Category: Heat waves affecting United States

Heat wave occuring from July 23 2021 to July 29 2021 at 44.0°N 266.0°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: July 23 2021 to July 29 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: 27.3 °C
  • Maximum temperature anomaly: 7.8 °C
  • Maximum temperature: 31.0 °C

Event center: 44.0°N 266.0°E

Area affected: 97655 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-Jul-23_to_2021-Jul-29_266.0_44.0

Heat wave occuring from July 15 2021 to August 02 2021 at 70.0°N 223.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 19 days

Time span: July 15 2021 to August 02 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 15.6 °C
  • Maximum temperature anomaly: 12.7 °C
  • Maximum temperature: 24.2 °C

Event center: 70.0°N 223.0°E

Area affected: 719595 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-Jul-15_to_2021-Aug-02_223.0_70.0

Heat wave occuring from June 23 2021 to October 12 2021 at 72.0°N 339.0°E

Download data: JSON

Event type: Heat wave

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

  • Albania
  • Algeria
  • Andorra
  • Bahamas
  • Belgium
  • Burkina Faso
  • Canada
  • Czechia
  • Denmark
  • Egypt
  • Finland
  • France
  • Germany
  • Greece
  • Greenland
  • Iceland
  • Ireland
  • Italy
  • Libya
  • Mali
  • Mauritania
  • Morocco
  • Netherlands
  • Niger
  • Norway
  • Poland
  • Portugal
  • Russian Federation
  • Spain
  • Svalbard and Jan Mayen
  • Sweden
  • Tunisia
  • Türkiye
  • United Kingdom
  • United States

Duration: 112 days

Time span: June 23 2021 to October 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 12.4 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 41.9 °C

Event center: 30.0°N 0.0°E

Area affected: 35897257 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-Jun-23_to_2021-Oct-12_339.0_72.0

Heat wave occuring from June 17 2021 to July 05 2021 at 56.0°N 192.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 19 days

Time span: June 17 2021 to July 05 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 8.9 °C
  • Maximum temperature anomaly: 5.3 °C
  • Maximum temperature: 13.9 °C

Event center: 56.0°N 192.5°E

Area affected: 428666 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-Jun-17_to_2021-Jul-05_192.5_56.0

Heat wave occuring from June 14 2021 to June 20 2021 at 67.5°N 220.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 7 days

Time span: June 14 2021 to June 20 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 17.1 °C
  • Maximum temperature anomaly: 10.7 °C
  • Maximum temperature: 24.2 °C

Event center: 67.5°N 220.0°E

Area affected: 225959 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-Jun-14_to_2021-Jun-20_220.0_67.5

Heat wave occuring from June 12 2021 to June 15 2021 at 33.5°N 270.5°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: June 12 2021 to June 15 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.0 °C
  • Mean temperature: 28.9 °C
  • Maximum temperature anomaly: 4.2 °C
  • Maximum temperature: 29.8 °C

Event center: 33.5°N 270.5°E

Area affected: 50926 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-Jun-12_to_2021-Jun-15_270.5_33.5

Heat wave occuring from June 04 2021 to September 27 2021 at 76.0°N 151.5°E

Download data: JSON

Event type: Heat wave

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

  • Azerbaijan
  • China
  • Finland
  • Japan
  • Kazakhstan
  • Korea, Democratic People’s Republic of
  • Korea, Republic of
  • Northern Mariana Islands
  • Norway
  • Russian Federation
  • Svalbard and Jan Mayen
  • Turkmenistan
  • Ukraine
  • United States
  • Uzbekistan

Duration: 116 days

Time span: June 04 2021 to September 27 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 19.1 °C
  • Maximum temperature anomaly: 19.5 °C
  • Maximum temperature: 34.2 °C

Event center: 76.0°N 151.5°E

Area affected: 39762494 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-Jun-04_to_2021-Sep-27_151.5_76.0

Heat wave occuring from June 01 2021 to June 22 2021 at 53.5°N 176.0°E

Download data: JSON

Event type: Heat wave

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

  • Russian Federation
  • United States

Duration: 22 days

Time span: June 01 2021 to June 22 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 1.5 °C
  • Mean temperature: 6.9 °C
  • Maximum temperature anomaly: 8.0 °C
  • Maximum temperature: 14.3 °C

Event center: 53.5°N 176.0°E

Area affected: 1194358 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-Jun-01_to_2021-Jun-22_176.0_53.5

Heat wave occuring from June 01 2021 to August 09 2021 at 40.5°N 218.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 70 days

Time span: June 01 2021 to August 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.1 °C
  • Mean temperature: 20.2 °C
  • Maximum temperature anomaly: 12.1 °C
  • Maximum temperature: 33.7 °C

Event center: 40.5°N 218.5°E

Area affected: 15500380 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-Jun-01_to_2021-Aug-09_218.5_40.5

Heat wave occuring from May 29 2021 to July 20 2021 at 49.0°N 241.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Mexico
  • Portugal
  • United States

Duration: 53 days

Time span: May 29 2021 to July 20 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: 23.5 °C
  • Maximum temperature anomaly: 19.1 °C
  • Maximum temperature: 43.4 °C

Event center: 49.0°N 241.5°E

Area affected: 21062109 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-May-29_to_2021-Jul-20_241.5_49.0