Category: Extremes affecting United States

Cold spell occuring from June 22 2020 to June 26 2020 at 64.5°N 217.5°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: June 22 2020 to June 26 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -5.0 °C
  • Mean temperature: 8.4 °C
  • Minimum temperature anomaly: -7.4 °C
  • Minimum temperature: -0.5 °C

Event center: 64.5°N 217.5°E

Area affected: 203304 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_2020-Jun-22_to_2020-Jun-26_217.5_64.5

Cold spell occuring from June 14 2020 to June 16 2020 at 46.5°N 244.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 3 days

Time span: June 14 2020 to June 16 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -5.0 °C
  • Mean temperature: 10.6 °C
  • Minimum temperature anomaly: -6.6 °C
  • Minimum temperature: 3.5 °C

Event center: 46.5°N 244.5°E

Area affected: 68947 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_2020-Jun-14_to_2020-Jun-16_244.5_46.5

Heat wave occuring from June 13 2020 to July 02 2020 at 47.5°N 296.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 20 days

Time span: June 13 2020 to July 02 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 6.3 °C
  • Mean temperature: 23.6 °C
  • Maximum temperature anomaly: 12.9 °C
  • Maximum temperature: 30.4 °C

Event center: 47.5°N 296.0°E

Area affected: 2526894 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_2020-Jun-13_to_2020-Jul-02_296.0_47.5

Cold spell occuring from June 12 2020 to June 16 2020 at 45.5°N 273.0°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: June 12 2020 to June 16 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -5.4 °C
  • Mean temperature: 13.2 °C
  • Minimum temperature anomaly: -7.3 °C
  • Minimum temperature: 9.4 °C

Event center: 45.5°N 273.0°E

Area affected: 57922 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_2020-Jun-12_to_2020-Jun-16_273.0_45.5

Heat wave occuring from June 12 2020 to June 14 2020 at 44.5°N 254.0°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: June 12 2020 to June 14 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 7.4 °C
  • Mean temperature: 24.4 °C
  • Maximum temperature anomaly: 11.8 °C
  • Maximum temperature: 29.9 °C

Event center: 44.5°N 254.0°E

Area affected: 144473 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_2020-Jun-12_to_2020-Jun-14_254.0_44.5

Cold spell occuring from June 11 2020 to June 20 2020 at 45.5°N 279.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 10 days

Time span: June 11 2020 to June 20 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -5.7 °C
  • Mean temperature: 10.1 °C
  • Minimum temperature anomaly: -11.4 °C
  • Minimum temperature: 3.4 °C

Event center: 45.5°N 279.0°E

Area affected: 549021 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_2020-Jun-11_to_2020-Jun-20_279.0_45.5

Cold spell occuring from June 11 2020 to June 15 2020 at 25.5°N 261.0°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: June 11 2020 to June 15 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -3.2 °C
  • Mean temperature: 24.9 °C
  • Minimum temperature anomaly: -5.0 °C
  • Minimum temperature: 15.8 °C

Event center: 25.5°N 261.0°E

Area affected: 127958 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_2020-Jun-11_to_2020-Jun-15_261.0_25.5

Heat wave occuring from June 08 2020 to June 19 2020 at 51.0°N 202.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 12 days

Time span: June 08 2020 to June 19 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 8.6 °C
  • Maximum temperature anomaly: 1.9 °C
  • Maximum temperature: 9.6 °C

Event center: 51.0°N 202.5°E

Area affected: 139597 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_2020-Jun-08_to_2020-Jun-19_202.5_51.0

Heat wave occuring from June 06 2020 to June 11 2020 at 28.5°N 264.0°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: June 06 2020 to June 11 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 1.2 °C
  • Mean temperature: 28.4 °C
  • Maximum temperature anomaly: 2.3 °C
  • Maximum temperature: 30.2 °C

Event center: 28.5°N 264.0°E

Area affected: 68439 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_2020-Jun-06_to_2020-Jun-11_264.0_28.5

Heat wave occuring from June 03 2020 to June 05 2020 at 41.0°N 246.0°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: June 03 2020 to June 05 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 6.9 °C
  • Mean temperature: 24.5 °C
  • Maximum temperature anomaly: 8.7 °C
  • Maximum temperature: 28.0 °C

Event center: 41.0°N 246.0°E

Area affected: 105501 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_2020-Jun-03_to_2020-Jun-05_246.0_41.0