Category: Extremes affecting United States

Heat wave occuring from February 25 2021 to March 03 2021 at 27.0°N 284.0°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • Cuba
  • Mexico
  • United States

Duration: 7 days

Time span: February 25 2021 to March 03 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 3.6 °C
  • Mean temperature: 23.9 °C
  • Maximum temperature anomaly: 11.8 °C
  • Maximum temperature: 27.2 °C

Event center: 27.0°N 284.0°E

Area affected: 1714919 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-Feb-25_to_2021-Mar-03_284.0_27.0

Heat wave occuring from February 25 2021 to February 27 2021 at 48.5°N 199.0°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: February 25 2021 to February 27 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 5.5 °C
  • Maximum temperature anomaly: 3.8 °C
  • Maximum temperature: 7.8 °C

Event center: 48.5°N 199.0°E

Area affected: 345933 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-Feb-25_to_2021-Feb-27_199.0_48.5

Heat wave occuring from February 23 2021 to March 18 2021 at 19.5°N 258.5°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 24 days

Time span: February 23 2021 to March 18 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: 21.3 °C
  • Maximum temperature anomaly: 10.3 °C
  • Maximum temperature: 30.8 °C

Event center: 19.5°N 258.5°E

Area affected: 2359764 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-Feb-23_to_2021-Mar-18_258.5_19.5

Cold spell occuring from February 14 2021 to March 04 2021 at 72.0°N 210.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Russian Federation
  • United States

Duration: 19 days

Time span: February 14 2021 to March 04 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -9.8 °C
  • Mean temperature: -31.6 °C
  • Minimum temperature anomaly: -19.8 °C
  • Minimum temperature: -47.9 °C

Event center: 72.0°N 210.5°E

Area affected: 3459166 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-Feb-14_to_2021-Mar-04_210.5_72.0

Cold spell occuring from February 12 2021 to February 22 2021 at 72.0°N 188.5°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation
  • United States

Duration: 11 days

Time span: February 12 2021 to February 22 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -7.6 °C
  • Mean temperature: -28.3 °C
  • Minimum temperature anomaly: -16.0 °C
  • Minimum temperature: -36.3 °C

Event center: 72.0°N 188.5°E

Area affected: 397950 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-Feb-12_to_2021-Feb-22_188.5_72.0

Heat wave occuring from February 09 2021 to February 16 2021 at 55.5°N 192.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 8 days

Time span: February 09 2021 to February 16 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.9 °C
  • Mean temperature: 3.9 °C
  • Maximum temperature anomaly: 6.2 °C
  • Maximum temperature: 5.7 °C

Event center: 55.5°N 192.0°E

Area affected: 384424 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-Feb-09_to_2021-Feb-16_192.0_55.5

Heat wave occuring from February 08 2021 to March 02 2021 at 37.5°N 210.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 23 days

Time span: February 08 2021 to March 02 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.6 °C
  • Mean temperature: 19.0 °C
  • Maximum temperature anomaly: 4.9 °C
  • Maximum temperature: 25.8 °C

Event center: 37.5°N 210.5°E

Area affected: 6728781 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-Feb-08_to_2021-Mar-02_210.5_37.5

Cold spell occuring from February 06 2021 to March 11 2021 at 66.0°N 35.5°E

Download data: JSON

Event type: Cold spell

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

  • Armenia
  • Azerbaijan
  • Belarus
  • China
  • Estonia
  • Finland
  • Iran, Islamic Republic of
  • Kazakhstan
  • Latvia
  • Lithuania
  • Norway
  • Poland
  • Russian Federation
  • Turkmenistan
  • Ukraine
  • United States
  • Uzbekistan

Duration: 34 days

Time span: February 06 2021 to March 11 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -12.8 °C
  • Mean temperature: -27.8 °C
  • Minimum temperature anomaly: -25.5 °C
  • Minimum temperature: -47.4 °C

Event center: 66.0°N 35.5°E

Area affected: 15167350 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-Feb-06_to_2021-Mar-11_35.5_66.0

Cold spell occuring from February 02 2021 to February 05 2021 at 24.0°N 281.5°E

Download data: JSON

Event type: Cold spell

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

  • Bahamas
  • Cuba
  • United States

Duration: 4 days

Time span: February 02 2021 to February 05 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -3.8 °C
  • Mean temperature: 18.3 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 5.4 °C

Event center: 24.0°N 281.5°E

Area affected: 1238031 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-Feb-02_to_2021-Feb-05_281.5_24.0

Cold spell occuring from January 29 2021 to January 31 2021 at 33.0°N 293.5°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: January 29 2021 to January 31 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.7 °C
  • Mean temperature: 10.4 °C
  • Minimum temperature anomaly: -10.7 °C
  • Minimum temperature: -17.6 °C

Event center: 33.0°N 293.5°E

Area affected: 978898 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-Jan-29_to_2021-Jan-31_293.5_33.0