Category: Extremes affecting Canada

Cold spell occuring from July 18 2020 to July 23 2020 at 67.0°N 224.0°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: July 18 2020 to July 23 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -6.9 °C
  • Mean temperature: 7.4 °C
  • Minimum temperature anomaly: -10.0 °C
  • Minimum temperature: 2.4 °C

Event center: 67.0°N 224.0°E

Area affected: 92905 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-Jul-18_to_2020-Jul-23_224.0_67.0

Heat wave occuring from July 17 2020 to July 28 2020 at 49.5°N 293.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 12 days

Time span: July 17 2020 to July 28 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 3.0 °C
  • Mean temperature: 18.7 °C
  • Maximum temperature anomaly: 5.9 °C
  • Maximum temperature: 22.6 °C

Event center: 49.5°N 293.0°E

Area affected: 54097 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-Jul-17_to_2020-Jul-28_293.0_49.5

Cold spell occuring from July 14 2020 to July 17 2020 at 46.0°N 300.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 4 days

Time span: July 14 2020 to July 17 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 14.8 °C
  • Minimum temperature anomaly: -5.6 °C
  • Minimum temperature: 12.7 °C

Event center: 46.0°N 300.0°E

Area affected: 66442 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-Jul-14_to_2020-Jul-17_300.0_46.0

Heat wave occuring from July 12 2020 to July 18 2020 at 69.0°N 271.0°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 12 2020 to July 18 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 6.7 °C
  • Mean temperature: 14.8 °C
  • Maximum temperature anomaly: 11.6 °C
  • Maximum temperature: 20.2 °C

Event center: 69.0°N 271.0°E

Area affected: 129685 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-Jul-12_to_2020-Jul-18_271.0_69.0

Cold spell occuring from July 10 2020 to July 12 2020 at 66.0°N 220.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 3 days

Time span: July 10 2020 to July 12 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -5.6 °C
  • Mean temperature: 8.1 °C
  • Minimum temperature anomaly: -8.2 °C
  • Minimum temperature: 3.2 °C

Event center: 66.0°N 220.0°E

Area affected: 85980 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-Jul-10_to_2020-Jul-12_220.0_66.0

Heat wave occuring from July 10 2020 to July 13 2020 at 46.0°N 296.0°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: July 10 2020 to July 13 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: 21.5 °C
  • Maximum temperature anomaly: 5.3 °C
  • Maximum temperature: 24.0 °C

Event center: 46.0°N 296.0°E

Area affected: 57947 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-Jul-10_to_2020-Jul-13_296.0_46.0

Cold spell occuring from July 09 2020 to July 23 2020 at 70.5°N 208.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 15 days

Time span: July 09 2020 to July 23 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -4.2 °C
  • Mean temperature: 1.8 °C
  • Minimum temperature anomaly: -9.1 °C
  • Minimum temperature: -0.7 °C

Event center: 70.5°N 208.0°E

Area affected: 160865 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-Jul-09_to_2020-Jul-23_208.0_70.5

Cold spell occuring from July 09 2020 to July 16 2020 at 60.5°N 266.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 8 days

Time span: July 09 2020 to July 16 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 1.9 °C
  • Minimum temperature anomaly: -7.0 °C
  • Minimum temperature: 0.0 °C

Event center: 60.5°N 266.0°E

Area affected: 71603 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-Jul-09_to_2020-Jul-16_266.0_60.5

Heat wave occuring from July 05 2020 to July 08 2020 at 60.0°N 290.5°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: July 05 2020 to July 08 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 5.0 °C
  • Mean temperature: 12.9 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 20.3 °C

Event center: 60.0°N 290.5°E

Area affected: 60131 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-Jul-05_to_2020-Jul-08_290.5_60.0

Cold spell occuring from July 04 2020 to July 08 2020 at 64.5°N 226.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 5 days

Time span: July 04 2020 to July 08 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -5.4 °C
  • Mean temperature: 6.7 °C
  • Minimum temperature anomaly: -9.1 °C
  • Minimum temperature: 2.6 °C

Event center: 64.5°N 226.5°E

Area affected: 70537 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-Jul-04_to_2020-Jul-08_226.5_64.5