Category: Extremes affecting Canada

Cold spell occuring from March 09 2025 to March 13 2025 at 58.5°N 249.5°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: March 09 2025 to March 13 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -11.7 °C
  • Mean temperature: -26.6 °C
  • Minimum temperature anomaly: -14.7 °C
  • Minimum temperature: -32.4 °C

Event center: 58.5°N 249.5°E

Area affected: 71315 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_2025-Mar-09_to_2025-Mar-13_249.5_58.5

Heat wave occuring from March 07 2025 to March 09 2025 at 43.0°N 312.5°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: March 07 2025 to March 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 4.6 °C
  • Mean temperature: 6.1 °C
  • Maximum temperature anomaly: 7.6 °C
  • Maximum temperature: 15.3 °C

Event center: 43.0°N 312.5°E

Area affected: 137820 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_2025-Mar-07_to_2025-Mar-09_312.5_43.0

Cold spell occuring from February 13 2025 to February 16 2025 at 57.5°N 273.0°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: February 13 2025 to February 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.5 °C
  • Mean temperature: -29.6 °C
  • Minimum temperature anomaly: -11.9 °C
  • Minimum temperature: -36.6 °C

Event center: 57.5°N 273.0°E

Area affected: 167080 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_2025-Feb-13_to_2025-Feb-16_273.0_57.5

Cold spell occuring from January 29 2025 to February 24 2025 at 52.0°N 232.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Mexico
  • United States

Duration: 27 days

Time span: January 29 2025 to February 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -10.6 °C
  • Mean temperature: -11.3 °C
  • Minimum temperature anomaly: -26.9 °C
  • Minimum temperature: -42.6 °C

Event center: 52.0°N 232.0°E

Area affected: 12758374 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_2025-Jan-29_to_2025-Feb-24_232.0_52.0

Heat wave occuring from January 28 2025 to January 31 2025 at 68.0°N 281.0°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: January 28 2025 to January 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 8.1 °C
  • Mean temperature: -19.5 °C
  • Maximum temperature anomaly: 10.8 °C
  • Maximum temperature: -17.2 °C

Event center: 68.0°N 281.0°E

Area affected: 53563 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_2025-Jan-28_to_2025-Jan-31_281.0_68.0

Heat wave occuring from January 22 2025 to January 24 2025 at 65.0°N 271.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 3 days

Time span: January 22 2025 to January 24 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 11.2 °C
  • Mean temperature: -20.9 °C
  • Maximum temperature anomaly: 15.5 °C
  • Maximum temperature: -16.8 °C

Event center: 65.0°N 271.0°E

Area affected: 97309 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_2025-Jan-22_to_2025-Jan-24_271.0_65.0

Heat wave occuring from January 19 2025 to January 31 2025 at 65.5°N 296.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 13 days

Time span: January 19 2025 to January 31 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 10.0 °C
  • Mean temperature: -15.6 °C
  • Maximum temperature anomaly: 18.7 °C
  • Maximum temperature: -7.7 °C

Event center: 65.5°N 296.0°E

Area affected: 101385 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_2025-Jan-19_to_2025-Jan-31_296.0_65.5

Cold spell occuring from January 18 2025 to January 30 2025 at 44.0°N 244.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Mexico
  • United States

Duration: 13 days

Time span: January 18 2025 to January 30 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -9.7 °C
  • Mean temperature: -6.3 °C
  • Minimum temperature anomaly: -22.4 °C
  • Minimum temperature: -35.6 °C

Event center: 44.0°N 244.5°E

Area affected: 7134980 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_2025-Jan-18_to_2025-Jan-30_244.5_44.0

Cold spell occuring from January 10 2025 to January 16 2025 at 81.5°N 213.0°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: January 10 2025 to January 16 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -6.1 °C
  • Mean temperature: -32.0 °C
  • Minimum temperature anomaly: -6.9 °C
  • Minimum temperature: -33.3 °C

Event center: 81.5°N 213.0°E

Area affected: 118734 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_2025-Jan-10_to_2025-Jan-16_213.0_81.5

Cold spell occuring from January 08 2025 to January 21 2025 at 73.5°N 333.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Greenland

Duration: 14 days

Time span: January 08 2025 to January 21 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -9.6 °C
  • Mean temperature: -41.2 °C
  • Minimum temperature anomaly: -15.9 °C
  • Minimum temperature: -53.2 °C

Event center: 73.5°N 333.5°E

Area affected: 1328047 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_2025-Jan-08_to_2025-Jan-21_333.5_73.5