • Minimum temperature anomaly: -7.9 °C
  • Minimum temperature: 14.8 °C

Event center: 34.5°N 109.5°E

Area affected: 143116 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-Aug-01_to_2026-Aug-05_109.5_34.5

Heat wave occuring from July 31 2026 to August 07 2026 at -29.5°S 310.5°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 8 days

Time span: July 31 2026 to August 07 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 18.4 °C
  • Maximum temperature anomaly: 6.6 °C
  • Maximum temperature: 20.6 °C

Event center: -29.5°S 310.5°E

Area affected: 51029 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-Jul-31_to_2026-Aug-07_310.5_-29.5

Heat wave occuring from July 31 2026 to August 06 2026 at 19.5°N 81.5°E

Download data: JSON

Event type: Heat wave

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

  • India

Duration: 7 days

Time span: July 31 2026 to August 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.0 °C
  • Mean temperature: 27.8 °C
  • Maximum temperature anomaly: 2.9 °C
  • Maximum temperature: 31.4 °C

Event center: 19.5°N 81.5°E

Area affected: 171876 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-Jul-31_to_2026-Aug-06_81.5_19.5

Cold spell occuring from July 31 2026 to August 08 2026 at 64.5°N 15.5°E

Download data: JSON

Event type: Cold spell

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

  • Norway
  • Sweden

Duration: 9 days

Time span: July 31 2026 to August 08 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 10.2 °C
  • Minimum temperature anomaly: -5.5 °C
  • Minimum temperature: 6.3 °C

Event center: 64.5°N 15.5°E

Area affected: 109972 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-Jul-31_to_2026-Aug-08_15.5_64.5