Category: Weather Extremes – all events

Heat wave occuring from June 29 2026 to July 02 2026 at -24.0°S 309.0°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 4 days

Time span: June 29 2026 to July 02 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 21.4 °C
  • Maximum temperature anomaly: 5.1 °C
  • Maximum temperature: 23.9 °C

Event center: -24.0°S 309.0°E

Area affected: 70786 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-Jun-29_to_2026-Jul-02_309.0_-24.0

Heat wave occuring from June 29 2026 to July 05 2026 at 54.5°N 82.5°E

Download data: JSON

Event type: Heat wave

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

  • Russian Federation

Duration: 7 days

Time span: June 29 2026 to July 05 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: 24.2 °C
  • Maximum temperature anomaly: 7.7 °C
  • Maximum temperature: 28.0 °C

Event center: 54.5°N 82.5°E

Area affected: 63648 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Jun-29_to_2026-Jul-05_82.5_54.5

Heat wave occuring from June 29 2026 to July 08 2026 at -12.0°S 14.5°E

Download data: JSON

Event type: Heat wave

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

  • Angola

Duration: 10 days

Time span: June 29 2026 to July 08 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 20.2 °C
  • Maximum temperature anomaly: 3.8 °C
  • Maximum temperature: 23.2 °C

Event center: -12.0°S 14.5°E

Area affected: 108663 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Jun-29_to_2026-Jul-08_14.5_-12.0

Heat wave occuring from June 28 2026 to July 03 2026 at -8.5°S 297.5°E

Download data: JSON

Event type: Heat wave

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

  • Bolivia
  • Brazil

Duration: 6 days

Time span: June 28 2026 to July 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.9 °C
  • Mean temperature: 27.3 °C
  • Maximum temperature anomaly: 2.8 °C
  • Maximum temperature: 29.0 °C

Event center: -8.5°S 297.5°E

Area affected: 316785 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Jun-28_to_2026-Jul-03_297.5_-8.5

Cold spell occuring from June 28 2026 to July 08 2026 at -38.0°S 289.0°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Chile
  • Uruguay

Duration: 11 days

Time span: June 28 2026 to July 08 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.2 °C
  • Mean temperature: 2.7 °C
  • Minimum temperature anomaly: -11.8 °C
  • Minimum temperature: -13.7 °C

Event center: -38.0°S 289.0°E

Area affected: 1281863 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Jun-28_to_2026-Jul-08_289.0_-38.0

Cold spell occuring from June 28 2026 to July 02 2026 at 29.5°N 97.0°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: June 28 2026 to July 02 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -3.1 °C
  • Mean temperature: 6.4 °C
  • Minimum temperature anomaly: -5.8 °C
  • Minimum temperature: -1.2 °C

Event center: 29.5°N 97.0°E

Area affected: 93358 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-Jun-28_to_2026-Jul-02_97.0_29.5

Cold spell occuring from June 28 2026 to July 06 2026 at 61.0°N 220.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 9 days

Time span: June 28 2026 to July 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.1 °C
  • Mean temperature: 8.4 °C
  • Minimum temperature anomaly: -10.7 °C
  • Minimum temperature: -2.7 °C

Event center: 61.0°N 220.5°E

Area affected: 474217 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-Jun-28_to_2026-Jul-06_220.5_61.0

Cold spell occuring from June 28 2026 to July 21 2026 at 0.0°N 4.0°E

Download data: JSON

Event type: Cold spell

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

  • Gabon

Duration: 24 days

Time span: June 28 2026 to July 21 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.3 °C
  • Mean temperature: 22.3 °C
  • Minimum temperature anomaly: -2.8 °C
  • Minimum temperature: 20.0 °C

Event center: 0.0°N 4.0°E

Area affected: 528306 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-Jun-28_to_2026-Jul-21_4.0_0.0

Cold spell occuring from June 28 2026 to July 04 2026 at 77.5°N 348.5°E

Download data: JSON

Event type: Cold spell

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

  • Greenland

Duration: 7 days

Time span: June 28 2026 to July 04 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.2 °C
  • Mean temperature: -0.7 °C
  • Minimum temperature anomaly: -2.4 °C
  • Minimum temperature: -1.6 °C

Event center: 77.5°N 348.5°E

Area affected: 51782 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-Jun-28_to_2026-Jul-04_348.5_77.5

Cold spell occuring from June 27 2026 to July 03 2026 at 33.0°N 244.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 7 days

Time span: June 27 2026 to July 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 24.5 °C
  • Minimum temperature anomaly: -9.3 °C
  • Minimum temperature: 7.6 °C

Event center: 33.0°N 244.0°E

Area affected: 467227 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Jun-27_to_2026-Jul-03_244.0_33.0