Category: Extremes affecting Canada

Heat wave occuring from September 22 2020 to October 09 2020 at 45.5°N 309.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 18 days

Time span: September 22 2020 to October 09 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 4.4 °C
  • Mean temperature: 19.2 °C
  • Maximum temperature anomaly: 12.9 °C
  • Maximum temperature: 26.1 °C

Event center: 45.5°N 309.0°E

Area affected: 4529154 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_2020-Sep-22_to_2020-Oct-09_309.0_45.5

Heat wave occuring from September 21 2020 to September 23 2020 at 58.0°N 291.0°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 21 2020 to September 23 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 5.6 °C
  • Mean temperature: 9.8 °C
  • Maximum temperature anomaly: 8.4 °C
  • Maximum temperature: 13.5 °C

Event center: 58.0°N 291.0°E

Area affected: 74237 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_2020-Sep-21_to_2020-Sep-23_291.0_58.0

Heat wave occuring from September 20 2020 to September 23 2020 at 46.5°N 258.5°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 20 2020 to September 23 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 6.1 °C
  • Mean temperature: 18.7 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 20.2 °C

Event center: 46.5°N 258.5°E

Area affected: 54091 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_2020-Sep-20_to_2020-Sep-23_258.5_46.5

Heat wave occuring from September 19 2020 to September 22 2020 at 63.0°N 274.5°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: September 19 2020 to September 22 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 3.3 °C
  • Mean temperature: 7.2 °C
  • Maximum temperature anomaly: 5.3 °C
  • Maximum temperature: 8.3 °C

Event center: 63.0°N 274.5°E

Area affected: 199169 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_2020-Sep-19_to_2020-Sep-22_274.5_63.0

Cold spell occuring from September 14 2020 to October 01 2020 at 77.5°N 316.0°E

Download data: JSON

Event type: Cold spell

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

  • Andorra
  • Austria
  • Canada
  • Croatia
  • France
  • Germany
  • Greenland
  • Iceland
  • Ireland
  • Italy
  • Luxembourg
  • Slovenia
  • Spain
  • Switzerland
  • United Kingdom

Duration: 18 days

Time span: September 14 2020 to October 01 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -6.8 °C
  • Mean temperature: -14.1 °C
  • Minimum temperature anomaly: -15.9 °C
  • Minimum temperature: -41.4 °C

Event center: 77.5°N 316.0°E

Area affected: 4939781 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_2020-Sep-14_to_2020-Oct-01_316.0_77.5

Heat wave occuring from September 10 2020 to September 15 2020 at 73.5°N 284.0°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: September 10 2020 to September 15 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 1.9 °C
  • Mean temperature: 1.9 °C
  • Maximum temperature anomaly: 3.3 °C
  • Maximum temperature: 2.7 °C

Event center: 73.5°N 284.0°E

Area affected: 58260 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_2020-Sep-10_to_2020-Sep-15_284.0_73.5

Cold spell occuring from September 06 2020 to September 08 2020 at 60.0°N 255.5°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: September 06 2020 to September 08 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -5.5 °C
  • Mean temperature: 3.3 °C
  • Minimum temperature anomaly: -7.0 °C
  • Minimum temperature: 1.4 °C

Event center: 60.0°N 255.5°E

Area affected: 89103 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_2020-Sep-06_to_2020-Sep-08_255.5_60.0

Cold spell occuring from September 06 2020 to September 24 2020 at 37.5°N 254.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Mexico
  • United States

Duration: 19 days

Time span: September 06 2020 to September 24 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -7.1 °C
  • Mean temperature: 10.4 °C
  • Minimum temperature anomaly: -19.6 °C
  • Minimum temperature: -8.0 °C

Event center: 37.5°N 254.0°E

Area affected: 7511009 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_2020-Sep-06_to_2020-Sep-24_254.0_37.5

Heat wave occuring from September 04 2020 to September 07 2020 at 48.5°N 241.0°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 04 2020 to September 07 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 6.4 °C
  • Mean temperature: 22.6 °C
  • Maximum temperature anomaly: 9.4 °C
  • Maximum temperature: 26.9 °C

Event center: 48.5°N 241.0°E

Area affected: 55400 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_2020-Sep-04_to_2020-Sep-07_241.0_48.5

Heat wave occuring from August 14 2020 to August 28 2020 at 59.0°N 208.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 15 days

Time span: August 14 2020 to August 28 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 4.4 °C
  • Mean temperature: 13.4 °C
  • Maximum temperature anomaly: 9.2 °C
  • Maximum temperature: 20.1 °C

Event center: 59.0°N 208.0°E

Area affected: 1869447 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_2020-Aug-14_to_2020-Aug-28_208.0_59.0