Category: Extremes affecting United States

Cold spell occuring from May 09 2015 to May 12 2015 at 43.0°N 256.5°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: May 09 2015 to May 12 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -8.1 °C
  • Mean temperature: 3.0 °C
  • Minimum temperature anomaly: -12.6 °C
  • Minimum temperature: -2.8 °C

Event center: 43.0°N 256.5°E

Area affected: 177628 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_2015-May-09_to_2015-May-12_256.5_43.0

Heat wave occuring from May 04 2015 to May 13 2015 at 38.5°N 288.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 10 days

Time span: May 04 2015 to May 13 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: 21.1 °C
  • Maximum temperature anomaly: 11.7 °C
  • Maximum temperature: 26.3 °C

Event center: 38.5°N 288.5°E

Area affected: 1877016 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_2015-May-04_to_2015-May-13_288.5_38.5

Heat wave occuring from May 03 2015 to May 08 2015 at 63.5°N 204.5°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: May 03 2015 to May 08 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 5.8 °C
  • Mean temperature: 8.8 °C
  • Maximum temperature anomaly: 8.6 °C
  • Maximum temperature: 12.2 °C

Event center: 63.5°N 204.5°E

Area affected: 136864 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_2015-May-03_to_2015-May-08_204.5_63.5

Heat wave occuring from May 02 2015 to May 10 2015 at 57.0°N 219.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 9 days

Time span: May 02 2015 to May 10 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 8.8 °C
  • Maximum temperature anomaly: 3.9 °C
  • Maximum temperature: 11.0 °C

Event center: 57.0°N 219.5°E

Area affected: 766655 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_2015-May-02_to_2015-May-10_219.5_57.0

Heat wave occuring from May 01 2015 to May 05 2015 at 41.0°N 244.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 5 days

Time span: May 01 2015 to May 05 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 6.6 °C
  • Mean temperature: 16.7 °C
  • Maximum temperature anomaly: 8.7 °C
  • Maximum temperature: 21.9 °C

Event center: 41.0°N 244.5°E

Area affected: 150306 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_2015-May-01_to_2015-May-05_244.5_41.0

Heat wave occuring from April 30 2015 to May 03 2015 at 45.0°N 261.0°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: April 30 2015 to May 03 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 7.7 °C
  • Mean temperature: 17.3 °C
  • Maximum temperature anomaly: 11.7 °C
  • Maximum temperature: 20.7 °C

Event center: 45.0°N 261.0°E

Area affected: 246500 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_2015-Apr-30_to_2015-May-03_261.0_45.0

Cold spell occuring from April 28 2015 to April 30 2015 at 27.5°N 260.5°E

Download data: JSON

Event type: Cold spell

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

  • Mexico
  • United States

Duration: 3 days

Time span: April 28 2015 to April 30 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -6.5 °C
  • Mean temperature: 18.2 °C
  • Minimum temperature anomaly: -8.5 °C
  • Minimum temperature: 13.5 °C

Event center: 27.5°N 260.5°E

Area affected: 76023 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_2015-Apr-28_to_2015-Apr-30_260.5_27.5

Cold spell occuring from April 27 2015 to May 04 2015 at 23.5°N 255.0°E

Download data: JSON

Event type: Cold spell

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

  • Belize
  • Guatemala
  • Honduras
  • Mexico
  • United States

Duration: 8 days

Time span: April 27 2015 to May 04 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -4.4 °C
  • Mean temperature: 18.2 °C
  • Minimum temperature anomaly: -10.1 °C
  • Minimum temperature: 8.0 °C

Event center: 23.5°N 255.0°E

Area affected: 886249 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_2015-Apr-27_to_2015-May-04_255.0_23.5

Heat wave occuring from April 23 2015 to April 29 2015 at 19.5°N 204.0°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: April 23 2015 to April 29 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 23.0 °C
  • Maximum temperature anomaly: 2.1 °C
  • Maximum temperature: 24.6 °C

Event center: 19.5°N 204.0°E

Area affected: 86540 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_2015-Apr-23_to_2015-Apr-29_204.0_19.5

Cold spell occuring from April 21 2015 to May 01 2015 at 42.0°N 278.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 11 days

Time span: April 21 2015 to May 01 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -6.4 °C
  • Mean temperature: -0.0 °C
  • Minimum temperature anomaly: -10.4 °C
  • Minimum temperature: -9.6 °C

Event center: 42.0°N 278.5°E

Area affected: 1308477 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_2015-Apr-21_to_2015-May-01_278.5_42.0