Category: Extremes affecting Canada

Cold spell occuring from January 02 2021 to January 06 2021 at 74.0°N 260.0°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: January 02 2021 to January 06 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -8.9 °C
  • Mean temperature: -37.5 °C
  • Minimum temperature anomaly: -16.6 °C
  • Minimum temperature: -48.3 °C

Event center: 74.0°N 260.0°E

Area affected: 498954 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-Jan-02_to_2021-Jan-06_260.0_74.0

Heat wave occuring from December 31 2020 to January 03 2021 at 47.0°N 246.0°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: December 31 2020 to January 03 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.3 °C
  • Mean temperature: 0.4 °C
  • Maximum temperature anomaly: 10.6 °C
  • Maximum temperature: 3.6 °C

Event center: 47.0°N 246.0°E

Area affected: 68067 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_2020-Dec-31_to_2021-Jan-03_246.0_47.0

Heat wave occuring from December 29 2020 to January 05 2021 at 81.0°N 286.5°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: December 29 2020 to January 05 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 8.0 °C
  • Mean temperature: -22.1 °C
  • Maximum temperature anomaly: 13.9 °C
  • Maximum temperature: -13.2 °C

Event center: 81.0°N 286.5°E

Area affected: 52382 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_2020-Dec-29_to_2021-Jan-05_286.5_81.0

Heat wave occuring from December 27 2020 to January 04 2021 at 79.5°N 281.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 9 days

Time span: December 27 2020 to January 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 9.9 °C
  • Mean temperature: -16.2 °C
  • Maximum temperature anomaly: 21.2 °C
  • Maximum temperature: 0.2 °C

Event center: 79.5°N 281.5°E

Area affected: 815230 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_2020-Dec-27_to_2021-Jan-04_281.5_79.5

Heat wave occuring from December 25 2020 to December 27 2020 at 53.0°N 297.0°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: December 25 2020 to December 27 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 11.2 °C
  • Mean temperature: 3.7 °C
  • Maximum temperature anomaly: 23.5 °C
  • Maximum temperature: 14.5 °C

Event center: 53.0°N 297.0°E

Area affected: 726888 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_2020-Dec-25_to_2020-Dec-27_297.0_53.0

Cold spell occuring from December 22 2020 to December 28 2020 at 73.5°N 256.0°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: December 22 2020 to December 28 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -6.8 °C
  • Mean temperature: -34.6 °C
  • Minimum temperature anomaly: -12.9 °C
  • Minimum temperature: -44.1 °C

Event center: 73.5°N 256.0°E

Area affected: 196803 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_2020-Dec-22_to_2020-Dec-28_256.0_73.5

Heat wave occuring from December 18 2020 to December 23 2020 at 46.5°N 243.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 6 days

Time span: December 18 2020 to December 23 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 8.4 °C
  • Mean temperature: 4.1 °C
  • Maximum temperature anomaly: 13.1 °C
  • Maximum temperature: 12.9 °C

Event center: 46.5°N 243.0°E

Area affected: 1239083 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_2020-Dec-18_to_2020-Dec-23_243.0_46.5

Cold spell occuring from December 15 2020 to December 29 2020 at 85.0°N 286.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Greenland

Duration: 15 days

Time span: December 15 2020 to December 29 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -7.3 °C
  • Mean temperature: -31.4 °C
  • Minimum temperature anomaly: -11.1 °C
  • Minimum temperature: -37.4 °C

Event center: 85.0°N 286.0°E

Area affected: 509113 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_2020-Dec-15_to_2020-Dec-29_286.0_85.0

Heat wave occuring from December 14 2020 to February 18 2021 at 74.5°N 275.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Denmark
  • Estonia
  • Finland
  • France
  • Germany
  • Greenland
  • Latvia
  • Lithuania
  • Norway
  • Poland
  • Russian Federation
  • Svalbard and Jan Mayen
  • Sweden
  • United Kingdom
  • United States

Duration: 67 days

Time span: December 14 2020 to February 18 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 11.6 °C
  • Mean temperature: -9.6 °C
  • Maximum temperature anomaly: 30.8 °C
  • Maximum temperature: 20.2 °C

Event center: 74.5°N 275.5°E

Area affected: 27193366 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_2020-Dec-14_to_2021-Feb-18_275.5_74.5

Cold spell occuring from December 12 2020 to December 23 2020 at 64.0°N 236.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 12 days

Time span: December 12 2020 to December 23 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -12.8 °C
  • Mean temperature: -37.9 °C
  • Minimum temperature anomaly: -24.4 °C
  • Minimum temperature: -50.2 °C

Event center: 64.0°N 236.0°E

Area affected: 1612260 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_2020-Dec-12_to_2020-Dec-23_236.0_64.0