Category: Extremes affecting Canada

Heat wave occuring from July 10 2021 to July 16 2021 at 59.0°N 266.0°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: July 10 2021 to July 16 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 11.0 °C
  • Maximum temperature anomaly: 9.8 °C
  • Maximum temperature: 17.1 °C

Event center: 59.0°N 266.0°E

Area affected: 56798 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-Jul-10_to_2021-Jul-16_266.0_59.0

Cold spell occuring from July 09 2021 to July 17 2021 at 74.5°N 264.5°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: July 09 2021 to July 17 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.6 °C
  • Mean temperature: 1.5 °C
  • Minimum temperature anomaly: -6.3 °C
  • Minimum temperature: -3.9 °C

Event center: 74.5°N 264.5°E

Area affected: 120786 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-Jul-09_to_2021-Jul-17_264.5_74.5

Heat wave occuring from July 08 2021 to July 14 2021 at 83.0°N 297.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 7 days

Time span: July 08 2021 to July 14 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 1.4 °C
  • Mean temperature: 2.4 °C
  • Maximum temperature anomaly: 8.2 °C
  • Maximum temperature: 10.9 °C

Event center: 83.0°N 297.5°E

Area affected: 376301 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-Jul-08_to_2021-Jul-14_297.5_83.0

Cold spell occuring from July 07 2021 to July 09 2021 at 45.5°N 279.5°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: July 07 2021 to July 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.9 °C
  • Mean temperature: 14.4 °C
  • Minimum temperature anomaly: -7.0 °C
  • Minimum temperature: 11.5 °C

Event center: 45.5°N 279.5°E

Area affected: 86370 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-Jul-07_to_2021-Jul-09_279.5_45.5

Cold spell occuring from July 05 2021 to July 12 2021 at 63.5°N 201.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 8 days

Time span: July 05 2021 to July 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.6 °C
  • Mean temperature: 8.7 °C
  • Minimum temperature anomaly: -8.1 °C
  • Minimum temperature: -3.5 °C

Event center: 63.5°N 201.5°E

Area affected: 677282 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-Jul-05_to_2021-Jul-12_201.5_63.5

Cold spell occuring from July 03 2021 to July 13 2021 at 74.0°N 294.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 11 days

Time span: July 03 2021 to July 13 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -1.8 °C
  • Mean temperature: -0.4 °C
  • Minimum temperature anomaly: -3.4 °C
  • Minimum temperature: -2.3 °C

Event center: 74.0°N 294.5°E

Area affected: 112463 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-Jul-03_to_2021-Jul-13_294.5_74.0

Cold spell occuring from July 01 2021 to July 11 2021 at 64.0°N 287.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 11 days

Time span: July 01 2021 to July 11 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 3.7 °C
  • Minimum temperature anomaly: -7.1 °C
  • Minimum temperature: -0.6 °C

Event center: 64.0°N 287.0°E

Area affected: 134087 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-Jul-01_to_2021-Jul-11_287.0_64.0

Cold spell occuring from July 01 2021 to July 05 2021 at 42.0°N 289.0°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: July 01 2021 to July 05 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -5.2 °C
  • Mean temperature: 13.5 °C
  • Minimum temperature anomaly: -8.7 °C
  • Minimum temperature: 8.8 °C

Event center: 42.0°N 289.0°E

Area affected: 326421 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-Jul-01_to_2021-Jul-05_289.0_42.0

Heat wave occuring from July 01 2021 to July 06 2021 at 54.0°N 295.0°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: July 01 2021 to July 06 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 6.3 °C
  • Mean temperature: 16.5 °C
  • Maximum temperature anomaly: 13.2 °C
  • Maximum temperature: 22.5 °C

Event center: 54.0°N 295.0°E

Area affected: 339936 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-Jul-01_to_2021-Jul-06_295.0_54.0

Cold spell occuring from June 30 2021 to July 11 2021 at 75.0°N 304.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Greenland

Duration: 12 days

Time span: June 30 2021 to July 11 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: -5.2 °C
  • Minimum temperature anomaly: -7.9 °C
  • Minimum temperature: -14.4 °C

Event center: 75.0°N 304.0°E

Area affected: 555727 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-30_to_2021-Jul-11_304.0_75.0