Category: Extremes affecting United States

Heat wave occuring from November 06 2023 to November 18 2023 at 66.5°N 215.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 13 days

Time span: November 06 2023 to November 18 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 10.9 °C
  • Mean temperature: -7.1 °C
  • Maximum temperature anomaly: 15.5 °C
  • Maximum temperature: 1.2 °C

Event center: 66.5°N 215.5°E

Area affected: 341597 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-Nov-06_to_2023-Nov-18_215.5_66.5

Heat wave occuring from November 02 2023 to November 06 2023 at 42.5°N 237.0°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: November 02 2023 to November 06 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 12.6 °C
  • Maximum temperature anomaly: 8.2 °C
  • Maximum temperature: 16.6 °C

Event center: 42.5°N 237.0°E

Area affected: 53788 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-Nov-02_to_2023-Nov-06_237.0_42.5

Heat wave occuring from November 02 2023 to November 07 2023 at 37.5°N 239.0°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: November 02 2023 to November 07 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 15.4 °C
  • Maximum temperature anomaly: 8.6 °C
  • Maximum temperature: 21.1 °C

Event center: 37.5°N 239.0°E

Area affected: 156017 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-Nov-02_to_2023-Nov-07_239.0_37.5

Cold spell occuring from November 01 2023 to November 03 2023 at 36.5°N 279.0°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: November 01 2023 to November 03 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -7.0 °C
  • Mean temperature: 6.4 °C
  • Minimum temperature anomaly: -9.2 °C
  • Minimum temperature: 0.4 °C

Event center: 36.5°N 279.0°E

Area affected: 141336 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-Nov-01_to_2023-Nov-03_279.0_36.5

Heat wave occuring from October 30 2023 to November 07 2023 at 57.5°N 228.5°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: October 30 2023 to November 07 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.8 °C
  • Mean temperature: 1.8 °C
  • Maximum temperature anomaly: 7.0 °C
  • Maximum temperature: 9.4 °C

Event center: 57.5°N 228.5°E

Area affected: 150639 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-Oct-30_to_2023-Nov-07_228.5_57.5

Cold spell occuring from October 20 2023 to November 03 2023 at 46.5°N 254.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Mexico
  • United States

Duration: 15 days

Time span: October 20 2023 to November 03 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -8.3 °C
  • Mean temperature: -2.0 °C
  • Minimum temperature anomaly: -20.7 °C
  • Minimum temperature: -28.0 °C

Event center: 46.5°N 254.5°E

Area affected: 7698824 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-Oct-20_to_2023-Nov-03_254.5_46.5

Cold spell occuring from October 15 2023 to October 19 2023 at 28.0°N 277.0°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: October 15 2023 to October 19 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.9 °C
  • Mean temperature: 20.2 °C
  • Minimum temperature anomaly: -7.3 °C
  • Minimum temperature: 10.9 °C

Event center: 28.0°N 277.0°E

Area affected: 1337624 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-Oct-15_to_2023-Oct-19_277.0_28.0

Cold spell occuring from October 10 2023 to October 13 2023 at 57.0°N 208.0°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: October 10 2023 to October 13 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.0 °C
  • Mean temperature: 4.7 °C
  • Minimum temperature anomaly: -6.3 °C
  • Minimum temperature: -4.9 °C

Event center: 57.0°N 208.0°E

Area affected: 190316 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-Oct-10_to_2023-Oct-13_208.0_57.0

Heat wave occuring from October 09 2023 to October 12 2023 at 35.0°N 258.5°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: October 09 2023 to October 12 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 5.6 °C
  • Mean temperature: 21.8 °C
  • Maximum temperature anomaly: 7.6 °C
  • Maximum temperature: 25.0 °C

Event center: 35.0°N 258.5°E

Area affected: 53477 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-Oct-09_to_2023-Oct-12_258.5_35.0

Cold spell occuring from October 08 2023 to October 10 2023 at 30.5°N 278.5°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: October 08 2023 to October 10 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.6 °C
  • Mean temperature: 20.5 °C
  • Minimum temperature anomaly: -7.3 °C
  • Minimum temperature: 14.5 °C

Event center: 30.5°N 278.5°E

Area affected: 155883 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-Oct-08_to_2023-Oct-10_278.5_30.5