Author: WEXA

Heat wave occuring from April 21 2026 to April 25 2026 at -74.0°S 30.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica

Duration: 5 days

Time span: April 21 2026 to April 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 7.7 °C
  • Mean temperature: -36.5 °C
  • Maximum temperature anomaly: 11.3 °C
  • Maximum temperature: -12.5 °C

Event center: -74.0°S 30.5°E

Area affected: 192250 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-21_to_2026-Apr-25_30.5_-74.0

Heat wave occuring from April 21 2026 to April 25 2026 at 19.5°N 352.0°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Mali
  • Mauritania

Duration: 5 days

Time span: April 21 2026 to April 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 4.0 °C
  • Mean temperature: 33.3 °C
  • Maximum temperature anomaly: 5.5 °C
  • Maximum temperature: 37.5 °C

Event center: 19.5°N 352.0°E

Area affected: 286858 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-21_to_2026-Apr-25_352.0_19.5

Cold spell occuring from April 20 2026 to April 25 2026 at -77.5°S 203.5°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica

Duration: 6 days

Time span: April 20 2026 to April 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -10.9 °C
  • Mean temperature: -27.3 °C
  • Minimum temperature anomaly: -15.8 °C
  • Minimum temperature: -38.0 °C

Event center: -77.5°S 203.5°E

Area affected: 253679 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-Apr-25_203.5_-77.5

Cold spell occuring from April 20 2026 to April 25 2026 at 27.0°N 44.0°E

Download data: JSON

Event type: Cold spell

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

  • Saudi Arabia

Duration: 6 days

Time span: April 20 2026 to April 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.3 °C
  • Mean temperature: 21.8 °C
  • Minimum temperature anomaly: -8.8 °C
  • Minimum temperature: 18.1 °C

Event center: 27.0°N 44.0°E

Area affected: 157103 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-Apr-25_44.0_27.0

Cold spell occuring from April 20 2026 to April 30 2026 at 57.0°N 163.0°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation

Duration: 11 days

Time span: April 20 2026 to April 30 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: -3.8 °C
  • Minimum temperature anomaly: -10.5 °C
  • Minimum temperature: -19.4 °C

Event center: 57.0°N 163.0°E

Area affected: 1008553 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-Apr-30_163.0_57.0

Cold spell occuring from April 20 2026 to April 24 2026 at 50.0°N 36.5°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation
  • Ukraine

Duration: 5 days

Time span: April 20 2026 to April 24 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -6.0 °C
  • Mean temperature: 4.3 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 1.3 °C

Event center: 50.0°N 36.5°E

Area affected: 164220 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-Apr-24_36.5_50.0

Heat wave occuring from April 20 2026 to April 23 2026 at 34.5°N 10.0°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Tunisia

Duration: 4 days

Time span: April 20 2026 to April 23 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 24.0 °C
  • Maximum temperature anomaly: 7.8 °C
  • Maximum temperature: 28.3 °C

Event center: 34.5°N 10.0°E

Area affected: 76554 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-20_to_2026-Apr-23_10.0_34.5

Heat wave occuring from April 20 2026 to April 25 2026 at 24.5°N 94.5°E

Download data: JSON

Event type: Heat wave

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

  • Bangladesh
  • India
  • Myanmar

Duration: 6 days

Time span: April 20 2026 to April 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.0 °C
  • Mean temperature: 27.9 °C
  • Maximum temperature anomaly: 4.8 °C
  • Maximum temperature: 33.3 °C

Event center: 24.5°N 94.5°E

Area affected: 67686 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-20_to_2026-Apr-25_94.5_24.5

Heat wave occuring from April 20 2026 to April 25 2026 at 7.5°N 12.0°E

Download data: JSON

Event type: Heat wave

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

  • Cameroon
  • Nigeria

Duration: 6 days

Time span: April 20 2026 to April 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 30.1 °C
  • Maximum temperature anomaly: 3.7 °C
  • Maximum temperature: 34.6 °C

Event center: 7.5°N 12.0°E

Area affected: 214493 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-20_to_2026-Apr-25_12.0_7.5

Cold spell occuring from April 20 2026 to April 26 2026 at 39.0°N 295.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 7 days

Time span: April 20 2026 to April 26 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: -0.4 °C
  • Minimum temperature anomaly: -10.0 °C
  • Minimum temperature: -11.6 °C

Event center: 39.0°N 295.0°E

Area affected: 767580 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-Apr-26_295.0_39.0