Category: Extremes affecting United States

Heat wave occuring from April 23 2024 to April 25 2024 at 30.0°N 253.5°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 3 days

Time span: April 23 2024 to April 25 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 4.4 °C
  • Mean temperature: 24.2 °C
  • Maximum temperature anomaly: 6.1 °C
  • Maximum temperature: 27.4 °C

Event center: 30.0°N 253.5°E

Area affected: 71680 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-Apr-23_to_2024-Apr-25_253.5_30.0

Cold spell occuring from April 21 2024 to April 23 2024 at 27.0°N 260.5°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 3 days

Time span: April 21 2024 to April 23 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -6.3 °C
  • Mean temperature: 18.7 °C
  • Minimum temperature anomaly: -10.4 °C
  • Minimum temperature: 13.7 °C

Event center: 27.0°N 260.5°E

Area affected: 95874 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-Apr-21_to_2024-Apr-23_260.5_27.0

Cold spell occuring from April 19 2024 to April 23 2024 at 32.5°N 257.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 5 days

Time span: April 19 2024 to April 23 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -6.2 °C
  • Mean temperature: 13.1 °C
  • Minimum temperature anomaly: -11.4 °C
  • Minimum temperature: 7.8 °C

Event center: 32.5°N 257.0°E

Area affected: 603700 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-Apr-19_to_2024-Apr-23_257.0_32.5

Heat wave occuring from April 18 2024 to April 25 2024 at 39.5°N 251.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 8 days

Time span: April 18 2024 to April 25 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 6.1 °C
  • Mean temperature: 15.6 °C
  • Maximum temperature anomaly: 9.1 °C
  • Maximum temperature: 26.0 °C

Event center: 39.5°N 251.5°E

Area affected: 373002 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-Apr-18_to_2024-Apr-25_251.5_39.5

Heat wave occuring from April 17 2024 to April 22 2024 at 55.5°N 228.0°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: April 17 2024 to April 22 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 7.9 °C
  • Maximum temperature anomaly: 5.4 °C
  • Maximum temperature: 11.2 °C

Event center: 55.5°N 228.0°E

Area affected: 426526 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-Apr-17_to_2024-Apr-22_228.0_55.5

Heat wave occuring from April 16 2024 to April 19 2024 at 31.5°N 266.5°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 16 2024 to April 19 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 24.3 °C
  • Maximum temperature anomaly: 5.3 °C
  • Maximum temperature: 25.2 °C

Event center: 31.5°N 266.5°E

Area affected: 71366 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-Apr-16_to_2024-Apr-19_266.5_31.5

Cold spell occuring from April 16 2024 to April 21 2024 at 48.0°N 246.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 6 days

Time span: April 16 2024 to April 21 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -7.5 °C
  • Mean temperature: -2.1 °C
  • Minimum temperature anomaly: -11.8 °C
  • Minimum temperature: -12.4 °C

Event center: 48.0°N 246.5°E

Area affected: 966546 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-Apr-16_to_2024-Apr-21_246.5_48.0

Heat wave occuring from April 16 2024 to April 24 2024 at 60.5°N 235.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 9 days

Time span: April 16 2024 to April 24 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 7.8 °C
  • Mean temperature: 2.5 °C
  • Maximum temperature anomaly: 14.8 °C
  • Maximum temperature: 12.9 °C

Event center: 60.5°N 235.0°E

Area affected: 1242596 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-Apr-16_to_2024-Apr-24_235.0_60.5

Cold spell occuring from April 10 2024 to April 19 2024 at 24.0°N 188.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 10 days

Time span: April 10 2024 to April 19 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -1.8 °C
  • Mean temperature: 21.1 °C
  • Minimum temperature anomaly: -4.3 °C
  • Minimum temperature: 15.5 °C

Event center: 24.0°N 188.0°E

Area affected: 2733133 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-Apr-10_to_2024-Apr-19_188.0_24.0

Cold spell occuring from April 08 2024 to April 10 2024 at 70.5°N 200.5°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 3 days

Time span: April 08 2024 to April 10 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -7.4 °C
  • Mean temperature: -22.7 °C
  • Minimum temperature anomaly: -12.6 °C
  • Minimum temperature: -28.9 °C

Event center: 70.5°N 200.5°E

Area affected: 137567 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-Apr-08_to_2024-Apr-10_200.5_70.5