Category: Extremes affecting Canada

Heat wave occuring from June 06 2023 to June 11 2023 at 57.5°N 268.0°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: June 06 2023 to June 11 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 3.1 °C
  • Mean temperature: 4.1 °C
  • Maximum temperature anomaly: 14.6 °C
  • Maximum temperature: 22.7 °C

Event center: 57.5°N 268.0°E

Area affected: 252629 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-06_to_2023-Jun-11_268.0_57.5

Cold spell occuring from June 03 2023 to June 11 2023 at 48.0°N 297.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 9 days

Time span: June 03 2023 to June 11 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.5 °C
  • Mean temperature: 8.3 °C
  • Minimum temperature anomaly: -8.5 °C
  • Minimum temperature: 3.5 °C

Event center: 48.0°N 297.0°E

Area affected: 334604 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-03_to_2023-Jun-11_297.0_48.0

Cold spell occuring from May 29 2023 to June 09 2023 at 75.5°N 191.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Russian Federation
  • United States

Duration: 12 days

Time span: May 29 2023 to June 09 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: -1.5 °C
  • Minimum temperature anomaly: -11.7 °C
  • Minimum temperature: -12.3 °C

Event center: 75.5°N 191.5°E

Area affected: 2654408 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-May-29_to_2023-Jun-09_191.5_75.5

Cold spell occuring from May 27 2023 to June 22 2023 at 76.5°N 291.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Greenland

Duration: 27 days

Time span: May 27 2023 to June 22 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.5 °C
  • Mean temperature: -8.5 °C
  • Minimum temperature anomaly: -11.2 °C
  • Minimum temperature: -24.3 °C

Event center: 76.5°N 291.5°E

Area affected: 2272017 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-May-27_to_2023-Jun-22_291.5_76.5

Cold spell occuring from May 26 2023 to May 28 2023 at 66.5°N 290.0°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 26 2023 to May 28 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: -6.6 °C
  • Minimum temperature anomaly: -6.5 °C
  • Minimum temperature: -10.8 °C

Event center: 66.5°N 290.0°E

Area affected: 107945 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-May-26_to_2023-May-28_290.0_66.5

Cold spell occuring from May 24 2023 to May 26 2023 at 78.0°N 258.5°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 24 2023 to May 26 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: -9.0 °C
  • Minimum temperature anomaly: -6.2 °C
  • Minimum temperature: -12.2 °C

Event center: 78.0°N 258.5°E

Area affected: 74787 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-May-24_to_2023-May-26_258.5_78.0

Heat wave occuring from May 24 2023 to May 30 2023 at 51.5°N 234.5°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 24 2023 to May 30 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 5.5 °C
  • Mean temperature: 10.7 °C
  • Maximum temperature anomaly: 8.2 °C
  • Maximum temperature: 15.4 °C

Event center: 51.5°N 234.5°E

Area affected: 57871 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-May-24_to_2023-May-30_234.5_51.5

Cold spell occuring from May 19 2023 to May 24 2023 at 72.5°N 281.5°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: May 19 2023 to May 24 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -5.5 °C
  • Mean temperature: -9.9 °C
  • Minimum temperature anomaly: -9.6 °C
  • Minimum temperature: -16.8 °C

Event center: 72.5°N 281.5°E

Area affected: 805587 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-May-19_to_2023-May-24_281.5_72.5

Cold spell occuring from May 16 2023 to May 18 2023 at 48.5°N 282.5°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 16 2023 to May 18 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -6.8 °C
  • Mean temperature: -0.4 °C
  • Minimum temperature anomaly: -10.5 °C
  • Minimum temperature: -3.8 °C

Event center: 48.5°N 282.5°E

Area affected: 139867 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-May-16_to_2023-May-18_282.5_48.5

Heat wave occuring from May 11 2023 to May 16 2023 at 43.0°N 289.5°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: May 11 2023 to May 16 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 13.6 °C
  • Maximum temperature anomaly: 8.3 °C
  • Maximum temperature: 21.8 °C

Event center: 43.0°N 289.5°E

Area affected: 174493 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-May-11_to_2023-May-16_289.5_43.0