Category: Extremes affecting United States

Heat wave occuring from December 29 2011 to December 31 2011 at 40.5°N 253.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 3 days

Time span: December 29 2011 to December 31 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 7.1 °C
  • Mean temperature: -2.0 °C
  • Maximum temperature anomaly: 10.9 °C
  • Maximum temperature: 5.7 °C

Event center: 40.5°N 253.0°E

Area affected: 62240 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-Dec-29_to_2011-Dec-31_253.0_40.5

Heat wave occuring from December 24 2011 to January 07 2012 at 37.0°N 241.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Mexico
  • United States

Duration: 15 days

Time span: December 24 2011 to January 07 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 8.7 °C
  • Mean temperature: 5.3 °C
  • Maximum temperature anomaly: 15.5 °C
  • Maximum temperature: 24.2 °C

Event center: 37.0°N 241.5°E

Area affected: 3249233 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-Dec-24_to_2012-Jan-07_241.5_37.0

Cold spell occuring from December 23 2011 to February 11 2012 at 56.0°N 211.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Russian Federation
  • United States

Duration: 51 days

Time span: December 23 2011 to February 11 2012

Statistics over entire affected area:

  • Mean temperature anomaly: -9.7 °C
  • Mean temperature: -16.6 °C
  • Minimum temperature anomaly: -32.1 °C
  • Minimum temperature: -56.7 °C

Event center: 56.0°N 211.0°E

Area affected: 16067168 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-Dec-23_to_2012-Feb-11_211.0_56.0

Heat wave occuring from December 20 2011 to December 23 2011 at 38.5°N 281.5°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: December 20 2011 to December 23 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 7.5 °C
  • Mean temperature: 15.7 °C
  • Maximum temperature anomaly: 11.7 °C
  • Maximum temperature: 23.7 °C

Event center: 38.5°N 281.5°E

Area affected: 468317 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-Dec-20_to_2011-Dec-23_281.5_38.5

Heat wave occuring from December 09 2011 to December 12 2011 at 69.0°N 208.0°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: December 09 2011 to December 12 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 14.1 °C
  • Mean temperature: -10.4 °C
  • Maximum temperature anomaly: 18.7 °C
  • Maximum temperature: -5.3 °C

Event center: 69.0°N 208.0°E

Area affected: 62784 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-Dec-09_to_2011-Dec-12_208.0_69.0

Heat wave occuring from December 08 2011 to December 14 2011 at 64.0°N 205.0°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: December 08 2011 to December 14 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 12.6 °C
  • Mean temperature: -6.5 °C
  • Maximum temperature anomaly: 17.0 °C
  • Maximum temperature: -1.0 °C

Event center: 64.0°N 205.0°E

Area affected: 170995 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-Dec-08_to_2011-Dec-14_205.0_64.0

Heat wave occuring from December 05 2011 to December 08 2011 at 44.5°N 295.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 4 days

Time span: December 05 2011 to December 08 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.6 °C
  • Mean temperature: 12.1 °C
  • Maximum temperature anomaly: 12.2 °C
  • Maximum temperature: 21.3 °C

Event center: 44.5°N 295.0°E

Area affected: 622420 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-Dec-05_to_2011-Dec-08_295.0_44.5

Cold spell occuring from December 04 2011 to December 07 2011 at 40.0°N 250.0°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: December 04 2011 to December 07 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -10.6 °C
  • Mean temperature: -15.4 °C
  • Minimum temperature anomaly: -17.5 °C
  • Minimum temperature: -22.3 °C

Event center: 40.0°N 250.0°E

Area affected: 137664 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-Dec-04_to_2011-Dec-07_250.0_40.0

Heat wave occuring from December 01 2011 to December 05 2011 at 61.5°N 219.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 5 days

Time span: December 01 2011 to December 05 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 11.1 °C
  • Mean temperature: -4.8 °C
  • Maximum temperature anomaly: 18.5 °C
  • Maximum temperature: 3.8 °C

Event center: 61.5°N 219.5°E

Area affected: 100363 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-Dec-01_to_2011-Dec-05_219.5_61.5

Heat wave occuring from December 01 2011 to December 05 2011 at 59.0°N 227.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 5 days

Time span: December 01 2011 to December 05 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 11.1 °C
  • Mean temperature: -2.7 °C
  • Maximum temperature anomaly: 16.5 °C
  • Maximum temperature: 2.8 °C

Event center: 59.0°N 227.5°E

Area affected: 108580 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-Dec-01_to_2011-Dec-05_227.5_59.0