Category: Extremes affecting Canada

Cold spell occuring from August 01 2011 to August 16 2011 at 45.5°N 300.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada

Duration: 16 days

Time span: August 01 2011 to August 16 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -3.4 °C
  • Mean temperature: 16.1 °C
  • Minimum temperature anomaly: -7.5 °C
  • Minimum temperature: 8.6 °C

Event center: 45.5°N 300.0°E

Area affected: 2204771 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_2011-Aug-01_to_2011-Aug-16_300.0_45.5

Heat wave occuring from July 31 2011 to August 08 2011 at 82.5°N 293.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland

Duration: 9 days

Time span: July 31 2011 to August 08 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 7.9 °C
  • Maximum temperature anomaly: 9.8 °C
  • Maximum temperature: 16.9 °C

Event center: 82.5°N 293.5°E

Area affected: 103932 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_2011-Jul-31_to_2011-Aug-08_293.5_82.5

Heat wave occuring from July 31 2011 to August 17 2011 at 58.5°N 270.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 18 days

Time span: July 31 2011 to August 17 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 4.6 °C
  • Mean temperature: 11.7 °C
  • Maximum temperature anomaly: 7.8 °C
  • Maximum temperature: 18.8 °C

Event center: 58.5°N 270.0°E

Area affected: 259058 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_2011-Jul-31_to_2011-Aug-17_270.0_58.5

Cold spell occuring from July 29 2011 to August 01 2011 at 55.5°N 236.5°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: July 29 2011 to August 01 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 10.6 °C
  • Minimum temperature anomaly: -5.7 °C
  • Minimum temperature: 8.3 °C

Event center: 55.5°N 236.5°E

Area affected: 69734 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_2011-Jul-29_to_2011-Aug-01_236.5_55.5

Heat wave occuring from July 26 2011 to August 01 2011 at 61.0°N 294.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 7 days

Time span: July 26 2011 to August 01 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 2.6 °C
  • Mean temperature: 6.2 °C
  • Maximum temperature anomaly: 6.5 °C
  • Maximum temperature: 11.7 °C

Event center: 61.0°N 294.0°E

Area affected: 86046 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_2011-Jul-26_to_2011-Aug-01_294.0_61.0

Cold spell occuring from July 26 2011 to August 01 2011 at 54.5°N 231.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 7 days

Time span: July 26 2011 to August 01 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: 9.5 °C
  • Minimum temperature anomaly: -4.9 °C
  • Minimum temperature: 5.9 °C

Event center: 54.5°N 231.5°E

Area affected: 83985 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_2011-Jul-26_to_2011-Aug-01_231.5_54.5

Heat wave occuring from July 22 2011 to July 31 2011 at 59.5°N 270.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada

Duration: 10 days

Time span: July 22 2011 to July 31 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.2 °C
  • Mean temperature: 14.0 °C
  • Maximum temperature anomaly: 8.2 °C
  • Maximum temperature: 21.5 °C

Event center: 59.5°N 270.0°E

Area affected: 496401 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_2011-Jul-22_to_2011-Jul-31_270.0_59.5

Cold spell occuring from July 21 2011 to July 24 2011 at 53.5°N 256.5°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: July 21 2011 to July 24 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -4.9 °C
  • Mean temperature: 13.6 °C
  • Minimum temperature anomaly: -7.1 °C
  • Minimum temperature: 10.4 °C

Event center: 53.5°N 256.5°E

Area affected: 205825 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_2011-Jul-21_to_2011-Jul-24_256.5_53.5

Cold spell occuring from July 21 2011 to July 24 2011 at 51.5°N 247.5°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: July 21 2011 to July 24 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -5.0 °C
  • Mean temperature: 13.4 °C
  • Minimum temperature anomaly: -8.7 °C
  • Minimum temperature: 9.3 °C

Event center: 51.5°N 247.5°E

Area affected: 65606 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_2011-Jul-21_to_2011-Jul-24_247.5_51.5

Cold spell occuring from July 19 2011 to July 23 2011 at 54.0°N 240.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 5 days

Time span: July 19 2011 to July 23 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -5.2 °C
  • Mean temperature: 10.5 °C
  • Minimum temperature anomaly: -8.7 °C
  • Minimum temperature: 2.3 °C

Event center: 54.0°N 240.5°E

Area affected: 647300 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_2011-Jul-19_to_2011-Jul-23_240.5_54.0