Category: Extremes affecting South Africa

Cold spell occuring from April 16 2011 to April 19 2011 at -25.5°S 26.5°E

Download data: JSON

Event type: Cold spell

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

  • South Africa

Duration: 4 days

Time span: April 16 2011 to April 19 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -3.0 °C
  • Mean temperature: 13.9 °C
  • Minimum temperature anomaly: -5.0 °C
  • Minimum temperature: 9.9 °C

Event center: -25.5°S 26.5°E

Area affected: 102004 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-Apr-16_to_2011-Apr-19_26.5_-25.5

Heat wave occuring from April 09 2011 to April 15 2011 at -34.5°S 24.0°E

Download data: JSON

Event type: Heat wave

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

  • South Africa

Duration: 7 days

Time span: April 09 2011 to April 15 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 21.0 °C
  • Maximum temperature anomaly: 4.6 °C
  • Maximum temperature: 24.3 °C

Event center: -34.5°S 24.0°E

Area affected: 138299 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-Apr-09_to_2011-Apr-15_24.0_-34.5

Heat wave occuring from April 08 2011 to April 10 2011 at -29.5°S 17.5°E

Download data: JSON

Event type: Heat wave

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

  • Namibia
  • South Africa

Duration: 3 days

Time span: April 08 2011 to April 10 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.0 °C
  • Mean temperature: 26.7 °C
  • Maximum temperature anomaly: 8.4 °C
  • Maximum temperature: 30.6 °C

Event center: -29.5°S 17.5°E

Area affected: 83507 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-Apr-08_to_2011-Apr-10_17.5_-29.5

Heat wave occuring from March 28 2011 to April 02 2011 at -30.5°S 30.5°E

Download data: JSON

Event type: Heat wave

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

  • Lesotho
  • South Africa

Duration: 6 days

Time span: March 28 2011 to April 02 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.0 °C
  • Mean temperature: 21.2 °C
  • Maximum temperature anomaly: 5.9 °C
  • Maximum temperature: 26.4 °C

Event center: -30.5°S 30.5°E

Area affected: 140530 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-Mar-28_to_2011-Apr-02_30.5_-30.5

Heat wave occuring from March 27 2011 to March 31 2011 at -28.5°S 20.5°E

Download data: JSON

Event type: Heat wave

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

  • Botswana
  • Namibia
  • South Africa

Duration: 5 days

Time span: March 27 2011 to March 31 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 27.0 °C
  • Maximum temperature anomaly: 8.1 °C
  • Maximum temperature: 30.6 °C

Event center: -28.5°S 20.5°E

Area affected: 281534 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-Mar-27_to_2011-Mar-31_20.5_-28.5

Heat wave occuring from March 18 2011 to March 31 2011 at -20.5°S 33.5°E

Download data: JSON

Event type: Heat wave

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

  • Botswana
  • Eswatini
  • Malawi
  • Mozambique
  • South Africa
  • Zimbabwe

Duration: 14 days

Time span: March 18 2011 to March 31 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 27.9 °C
  • Maximum temperature anomaly: 6.0 °C
  • Maximum temperature: 32.4 °C

Event center: -20.5°S 33.5°E

Area affected: 1295719 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-Mar-18_to_2011-Mar-31_33.5_-20.5

Heat wave occuring from March 09 2011 to March 18 2011 at -25.5°S 28.0°E

Download data: JSON

Event type: Heat wave

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

  • Eswatini
  • Mozambique
  • South Africa
  • Zimbabwe

Duration: 10 days

Time span: March 09 2011 to March 18 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.0 °C
  • Mean temperature: 26.5 °C
  • Maximum temperature anomaly: 6.0 °C
  • Maximum temperature: 32.0 °C

Event center: -25.5°S 28.0°E

Area affected: 336188 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-Mar-09_to_2011-Mar-18_28.0_-25.5

Cold spell occuring from January 31 2011 to February 06 2011 at -26.0°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
  • Zimbabwe

Duration: 7 days

Time span: January 31 2011 to February 06 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -3.2 °C
  • Mean temperature: 20.5 °C
  • Minimum temperature anomaly: -5.9 °C
  • Minimum temperature: 15.5 °C

Event center: -26.0°S 27.0°E

Area affected: 440880 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-Jan-31_to_2011-Feb-06_27.0_-26.0

Cold spell occuring from January 27 2011 to February 01 2011 at -17.0°S 27.0°E

Download data: JSON

Event type: Cold spell

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

  • Botswana
  • Mozambique
  • South Africa
  • Zambia
  • Zimbabwe

Duration: 6 days

Time span: January 27 2011 to February 01 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 21.1 °C
  • Minimum temperature anomaly: -4.3 °C
  • Minimum temperature: 16.8 °C

Event center: -17.0°S 27.0°E

Area affected: 397224 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-Jan-27_to_2011-Feb-01_27.0_-17.0

Cold spell occuring from January 05 2011 to January 09 2011 at -24.5°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
  • Zimbabwe

Duration: 5 days

Time span: January 05 2011 to January 09 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -4.6 °C
  • Mean temperature: 20.0 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: 15.8 °C

Event center: -24.5°S 27.0°E

Area affected: 435833 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-Jan-05_to_2011-Jan-09_27.0_-24.5