Category: Extremes affecting Réunion

Heat wave occuring from July 29 2012 to August 15 2012 at -29.0°S 56.0°E

Download data: JSON

Event type: Heat wave

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

  • Madagascar
  • Mauritius
  • Réunion

Duration: 18 days

Time span: July 29 2012 to August 15 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 19.1 °C
  • Maximum temperature anomaly: 7.0 °C
  • Maximum temperature: 27.2 °C

Event center: -29.0°S 56.0°E

Area affected: 6965375 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_2012-Jul-29_to_2012-Aug-15_56.0_-29.0

Heat wave occuring from July 03 2012 to July 26 2012 at -29.5°S 57.0°E

Download data: JSON

Event type: Heat wave

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

  • French Southern Territories
  • Madagascar
  • Mauritius
  • Réunion

Duration: 24 days

Time span: July 03 2012 to July 26 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 14.7 °C
  • Maximum temperature anomaly: 7.3 °C
  • Maximum temperature: 25.6 °C

Event center: -29.5°S 57.0°E

Area affected: 8209877 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_2012-Jul-03_to_2012-Jul-26_57.0_-29.5

Cold spell occuring from January 13 2012 to February 06 2012 at -24.5°S 63.0°E

Download data: JSON

Event type: Cold spell

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

  • Madagascar
  • Malawi
  • Mauritius
  • Mozambique
  • Réunion
  • Zambia

Duration: 25 days

Time span: January 13 2012 to February 06 2012

Statistics over entire affected area:

  • Mean temperature anomaly: -2.0 °C
  • Mean temperature: 21.8 °C
  • Minimum temperature anomaly: -4.8 °C
  • Minimum temperature: 6.4 °C

Event center: -24.5°S 63.0°E

Area affected: 7814961 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_2012-Jan-13_to_2012-Feb-06_63.0_-24.5

Heat wave occuring from August 08 2011 to August 25 2011 at -17.0°S 48.5°E

Download data: JSON

Event type: Heat wave

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

  • Madagascar
  • Réunion

Duration: 18 days

Time span: August 08 2011 to August 25 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 1.4 °C
  • Mean temperature: 21.9 °C
  • Maximum temperature anomaly: 3.6 °C
  • Maximum temperature: 26.5 °C

Event center: -17.0°S 48.5°E

Area affected: 942332 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_2011-Aug-08_to_2011-Aug-25_48.5_-17.0

Heat wave occuring from May 24 2011 to July 14 2011 at -17.0°S 49.0°E

Download data: JSON

Event type: Heat wave

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

  • Angola
  • Congo DRC
  • Madagascar
  • Malawi
  • Mauritius
  • Mozambique
  • Réunion
  • Tanzania
  • Zambia
  • Zimbabwe

Duration: 52 days

Time span: May 24 2011 to July 14 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 19.4 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 29.7 °C

Event center: -17.0°S 49.0°E

Area affected: 13649734 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_2011-May-24_to_2011-Jul-14_49.0_-17.0

Heat wave occuring from July 07 2010 to August 03 2010 at -18.0°S 43.5°E

Download data: JSON

Event type: Heat wave

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

  • Madagascar
  • Mauritius
  • Mozambique
  • Réunion

Duration: 28 days

Time span: July 07 2010 to August 03 2010

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 20.7 °C
  • Maximum temperature anomaly: 3.8 °C
  • Maximum temperature: 27.1 °C

Event center: -18.0°S 43.5°E

Area affected: 7441174 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_2010-Jul-07_to_2010-Aug-03_43.5_-18.0

Heat wave occuring from June 04 2010 to July 05 2010 at -14.5°S 45.0°E

Download data: JSON

Event type: Heat wave

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

  • Kenya
  • Madagascar
  • Mauritius
  • Mozambique
  • Réunion
  • Tanzania

Duration: 32 days

Time span: June 04 2010 to July 05 2010

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 22.7 °C
  • Maximum temperature anomaly: 5.0 °C
  • Maximum temperature: 28.2 °C

Event center: -14.5°S 45.0°E

Area affected: 9349558 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_2010-Jun-04_to_2010-Jul-05_45.0_-14.5

Heat wave occuring from July 02 2026 to July 06 2026 at -21.5°S 57.0°E

Download data: JSON

Event type: Heat wave

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

  • Mauritius
  • Réunion

Duration: 5 days

Time span: July 02 2026 to July 06 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 24.1 °C
  • Maximum temperature anomaly: 2.3 °C
  • Maximum temperature: 25.4 °C

Event center: -21.5°S 57.0°E

Area affected: 1104612 km$^2$



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

Event ID: Heat_wave_2026-Jul-02_to_2026-Jul-06_57.0_-21.5

Heat wave occuring from June 06 2026 to June 19 2026 at -17.5°S 50.5°E

Download data: JSON

Event type: Heat wave

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

  • Madagascar
  • Mauritius
  • Réunion

Duration: 14 days

Time span: June 06 2026 to June 19 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.0 °C
  • Mean temperature: 21.2 °C
  • Maximum temperature anomaly: 6.6 °C
  • Maximum temperature: 27.1 °C

Event center: -17.5°S 50.5°E

Area affected: 4329227 km$^2$



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

Event ID: Heat_wave_2026-Jun-06_to_2026-Jun-19_50.5_-17.5