Category: Heat waves affecting Canada

16 heat waves identified in Canada since 2020

Heat wave occuring from September 28 2011 to October 18 2011 at 55.5°N 276.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 21 days

Time span: September 28 2011 to October 18 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 8.1 °C
  • Mean temperature: 15.0 °C
  • Maximum temperature anomaly: 16.9 °C
  • Maximum temperature: 26.7 °C

Event center: 55.5°N 276.0°E

Area affected: 5627417 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_2011-Sep-28_to_2011-Oct-18_276.0_55.5

Heat wave occuring from September 26 2011 to September 29 2011 at 47.5°N 282.0°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: September 26 2011 to September 29 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.1 °C
  • Mean temperature: 17.2 °C
  • Maximum temperature anomaly: 7.7 °C
  • Maximum temperature: 19.7 °C

Event center: 47.5°N 282.0°E

Area affected: 95969 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_2011-Sep-26_to_2011-Sep-29_282.0_47.5

Heat wave occuring from September 23 2011 to September 28 2011 at 44.5°N 292.0°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: September 23 2011 to September 28 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 18.9 °C
  • Maximum temperature anomaly: 7.4 °C
  • Maximum temperature: 22.7 °C

Event center: 44.5°N 292.0°E

Area affected: 285827 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_2011-Sep-23_to_2011-Sep-28_292.0_44.5

Heat wave occuring from September 20 2011 to September 24 2011 at 70.5°N 246.5°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: September 20 2011 to September 24 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 3.1 °C
  • Maximum temperature anomaly: 6.3 °C
  • Maximum temperature: 5.6 °C

Event center: 70.5°N 246.5°E

Area affected: 51538 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_2011-Sep-20_to_2011-Sep-24_246.5_70.5

Heat wave occuring from September 18 2011 to September 28 2011 at 59.5°N 270.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 11 days

Time span: September 18 2011 to September 28 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.5 °C
  • Mean temperature: 12.0 °C
  • Maximum temperature anomaly: 12.2 °C
  • Maximum temperature: 31.2 °C

Event center: 59.5°N 270.5°E

Area affected: 4902194 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_2011-Sep-18_to_2011-Sep-28_270.5_59.5

Heat wave occuring from September 18 2011 to September 20 2011 at 57.0°N 285.5°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: September 18 2011 to September 20 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.0 °C
  • Mean temperature: 10.4 °C
  • Maximum temperature anomaly: 7.9 °C
  • Maximum temperature: 13.6 °C

Event center: 57.0°N 285.5°E

Area affected: 155042 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_2011-Sep-18_to_2011-Sep-20_285.5_57.0

Heat wave occuring from September 13 2011 to September 16 2011 at 66.0°N 224.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 4 days

Time span: September 13 2011 to September 16 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 10.1 °C
  • Maximum temperature anomaly: 9.3 °C
  • Maximum temperature: 15.0 °C

Event center: 66.0°N 224.0°E

Area affected: 367128 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_2011-Sep-13_to_2011-Sep-16_224.0_66.0

Heat wave occuring from September 05 2011 to September 14 2011 at 49.5°N 240.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 10 days

Time span: September 05 2011 to September 14 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.9 °C
  • Mean temperature: 19.0 °C
  • Maximum temperature anomaly: 12.1 °C
  • Maximum temperature: 28.4 °C

Event center: 49.5°N 240.5°E

Area affected: 3530661 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_2011-Sep-05_to_2011-Sep-14_240.5_49.5

Heat wave occuring from September 03 2011 to October 06 2011 at 31.5°N 301.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 34 days

Time span: September 03 2011 to October 06 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 25.8 °C
  • Maximum temperature anomaly: 5.4 °C
  • Maximum temperature: 27.8 °C

Event center: 31.5°N 301.5°E

Area affected: 2862659 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_2011-Sep-03_to_2011-Oct-06_301.5_31.5

Heat wave occuring from September 02 2011 to September 09 2011 at 73.5°N 234.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 8 days

Time span: September 02 2011 to September 09 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.7 °C
  • Mean temperature: 3.4 °C
  • Maximum temperature anomaly: 5.5 °C
  • Maximum temperature: 7.1 °C

Event center: 73.5°N 234.5°E

Area affected: 106123 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_2011-Sep-02_to_2011-Sep-09_234.5_73.5