Category: Cold spells affecting Canada

Cold spell occuring from October 06 2021 to October 09 2021 at 47.0°N 237.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 4 days

Time span: October 06 2021 to October 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.5 °C
  • Mean temperature: 6.0 °C
  • Minimum temperature anomaly: -5.2 °C
  • Minimum temperature: 0.3 °C

Event center: 47.0°N 237.0°E

Area affected: 55496 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-06_to_2021-Oct-09_237.0_47.0

Cold spell occuring from October 04 2021 to December 16 2021 at 58.5°N 202.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • China
  • Greenland
  • Japan
  • Russian Federation
  • United States

Duration: 74 days

Time span: October 04 2021 to December 16 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -7.7 °C
  • Mean temperature: -20.2 °C
  • Minimum temperature anomaly: -26.2 °C
  • Minimum temperature: -49.4 °C

Event center: 58.5°N 202.5°E

Area affected: 18095107 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-04_to_2021-Dec-16_202.5_58.5

Cold spell occuring from October 04 2021 to November 04 2021 at 23.5°N 218.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 32 days

Time span: October 04 2021 to November 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: 20.2 °C
  • Minimum temperature anomaly: -9.8 °C
  • Minimum temperature: -10.4 °C

Event center: 23.5°N 218.0°E

Area affected: 3616679 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-04_to_2021-Nov-04_218.0_23.5

Cold spell occuring from September 21 2021 to October 12 2021 at 56.5°N 206.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 22 days

Time span: September 21 2021 to October 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: 6.3 °C
  • Minimum temperature anomaly: -15.2 °C
  • Minimum temperature: -19.9 °C

Event center: 56.5°N 206.0°E

Area affected: 3952034 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-21_to_2021-Oct-12_206.0_56.5

Cold spell occuring from September 20 2021 to October 01 2021 at 65.5°N 222.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 12 days

Time span: September 20 2021 to October 01 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -6.4 °C
  • Mean temperature: -4.8 °C
  • Minimum temperature anomaly: -16.5 °C
  • Minimum temperature: -18.5 °C

Event center: 65.5°N 222.0°E

Area affected: 351902 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-20_to_2021-Oct-01_222.0_65.5

Cold spell occuring from September 15 2021 to September 19 2021 at 51.5°N 233.0°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: September 15 2021 to September 19 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.2 °C
  • Mean temperature: 6.4 °C
  • Minimum temperature anomaly: -4.7 °C
  • Minimum temperature: 2.7 °C

Event center: 51.5°N 233.0°E

Area affected: 51582 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-15_to_2021-Sep-19_233.0_51.5

Cold spell occuring from September 12 2021 to September 15 2021 at 56.0°N 297.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 4 days

Time span: September 12 2021 to September 15 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -5.1 °C
  • Mean temperature: 1.3 °C
  • Minimum temperature anomaly: -7.7 °C
  • Minimum temperature: -1.4 °C

Event center: 56.0°N 297.5°E

Area affected: 74698 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-12_to_2021-Sep-15_297.5_56.0

Cold spell occuring from September 11 2021 to September 14 2021 at 58.0°N 290.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 4 days

Time span: September 11 2021 to September 14 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: 2.4 °C
  • Minimum temperature anomaly: -5.1 °C
  • Minimum temperature: 1.2 °C

Event center: 58.0°N 290.0°E

Area affected: 78685 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-11_to_2021-Sep-14_290.0_58.0

Cold spell occuring from September 09 2021 to September 20 2021 at 72.0°N 255.5°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: September 09 2021 to September 20 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: -7.0 °C
  • Minimum temperature anomaly: -8.0 °C
  • Minimum temperature: -11.8 °C

Event center: 72.0°N 255.5°E

Area affected: 105249 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-09_to_2021-Sep-20_255.5_72.0

Cold spell occuring from September 04 2021 to September 08 2021 at 74.5°N 251.5°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: September 04 2021 to September 08 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.0 °C
  • Mean temperature: -5.3 °C
  • Minimum temperature anomaly: -6.2 °C
  • Minimum temperature: -10.1 °C

Event center: 74.5°N 251.5°E

Area affected: 446404 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-04_to_2021-Sep-08_251.5_74.5