Category: Extremes affecting United States

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

Cold spell occuring from November 28 2011 to December 01 2011 at 28.5°N 271.5°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: November 28 2011 to December 01 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -5.6 °C
  • Mean temperature: 12.5 °C
  • Minimum temperature anomaly: -7.4 °C
  • Minimum temperature: 5.3 °C

Event center: 28.5°N 271.5°E

Area affected: 86092 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-28_to_2011-Dec-01_271.5_28.5

Heat wave occuring from November 25 2011 to November 30 2011 at 39.0°N 291.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 6 days

Time span: November 25 2011 to November 30 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 7.3 °C
  • Mean temperature: 10.3 °C
  • Maximum temperature anomaly: 13.5 °C
  • Maximum temperature: 21.6 °C

Event center: 39.0°N 291.5°E

Area affected: 784069 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-Nov-25_to_2011-Nov-30_291.5_39.0

Cold spell occuring from November 25 2011 to January 18 2012 at 10.0°N 223.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 55 days

Time span: November 25 2011 to January 18 2012

Statistics over entire affected area:

  • Mean temperature anomaly: -1.9 °C
  • Mean temperature: 19.6 °C
  • Minimum temperature anomaly: -21.1 °C
  • Minimum temperature: -20.6 °C

Event center: 10.0°N 223.0°E

Area affected: 17705138 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-25_to_2012-Jan-18_223.0_10.0

Heat wave occuring from November 24 2011 to November 26 2011 at 44.5°N 267.0°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: November 24 2011 to November 26 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 7.7 °C
  • Mean temperature: 6.6 °C
  • Maximum temperature anomaly: 12.1 °C
  • Maximum temperature: 10.8 °C

Event center: 44.5°N 267.0°E

Area affected: 131445 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-Nov-24_to_2011-Nov-26_267.0_44.5

Heat wave occuring from November 23 2011 to November 26 2011 at 49.0°N 264.5°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: November 23 2011 to November 26 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 8.8 °C
  • Mean temperature: 1.2 °C
  • Maximum temperature anomaly: 11.9 °C
  • Maximum temperature: 5.0 °C

Event center: 49.0°N 264.5°E

Area affected: 280736 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-Nov-23_to_2011-Nov-26_264.5_49.0

Heat wave occuring from November 19 2011 to November 25 2011 at 20.0°N 259.5°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 7 days

Time span: November 19 2011 to November 25 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 21.5 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 28.1 °C

Event center: 20.0°N 259.5°E

Area affected: 1775536 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-Nov-19_to_2011-Nov-25_259.5_20.0

Cold spell occuring from November 19 2011 to November 23 2011 at 34.5°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: 5 days

Time span: November 19 2011 to November 23 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -3.8 °C
  • Mean temperature: 9.4 °C
  • Minimum temperature anomaly: -7.7 °C
  • Minimum temperature: -0.8 °C

Event center: 34.5°N 241.0°E

Area affected: 63827 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-19_to_2011-Nov-23_241.0_34.5