Category: Extremes affecting Canada

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 28 days

Time span: June 27 2025 to July 24 2025

Statistics over entire affected area:

• Mean temperature anomaly: -3.5 °C
• Mean temperature: 0.4 °C
• Minimum temperature anomaly: -8.5 °C
• Minimum temperature: -7.9 °C

Event center: 77.5°N 267.5°E

Area affected: 289715 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-Jun-27_to_2025-Jul-24_267.5_77.5

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 3 days

Time span: June 20 2025 to June 22 2025

Statistics over entire affected area:

• Mean temperature anomaly: -6.5 °C
• Mean temperature: 8.8 °C
• Minimum temperature anomaly: -8.6 °C
• Minimum temperature: 6.1 °C

Event center: 60.0°N 249.5°E

Area affected: 51914 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-Jun-20_to_2025-Jun-22_249.5_60.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 17 days

Time span: June 15 2025 to July 01 2025

Statistics over entire affected area:

• Mean temperature anomaly: -2.2 °C
• Mean temperature: 6.6 °C
• Minimum temperature anomaly: -8.3 °C
• Minimum temperature: -1.8 °C

Event center: 53.5°N 317.5°E

Area affected: 1363575 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-Jun-15_to_2025-Jul-01_317.5_53.5

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 8 days

Time span: June 15 2025 to June 22 2025

Statistics over entire affected area:

• Mean temperature anomaly: -4.6 °C
• Mean temperature: 0.4 °C
• Minimum temperature anomaly: -6.3 °C
• Minimum temperature: -2.0 °C

Event center: 62.0°N 282.5°E

Area affected: 97150 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-Jun-15_to_2025-Jun-22_282.5_62.0