Category: Extremes affecting Canada

Heat wave occuring from December 08 2023 to December 10 2023 at 43.5°N 278.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 3 days

Time span: December 08 2023 to December 10 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 7.5 °C
  • Mean temperature: 6.8 °C
  • Maximum temperature anomaly: 13.3 °C
  • Maximum temperature: 11.9 °C

Event center: 43.5°N 278.5°E

Area affected: 76358 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_2023-Dec-08_to_2023-Dec-10_278.5_43.5

Cold spell occuring from November 22 2023 to November 28 2023 at 88.5°N 258.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 7 days

Time span: November 22 2023 to November 28 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -7.6 °C
  • Mean temperature: -29.2 °C
  • Minimum temperature anomaly: -10.0 °C
  • Minimum temperature: -32.7 °C

Event center: 88.5°N 258.0°E

Area affected: 469867 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-Nov-22_to_2023-Nov-28_258.0_88.5

Cold spell occuring from November 21 2023 to November 29 2023 at 81.5°N 272.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 9 days

Time span: November 21 2023 to November 29 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -8.9 °C
  • Mean temperature: -35.1 °C
  • Minimum temperature anomaly: -17.4 °C
  • Minimum temperature: -45.2 °C

Event center: 81.5°N 272.5°E

Area affected: 98483 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-Nov-21_to_2023-Nov-29_272.5_81.5

Heat wave occuring from November 17 2023 to November 19 2023 at 58.0°N 234.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 3 days

Time span: November 17 2023 to November 19 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 9.0 °C
  • Mean temperature: -1.1 °C
  • Maximum temperature anomaly: 13.1 °C
  • Maximum temperature: 5.8 °C

Event center: 58.0°N 234.5°E

Area affected: 412804 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_2023-Nov-17_to_2023-Nov-19_234.5_58.0

Heat wave occuring from November 17 2023 to November 20 2023 at 53.5°N 252.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 4 days

Time span: November 17 2023 to November 20 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.3 °C
  • Mean temperature: 2.0 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 4.3 °C

Event center: 53.5°N 252.5°E

Area affected: 184736 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_2023-Nov-17_to_2023-Nov-20_252.5_53.5

Heat wave occuring from November 16 2023 to November 20 2023 at 82.0°N 320.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 5 days

Time span: November 16 2023 to November 20 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.8 °C
  • Mean temperature: -17.0 °C
  • Maximum temperature anomaly: 15.0 °C
  • Maximum temperature: -10.2 °C

Event center: 82.0°N 320.0°E

Area affected: 145557 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_2023-Nov-16_to_2023-Nov-20_320.0_82.0

Heat wave occuring from November 13 2023 to November 16 2023 at 46.5°N 268.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 4 days

Time span: November 13 2023 to November 16 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.9 °C
  • Mean temperature: 9.8 °C
  • Maximum temperature anomaly: 12.5 °C
  • Maximum temperature: 13.7 °C

Event center: 46.5°N 268.0°E

Area affected: 220900 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_2023-Nov-13_to_2023-Nov-16_268.0_46.5

Cold spell occuring from November 12 2023 to November 16 2023 at 48.5°N 306.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 5 days

Time span: November 12 2023 to November 16 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.6 °C
  • Mean temperature: 2.1 °C
  • Minimum temperature anomaly: -5.5 °C
  • Minimum temperature: -3.2 °C

Event center: 48.5°N 306.5°E

Area affected: 80496 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-Nov-12_to_2023-Nov-16_306.5_48.5

Heat wave occuring from November 10 2023 to November 25 2023 at 68.0°N 251.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 16 days

Time span: November 10 2023 to November 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.6 °C
  • Mean temperature: -11.3 °C
  • Maximum temperature anomaly: 14.6 °C
  • Maximum temperature: -1.7 °C

Event center: 68.0°N 251.5°E

Area affected: 997266 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_2023-Nov-10_to_2023-Nov-25_251.5_68.0

Heat wave occuring from November 08 2023 to November 26 2023 at 69.0°N 274.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 19 days

Time span: November 08 2023 to November 26 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 9.7 °C
  • Mean temperature: -5.8 °C
  • Maximum temperature anomaly: 22.4 °C
  • Maximum temperature: 3.0 °C

Event center: 69.0°N 274.0°E

Area affected: 3528612 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_2023-Nov-08_to_2023-Nov-26_274.0_69.0