Category: Cold spells affecting Canada

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 4 days

Time span: March 22 2010 to March 25 2010

Statistics over entire affected area:

• Mean temperature anomaly: -11.3 °C
• Mean temperature: -24.1 °C
• Minimum temperature anomaly: -15.1 °C
• Minimum temperature: -29.0 °C

Event center: 61.0°N 247.0°E

Area affected: 55304 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_2010-Mar-22_to_2010-Mar-25_247.0_61.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 6 days

Time span: March 21 2010 to March 26 2010

Statistics over entire affected area:

• Mean temperature anomaly: -9.2 °C
• Mean temperature: -26.5 °C
• Minimum temperature anomaly: -12.2 °C
• Minimum temperature: -30.2 °C

Event center: 66.0°N 240.5°E

Area affected: 52232 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_2010-Mar-21_to_2010-Mar-26_240.5_66.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 7 days

Time span: March 21 2010 to March 27 2010

Statistics over entire affected area:

• Mean temperature anomaly: -10.2 °C
• Mean temperature: -30.6 °C
• Minimum temperature anomaly: -14.9 °C
• Minimum temperature: -36.4 °C

Event center: 62.0°N 266.0°E

Area affected: 205907 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_2010-Mar-21_to_2010-Mar-27_266.0_62.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 8 days

Time span: January 31 2010 to February 07 2010

Statistics over entire affected area:

• Mean temperature anomaly: -5.3 °C
• Mean temperature: -2.8 °C
• Minimum temperature anomaly: -9.4 °C
• Minimum temperature: -17.2 °C

Event center: 43.0°N 300.5°E

Area affected: 776781 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_2010-Jan-31_to_2010-Feb-07_300.5_43.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 14 days

Time span: August 07 2026 to August 20 2026

Statistics over entire affected area:

• Mean temperature anomaly: -3.0 °C
• Mean temperature: 1.0 °C
• Minimum temperature anomaly: -6.8 °C
• Minimum temperature: -3.3 °C

Event center: 65.0°N 296.5°E

Area affected: 121254 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_2026-Aug-07_to_2026-Aug-20_296.5_65.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 13 days

Time span: July 24 2026 to August 05 2026

Statistics over entire affected area:

• Mean temperature anomaly: -3.6 °C
• Mean temperature: 1.3 °C
• Minimum temperature anomaly: -5.8 °C
• Minimum temperature: -0.8 °C

Event center: 71.0°N 235.5°E

Area affected: 52607 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_2026-Jul-24_to_2026-Aug-05_235.5_71.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 7 days

Time span: July 15 2026 to July 21 2026

Statistics over entire affected area:

• Mean temperature anomaly: -5.6 °C
• Mean temperature: 7.6 °C
• Minimum temperature anomaly: -8.5 °C
• Minimum temperature: 4.1 °C

Event center: 58.0°N 293.0°E

Area affected: 129604 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_2026-Jul-15_to_2026-Jul-21_293.0_58.0

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 08 2026 to July 11 2026

Statistics over entire affected area:

• Mean temperature anomaly: -3.8 °C
• Mean temperature: 8.4 °C
• Minimum temperature anomaly: -6.6 °C
• Minimum temperature: 1.5 °C

Event center: 58.0°N 234.0°E

Area affected: 58853 km$^2$

Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Jul-08_to_2026-Jul-11_234.0_58.0