Category: Extremes affecting United States

Heat wave occuring from May 19 2023 to May 24 2023 at 23.5°N 280.0°E

Download data: JSON

Event type: Heat wave

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

  • Cuba
  • United States

Duration: 6 days

Time span: May 19 2023 to May 24 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 27.4 °C
  • Maximum temperature anomaly: 1.9 °C
  • Maximum temperature: 28.5 °C

Event center: 23.5°N 280.0°E

Area affected: 84784 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-May-19_to_2023-May-24_280.0_23.5

Cold spell occuring from May 14 2023 to May 25 2023 at 62.0°N 184.5°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation
  • United States

Duration: 12 days

Time span: May 14 2023 to May 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.9 °C
  • Mean temperature: -4.4 °C
  • Minimum temperature anomaly: -9.2 °C
  • Minimum temperature: -14.1 °C

Event center: 62.0°N 184.5°E

Area affected: 1150442 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_2023-May-14_to_2023-May-25_184.5_62.0

Heat wave occuring from May 12 2023 to May 16 2023 at 29.5°N 268.0°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: May 12 2023 to May 16 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.1 °C
  • Mean temperature: 26.7 °C
  • Maximum temperature anomaly: 6.3 °C
  • Maximum temperature: 28.6 °C

Event center: 29.5°N 268.0°E

Area affected: 187318 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-May-12_to_2023-May-16_268.0_29.5

Heat wave occuring from May 11 2023 to May 16 2023 at 43.0°N 289.5°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: May 11 2023 to May 16 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 13.6 °C
  • Maximum temperature anomaly: 8.3 °C
  • Maximum temperature: 21.8 °C

Event center: 43.0°N 289.5°E

Area affected: 174493 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-May-11_to_2023-May-16_289.5_43.0

Heat wave occuring from May 06 2023 to May 10 2023 at 38.0°N 263.5°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: May 06 2023 to May 10 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 5.9 °C
  • Mean temperature: 24.8 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 27.7 °C

Event center: 38.0°N 263.5°E

Area affected: 267279 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-May-06_to_2023-May-10_263.5_38.0

Cold spell occuring from May 01 2023 to May 04 2023 at 39.0°N 280.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 4 days

Time span: May 01 2023 to May 04 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -7.0 °C
  • Mean temperature: 6.5 °C
  • Minimum temperature anomaly: -9.9 °C
  • Minimum temperature: 2.1 °C

Event center: 39.0°N 280.0°E

Area affected: 431629 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_2023-May-01_to_2023-May-04_280.0_39.0

Cold spell occuring from April 26 2023 to May 01 2023 at 56.0°N 174.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 6 days

Time span: April 26 2023 to May 01 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -1.9 °C
  • Mean temperature: 0.5 °C
  • Minimum temperature anomaly: -3.3 °C
  • Minimum temperature: -2.3 °C

Event center: 56.0°N 174.0°E

Area affected: 373138 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_2023-Apr-26_to_2023-May-01_174.0_56.0

Heat wave occuring from April 26 2023 to April 30 2023 at 35.0°N 241.5°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 26 2023 to April 30 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 6.3 °C
  • Mean temperature: 22.9 °C
  • Maximum temperature anomaly: 9.4 °C
  • Maximum temperature: 29.4 °C

Event center: 35.0°N 241.5°E

Area affected: 84885 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-26_to_2023-Apr-30_241.5_35.0

Cold spell occuring from April 23 2023 to May 09 2023 at 22.0°N 240.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 17 days

Time span: April 23 2023 to May 09 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -2.3 °C
  • Mean temperature: 15.3 °C
  • Minimum temperature anomaly: -9.8 °C
  • Minimum temperature: -4.2 °C

Event center: 22.0°N 240.0°E

Area affected: 3613019 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_2023-Apr-23_to_2023-May-09_240.0_22.0

Cold spell occuring from April 22 2023 to April 26 2023 at 36.5°N 261.0°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 22 2023 to April 26 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -6.6 °C
  • Mean temperature: 9.2 °C
  • Minimum temperature anomaly: -8.6 °C
  • Minimum temperature: 6.5 °C

Event center: 36.5°N 261.0°E

Area affected: 65253 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_2023-Apr-22_to_2023-Apr-26_261.0_36.5