Category: Extremes affecting United States

Cold spell occuring from March 05 2023 to March 13 2023 at 48.0°N 245.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 9 days

Time span: March 05 2023 to March 13 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -9.2 °C
  • Mean temperature: -12.7 °C
  • Minimum temperature anomaly: -15.7 °C
  • Minimum temperature: -20.8 °C

Event center: 48.0°N 245.5°E

Area affected: 180198 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_2023-Mar-05_to_2023-Mar-13_245.5_48.0

Heat wave occuring from March 04 2023 to March 07 2023 at 48.5°N 272.5°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: March 04 2023 to March 07 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.2 °C
  • Mean temperature: -0.1 °C
  • Maximum temperature anomaly: 9.4 °C
  • Maximum temperature: 0.6 °C

Event center: 48.5°N 272.5°E

Area affected: 56162 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_2023-Mar-04_to_2023-Mar-07_272.5_48.5

Cold spell occuring from February 22 2023 to March 04 2023 at 10.0°N 213.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 11 days

Time span: February 22 2023 to March 04 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -1.1 °C
  • Mean temperature: 22.3 °C
  • Minimum temperature anomaly: -2.5 °C
  • Minimum temperature: 18.5 °C

Event center: 10.0°N 213.0°E

Area affected: 1164294 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_2023-Feb-22_to_2023-Mar-04_213.0_10.0

Heat wave occuring from February 15 2023 to March 17 2023 at 30.0°N 270.5°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • Belize
  • Cuba
  • Guatemala
  • Honduras
  • Mexico
  • United States

Duration: 31 days

Time span: February 15 2023 to March 17 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.8 °C
  • Mean temperature: 22.9 °C
  • Maximum temperature anomaly: 14.2 °C
  • Maximum temperature: 31.7 °C

Event center: 30.0°N 270.5°E

Area affected: 6683287 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_2023-Feb-15_to_2023-Mar-17_270.5_30.0

Heat wave occuring from February 13 2023 to March 15 2023 at 42.5°N 197.0°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: February 13 2023 to March 15 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 3.9 °C
  • Mean temperature: 9.7 °C
  • Maximum temperature anomaly: 23.6 °C
  • Maximum temperature: 25.8 °C

Event center: 42.5°N 197.0°E

Area affected: 11621576 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_2023-Feb-13_to_2023-Mar-15_197.0_42.5

Heat wave occuring from February 07 2023 to February 17 2023 at 48.5°N 272.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 11 days

Time span: February 07 2023 to February 17 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 10.3 °C
  • Mean temperature: 3.5 °C
  • Maximum temperature anomaly: 19.3 °C
  • Maximum temperature: 24.2 °C

Event center: 48.5°N 272.5°E

Area affected: 3346791 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_2023-Feb-07_to_2023-Feb-17_272.5_48.5

Cold spell occuring from February 03 2023 to February 25 2023 at 66.5°N 142.5°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation
  • United States

Duration: 23 days

Time span: February 03 2023 to February 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -9.4 °C
  • Mean temperature: -35.8 °C
  • Minimum temperature anomaly: -21.5 °C
  • Minimum temperature: -54.6 °C

Event center: 66.5°N 142.5°E

Area affected: 5159770 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_2023-Feb-03_to_2023-Feb-25_142.5_66.5

Cold spell occuring from January 30 2023 to March 13 2023 at 43.5°N 247.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Mexico
  • United States

Duration: 43 days

Time span: January 30 2023 to March 13 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -7.6 °C
  • Mean temperature: -14.8 °C
  • Minimum temperature anomaly: -27.1 °C
  • Minimum temperature: -52.3 °C

Event center: 43.5°N 247.5°E

Area affected: 20569056 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_2023-Jan-30_to_2023-Mar-13_247.5_43.5

Cold spell occuring from January 29 2023 to February 03 2023 at 43.5°N 247.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Mexico
  • United States

Duration: 6 days

Time span: January 29 2023 to February 03 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -11.0 °C
  • Mean temperature: -9.8 °C
  • Minimum temperature anomaly: -24.5 °C
  • Minimum temperature: -28.1 °C

Event center: 43.5°N 247.5°E

Area affected: 2631313 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_2023-Jan-29_to_2023-Feb-03_247.5_43.5

Cold spell occuring from January 25 2023 to February 23 2023 at 71.0°N 234.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 30 days

Time span: January 25 2023 to February 23 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -8.6 °C
  • Mean temperature: -33.0 °C
  • Minimum temperature anomaly: -19.2 °C
  • Minimum temperature: -44.5 °C

Event center: 71.0°N 234.0°E

Area affected: 833054 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_2023-Jan-25_to_2023-Feb-23_234.0_71.0