Category: Extremes affecting Algeria

Cold spell occuring from November 28 2021 to December 11 2021 at 28.5°N 12.5°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Libya
  • Tunisia

Duration: 14 days

Time span: November 28 2021 to December 11 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.8 °C
  • Mean temperature: 9.5 °C
  • Minimum temperature anomaly: -6.1 °C
  • Minimum temperature: 6.9 °C

Event center: 28.5°N 12.5°E

Area affected: 412763 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_2021-Nov-28_to_2021-Dec-11_12.5_28.5

Cold spell occuring from November 09 2021 to November 12 2021 at 20.0°N 1.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Mali

Duration: 4 days

Time span: November 09 2021 to November 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 20.3 °C
  • Minimum temperature anomaly: -5.3 °C
  • Minimum temperature: 18.6 °C

Event center: 20.5°N 359.5°E

Area affected: 144659 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_2021-Nov-09_to_2021-Nov-12_1.0_20.0

Cold spell occuring from November 03 2021 to November 17 2021 at 22.5°N 341.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • France
  • Mali
  • Mauritania
  • Morocco
  • Portugal
  • Spain
  • Tunisia

Duration: 15 days

Time span: November 03 2021 to November 17 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 12.8 °C
  • Minimum temperature anomaly: -8.0 °C
  • Minimum temperature: 0.9 °C

Event center: 22.5°N 341.0°E

Area affected: 2657614 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_2021-Nov-03_to_2021-Nov-17_341.0_22.5

Cold spell occuring from October 13 2021 to October 16 2021 at 36.5°N 10.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Tunisia

Duration: 4 days

Time span: October 13 2021 to October 16 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: 15.1 °C
  • Minimum temperature anomaly: -5.6 °C
  • Minimum temperature: 11.9 °C

Event center: 36.5°N 10.0°E

Area affected: 50045 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_2021-Oct-13_to_2021-Oct-16_10.0_36.5

Cold spell occuring from September 28 2021 to October 11 2021 at 20.5°N 32.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Chad
  • Egypt
  • Libya
  • Niger
  • Sudan

Duration: 14 days

Time span: September 28 2021 to October 11 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: 25.8 °C
  • Minimum temperature anomaly: -5.0 °C
  • Minimum temperature: 17.6 °C

Event center: 20.5°N 32.0°E

Area affected: 2737178 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_2021-Sep-28_to_2021-Oct-11_32.0_20.5

Cold spell occuring from September 24 2021 to October 03 2021 at 22.0°N 18.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Chad
  • Egypt
  • Libya
  • Niger

Duration: 10 days

Time span: September 24 2021 to October 03 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 24.5 °C
  • Minimum temperature anomaly: -5.6 °C
  • Minimum temperature: 18.5 °C

Event center: 22.0°N 18.0°E

Area affected: 1277640 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_2021-Sep-24_to_2021-Oct-03_18.0_22.0

Heat wave occuring from August 20 2021 to August 24 2021 at 34.0°N 0.0°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Morocco

Duration: 5 days

Time span: August 20 2021 to August 24 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.0 °C
  • Mean temperature: 33.1 °C
  • Maximum temperature anomaly: 4.7 °C
  • Maximum temperature: 37.7 °C

Event center: 34.0°N 359.0°E

Area affected: 132728 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_2021-Aug-20_to_2021-Aug-24_0.0_34.0

Heat wave occuring from August 19 2021 to August 21 2021 at 20.5°N 1.0°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Mali

Duration: 3 days

Time span: August 19 2021 to August 21 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.7 °C
  • Mean temperature: 36.9 °C
  • Maximum temperature anomaly: 4.0 °C
  • Maximum temperature: 38.3 °C

Event center: 20.5°N 1.0°E

Area affected: 75364 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_2021-Aug-19_to_2021-Aug-21_1.0_20.5

Heat wave occuring from July 21 2021 to July 25 2021 at 32.5°N 354.5°E

Download data: JSON

Event type: Heat wave

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

  • Algeria
  • Morocco

Duration: 5 days

Time span: July 21 2021 to July 25 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: 30.6 °C
  • Maximum temperature anomaly: 6.4 °C
  • Maximum temperature: 37.1 °C

Event center: 32.5°N 354.5°E

Area affected: 106583 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_2021-Jul-21_to_2021-Jul-25_354.5_32.5

Cold spell occuring from July 18 2021 to August 27 2021 at 37.0°N 351.0°E

Download data: JSON

Event type: Cold spell

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

  • Algeria
  • Andorra
  • Austria
  • Belgium
  • Czechia
  • France
  • Germany
  • Italy
  • Luxembourg
  • Mali
  • Mauritania
  • Morocco
  • Netherlands
  • Portugal
  • Spain
  • Switzerland

Duration: 41 days

Time span: July 18 2021 to August 27 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -2.9 °C
  • Mean temperature: 21.6 °C
  • Minimum temperature anomaly: -9.2 °C
  • Minimum temperature: 10.0 °C

Event center: 37.0°N 351.0°E

Area affected: 2492586 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_2021-Jul-18_to_2021-Aug-27_351.0_37.0