Category: Cold spells affecting Sierra Leone

(ongoing) Cold spell occuring from April 18 2026 to May 03 2026 at 9.0°N 345.0°E

Download data: JSON

Event type: Cold spell

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

  • Guinea
  • Sierra Leone

Duration: 16 days

Time span: April 18 2026 to May 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.8 °C
  • Mean temperature: 23.0 °C
  • Minimum temperature anomaly: -3.5 °C
  • Minimum temperature: 19.2 °C

Event center: 9.0°N 345.0°E

Area affected: 258491 km$^2$


Fig. 1: unavailable since event is ongoing.



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

Event ID: Cold_spell_2026-Apr-18_to_2026-May-03_345.0_9.0

Cold spell occuring from March 14 2026 to April 10 2026 at 7.0°N 348.0°E

Download data: JSON

Event type: Cold spell

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

  • Senegal
  • Sierra Leone

Duration: 28 days

Time span: March 14 2026 to April 10 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -1.6 °C
  • Mean temperature: 24.0 °C
  • Minimum temperature anomaly: -3.5 °C
  • Minimum temperature: 18.8 °C

Event center: 7.0°N 348.0°E

Area affected: 238055 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_2026-Mar-14_to_2026-Apr-10_348.0_7.0

Cold spell occuring from March 18 2023 to March 28 2023 at 10.5°N 346.5°E

Download data: JSON

Event type: Cold spell

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

  • Gambia
  • Guinea
  • Guinea-Bissau
  • Senegal
  • Sierra Leone

Duration: 11 days

Time span: March 18 2023 to March 28 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -1.9 °C
  • Mean temperature: 26.5 °C
  • Minimum temperature anomaly: -4.8 °C
  • Minimum temperature: 22.6 °C

Event center: 10.5°N 346.5°E

Area affected: 193414 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_2023-Mar-18_to_2023-Mar-28_346.5_10.5