Category: Heat waves affecting United States

Heat wave occuring from April 20 2023 to April 23 2023 at 38.5°N 285.5°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: April 20 2023 to April 23 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 19.8 °C
  • Maximum temperature anomaly: 6.5 °C
  • Maximum temperature: 24.1 °C

Event center: 38.5°N 285.5°E

Area affected: 104538 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_2023-Apr-20_to_2023-Apr-23_285.5_38.5

Heat wave occuring from April 18 2023 to June 21 2023 at 52.0°N 242.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland
  • United States

Duration: 65 days

Time span: April 18 2023 to June 21 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 7.8 °C
  • Mean temperature: 7.8 °C
  • Maximum temperature anomaly: 21.3 °C
  • Maximum temperature: 32.6 °C

Event center: 52.0°N 242.5°E

Area affected: 15336797 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_2023-Apr-18_to_2023-Jun-21_242.5_52.0

Heat wave occuring from April 12 2023 to April 17 2023 at 18.0°N 282.5°E

Download data: JSON

Event type: Heat wave

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

  • Cuba
  • Jamaica
  • Mexico
  • United States

Duration: 6 days

Time span: April 12 2023 to April 17 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 1.4 °C
  • Mean temperature: 26.8 °C
  • Maximum temperature anomaly: 2.7 °C
  • Maximum temperature: 28.5 °C

Event center: 18.0°N 282.5°E

Area affected: 726974 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_2023-Apr-12_to_2023-Apr-17_282.5_18.0

Heat wave occuring from April 10 2023 to April 12 2023 at 43.0°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: April 10 2023 to April 12 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 6.6 °C
  • Mean temperature: 5.6 °C
  • Maximum temperature anomaly: 9.9 °C
  • Maximum temperature: 9.1 °C

Event center: 43.0°N 250.5°E

Area affected: 53434 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_2023-Apr-10_to_2023-Apr-12_250.5_43.0

Heat wave occuring from April 09 2023 to April 13 2023 at 45.5°N 256.5°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: April 09 2023 to April 13 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 10.0 °C
  • Mean temperature: 15.1 °C
  • Maximum temperature anomaly: 14.1 °C
  • Maximum temperature: 19.6 °C

Event center: 45.5°N 256.5°E

Area affected: 73771 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_2023-Apr-09_to_2023-Apr-13_256.5_45.5

Heat wave occuring from April 08 2023 to April 20 2023 at 45.0°N 272.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Mexico
  • United States

Duration: 13 days

Time span: April 08 2023 to April 20 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.5 °C
  • Mean temperature: 11.9 °C
  • Maximum temperature anomaly: 18.3 °C
  • Maximum temperature: 29.4 °C

Event center: 45.0°N 272.5°E

Area affected: 4905987 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_2023-Apr-08_to_2023-Apr-20_272.5_45.0

Heat wave occuring from March 26 2023 to March 31 2023 at 71.5°N 207.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 6 days

Time span: March 26 2023 to March 31 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.6 °C
  • Mean temperature: -11.1 °C
  • Maximum temperature anomaly: 19.1 °C
  • Maximum temperature: -2.6 °C

Event center: 71.5°N 207.5°E

Area affected: 71747 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_2023-Mar-26_to_2023-Mar-31_207.5_71.5

Heat wave occuring from March 22 2023 to April 09 2023 at 25.5°N 268.5°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • Cuba
  • Guatemala
  • Mexico
  • United States

Duration: 19 days

Time span: March 22 2023 to April 09 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 3.3 °C
  • Mean temperature: 24.2 °C
  • Maximum temperature anomaly: 12.5 °C
  • Maximum temperature: 32.9 °C

Event center: 25.5°N 268.5°E

Area affected: 5576119 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_2023-Mar-22_to_2023-Apr-09_268.5_25.5

Heat wave occuring from March 16 2023 to March 23 2023 at 58.0°N 226.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 8 days

Time span: March 16 2023 to March 23 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 6.4 °C
  • Mean temperature: 0.4 °C
  • Maximum temperature anomaly: 12.2 °C
  • Maximum temperature: 6.2 °C

Event center: 58.0°N 226.5°E

Area affected: 207949 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_2023-Mar-16_to_2023-Mar-23_226.5_58.0

Heat wave occuring from March 11 2023 to March 14 2023 at 23.5°N 281.5°E

Download data: JSON

Event type: Heat wave

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

  • Cuba
  • United States

Duration: 4 days

Time span: March 11 2023 to March 14 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 25.1 °C
  • Maximum temperature anomaly: 4.4 °C
  • Maximum temperature: 25.9 °C

Event center: 23.5°N 281.5°E

Area affected: 64900 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_2023-Mar-11_to_2023-Mar-14_281.5_23.5