Cold spell occuring from December 26 2011 to January 02 2012 at 16.5°N 345.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Burkina Faso
  • Côte d’Ivoire
  • Guinea
  • Mali
  • Mauritania
  • Morocco
  • Niger
  • Senegal

Duration: 8 days

Time span: December 26 2011 to January 02 2012

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: 15.1 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: 4.5 °C

Event center: 16.5°N 345.0°E

Area affected: 2854943 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-26_to_2012-Jan-02_345.0_16.5

Cold spell occuring from December 21 2011 to December 23 2011 at 20.0°N 353.5°E

Download data: JSON

Event type: Cold spell

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

  • Mali
  • Mauritania

Duration: 3 days

Time span: December 21 2011 to December 23 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: 14.5 °C
  • Minimum temperature anomaly: -5.5 °C
  • Minimum temperature: 12.1 °C

Event center: 20.0°N 353.5°E

Area affected: 157329 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-21_to_2011-Dec-23_353.5_20.0

Cold spell occuring from December 13 2011 to December 18 2011 at 15.0°N 358.0°E

Download data: JSON

Event type: Cold spell

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

  • Burkina Faso
  • Mali
  • Mauritania

Duration: 6 days

Time span: December 13 2011 to December 18 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 20.4 °C
  • Minimum temperature anomaly: -3.4 °C
  • Minimum temperature: 18.3 °C

Event center: 15.0°N 358.0°E

Area affected: 127587 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-13_to_2011-Dec-18_358.0_15.0

Heat wave occuring from December 08 2011 to December 10 2011 at 25.5°N 352.5°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Mali
  • Mauritania

Duration: 3 days

Time span: December 08 2011 to December 10 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.3 °C
  • Mean temperature: 19.2 °C
  • Maximum temperature anomaly: 4.3 °C
  • Maximum temperature: 20.4 °C

Event center: 25.5°N 352.5°E

Area affected: 55808 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-Dec-08_to_2011-Dec-10_352.5_25.5

Heat wave occuring from November 16 2011 to November 20 2011 at 22.0°N 356.5°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Mali

Duration: 5 days

Time span: November 16 2011 to November 20 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.6 °C
  • Mean temperature: 25.1 °C
  • Maximum temperature anomaly: 4.3 °C
  • Maximum temperature: 26.9 °C

Event center: 22.0°N 356.5°E

Area affected: 62844 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-16_to_2011-Nov-20_356.5_22.0

Heat wave occuring from November 08 2011 to November 14 2011 at 14.0°N 348.5°E

Download data: JSON

Event type: Heat wave

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

  • Mali
  • Mauritania

Duration: 7 days

Time span: November 08 2011 to November 14 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 30.9 °C
  • Maximum temperature anomaly: 3.3 °C
  • Maximum temperature: 32.2 °C

Event center: 14.0°N 348.5°E

Area affected: 53993 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-14_348.5_14.0

Cold spell occuring from October 26 2011 to December 24 2011 at 37.5°N 45.0°E

Download data: JSON

Event type: Cold spell

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

  • Afghanistan
  • Albania
  • Armenia
  • Austria
  • Azerbaijan
  • Bahrain
  • Bosnia and Herzegovina
  • Bulgaria
  • Cameroon
  • Central African Republic
  • Chad
  • China
  • Congo
  • Congo DRC
  • Croatia
  • Cyprus
  • Czech Republic
  • Djibouti
  • Egypt
  • Eritrea
  • Ethiopia
  • Georgia
  • Greece
  • Hungary
  • Iran
  • Iraq
  • Israel
  • Italy
  • Jordan
  • Kazakhstan
  • Kuwait
  • Kyrgyzstan
  • Lebanon
  • Libya
  • Mali
  • Niger
  • Nigeria
  • North Macedonia
  • Oman
  • Pakistan
  • Palestinian Territory
  • Poland
  • Qatar
  • Romania
  • Russian Federation
  • Saudi Arabia
  • Serbia
  • Slovakia
  • Slovenia
  • Somalia
  • South Sudan
  • Sudan
  • Syria
  • Tajikistan
  • Turkiye
  • Turkmenistan
  • Ukraine
  • United Arab Emirates
  • Uzbekistan
  • Yemen

Duration: 60 days

Time span: October 26 2011 to December 24 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -5.4 °C
  • Mean temperature: 9.8 °C
  • Minimum temperature anomaly: -19.7 °C
  • Minimum temperature: -27.5 °C

Event center: 37.5°N 45.0°E

Area affected: 22191719 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-26_to_2011-Dec-24_45.0_37.5

Heat wave occuring from October 20 2011 to November 11 2011 at 13.5°N 350.5°E

Download data: JSON

Event type: Heat wave

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

  • Guinea
  • Mali
  • Mauritania
  • Senegal

Duration: 23 days

Time span: October 20 2011 to November 11 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 31.9 °C
  • Maximum temperature anomaly: 4.1 °C
  • Maximum temperature: 36.0 °C

Event center: 13.5°N 350.5°E

Area affected: 405834 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-11_350.5_13.5

Heat wave occuring from October 15 2011 to November 10 2011 at 12.5°N 358.0°E

Download data: JSON

Event type: Heat wave

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

  • Benin
  • Burkina Faso
  • Mali
  • Niger
  • Nigeria
  • Togo

Duration: 27 days

Time span: October 15 2011 to November 10 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 31.8 °C
  • Maximum temperature anomaly: 3.6 °C
  • Maximum temperature: 35.4 °C

Event center: 12.5°N 358.0°E

Area affected: 295054 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-15_to_2011-Nov-10_358.0_12.5

Heat wave occuring from October 02 2011 to October 13 2011 at 13.5°N 350.0°E

Download data: JSON

Event type: Heat wave

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

  • Burkina Faso
  • Côte d’Ivoire
  • Gambia
  • Guinea
  • Guinea-Bissau
  • Liberia
  • Mali
  • Mauritania
  • Senegal
  • Sierra Leone

Duration: 12 days

Time span: October 02 2011 to October 13 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 28.6 °C
  • Maximum temperature anomaly: 4.0 °C
  • Maximum temperature: 34.4 °C

Event center: 13.5°N 350.0°E

Area affected: 824269 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-02_to_2011-Oct-13_350.0_13.5