Category: Extremes affecting Canada

Cold spell occuring from May 26 2021 to June 05 2021 at 36.5°N 264.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Mexico
  • United States

Duration: 11 days

Time span: May 26 2021 to June 05 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -5.9 °C
  • Mean temperature: 16.3 °C
  • Minimum temperature anomaly: -11.7 °C
  • Minimum temperature: 4.7 °C

Event center: 36.5°N 264.0°E

Area affected: 2511146 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-May-26_to_2021-Jun-05_264.0_36.5

Heat wave occuring from May 24 2021 to June 06 2021 at 69.0°N 308.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland
  • Iceland

Duration: 14 days

Time span: May 24 2021 to June 06 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: -3.0 °C
  • Maximum temperature anomaly: 11.5 °C
  • Maximum temperature: 14.7 °C

Event center: 69.0°N 308.0°E

Area affected: 2011730 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-May-24_to_2021-Jun-06_308.0_69.0

Heat wave occuring from May 19 2021 to May 23 2021 at 49.0°N 307.0°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: May 19 2021 to May 23 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: 6.4 °C
  • Maximum temperature anomaly: 7.6 °C
  • Maximum temperature: 13.0 °C

Event center: 49.0°N 307.0°E

Area affected: 142691 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-May-19_to_2021-May-23_307.0_49.0

Heat wave occuring from May 17 2021 to May 21 2021 at 85.0°N 234.0°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: May 17 2021 to May 21 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.0 °C
  • Mean temperature: -3.0 °C
  • Maximum temperature anomaly: 4.8 °C
  • Maximum temperature: -2.1 °C

Event center: 85.0°N 234.0°E

Area affected: 50639 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-May-17_to_2021-May-21_234.0_85.0

Cold spell occuring from May 15 2021 to May 24 2021 at 42.0°N 235.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 10 days

Time span: May 15 2021 to May 24 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -2.5 °C
  • Mean temperature: 9.2 °C
  • Minimum temperature anomaly: -4.9 °C
  • Minimum temperature: 5.1 °C

Event center: 42.0°N 235.0°E

Area affected: 73323 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-May-15_to_2021-May-24_235.0_42.0

Heat wave occuring from May 10 2021 to May 26 2021 at 51.0°N 301.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 17 days

Time span: May 10 2021 to May 26 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.7 °C
  • Mean temperature: 19.3 °C
  • Maximum temperature anomaly: 14.5 °C
  • Maximum temperature: 27.3 °C

Event center: 51.0°N 301.5°E

Area affected: 2335661 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-May-10_to_2021-May-26_301.5_51.0

Cold spell occuring from May 09 2021 to May 28 2021 at 64.0°N 285.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 20 days

Time span: May 09 2021 to May 28 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -5.7 °C
  • Mean temperature: -10.1 °C
  • Minimum temperature anomaly: -14.5 °C
  • Minimum temperature: -30.1 °C

Event center: 64.0°N 285.0°E

Area affected: 5785885 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-May-09_to_2021-May-28_285.0_64.0

Cold spell occuring from May 05 2021 to May 12 2021 at 40.5°N 273.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 8 days

Time span: May 05 2021 to May 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -6.8 °C
  • Mean temperature: 8.2 °C
  • Minimum temperature anomaly: -10.2 °C
  • Minimum temperature: 2.9 °C

Event center: 40.5°N 273.5°E

Area affected: 599299 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-May-05_to_2021-May-12_273.5_40.5

Heat wave occuring from May 01 2021 to May 04 2021 at 47.5°N 308.0°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: May 01 2021 to May 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 3.8 °C
  • Maximum temperature anomaly: 3.0 °C
  • Maximum temperature: 5.2 °C

Event center: 47.5°N 308.0°E

Area affected: 100121 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-May-01_to_2021-May-04_308.0_47.5

Heat wave occuring from April 29 2021 to May 01 2021 at 46.5°N 242.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 3 days

Time span: April 29 2021 to May 01 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 6.4 °C
  • Mean temperature: 12.8 °C
  • Maximum temperature anomaly: 10.2 °C
  • Maximum temperature: 23.3 °C

Event center: 46.5°N 242.0°E

Area affected: 118730 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-Apr-29_to_2021-May-01_242.0_46.5