Category: Extremes affecting Canada

Heat wave occuring from June 14 2021 to June 20 2021 at 67.5°N 220.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 7 days

Time span: June 14 2021 to June 20 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 17.1 °C
  • Maximum temperature anomaly: 10.7 °C
  • Maximum temperature: 24.2 °C

Event center: 67.5°N 220.0°E

Area affected: 225959 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-Jun-14_to_2021-Jun-20_220.0_67.5

Heat wave occuring from June 06 2021 to June 10 2021 at 83.5°N 205.5°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: June 06 2021 to June 10 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 0.8 °C
  • Maximum temperature anomaly: 1.4 °C
  • Maximum temperature: 1.2 °C

Event center: 83.5°N 205.5°E

Area affected: 183958 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-Jun-06_to_2021-Jun-10_205.5_83.5

Cold spell occuring from June 06 2021 to June 11 2021 at 51.0°N 237.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 6 days

Time span: June 06 2021 to June 11 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.6 °C
  • Mean temperature: 4.3 °C
  • Minimum temperature anomaly: -6.9 °C
  • Minimum temperature: -1.9 °C

Event center: 51.0°N 237.5°E

Area affected: 113564 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-Jun-06_to_2021-Jun-11_237.5_51.0

Heat wave occuring from June 05 2021 to June 16 2021 at 77.5°N 283.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 12 days

Time span: June 05 2021 to June 16 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.2 °C
  • Mean temperature: 1.9 °C
  • Maximum temperature anomaly: 9.6 °C
  • Maximum temperature: 13.2 °C

Event center: 77.5°N 283.0°E

Area affected: 687006 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-Jun-05_to_2021-Jun-16_283.0_77.5

Heat wave occuring from June 01 2021 to August 09 2021 at 40.5°N 218.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 70 days

Time span: June 01 2021 to August 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.1 °C
  • Mean temperature: 20.2 °C
  • Maximum temperature anomaly: 12.1 °C
  • Maximum temperature: 33.7 °C

Event center: 40.5°N 218.5°E

Area affected: 15500380 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-Jun-01_to_2021-Aug-09_218.5_40.5

Heat wave occuring from May 30 2021 to June 05 2021 at 59.0°N 297.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 7 days

Time span: May 30 2021 to June 05 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 6.0 °C
  • Maximum temperature anomaly: 14.3 °C
  • Maximum temperature: 17.3 °C

Event center: 59.0°N 297.5°E

Area affected: 242035 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-May-30_to_2021-Jun-05_297.5_59.0

Heat wave occuring from May 29 2021 to July 20 2021 at 49.0°N 241.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Mexico
  • Portugal
  • United States

Duration: 53 days

Time span: May 29 2021 to July 20 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: 23.5 °C
  • Maximum temperature anomaly: 19.1 °C
  • Maximum temperature: 43.4 °C

Event center: 49.0°N 241.5°E

Area affected: 21062109 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-May-29_to_2021-Jul-20_241.5_49.0

Cold spell occuring from May 27 2021 to May 29 2021 at 48.5°N 286.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 3 days

Time span: May 27 2021 to May 29 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -6.9 °C
  • Mean temperature: 5.4 °C
  • Minimum temperature anomaly: -10.2 °C
  • Minimum temperature: 2.0 °C

Event center: 48.5°N 286.5°E

Area affected: 90975 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-May-27_to_2021-May-29_286.5_48.5

Cold spell occuring from May 27 2021 to May 31 2021 at 42.5°N 286.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 5 days

Time span: May 27 2021 to May 31 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -7.7 °C
  • Mean temperature: 9.3 °C
  • Minimum temperature anomaly: -11.4 °C
  • Minimum temperature: 4.7 °C

Event center: 42.5°N 286.0°E

Area affected: 419539 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-May-27_to_2021-May-31_286.0_42.5

Cold spell occuring from May 26 2021 to May 30 2021 at 68.5°N 212.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 5 days

Time span: May 26 2021 to May 30 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -8.6 °C
  • Mean temperature: -0.6 °C
  • Minimum temperature anomaly: -12.6 °C
  • Minimum temperature: -13.1 °C

Event center: 68.5°N 212.5°E

Area affected: 227269 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-May-26_to_2021-May-30_212.5_68.5