Category: Extremes affecting United States

Cold spell occuring from January 09 2010 to January 22 2010 at 68.5°N 214.0°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 14 days

Time span: January 09 2010 to January 22 2010

Statistics over entire affected area:

  • Mean temperature anomaly: -13.7 °C
  • Mean temperature: -39.2 °C
  • Minimum temperature anomaly: -26.2 °C
  • Minimum temperature: -50.2 °C

Event center: 68.5°N 214.0°E

Area affected: 688383 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_2010-Jan-09_to_2010-Jan-22_214.0_68.5

Cold spell occuring from January 08 2010 to January 12 2010 at 37.0°N 250.0°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: January 08 2010 to January 12 2010

Statistics over entire affected area:

  • Mean temperature anomaly: -7.3 °C
  • Mean temperature: -8.5 °C
  • Minimum temperature anomaly: -10.9 °C
  • Minimum temperature: -14.8 °C

Event center: 37.0°N 250.0°E

Area affected: 81693 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_2010-Jan-08_to_2010-Jan-12_250.0_37.0

Cold spell occuring from January 07 2010 to January 09 2010 at 42.0°N 251.5°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 07 2010 to January 09 2010

Statistics over entire affected area:

  • Mean temperature anomaly: -11.4 °C
  • Mean temperature: -18.9 °C
  • Minimum temperature anomaly: -16.7 °C
  • Minimum temperature: -24.3 °C

Event center: 42.0°N 251.5°E

Area affected: 64885 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_2010-Jan-07_to_2010-Jan-09_251.5_42.0

Heat wave occuring from January 06 2010 to January 23 2010 at 48.5°N 238.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 18 days

Time span: January 06 2010 to January 23 2010

Statistics over entire affected area:

  • Mean temperature anomaly: 8.7 °C
  • Mean temperature: 2.1 °C
  • Maximum temperature anomaly: 18.6 °C
  • Maximum temperature: 11.9 °C

Event center: 48.5°N 238.0°E

Area affected: 1466747 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_2010-Jan-06_to_2010-Jan-23_238.0_48.5

Heat wave occuring from January 04 2010 to January 10 2010 at 58.0°N 207.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 7 days

Time span: January 04 2010 to January 10 2010

Statistics over entire affected area:

  • Mean temperature anomaly: 6.1 °C
  • Mean temperature: 3.6 °C
  • Maximum temperature anomaly: 14.0 °C
  • Maximum temperature: 6.1 °C

Event center: 58.0°N 207.5°E

Area affected: 162005 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_2010-Jan-04_to_2010-Jan-10_207.5_58.0

Heat wave occuring from January 04 2010 to January 07 2010 at 54.0°N 193.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 4 days

Time span: January 04 2010 to January 07 2010

Statistics over entire affected area:

  • Mean temperature anomaly: 2.8 °C
  • Mean temperature: 4.5 °C
  • Maximum temperature anomaly: 5.1 °C
  • Maximum temperature: 5.0 °C

Event center: 54.0°N 193.0°E

Area affected: 79541 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_2010-Jan-04_to_2010-Jan-07_193.0_54.0

Cold spell occuring from August 13 2026 to August 16 2026 at 37.0°N 246.5°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: August 13 2026 to August 16 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.1 °C
  • Mean temperature: 20.2 °C
  • Minimum temperature anomaly: -8.4 °C
  • Minimum temperature: 10.4 °C

Event center: 37.0°N 246.5°E

Area affected: 317189 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_2026-Aug-13_to_2026-Aug-16_246.5_37.0

Cold spell occuring from August 02 2026 to August 04 2026 at 46.0°N 241.5°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: August 02 2026 to August 04 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.3 °C
  • Mean temperature: 17.0 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: 11.6 °C

Event center: 46.0°N 241.5°E

Area affected: 53790 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_2026-Aug-02_to_2026-Aug-04_241.5_46.0

Cold spell occuring from July 22 2026 to July 25 2026 at 41.0°N 273.5°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: July 22 2026 to July 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 20.4 °C
  • Minimum temperature anomaly: -6.4 °C
  • Minimum temperature: 17.4 °C

Event center: 41.0°N 273.5°E

Area affected: 88835 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_2026-Jul-22_to_2026-Jul-25_273.5_41.0

Cold spell occuring from July 12 2026 to July 19 2026 at 30.0°N 258.5°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 8 days

Time span: July 12 2026 to July 19 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 24.1 °C
  • Minimum temperature anomaly: -7.2 °C
  • Minimum temperature: 19.4 °C

Event center: 30.0°N 258.5°E

Area affected: 531115 km$^2$



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Jul-12_to_2026-Jul-19_258.5_30.0