Category: Extremes affecting Canada

Heat wave occuring from November 30 2021 to December 13 2021 at 75.5°N 290.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 14 days

Time span: November 30 2021 to December 13 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 9.1 °C
  • Mean temperature: -13.4 °C
  • Maximum temperature anomaly: 16.4 °C
  • Maximum temperature: 2.6 °C

Event center: 75.5°N 290.0°E

Area affected: 1011241 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-Nov-30_to_2021-Dec-13_290.0_75.5

Heat wave occuring from November 23 2021 to November 27 2021 at 67.0°N 279.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 5 days

Time span: November 23 2021 to November 27 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 11.7 °C
  • Mean temperature: -7.5 °C
  • Maximum temperature anomaly: 17.5 °C
  • Maximum temperature: -2.7 °C

Event center: 67.0°N 279.5°E

Area affected: 238000 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-Nov-23_to_2021-Nov-27_279.5_67.0

Heat wave occuring from November 22 2021 to December 06 2021 at 51.0°N 302.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 15 days

Time span: November 22 2021 to December 06 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 5.5 °C
  • Mean temperature: 9.2 °C
  • Maximum temperature anomaly: 20.2 °C
  • Maximum temperature: 23.3 °C

Event center: 51.0°N 302.5°E

Area affected: 5647039 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-Nov-22_to_2021-Dec-06_302.5_51.0

Cold spell occuring from November 21 2021 to November 25 2021 at 66.0°N 232.5°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 21 2021 to November 25 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -11.8 °C
  • Mean temperature: -32.4 °C
  • Minimum temperature anomaly: -16.6 °C
  • Minimum temperature: -37.1 °C

Event center: 66.0°N 232.5°E

Area affected: 115761 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-21_to_2021-Nov-25_232.5_66.0

Heat wave occuring from November 19 2021 to December 11 2021 at 39.0°N 254.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Mexico
  • United States

Duration: 23 days

Time span: November 19 2021 to December 11 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.1 °C
  • Mean temperature: 9.8 °C
  • Maximum temperature anomaly: 19.6 °C
  • Maximum temperature: 28.3 °C

Event center: 39.0°N 254.0°E

Area affected: 4531351 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-Nov-19_to_2021-Dec-11_254.0_39.0

Heat wave occuring from November 05 2021 to November 15 2021 at 79.5°N 259.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 11 days

Time span: November 05 2021 to November 15 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 6.3 °C
  • Mean temperature: -14.6 °C
  • Maximum temperature anomaly: 10.9 °C
  • Maximum temperature: -9.0 °C

Event center: 79.5°N 259.0°E

Area affected: 685613 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-Nov-05_to_2021-Nov-15_259.0_79.5

Heat wave occuring from November 05 2021 to November 09 2021 at 82.5°N 299.0°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 05 2021 to November 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 8.7 °C
  • Mean temperature: -15.7 °C
  • Maximum temperature anomaly: 17.7 °C
  • Maximum temperature: -8.0 °C

Event center: 82.5°N 299.0°E

Area affected: 58916 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-Nov-05_to_2021-Nov-09_299.0_82.5

Heat wave occuring from November 01 2021 to November 08 2021 at 62.5°N 234.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 8 days

Time span: November 01 2021 to November 08 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.6 °C
  • Mean temperature: -5.0 °C
  • Maximum temperature anomaly: 11.5 °C
  • Maximum temperature: -0.0 °C

Event center: 62.5°N 234.5°E

Area affected: 126477 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-Nov-01_to_2021-Nov-08_234.5_62.5

Heat wave occuring from October 31 2021 to November 04 2021 at 62.0°N 212.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 5 days

Time span: October 31 2021 to November 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.9 °C
  • Mean temperature: -2.1 °C
  • Maximum temperature anomaly: 12.7 °C
  • Maximum temperature: 8.1 °C

Event center: 62.0°N 212.5°E

Area affected: 164611 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-Oct-31_to_2021-Nov-04_212.5_62.0

Heat wave occuring from October 29 2021 to November 03 2021 at 49.0°N 296.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 6 days

Time span: October 29 2021 to November 03 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 9.4 °C
  • Maximum temperature anomaly: 6.4 °C
  • Maximum temperature: 11.9 °C

Event center: 49.0°N 296.5°E

Area affected: 120951 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-Oct-29_to_2021-Nov-03_296.5_49.0