Category: Extremes affecting United States

Cold spell occuring from November 12 2011 to December 03 2011 at 58.0°N 214.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 22 days

Time span: November 12 2011 to December 03 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -9.4 °C
  • Mean temperature: -17.6 °C
  • Minimum temperature anomaly: -23.1 °C
  • Minimum temperature: -41.9 °C

Event center: 58.0°N 214.0°E

Area affected: 8213897 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-Nov-12_to_2011-Dec-03_214.0_58.0

Cold spell occuring from October 27 2011 to November 01 2011 at 41.5°N 285.5°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 6 days

Time span: October 27 2011 to November 01 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -6.7 °C
  • Mean temperature: 3.5 °C
  • Minimum temperature anomaly: -11.2 °C
  • Minimum temperature: -2.2 °C

Event center: 41.5°N 285.5°E

Area affected: 508669 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-Oct-27_to_2011-Nov-01_285.5_41.5

Heat wave occuring from October 16 2011 to October 22 2011 at 72.0°N 218.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 7 days

Time span: October 16 2011 to October 22 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.6 °C
  • Mean temperature: -1.3 °C
  • Maximum temperature anomaly: 7.0 °C
  • Maximum temperature: -0.2 °C

Event center: 72.0°N 218.0°E

Area affected: 90551 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-Oct-16_to_2011-Oct-22_218.0_72.0

Heat wave occuring from October 14 2011 to October 20 2011 at 67.0°N 222.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 7 days

Time span: October 14 2011 to October 20 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.7 °C
  • Mean temperature: -1.7 °C
  • Maximum temperature anomaly: 10.0 °C
  • Maximum temperature: 2.6 °C

Event center: 67.0°N 222.5°E

Area affected: 369064 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-Oct-14_to_2011-Oct-20_222.5_67.0

Heat wave occuring from October 14 2011 to October 17 2011 at 37.5°N 249.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 4 days

Time span: October 14 2011 to October 17 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 4.8 °C
  • Mean temperature: 18.2 °C
  • Maximum temperature anomaly: 6.2 °C
  • Maximum temperature: 20.9 °C

Event center: 37.5°N 249.0°E

Area affected: 72051 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-Oct-14_to_2011-Oct-17_249.0_37.5

Heat wave occuring from October 12 2011 to October 27 2011 at 27.5°N 253.0°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 16 days

Time span: October 12 2011 to October 27 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.5 °C
  • Mean temperature: 22.1 °C
  • Maximum temperature anomaly: 6.5 °C
  • Maximum temperature: 31.7 °C

Event center: 27.5°N 253.0°E

Area affected: 243584 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-Oct-12_to_2011-Oct-27_253.0_27.5

Cold spell occuring from October 03 2011 to October 11 2011 at 37.5°N 241.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 9 days

Time span: October 03 2011 to October 11 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -6.2 °C
  • Mean temperature: 11.0 °C
  • Minimum temperature anomaly: -14.5 °C
  • Minimum temperature: -9.4 °C

Event center: 37.5°N 241.0°E

Area affected: 1511576 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-Oct-03_to_2011-Oct-11_241.0_37.5

Cold spell occuring from October 01 2011 to October 04 2011 at 33.5°N 273.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 4 days

Time span: October 01 2011 to October 04 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -6.7 °C
  • Mean temperature: 11.8 °C
  • Minimum temperature anomaly: -9.7 °C
  • Minimum temperature: 2.1 °C

Event center: 33.5°N 273.0°E

Area affected: 638645 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-Oct-01_to_2011-Oct-04_273.0_33.5

Cold spell occuring from October 01 2011 to October 05 2011 at 33.0°N 283.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 5 days

Time span: October 01 2011 to October 05 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -4.5 °C
  • Mean temperature: 18.4 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 11.7 °C

Event center: 33.0°N 283.0°E

Area affected: 582258 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-Oct-01_to_2011-Oct-05_283.0_33.0

Heat wave occuring from September 28 2011 to October 18 2011 at 55.5°N 276.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 21 days

Time span: September 28 2011 to October 18 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 8.1 °C
  • Mean temperature: 15.0 °C
  • Maximum temperature anomaly: 16.9 °C
  • Maximum temperature: 26.7 °C

Event center: 55.5°N 276.0°E

Area affected: 5627417 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-Sep-28_to_2011-Oct-18_276.0_55.5