Cold spell occuring from April 28 2025 to May 07 2025 at 12.0°N 349.0°E

Download data: JSON

Event type: Cold spell

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

  • Guinea
  • Mali
  • Senegal

Duration: 10 days

Time span: April 28 2025 to May 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: 27.7 °C
  • Minimum temperature anomaly: -6.1 °C
  • Minimum temperature: 22.0 °C

Event center: 12.0°N 349.0°E

Area affected: 133156 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_2025-Apr-28_to_2025-May-07_349.0_12.0

Cold spell occuring from March 02 2025 to March 24 2025 at 9.0°N 343.5°E

Download data: JSON

Event type: Cold spell

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

  • Gambia
  • Mauritania
  • Senegal

Duration: 23 days

Time span: March 02 2025 to March 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.1 °C
  • Mean temperature: 22.8 °C
  • Minimum temperature anomaly: -5.4 °C
  • Minimum temperature: 17.0 °C

Event center: 9.0°N 343.5°E

Area affected: 563751 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_2025-Mar-02_to_2025-Mar-24_343.5_9.0

Cold spell occuring from February 23 2025 to February 28 2025 at 15.0°N 346.5°E

Download data: JSON

Event type: Cold spell

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

  • Burkina Faso
  • Côte d’Ivoire
  • Ghana
  • Guinea
  • Mali
  • Mauritania
  • Senegal

Duration: 6 days

Time span: February 23 2025 to February 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.5 °C
  • Mean temperature: 25.9 °C
  • Minimum temperature anomaly: -5.3 °C
  • Minimum temperature: 22.8 °C

Event center: 15.0°N 346.5°E

Area affected: 421266 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_2025-Feb-23_to_2025-Feb-28_346.5_15.0

Cold spell occuring from February 01 2025 to February 08 2025 at 15.0°N 345.0°E

Download data: JSON

Event type: Cold spell

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

  • Gambia
  • Guinea
  • Guinea-Bissau
  • Mali
  • Mauritania
  • Senegal

Duration: 8 days

Time span: February 01 2025 to February 08 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 21.3 °C
  • Minimum temperature anomaly: -6.3 °C
  • Minimum temperature: 14.5 °C

Event center: 15.0°N 345.0°E

Area affected: 618965 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_2025-Feb-01_to_2025-Feb-08_345.0_15.0

Cold spell occuring from January 15 2025 to January 21 2025 at 15.0°N 345.0°E

Download data: JSON

Event type: Cold spell

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

  • Mali
  • Mauritania
  • Senegal

Duration: 7 days

Time span: January 15 2025 to January 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 20.9 °C
  • Minimum temperature anomaly: -5.1 °C
  • Minimum temperature: 18.9 °C

Event center: 15.0°N 345.0°E

Area affected: 53735 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_2025-Jan-15_to_2025-Jan-21_345.0_15.0

Cold spell occuring from January 02 2025 to January 07 2025 at 15.0°N 345.0°E

Download data: JSON

Event type: Cold spell

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

  • Mali
  • Mauritania
  • Senegal

Duration: 6 days

Time span: January 02 2025 to January 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.9 °C
  • Mean temperature: 21.5 °C
  • Minimum temperature anomaly: -3.9 °C
  • Minimum temperature: 19.9 °C

Event center: 15.0°N 345.0°E

Area affected: 56740 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_2025-Jan-02_to_2025-Jan-07_345.0_15.0

Cold spell occuring from December 19 2024 to December 25 2024 at 14.5°N 344.0°E

Download data: JSON

Event type: Cold spell

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

  • Gambia
  • Guinea-Bissau
  • Mali
  • Senegal

Duration: 7 days

Time span: December 19 2024 to December 25 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 23.1 °C
  • Minimum temperature anomaly: -5.5 °C
  • Minimum temperature: 19.2 °C

Event center: 14.5°N 344.0°E

Area affected: 104827 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_2024-Dec-19_to_2024-Dec-25_344.0_14.5

Cold spell occuring from October 22 2024 to October 25 2024 at 15.5°N 347.0°E

Download data: JSON

Event type: Cold spell

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

  • Mali
  • Mauritania
  • Senegal

Duration: 4 days

Time span: October 22 2024 to October 25 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.6 °C
  • Mean temperature: 28.1 °C
  • Minimum temperature anomaly: -4.2 °C
  • Minimum temperature: 26.3 °C

Event center: 15.5°N 347.0°E

Area affected: 53686 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_2024-Oct-22_to_2024-Oct-25_347.0_15.5

Cold spell occuring from August 20 2024 to October 04 2024 at 32.5°N 350.5°E

Download data: JSON

Event type: Cold spell

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

  • Gambia
  • Guinea
  • Mali
  • Mauritania
  • Morocco
  • Portugal
  • Senegal
  • Spain

Duration: 46 days

Time span: August 20 2024 to October 04 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.6 °C
  • Mean temperature: 22.9 °C
  • Minimum temperature anomaly: -9.2 °C
  • Minimum temperature: 7.3 °C

Event center: 32.5°N 350.5°E

Area affected: 1762984 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_2024-Aug-20_to_2024-Oct-04_350.5_32.5

Cold spell occuring from June 17 2024 to June 20 2024 at 15.0°N 347.0°E

Download data: JSON

Event type: Cold spell

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

  • Mauritania
  • Senegal

Duration: 4 days

Time span: June 17 2024 to June 20 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.4 °C
  • Mean temperature: 31.5 °C
  • Minimum temperature anomaly: -4.0 °C
  • Minimum temperature: 28.5 °C

Event center: 15.0°N 347.0°E

Area affected: 50640 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_2024-Jun-17_to_2024-Jun-20_347.0_15.0