Category: Extremes affecting United States

Heat wave occuring from November 05 2021 to November 09 2021 at 39.0°N 254.5°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: November 05 2021 to November 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 6.6 °C
  • Mean temperature: 10.0 °C
  • Maximum temperature anomaly: 11.2 °C
  • Maximum temperature: 17.6 °C

Event center: 39.0°N 254.5°E

Area affected: 143005 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_2021-Nov-05_to_2021-Nov-09_254.5_39.0

Cold spell occuring from November 01 2021 to November 04 2021 at 50.0°N 177.5°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: November 01 2021 to November 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -2.4 °C
  • Mean temperature: 3.4 °C
  • Minimum temperature anomaly: -3.6 °C
  • Minimum temperature: 0.3 °C

Event center: 50.0°N 177.5°E

Area affected: 97515 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_2021-Nov-01_to_2021-Nov-04_177.5_50.0

Heat wave occuring from October 31 2021 to November 04 2021 at 62.0°N 212.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 5 days

Time span: October 31 2021 to November 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.9 °C
  • Mean temperature: -2.1 °C
  • Maximum temperature anomaly: 12.7 °C
  • Maximum temperature: 8.1 °C

Event center: 62.0°N 212.5°E

Area affected: 164611 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_2021-Oct-31_to_2021-Nov-04_212.5_62.0

Heat wave occuring from October 20 2021 to October 22 2021 at 40.0°N 290.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 3 days

Time span: October 20 2021 to October 22 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 18.7 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 21.9 °C

Event center: 40.0°N 290.0°E

Area affected: 148372 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_2021-Oct-20_to_2021-Oct-22_290.0_40.0

Heat wave occuring from October 19 2021 to November 01 2021 at 20.5°N 283.0°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • Belize
  • Colombia
  • Costa Rica
  • Cuba
  • Dominican Republic
  • El Salvador
  • Guatemala
  • Haiti
  • Honduras
  • Jamaica
  • Mexico
  • Nicaragua
  • Panama
  • Puerto Rico
  • Turks and Caicos Islands
  • United States

Duration: 14 days

Time span: October 19 2021 to November 01 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 27.2 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 31.4 °C

Event center: 20.5°N 283.0°E

Area affected: 4891975 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_2021-Oct-19_to_2021-Nov-01_283.0_20.5

Cold spell occuring from October 18 2021 to October 23 2021 at 33.5°N 240.5°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 6 days

Time span: October 18 2021 to October 23 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.4 °C
  • Mean temperature: 15.4 °C
  • Minimum temperature anomaly: -7.7 °C
  • Minimum temperature: 11.1 °C

Event center: 33.5°N 240.5°E

Area affected: 113168 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_2021-Oct-18_to_2021-Oct-23_240.5_33.5

Cold spell occuring from October 14 2021 to October 24 2021 at 53.0°N 218.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 11 days

Time span: October 14 2021 to October 24 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 7.1 °C
  • Minimum temperature anomaly: -11.9 °C
  • Minimum temperature: -16.4 °C

Event center: 53.0°N 218.5°E

Area affected: 994681 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_2021-Oct-14_to_2021-Oct-24_218.5_53.0

Cold spell occuring from October 09 2021 to October 17 2021 at 38.0°N 248.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 9 days

Time span: October 09 2021 to October 17 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -7.3 °C
  • Mean temperature: 4.6 °C
  • Minimum temperature anomaly: -14.7 °C
  • Minimum temperature: -10.2 °C

Event center: 38.0°N 248.0°E

Area affected: 1856861 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_2021-Oct-09_to_2021-Oct-17_248.0_38.0

Cold spell occuring from October 06 2021 to October 09 2021 at 47.0°N 237.0°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: October 06 2021 to October 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.5 °C
  • Mean temperature: 6.0 °C
  • Minimum temperature anomaly: -5.2 °C
  • Minimum temperature: 0.3 °C

Event center: 47.0°N 237.0°E

Area affected: 55496 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_2021-Oct-06_to_2021-Oct-09_237.0_47.0

Heat wave occuring from October 05 2021 to October 09 2021 at 25.0°N 282.0°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • United States

Duration: 5 days

Time span: October 05 2021 to October 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 28.1 °C
  • Maximum temperature anomaly: 1.8 °C
  • Maximum temperature: 29.0 °C

Event center: 25.0°N 282.0°E

Area affected: 97778 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_2021-Oct-05_to_2021-Oct-09_282.0_25.0