Category: Extremes affecting United States

Heat wave occuring from September 30 2024 to October 08 2024 at 30.5°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: 9 days

Time span: September 30 2024 to October 08 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 27.5 °C
  • Maximum temperature anomaly: 5.5 °C
  • Maximum temperature: 29.0 °C

Event center: 30.5°N 266.0°E

Area affected: 77542 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_2024-Sep-30_to_2024-Oct-08_266.0_30.5

Heat wave occuring from September 20 2024 to September 25 2024 at 34.5°N 275.5°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: September 20 2024 to September 25 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 25.9 °C
  • Maximum temperature anomaly: 7.0 °C
  • Maximum temperature: 28.7 °C

Event center: 34.5°N 275.5°E

Area affected: 150643 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_2024-Sep-20_to_2024-Sep-25_275.5_34.5

Heat wave occuring from September 18 2024 to September 23 2024 at 39.0°N 278.0°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: September 18 2024 to September 23 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 23.7 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 25.5 °C

Event center: 39.0°N 278.0°E

Area affected: 57851 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_2024-Sep-18_to_2024-Sep-23_278.0_39.0

Cold spell occuring from September 13 2024 to October 12 2024 at 24.0°N 249.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 30 days

Time span: September 13 2024 to October 12 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -3.1 °C
  • Mean temperature: 21.2 °C
  • Minimum temperature anomaly: -10.1 °C
  • Minimum temperature: 4.0 °C

Event center: 24.0°N 249.0°E

Area affected: 1040426 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_2024-Sep-13_to_2024-Oct-12_249.0_24.0

Cold spell occuring from September 07 2024 to September 10 2024 at 38.0°N 272.0°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: September 07 2024 to September 10 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -5.9 °C
  • Mean temperature: 16.1 °C
  • Minimum temperature anomaly: -8.7 °C
  • Minimum temperature: 11.8 °C

Event center: 38.0°N 272.0°E

Area affected: 378112 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_2024-Sep-07_to_2024-Sep-10_272.0_38.0

Cold spell occuring from September 06 2024 to September 12 2024 at 35.5°N 284.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 7 days

Time span: September 06 2024 to September 12 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -3.8 °C
  • Mean temperature: 19.8 °C
  • Minimum temperature anomaly: -6.7 °C
  • Minimum temperature: 11.7 °C

Event center: 35.5°N 284.0°E

Area affected: 270267 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_2024-Sep-06_to_2024-Sep-12_284.0_35.5

Cold spell occuring from September 06 2024 to September 12 2024 at 32.5°N 266.5°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 7 days

Time span: September 06 2024 to September 12 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 22.3 °C
  • Minimum temperature anomaly: -6.2 °C
  • Minimum temperature: 19.4 °C

Event center: 32.5°N 266.5°E

Area affected: 117711 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_2024-Sep-06_to_2024-Sep-12_266.5_32.5

Heat wave occuring from September 05 2024 to September 07 2024 at 64.5°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: 3 days

Time span: September 05 2024 to September 07 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 11.7 °C
  • Maximum temperature anomaly: 4.9 °C
  • Maximum temperature: 14.8 °C

Event center: 64.5°N 212.5°E

Area affected: 87472 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_2024-Sep-05_to_2024-Sep-07_212.5_64.5

Heat wave occuring from September 03 2024 to September 09 2024 at 73.0°N 222.5°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: September 03 2024 to September 09 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 3.0 °C
  • Mean temperature: 2.6 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 8.5 °C

Event center: 73.0°N 222.5°E

Area affected: 235532 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_2024-Sep-03_to_2024-Sep-09_222.5_73.0

Cold spell occuring from September 03 2024 to September 06 2024 at 37.5°N 281.0°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: September 03 2024 to September 06 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 18.3 °C
  • Minimum temperature anomaly: -6.3 °C
  • Minimum temperature: 13.0 °C

Event center: 37.5°N 281.0°E

Area affected: 178163 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_2024-Sep-03_to_2024-Sep-06_281.0_37.5