Category: Extremes affecting South Africa

Heat wave occuring from January 01 2012 to January 12 2012 at -23.5°S 18.5°E

Download data: JSON

Event type: Heat wave

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

  • Botswana
  • Namibia
  • South Africa

Duration: 12 days

Time span: January 01 2012 to January 12 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 4.6 °C
  • Mean temperature: 31.3 °C
  • Maximum temperature anomaly: 6.8 °C
  • Maximum temperature: 35.1 °C

Event center: -23.5°S 18.5°E

Area affected: 455991 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-Jan-01_to_2012-Jan-12_18.5_-23.5

Cold spell occuring from December 16 2011 to December 21 2011 at -23.5°S 33.5°E

Download data: JSON

Event type: Cold spell

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

  • Mozambique
  • South Africa
  • Zimbabwe

Duration: 6 days

Time span: December 16 2011 to December 21 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -3.8 °C
  • Mean temperature: 23.6 °C
  • Minimum temperature anomaly: -4.6 °C
  • Minimum temperature: 22.0 °C

Event center: -23.5°S 33.5°E

Area affected: 71529 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_2011-Dec-16_to_2011-Dec-21_33.5_-23.5

Cold spell occuring from December 09 2011 to December 11 2011 at -22.5°S 27.0°E

Download data: JSON

Event type: Cold spell

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

  • Botswana
  • South Africa

Duration: 3 days

Time span: December 09 2011 to December 11 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 20.1 °C
  • Minimum temperature anomaly: -6.1 °C
  • Minimum temperature: 17.2 °C

Event center: -22.5°S 27.0°E

Area affected: 82573 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_2011-Dec-09_to_2011-Dec-11_27.0_-22.5

Heat wave occuring from November 17 2011 to November 21 2011 at -19.5°S 29.0°E

Download data: JSON

Event type: Heat wave

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

  • Botswana
  • South Africa
  • Zimbabwe

Duration: 5 days

Time span: November 17 2011 to November 21 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 28.8 °C
  • Maximum temperature anomaly: 5.7 °C
  • Maximum temperature: 32.7 °C

Event center: -19.5°S 29.0°E

Area affected: 153232 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-Nov-17_to_2011-Nov-21_29.0_-19.5

Cold spell occuring from November 13 2011 to April 25 2012 at -21.0°S 333.0°E

Download data: JSON

Event type: Cold spell

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

  • Angola
  • Argentina
  • Benin
  • Brazil
  • Cameroon
  • Central African Republic
  • Congo
  • Congo DRC
  • Côte d’Ivoire
  • Gabon
  • Ghana
  • Liberia
  • Namibia
  • Nigeria
  • Paraguay
  • Sierra Leone
  • South Africa
  • South Sudan
  • Togo
  • Uganda

Duration: 165 days

Time span: November 13 2011 to April 25 2012

Statistics over entire affected area:

  • Mean temperature anomaly: -1.3 °C
  • Mean temperature: 22.4 °C
  • Minimum temperature anomaly: -11.9 °C
  • Minimum temperature: 7.5 °C

Event center: -21.0°S 333.0°E

Area affected: 29177637 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_2011-Nov-13_to_2012-Apr-25_333.0_-21.0

Heat wave occuring from November 08 2011 to November 22 2011 at -21.0°S 25.5°E

Download data: JSON

Event type: Heat wave

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

  • Botswana
  • Eswatini
  • Lesotho
  • Mozambique
  • Namibia
  • South Africa
  • Zambia
  • Zimbabwe

Duration: 15 days

Time span: November 08 2011 to November 22 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 4.3 °C
  • Mean temperature: 29.5 °C
  • Maximum temperature anomaly: 8.3 °C
  • Maximum temperature: 34.8 °C

Event center: -21.0°S 25.5°E

Area affected: 1191487 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-Nov-08_to_2011-Nov-22_25.5_-21.0

Heat wave occuring from October 20 2011 to November 04 2011 at -10.5°S 36.5°E

Download data: JSON

Event type: Heat wave

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

  • Angola
  • Botswana
  • Congo DRC
  • Kenya
  • Malawi
  • Mozambique
  • Namibia
  • South Africa
  • Tanzania
  • Zambia
  • Zimbabwe

Duration: 16 days

Time span: October 20 2011 to November 04 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.2 °C
  • Mean temperature: 28.7 °C
  • Maximum temperature anomaly: 8.6 °C
  • Maximum temperature: 36.5 °C

Event center: -10.5°S 36.5°E

Area affected: 2367975 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-Oct-20_to_2011-Nov-04_36.5_-10.5

Cold spell occuring from October 10 2011 to November 23 2011 at -5.5°S 319.5°E

Download data: JSON

Event type: Cold spell

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

  • Argentina
  • Botswana
  • Brazil
  • French Guiana
  • Guyana
  • Namibia
  • Paraguay
  • South Africa
  • Suriname
  • Venezuela

Duration: 45 days

Time span: October 10 2011 to November 23 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -2.5 °C
  • Mean temperature: 17.8 °C
  • Minimum temperature anomaly: -11.9 °C
  • Minimum temperature: -0.6 °C

Event center: -5.5°S 319.5°E

Area affected: 22633051 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_2011-Oct-10_to_2011-Nov-23_319.5_-5.5

Heat wave occuring from October 06 2011 to October 13 2011 at -28.5°S 18.5°E

Download data: JSON

Event type: Heat wave

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

  • Namibia
  • South Africa

Duration: 8 days

Time span: October 06 2011 to October 13 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 7.1 °C
  • Mean temperature: 25.0 °C
  • Maximum temperature anomaly: 10.8 °C
  • Maximum temperature: 28.7 °C

Event center: -28.5°S 18.5°E

Area affected: 197396 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-Oct-06_to_2011-Oct-13_18.5_-28.5

Cold spell occuring from September 28 2011 to October 15 2011 at -12.0°S 32.0°E

Download data: JSON

Event type: Cold spell

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

  • Angola
  • Botswana
  • Burundi
  • Congo DRC
  • Lesotho
  • Malawi
  • Mozambique
  • Namibia
  • Rwanda
  • South Africa
  • Tanzania
  • Zambia
  • Zimbabwe

Duration: 18 days

Time span: September 28 2011 to October 15 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -3.9 °C
  • Mean temperature: 20.1 °C
  • Minimum temperature anomaly: -9.0 °C
  • Minimum temperature: 4.0 °C

Event center: -12.0°S 32.0°E

Area affected: 3747016 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_2011-Sep-28_to_2011-Oct-15_32.0_-12.0