Category: Extremes affecting United States

Heat wave occuring from June 19 2023 to June 25 2023 at 60.5°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: 7 days

Time span: June 19 2023 to June 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 10.8 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 18.6 °C

Event center: 60.5°N 218.5°E

Area affected: 55422 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-Jun-19_to_2023-Jun-25_218.5_60.5

Cold spell occuring from June 19 2023 to June 27 2023 at 36.5°N 241.5°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 9 days

Time span: June 19 2023 to June 27 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -5.8 °C
  • Mean temperature: 14.9 °C
  • Minimum temperature anomaly: -10.2 °C
  • Minimum temperature: 2.7 °C

Event center: 36.5°N 241.5°E

Area affected: 104414 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-Jun-19_to_2023-Jun-27_241.5_36.5

Cold spell occuring from June 15 2023 to June 20 2023 at 48.0°N 297.5°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: June 15 2023 to June 20 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 9.5 °C
  • Minimum temperature anomaly: -8.1 °C
  • Minimum temperature: 6.2 °C

Event center: 48.0°N 297.5°E

Area affected: 148175 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-Jun-15_to_2023-Jun-20_297.5_48.0

Heat wave occuring from June 14 2023 to June 25 2023 at 58.5°N 279.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 12 days

Time span: June 14 2023 to June 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 7.3 °C
  • Mean temperature: 19.9 °C
  • Maximum temperature anomaly: 17.4 °C
  • Maximum temperature: 30.6 °C

Event center: 58.5°N 279.5°E

Area affected: 2661423 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-Jun-14_to_2023-Jun-25_279.5_58.5

Cold spell occuring from June 13 2023 to June 25 2023 at 64.0°N 188.0°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation
  • United States

Duration: 13 days

Time span: June 13 2023 to June 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -2.4 °C
  • Mean temperature: 2.4 °C
  • Minimum temperature anomaly: -5.4 °C
  • Minimum temperature: 0.1 °C

Event center: 64.0°N 188.0°E

Area affected: 170443 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-Jun-13_to_2023-Jun-25_188.0_64.0

Heat wave occuring from June 12 2023 to June 19 2023 at 77.0°N 198.0°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: June 12 2023 to June 19 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 0.7 °C
  • Mean temperature: 1.3 °C
  • Maximum temperature anomaly: 9.0 °C
  • Maximum temperature: 14.2 °C

Event center: 77.0°N 198.0°E

Area affected: 1230472 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-Jun-12_to_2023-Jun-19_198.0_77.0

Cold spell occuring from June 12 2023 to June 14 2023 at 36.5°N 260.0°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: June 12 2023 to June 14 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -5.5 °C
  • Mean temperature: 17.4 °C
  • Minimum temperature anomaly: -7.5 °C
  • Minimum temperature: 12.9 °C

Event center: 36.5°N 260.0°E

Area affected: 101547 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-Jun-12_to_2023-Jun-14_260.0_36.5

Cold spell occuring from June 12 2023 to June 30 2023 at 48.5°N 234.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 19 days

Time span: June 12 2023 to June 30 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -5.1 °C
  • Mean temperature: 7.5 °C
  • Minimum temperature anomaly: -11.6 °C
  • Minimum temperature: -0.9 °C

Event center: 48.5°N 234.5°E

Area affected: 855084 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-Jun-12_to_2023-Jun-30_234.5_48.5

Cold spell occuring from June 11 2023 to June 22 2023 at 47.0°N 269.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 12 days

Time span: June 11 2023 to June 22 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -5.5 °C
  • Mean temperature: 12.5 °C
  • Minimum temperature anomaly: -8.4 °C
  • Minimum temperature: 3.4 °C

Event center: 47.0°N 269.5°E

Area affected: 438089 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-Jun-11_to_2023-Jun-22_269.5_47.0

Cold spell occuring from June 10 2023 to June 16 2023 at 60.5°N 207.0°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: June 10 2023 to June 16 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.9 °C
  • Mean temperature: 5.6 °C
  • Minimum temperature anomaly: -6.8 °C
  • Minimum temperature: -3.6 °C

Event center: 60.5°N 207.0°E

Area affected: 254167 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-Jun-10_to_2023-Jun-16_207.0_60.5