Author: WEXA

Heat wave occuring from May 17 2026 to May 22 2026 at 29.0°N 82.5°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Nepal

Duration: 6 days

Time span: May 17 2026 to May 22 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.6 °C
  • Mean temperature: 7.3 °C
  • Maximum temperature anomaly: 5.3 °C
  • Maximum temperature: 22.3 °C

Event center: 29.0°N 82.5°E

Area affected: 56373 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-17_to_2026-May-22_82.5_29.0

Cold spell occuring from May 17 2026 to May 22 2026 at 42.0°N 252.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 6 days

Time span: May 17 2026 to May 22 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -8.0 °C
  • Mean temperature: 2.1 °C
  • Minimum temperature anomaly: -16.3 °C
  • Minimum temperature: -7.5 °C

Event center: 42.0°N 252.5°E

Area affected: 366474 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-May-17_to_2026-May-22_252.5_42.0

Cold spell occuring from May 17 2026 to June 02 2026 at -17.0°S 123.5°E

Download data: JSON

Event type: Cold spell

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

  • Australia

Duration: 17 days

Time span: May 17 2026 to June 02 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: 17.7 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 9.0 °C

Event center: -17.0°S 123.5°E

Area affected: 2384698 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-May-17_to_2026-Jun-02_123.5_-17.0

Cold spell occuring from May 17 2026 to May 23 2026 at 29.5°N 49.0°E

Download data: JSON

Event type: Cold spell

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

  • Iran
  • Iraq

Duration: 7 days

Time span: May 17 2026 to May 23 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -2.3 °C
  • Mean temperature: 27.9 °C
  • Minimum temperature anomaly: -4.9 °C
  • Minimum temperature: 25.4 °C

Event center: 29.5°N 49.0°E

Area affected: 102673 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-May-17_to_2026-May-23_49.0_29.5

Heat wave occuring from May 16 2026 to May 23 2026 at 37.0°N 285.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 8 days

Time span: May 16 2026 to May 23 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 6.4 °C
  • Mean temperature: 22.6 °C
  • Maximum temperature anomaly: 12.2 °C
  • Maximum temperature: 29.8 °C

Event center: 37.0°N 285.5°E

Area affected: 999112 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-16_to_2026-May-23_285.5_37.0

Heat wave occuring from May 16 2026 to May 23 2026 at -55.0°S 291.5°E

Download data: JSON

Event type: Heat wave

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

  • Argentina
  • Chile

Duration: 8 days

Time span: May 16 2026 to May 23 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: 7.7 °C
  • Maximum temperature anomaly: 9.3 °C
  • Maximum temperature: 16.0 °C

Event center: -55.0°S 291.5°E

Area affected: 312758 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-16_to_2026-May-23_291.5_-55.0

Cold spell occuring from May 16 2026 to June 05 2026 at 58.5°N 200.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 21 days

Time span: May 16 2026 to June 05 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 3.9 °C
  • Minimum temperature anomaly: -6.6 °C
  • Minimum temperature: -7.6 °C

Event center: 58.5°N 200.0°E

Area affected: 1587232 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-May-16_to_2026-Jun-05_200.0_58.5

Cold spell occuring from May 15 2026 to May 20 2026 at 52.5°N 254.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 6 days

Time span: May 15 2026 to May 20 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -7.7 °C
  • Mean temperature: 2.9 °C
  • Minimum temperature anomaly: -11.8 °C
  • Minimum temperature: -1.5 °C

Event center: 52.5°N 254.0°E

Area affected: 487484 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-May-15_to_2026-May-20_254.0_52.5

Heat wave occuring from May 15 2026 to May 21 2026 at -19.5°S 315.0°E

Download data: JSON

Event type: Heat wave

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

  • Brazil

Duration: 7 days

Time span: May 15 2026 to May 21 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 23.3 °C
  • Maximum temperature anomaly: 2.8 °C
  • Maximum temperature: 25.9 °C

Event center: -19.5°S 315.0°E

Area affected: 58923 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-15_to_2026-May-21_315.0_-19.5

Heat wave occuring from May 15 2026 to May 21 2026 at 44.5°N 296.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 7 days

Time span: May 15 2026 to May 21 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 13.6 °C
  • Maximum temperature anomaly: 9.8 °C
  • Maximum temperature: 20.8 °C

Event center: 44.5°N 296.0°E

Area affected: 50441 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-15_to_2026-May-21_296.0_44.5