Category: Extremes affecting United States

Cold spell occuring from July 07 2021 to July 12 2021 at 42.0°N 272.5°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: July 07 2021 to July 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 19.6 °C
  • Minimum temperature anomaly: -6.5 °C
  • Minimum temperature: 14.2 °C

Event center: 42.0°N 272.5°E

Area affected: 85620 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-Jul-07_to_2021-Jul-12_272.5_42.0

Cold spell occuring from July 05 2021 to July 11 2021 at 28.5°N 262.0°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 7 days

Time span: July 05 2021 to July 11 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.3 °C
  • Mean temperature: 26.0 °C
  • Minimum temperature anomaly: -5.3 °C
  • Minimum temperature: 23.3 °C

Event center: 28.5°N 262.0°E

Area affected: 250467 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-Jul-05_to_2021-Jul-11_262.0_28.5

Cold spell occuring from July 05 2021 to July 10 2021 at 56.0°N 204.5°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: July 05 2021 to July 10 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -1.4 °C
  • Mean temperature: 9.0 °C
  • Minimum temperature anomaly: -3.1 °C
  • Minimum temperature: 8.1 °C

Event center: 56.0°N 204.5°E

Area affected: 89208 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-Jul-05_to_2021-Jul-10_204.5_56.0

Cold spell occuring from July 05 2021 to July 12 2021 at 63.5°N 201.5°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: July 05 2021 to July 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.6 °C
  • Mean temperature: 8.7 °C
  • Minimum temperature anomaly: -8.1 °C
  • Minimum temperature: -3.5 °C

Event center: 63.5°N 201.5°E

Area affected: 677282 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-Jul-05_to_2021-Jul-12_201.5_63.5

Cold spell occuring from July 02 2021 to July 21 2021 at 37.5°N 237.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 20 days

Time span: July 02 2021 to July 21 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -1.8 °C
  • Mean temperature: 12.5 °C
  • Minimum temperature anomaly: -3.5 °C
  • Minimum temperature: 10.4 °C

Event center: 37.5°N 237.0°E

Area affected: 186433 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-Jul-02_to_2021-Jul-21_237.0_37.5

Cold spell occuring from July 01 2021 to July 05 2021 at 42.0°N 289.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 5 days

Time span: July 01 2021 to July 05 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -5.2 °C
  • Mean temperature: 13.5 °C
  • Minimum temperature anomaly: -8.7 °C
  • Minimum temperature: 8.8 °C

Event center: 42.0°N 289.0°E

Area affected: 326421 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-Jul-01_to_2021-Jul-05_289.0_42.0

Cold spell occuring from June 28 2021 to July 03 2021 at 70.5°N 202.0°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: June 28 2021 to July 03 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.7 °C
  • Mean temperature: 2.2 °C
  • Minimum temperature anomaly: -9.5 °C
  • Minimum temperature: -0.4 °C

Event center: 70.5°N 202.0°E

Area affected: 83905 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-Jun-28_to_2021-Jul-03_202.0_70.5

Cold spell occuring from June 23 2021 to June 25 2021 at 36.5°N 281.5°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: June 23 2021 to June 25 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.0 °C
  • Mean temperature: 20.5 °C
  • Minimum temperature anomaly: -6.5 °C
  • Minimum temperature: 16.0 °C

Event center: 36.5°N 281.5°E

Area affected: 277291 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-Jun-23_to_2021-Jun-25_281.5_36.5

Heat wave occuring from June 23 2021 to October 12 2021 at 72.0°N 339.0°E

Download data: JSON

Event type: Heat wave

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

  • Albania
  • Algeria
  • Andorra
  • Bahamas
  • Belgium
  • Burkina Faso
  • Canada
  • Czechia
  • Denmark
  • Egypt
  • Finland
  • France
  • Germany
  • Greece
  • Greenland
  • Iceland
  • Ireland
  • Italy
  • Libya
  • Mali
  • Mauritania
  • Morocco
  • Netherlands
  • Niger
  • Norway
  • Poland
  • Portugal
  • Russian Federation
  • Spain
  • Svalbard and Jan Mayen
  • Sweden
  • Tunisia
  • Türkiye
  • United Kingdom
  • United States

Duration: 112 days

Time span: June 23 2021 to October 12 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.8 °C
  • Mean temperature: 12.4 °C
  • Maximum temperature anomaly: 10.1 °C
  • Maximum temperature: 41.9 °C

Event center: 30.0°N 0.0°E

Area affected: 35897257 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-Jun-23_to_2021-Oct-12_339.0_72.0

Cold spell occuring from June 22 2021 to July 08 2021 at 28.5°N 270.5°E

Download data: JSON

Event type: Cold spell

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

  • Bahamas
  • Cuba
  • Mexico
  • United States

Duration: 17 days

Time span: June 22 2021 to July 08 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -1.3 °C
  • Mean temperature: 25.9 °C
  • Minimum temperature anomaly: -4.0 °C
  • Minimum temperature: 23.5 °C

Event center: 28.5°N 270.5°E

Area affected: 2000808 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-Jun-22_to_2021-Jul-08_270.5_28.5