Category: Heat waves affecting United States

14 heat waves identified in United States since 2020

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

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

Heat wave occuring from September 25 2011 to September 29 2011 at 34.0°N 255.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 5 days

Time span: September 25 2011 to September 29 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 23.7 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 27.2 °C

Event center: 34.0°N 255.0°E

Area affected: 56110 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-25_to_2011-Sep-29_255.0_34.0

Heat wave occuring from September 23 2011 to September 28 2011 at 44.5°N 292.0°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: September 23 2011 to September 28 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 18.9 °C
  • Maximum temperature anomaly: 7.4 °C
  • Maximum temperature: 22.7 °C

Event center: 44.5°N 292.0°E

Area affected: 285827 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-23_to_2011-Sep-28_292.0_44.5

Heat wave occuring from September 22 2011 to September 29 2011 at 25.0°N 260.5°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: September 22 2011 to September 29 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 4.4 °C
  • Mean temperature: 28.7 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 33.8 °C

Event center: 25.0°N 260.5°E

Area affected: 699983 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-22_to_2011-Sep-29_260.5_25.0

Heat wave occuring from September 18 2011 to September 28 2011 at 59.5°N 270.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 11 days

Time span: September 18 2011 to September 28 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.5 °C
  • Mean temperature: 12.0 °C
  • Maximum temperature anomaly: 12.2 °C
  • Maximum temperature: 31.2 °C

Event center: 59.5°N 270.5°E

Area affected: 4902194 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-18_to_2011-Sep-28_270.5_59.5

Heat wave occuring from September 13 2011 to September 16 2011 at 66.0°N 224.0°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: September 13 2011 to September 16 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 10.1 °C
  • Maximum temperature anomaly: 9.3 °C
  • Maximum temperature: 15.0 °C

Event center: 66.0°N 224.0°E

Area affected: 367128 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-13_to_2011-Sep-16_224.0_66.0

Heat wave occuring from September 09 2011 to September 18 2011 at 25.0°N 260.5°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 10 days

Time span: September 09 2011 to September 18 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.5 °C
  • Mean temperature: 27.0 °C
  • Maximum temperature anomaly: 7.4 °C
  • Maximum temperature: 32.8 °C

Event center: 25.0°N 260.5°E

Area affected: 798205 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-09_to_2011-Sep-18_260.5_25.0

Heat wave occuring from September 05 2011 to September 14 2011 at 49.5°N 240.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 10 days

Time span: September 05 2011 to September 14 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 6.9 °C
  • Mean temperature: 19.0 °C
  • Maximum temperature anomaly: 12.1 °C
  • Maximum temperature: 28.4 °C

Event center: 49.5°N 240.5°E

Area affected: 3530661 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-05_to_2011-Sep-14_240.5_49.5

Heat wave occuring from August 26 2011 to September 08 2011 at 72.5°N 198.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 14 days

Time span: August 26 2011 to September 08 2011

Statistics over entire affected area:

  • Mean temperature anomaly: 3.0 °C
  • Mean temperature: 3.1 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 10.0 °C

Event center: 72.5°N 198.5°E

Area affected: 573043 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-Aug-26_to_2011-Sep-08_198.5_72.5