Category: Extremes affecting United States

Cold spell occuring from April 08 2011 to April 16 2011 at 69.0°N 232.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 9 days

Time span: April 08 2011 to April 16 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -8.9 °C
  • Mean temperature: -22.3 °C
  • Minimum temperature anomaly: -16.1 °C
  • Minimum temperature: -33.2 °C

Event center: 69.0°N 232.0°E

Area affected: 1508156 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-Apr-08_to_2011-Apr-16_232.0_69.0

Cold spell occuring from April 07 2011 to April 12 2011 at 35.5°N 247.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 6 days

Time span: April 07 2011 to April 12 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -8.2 °C
  • Mean temperature: 4.0 °C
  • Minimum temperature anomaly: -16.4 °C
  • Minimum temperature: -11.4 °C

Event center: 35.5°N 247.0°E

Area affected: 645104 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-Apr-07_to_2011-Apr-12_247.0_35.5

Heat wave occuring from April 05 2011 to April 16 2011 at 21.5°N 258.5°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 12 days

Time span: April 05 2011 to April 16 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.9 °C
  • Mean temperature: 25.0 °C
  • Maximum temperature anomaly: 12.2 °C
  • Maximum temperature: 33.1 °C

Event center: 21.5°N 258.5°E

Area affected: 2551495 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-Apr-05_to_2011-Apr-16_258.5_21.5

Cold spell occuring from April 03 2011 to May 04 2011 at 79.5°N 288.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Greenland
  • United States

Duration: 32 days

Time span: April 03 2011 to May 04 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -7.6 °C
  • Mean temperature: -24.4 °C
  • Minimum temperature anomaly: -19.8 °C
  • Minimum temperature: -46.6 °C

Event center: 79.5°N 288.0°E

Area affected: 8970682 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-Apr-03_to_2011-May-04_288.0_79.5

Heat wave occuring from March 31 2011 to April 02 2011 at 43.5°N 250.5°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: March 31 2011 to April 02 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 4.7 °C
  • Maximum temperature anomaly: 7.1 °C
  • Maximum temperature: 13.7 °C

Event center: 43.5°N 250.5°E

Area affected: 77927 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-Mar-31_to_2011-Apr-02_250.5_43.5

Heat wave occuring from March 30 2011 to April 06 2011 at 28.5°N 252.0°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 8 days

Time span: March 30 2011 to April 06 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.2 °C
  • Mean temperature: 21.1 °C
  • Maximum temperature anomaly: 11.9 °C
  • Maximum temperature: 32.4 °C

Event center: 28.5°N 252.0°E

Area affected: 1708725 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-Mar-30_to_2011-Apr-06_252.0_28.5

Heat wave occuring from March 28 2011 to April 07 2011 at 20.5°N 284.5°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • Cuba
  • Dominican Republic
  • Haiti
  • United States

Duration: 11 days

Time span: March 28 2011 to April 07 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 25.8 °C
  • Maximum temperature anomaly: 4.0 °C
  • Maximum temperature: 29.5 °C

Event center: 20.5°N 284.5°E

Area affected: 564854 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-Mar-28_to_2011-Apr-07_284.5_20.5

Cold spell occuring from March 27 2011 to March 30 2011 at 37.5°N 260.0°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: March 27 2011 to March 30 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -7.9 °C
  • Mean temperature: 3.1 °C
  • Minimum temperature anomaly: -10.3 °C
  • Minimum temperature: -0.8 °C

Event center: 37.5°N 260.0°E

Area affected: 177417 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-Mar-27_to_2011-Mar-30_260.0_37.5

Cold spell occuring from March 25 2011 to March 28 2011 at 37.0°N 269.0°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: March 25 2011 to March 28 2011

Statistics over entire affected area:

  • Mean temperature anomaly: -8.0 °C
  • Mean temperature: 2.4 °C
  • Minimum temperature anomaly: -9.7 °C
  • Minimum temperature: -0.0 °C

Event center: 37.0°N 269.0°E

Area affected: 83320 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-Mar-25_to_2011-Mar-28_269.0_37.0

Heat wave occuring from March 22 2011 to March 24 2011 at 34.0°N 280.5°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: March 22 2011 to March 24 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.8 °C
  • Mean temperature: 21.9 °C
  • Maximum temperature anomaly: 10.4 °C
  • Maximum temperature: 24.3 °C

Event center: 34.0°N 280.5°E

Area affected: 183874 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-Mar-22_to_2011-Mar-24_280.5_34.0