Category: Extremes affecting Canada

Cold spell occuring from June 30 2021 to July 06 2021 at 69.5°N 264.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 7 days

Time span: June 30 2021 to July 06 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.5 °C
  • Mean temperature: 1.8 °C
  • Minimum temperature anomaly: -7.6 °C
  • Minimum temperature: -0.2 °C

Event center: 69.5°N 264.5°E

Area affected: 111791 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_2021-Jun-30_to_2021-Jul-06_264.5_69.5

Heat wave occuring from June 30 2021 to July 04 2021 at 63.0°N 297.5°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 30 2021 to July 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 4.0 °C
  • Maximum temperature anomaly: 5.1 °C
  • Maximum temperature: 8.1 °C

Event center: 63.0°N 297.5°E

Area affected: 53806 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_2021-Jun-30_to_2021-Jul-04_297.5_63.0

Cold spell occuring from June 27 2021 to July 06 2021 at 80.0°N 277.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Greenland

Duration: 10 days

Time span: June 27 2021 to July 06 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 0.3 °C
  • Minimum temperature anomaly: -8.4 °C
  • Minimum temperature: -9.0 °C

Event center: 80.0°N 277.5°E

Area affected: 473894 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_2021-Jun-27_to_2021-Jul-06_277.5_80.0

Cold spell occuring from June 25 2021 to July 01 2021 at 60.0°N 281.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 7 days

Time span: June 25 2021 to July 01 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.8 °C
  • Mean temperature: 1.7 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: -1.0 °C

Event center: 60.0°N 281.5°E

Area affected: 52818 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_2021-Jun-25_to_2021-Jul-01_281.5_60.0

Heat wave occuring from June 23 2021 to October 12 2021 at 72.0°N 339.0°E

Download data: JSON

Event type: Heat wave

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

  • Albania
  • Algeria
  • Andorra
  • Bahamas
  • Belgium
  • Burkina Faso
  • Canada
  • Czechia
  • Denmark
  • Egypt
  • Finland
  • France
  • Germany
  • Greece
  • Greenland
  • Iceland
  • Ireland
  • Italy
  • Libya
  • Mali
  • Mauritania
  • Morocco
  • Netherlands
  • Niger
  • Norway
  • Poland
  • Portugal
  • Russian Federation
  • Spain
  • Svalbard and Jan Mayen
  • Sweden
  • Tunisia
  • Türkiye
  • United Kingdom
  • United States

Duration: 112 days

Time span: June 23 2021 to October 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 12.4 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 41.9 °C

Event center: 30.0°N 0.0°E

Area affected: 35897257 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_2021-Jun-23_to_2021-Oct-12_339.0_72.0

Cold spell occuring from June 19 2021 to June 24 2021 at 48.0°N 274.5°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: June 19 2021 to June 24 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -6.2 °C
  • Mean temperature: 9.6 °C
  • Minimum temperature anomaly: -10.0 °C
  • Minimum temperature: 5.4 °C

Event center: 48.0°N 274.5°E

Area affected: 90477 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_2021-Jun-19_to_2021-Jun-24_274.5_48.0

Heat wave occuring from June 17 2021 to June 26 2021 at 82.5°N 291.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 10 days

Time span: June 17 2021 to June 26 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 2.9 °C
  • Maximum temperature anomaly: 8.1 °C
  • Maximum temperature: 13.4 °C

Event center: 82.5°N 291.5°E

Area affected: 104286 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_2021-Jun-17_to_2021-Jun-26_291.5_82.5

Heat wave occuring from June 17 2021 to June 20 2021 at 83.0°N 222.5°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 17 2021 to June 20 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 0.4 °C
  • Mean temperature: 1.1 °C
  • Maximum temperature anomaly: 0.7 °C
  • Maximum temperature: 1.3 °C

Event center: 83.0°N 222.5°E

Area affected: 76184 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_2021-Jun-17_to_2021-Jun-20_222.5_83.0

Heat wave occuring from June 15 2021 to July 02 2021 at 50.5°N 302.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 18 days

Time span: June 15 2021 to July 02 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.5 °C
  • Mean temperature: 8.7 °C
  • Maximum temperature anomaly: 10.9 °C
  • Maximum temperature: 22.1 °C

Event center: 50.5°N 302.0°E

Area affected: 1616433 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_2021-Jun-15_to_2021-Jul-02_302.0_50.5

Heat wave occuring from June 14 2021 to June 24 2021 at 43.0°N 301.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 11 days

Time span: June 14 2021 to June 24 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.1 °C
  • Mean temperature: 15.6 °C
  • Maximum temperature anomaly: 5.5 °C
  • Maximum temperature: 20.7 °C

Event center: 43.0°N 301.5°E

Area affected: 84314 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_2021-Jun-14_to_2021-Jun-24_301.5_43.0