Category: Heat waves affecting United States

Heat wave occuring from October 31 2021 to November 04 2021 at 62.0°N 212.5°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: October 31 2021 to November 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.9 °C
  • Mean temperature: -2.1 °C
  • Maximum temperature anomaly: 12.7 °C
  • Maximum temperature: 8.1 °C

Event center: 62.0°N 212.5°E

Area affected: 164611 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_2021-Oct-31_to_2021-Nov-04_212.5_62.0

Heat wave occuring from October 20 2021 to October 22 2021 at 40.0°N 290.0°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: October 20 2021 to October 22 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 18.7 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 21.9 °C

Event center: 40.0°N 290.0°E

Area affected: 148372 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_2021-Oct-20_to_2021-Oct-22_290.0_40.0

Heat wave occuring from October 19 2021 to November 01 2021 at 20.5°N 283.0°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • Belize
  • Colombia
  • Costa Rica
  • Cuba
  • Dominican Republic
  • El Salvador
  • Guatemala
  • Haiti
  • Honduras
  • Jamaica
  • Mexico
  • Nicaragua
  • Panama
  • Puerto Rico
  • Turks and Caicos Islands
  • United States

Duration: 14 days

Time span: October 19 2021 to November 01 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 27.2 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 31.4 °C

Event center: 20.5°N 283.0°E

Area affected: 4891975 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_2021-Oct-19_to_2021-Nov-01_283.0_20.5

Heat wave occuring from October 05 2021 to October 09 2021 at 25.0°N 282.0°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • United States

Duration: 5 days

Time span: October 05 2021 to October 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 28.1 °C
  • Maximum temperature anomaly: 1.8 °C
  • Maximum temperature: 29.0 °C

Event center: 25.0°N 282.0°E

Area affected: 97778 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_2021-Oct-05_to_2021-Oct-09_282.0_25.0

Heat wave occuring from September 19 2021 to October 01 2021 at 42.5°N 294.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 13 days

Time span: September 19 2021 to October 01 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: 20.9 °C
  • Maximum temperature anomaly: 7.4 °C
  • Maximum temperature: 27.4 °C

Event center: 42.5°N 294.5°E

Area affected: 966445 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_2021-Sep-19_to_2021-Oct-01_294.5_42.5

Heat wave occuring from September 17 2021 to September 21 2021 at 27.5°N 258.0°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 5 days

Time span: September 17 2021 to September 21 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 30.3 °C
  • Maximum temperature anomaly: 6.4 °C
  • Maximum temperature: 33.4 °C

Event center: 27.5°N 258.0°E

Area affected: 153185 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_2021-Sep-17_to_2021-Sep-21_258.0_27.5

Heat wave occuring from September 13 2021 to September 17 2021 at 53.5°N 186.0°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 13 2021 to September 17 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 10.6 °C
  • Maximum temperature anomaly: 2.1 °C
  • Maximum temperature: 11.5 °C

Event center: 53.5°N 186.0°E

Area affected: 101964 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_2021-Sep-13_to_2021-Sep-17_186.0_53.5

Heat wave occuring from September 12 2021 to November 18 2021 at 57.5°N 278.5°E

Download data: JSON

Event type: Heat wave

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

  • Belize
  • Canada
  • Colombia
  • El Salvador
  • Greenland
  • Guatemala
  • Honduras
  • Mexico
  • Nicaragua
  • United States

Duration: 68 days

Time span: September 12 2021 to November 18 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.1 °C
  • Mean temperature: 2.7 °C
  • Maximum temperature anomaly: 20.3 °C
  • Maximum temperature: 32.0 °C

Event center: 57.5°N 278.5°E

Area affected: 24407429 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_2021-Sep-12_to_2021-Nov-18_278.5_57.5

Heat wave occuring from September 12 2021 to September 21 2021 at 40.5°N 289.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 10 days

Time span: September 12 2021 to September 21 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.2 °C
  • Mean temperature: 24.7 °C
  • Maximum temperature anomaly: 6.6 °C
  • Maximum temperature: 27.3 °C

Event center: 40.5°N 289.5°E

Area affected: 955062 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_2021-Sep-12_to_2021-Sep-21_289.5_40.5

Heat wave occuring from September 12 2021 to September 15 2021 at 41.0°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: 4 days

Time span: September 12 2021 to September 15 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 6.1 °C
  • Mean temperature: 25.0 °C
  • Maximum temperature anomaly: 8.8 °C
  • Maximum temperature: 27.4 °C

Event center: 41.0°N 276.0°E

Area affected: 153499 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_2021-Sep-12_to_2021-Sep-15_276.0_41.0