Category: Extremes affecting United States

Cold spell occuring from September 01 2024 to September 05 2024 at 29.0°N 256.5°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 5 days

Time span: September 01 2024 to September 05 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -4.7 °C
  • Mean temperature: 21.0 °C
  • Minimum temperature anomaly: -7.1 °C
  • Minimum temperature: 17.1 °C

Event center: 29.0°N 256.5°E

Area affected: 278517 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-01_to_2024-Sep-05_256.5_29.0

Heat wave occuring from August 31 2024 to September 03 2024 at 53.0°N 246.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 4 days

Time span: August 31 2024 to September 03 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 6.1 °C
  • Mean temperature: 18.5 °C
  • Maximum temperature anomaly: 8.1 °C
  • Maximum temperature: 23.8 °C

Event center: 53.0°N 246.5°E

Area affected: 125658 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-Aug-31_to_2024-Sep-03_246.5_53.0

Heat wave occuring from August 29 2024 to September 03 2024 at 50.0°N 233.0°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: August 29 2024 to September 03 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: 16.5 °C
  • Maximum temperature anomaly: 8.0 °C
  • Maximum temperature: 27.6 °C

Event center: 50.0°N 233.0°E

Area affected: 328408 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-Aug-29_to_2024-Sep-03_233.0_50.0

Cold spell occuring from August 28 2024 to September 01 2024 at 54.5°N 173.0°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: August 28 2024 to September 01 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -1.7 °C
  • Mean temperature: 8.6 °C
  • Minimum temperature anomaly: -2.6 °C
  • Minimum temperature: 7.2 °C

Event center: 54.5°N 173.0°E

Area affected: 75896 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-Aug-28_to_2024-Sep-01_173.0_54.5

Heat wave occuring from August 25 2024 to September 04 2024 at 31.5°N 274.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 11 days

Time span: August 25 2024 to September 04 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 27.5 °C
  • Maximum temperature anomaly: 8.2 °C
  • Maximum temperature: 31.0 °C

Event center: 31.5°N 274.5°E

Area affected: 859954 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-Aug-25_to_2024-Sep-04_274.5_31.5

Cold spell occuring from August 22 2024 to September 05 2024 at 57.0°N 177.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 15 days

Time span: August 22 2024 to September 05 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.1 °C
  • Mean temperature: 7.6 °C
  • Minimum temperature anomaly: -4.6 °C
  • Minimum temperature: 4.2 °C

Event center: 57.0°N 177.0°E

Area affected: 1086010 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-Aug-22_to_2024-Sep-05_177.0_57.0

Cold spell occuring from August 22 2024 to August 29 2024 at 40.5°N 243.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 8 days

Time span: August 22 2024 to August 29 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -6.5 °C
  • Mean temperature: 16.1 °C
  • Minimum temperature anomaly: -13.6 °C
  • Minimum temperature: 4.9 °C

Event center: 40.5°N 243.0°E

Area affected: 702964 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-Aug-22_to_2024-Aug-29_243.0_40.5

Heat wave occuring from August 21 2024 to August 26 2024 at 52.5°N 268.5°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: August 21 2024 to August 26 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 21.7 °C
  • Maximum temperature anomaly: 9.1 °C
  • Maximum temperature: 26.1 °C

Event center: 52.5°N 268.5°E

Area affected: 163161 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-Aug-21_to_2024-Aug-26_268.5_52.5

Heat wave occuring from August 19 2024 to September 18 2024 at 31.5°N 214.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 31 days

Time span: August 19 2024 to September 18 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 22.8 °C
  • Maximum temperature anomaly: 3.7 °C
  • Maximum temperature: 26.9 °C

Event center: 31.5°N 214.0°E

Area affected: 3155295 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-Aug-19_to_2024-Sep-18_214.0_31.5

Cold spell occuring from August 19 2024 to August 26 2024 at 36.5°N 284.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 8 days

Time span: August 19 2024 to August 26 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 18.5 °C
  • Minimum temperature anomaly: -7.7 °C
  • Minimum temperature: 10.1 °C

Event center: 36.5°N 284.0°E

Area affected: 1570250 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-Aug-19_to_2024-Aug-26_284.0_36.5