Category: Extremes affecting Canada

Cold spell occuring from July 09 2023 to July 20 2023 at 71.0°N 289.0°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: July 09 2023 to July 20 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -2.3 °C
  • Mean temperature: -0.3 °C
  • Minimum temperature anomaly: -6.8 °C
  • Minimum temperature: -3.3 °C

Event center: 71.0°N 289.0°E

Area affected: 101842 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_2023-Jul-09_to_2023-Jul-20_289.0_71.0

Heat wave occuring from July 05 2023 to July 20 2023 at 81.0°N 243.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 16 days

Time span: July 05 2023 to July 20 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 3.7 °C
  • Maximum temperature anomaly: 11.0 °C
  • Maximum temperature: 19.7 °C

Event center: 81.0°N 243.5°E

Area affected: 903211 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_2023-Jul-05_to_2023-Jul-20_243.5_81.0

Cold spell occuring from July 04 2023 to July 07 2023 at 85.0°N 291.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Greenland

Duration: 4 days

Time span: July 04 2023 to July 07 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -0.8 °C
  • Mean temperature: 0.2 °C
  • Minimum temperature anomaly: -2.0 °C
  • Minimum temperature: -0.6 °C

Event center: 85.0°N 291.0°E

Area affected: 166657 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_2023-Jul-04_to_2023-Jul-07_291.0_85.0

Heat wave occuring from July 04 2023 to July 06 2023 at 78.5°N 227.5°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: July 04 2023 to July 06 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 2.0 °C
  • Maximum temperature anomaly: 2.0 °C
  • Maximum temperature: 2.9 °C

Event center: 78.5°N 227.5°E

Area affected: 76534 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_2023-Jul-04_to_2023-Jul-06_227.5_78.5

Heat wave occuring from June 28 2023 to July 05 2023 at 49.0°N 302.0°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: June 28 2023 to July 05 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 5.9 °C
  • Mean temperature: 19.3 °C
  • Maximum temperature anomaly: 10.6 °C
  • Maximum temperature: 24.8 °C

Event center: 49.0°N 302.0°E

Area affected: 97229 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_2023-Jun-28_to_2023-Jul-05_302.0_49.0

Cold spell occuring from June 27 2023 to August 01 2023 at 48.0°N 271.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 36 days

Time span: June 27 2023 to August 01 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -5.9 °C
  • Mean temperature: 11.2 °C
  • Minimum temperature anomaly: -11.3 °C
  • Minimum temperature: 3.8 °C

Event center: 48.0°N 271.0°E

Area affected: 748552 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_2023-Jun-27_to_2023-Aug-01_271.0_48.0

Heat wave occuring from June 27 2023 to July 01 2023 at 85.5°N 200.5°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 27 2023 to July 01 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 0.4 °C
  • Mean temperature: 1.2 °C
  • Maximum temperature anomaly: 0.6 °C
  • Maximum temperature: 1.4 °C

Event center: 85.5°N 200.5°E

Area affected: 59582 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_2023-Jun-27_to_2023-Jul-01_200.5_85.5

Heat wave occuring from June 22 2023 to June 25 2023 at 48.0°N 305.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 4 days

Time span: June 22 2023 to June 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 6.0 °C
  • Mean temperature: 18.8 °C
  • Maximum temperature anomaly: 9.3 °C
  • Maximum temperature: 23.0 °C

Event center: 48.0°N 305.5°E

Area affected: 57608 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_2023-Jun-22_to_2023-Jun-25_305.5_48.0

Cold spell occuring from June 21 2023 to July 20 2023 at 71.0°N 283.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 30 days

Time span: June 21 2023 to July 20 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 1.0 °C
  • Minimum temperature anomaly: -8.5 °C
  • Minimum temperature: -4.8 °C

Event center: 71.0°N 283.0°E

Area affected: 349270 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_2023-Jun-21_to_2023-Jul-20_283.0_71.0

Heat wave occuring from June 19 2023 to June 25 2023 at 60.5°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: 7 days

Time span: June 19 2023 to June 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 10.8 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 18.6 °C

Event center: 60.5°N 218.5°E

Area affected: 55422 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_2023-Jun-19_to_2023-Jun-25_218.5_60.5