Category: Weather Extremes – all events

Heat wave occuring from May 05 2026 to May 21 2026 at -9.5°S 160.0°E

Download data: JSON

Event type: Heat wave

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

  • Solomon Islands

Duration: 17 days

Time span: May 05 2026 to May 21 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 27.7 °C
  • Maximum temperature anomaly: 1.7 °C
  • Maximum temperature: 28.9 °C

Event center: -9.5°S 160.0°E

Area affected: 76224 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-May-05_to_2026-May-21_160.0_-9.5

Heat wave occuring from April 24 2026 to May 30 2026 at -23.0°S 333.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • Argentina
  • Brazil
  • Paraguay
  • South Georgia and the South Sandwich Islands
  • Uruguay

Duration: 37 days

Time span: April 24 2026 to May 30 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 7.6 °C
  • Maximum temperature anomaly: 23.3 °C
  • Maximum temperature: 27.5 °C

Event center: -23.0°S 333.0°E

Area affected: 18900105 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-Apr-24_to_2026-May-30_333.0_-23.0

Cold spell occuring from April 20 2026 to May 25 2026 at -31.0°S 288.0°E

Download data: JSON

Event type: Cold spell

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

  • Chile

Duration: 36 days

Time span: April 20 2026 to May 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.7 °C
  • Mean temperature: 13.7 °C
  • Minimum temperature anomaly: -5.8 °C
  • Minimum temperature: 4.6 °C

Event center: -31.0°S 288.0°E

Area affected: 550658 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-Apr-20_to_2026-May-25_288.0_-31.0

Cold spell occuring from April 15 2026 to May 28 2026 at -17.0°S 11.5°E

Download data: JSON

Event type: Cold spell

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

  • Angola
  • Botswana
  • Lesotho
  • Namibia
  • South Africa
  • Zambia

Duration: 44 days

Time span: April 15 2026 to May 28 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 15.7 °C
  • Minimum temperature anomaly: -10.8 °C
  • Minimum temperature: 0.2 °C

Event center: -17.0°S 11.5°E

Area affected: 2931247 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-Apr-15_to_2026-May-28_11.5_-17.0

Cold spell occuring from June 30 2026 to July 14 2026 at 51.5°N 180.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 15 days

Time span: June 30 2026 to July 14 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.6 °C
  • Mean temperature: 6.3 °C
  • Minimum temperature anomaly: -3.6 °C
  • Minimum temperature: 4.8 °C

Event center: 51.5°N 180.0°E

Area affected: 818150 km$^2$



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

Event ID: Cold_spell_2026-Jun-30_to_2026-Jul-14_180.0_51.5

Heat wave occuring from June 30 2026 to July 07 2026 at -9.5°S 34.5°E

Download data: JSON

Event type: Heat wave

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

  • Malawi
  • Tanzania
  • Zambia

Duration: 8 days

Time span: June 30 2026 to July 07 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 18.4 °C
  • Maximum temperature anomaly: 2.4 °C
  • Maximum temperature: 22.4 °C

Event center: -9.5°S 34.5°E

Area affected: 54806 km$^2$



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

Event ID: Heat_wave_2026-Jun-30_to_2026-Jul-07_34.5_-9.5

Heat wave occuring from June 30 2026 to July 06 2026 at -20.5°S 293.0°E

Download data: JSON

Event type: Heat wave

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

  • Argentina
  • Bolivia

Duration: 7 days

Time span: June 30 2026 to July 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.8 °C
  • Mean temperature: 6.5 °C
  • Maximum temperature anomaly: 4.9 °C
  • Maximum temperature: 15.0 °C

Event center: -20.5°S 293.0°E

Area affected: 66249 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-30_to_2026-Jul-06_293.0_-20.5

Cold spell occuring from June 29 2026 to July 09 2026 at 36.5°N 69.0°E

Download data: JSON

Event type: Cold spell

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

  • Afghanistan
  • Tajikistan
  • Turkmenistan

Duration: 11 days

Time span: June 29 2026 to July 09 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -3.4 °C
  • Mean temperature: 24.4 °C
  • Minimum temperature anomaly: -5.8 °C
  • Minimum temperature: 15.4 °C

Event center: 36.5°N 69.0°E

Area affected: 71959 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-29_to_2026-Jul-09_69.0_36.5

Cold spell occuring from June 29 2026 to July 04 2026 at 26.0°N 102.0°E

Download data: JSON

Event type: Cold spell

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

  • China

Duration: 6 days

Time span: June 29 2026 to July 04 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -2.4 °C
  • Mean temperature: 19.4 °C
  • Minimum temperature anomaly: -4.3 °C
  • Minimum temperature: 15.8 °C

Event center: 26.0°N 102.0°E

Area affected: 64331 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-29_to_2026-Jul-04_102.0_26.0

Cold spell occuring from June 29 2026 to July 13 2026 at -66.5°S 242.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 15 days

Time span: June 29 2026 to July 13 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -12.0 °C
  • Mean temperature: -29.7 °C
  • Minimum temperature anomaly: -23.3 °C
  • Minimum temperature: -54.7 °C

Event center: -66.5°S 242.0°E

Area affected: 3318621 km$^2$



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

Event ID: Cold_spell_2026-Jun-29_to_2026-Jul-13_242.0_-66.5