Category: Extremes affecting Canada

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 5 days

Time span: September 15 2021 to September 19 2021

Statistics over entire affected area:

• Mean temperature anomaly: -3.2 °C
• Mean temperature: 6.4 °C
• Minimum temperature anomaly: -4.7 °C
• Minimum temperature: 2.7 °C

Event center: 51.5°N 233.0°E

Area affected: 51582 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-Sep-15_to_2021-Sep-19_233.0_51.5

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 4 days

Time span: September 12 2021 to September 15 2021

Statistics over entire affected area:

• Mean temperature anomaly: -5.1 °C
• Mean temperature: 1.3 °C
• Minimum temperature anomaly: -7.7 °C
• Minimum temperature: -1.4 °C

Event center: 56.0°N 297.5°E

Area affected: 74698 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-Sep-12_to_2021-Sep-15_297.5_56.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 4 days

Time span: September 11 2021 to September 14 2021

Statistics over entire affected area:

• Mean temperature anomaly: -4.2 °C
• Mean temperature: 2.4 °C
• Minimum temperature anomaly: -5.1 °C
• Minimum temperature: 1.2 °C

Event center: 58.0°N 290.0°E

Area affected: 78685 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-Sep-11_to_2021-Sep-14_290.0_58.0

Download data: JSON

Event type: Cold spell

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

• Canada

Duration: 12 days

Time span: September 09 2021 to September 20 2021

Statistics over entire affected area:

• Mean temperature anomaly: -4.1 °C
• Mean temperature: -7.0 °C
• Minimum temperature anomaly: -8.0 °C
• Minimum temperature: -11.8 °C

Event center: 72.0°N 255.5°E

Area affected: 105249 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-Sep-09_to_2021-Sep-20_255.5_72.0