Category: Extremes affecting United States

Heat wave occuring from July 31 2015 to August 08 2015 at 60.5°N 212.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 9 days

Time span: July 31 2015 to August 08 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 2.0 °C
  • Mean temperature: 14.7 °C
  • Maximum temperature anomaly: 5.3 °C
  • Maximum temperature: 16.3 °C

Event center: 60.5°N 212.5°E

Area affected: 56263 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-Jul-31_to_2015-Aug-08_212.5_60.5

Cold spell occuring from July 31 2015 to August 15 2015 at 47.5°N 273.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 16 days

Time span: July 31 2015 to August 15 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -6.1 °C
  • Mean temperature: 12.2 °C
  • Minimum temperature anomaly: -11.5 °C
  • Minimum temperature: 6.2 °C

Event center: 47.5°N 273.5°E

Area affected: 99122 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-Jul-31_to_2015-Aug-15_273.5_47.5

Heat wave occuring from July 26 2015 to July 28 2015 at 48.5°N 267.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 3 days

Time span: July 26 2015 to July 28 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 4.5 °C
  • Mean temperature: 23.9 °C
  • Maximum temperature anomaly: 6.7 °C
  • Maximum temperature: 26.0 °C

Event center: 48.5°N 267.5°E

Area affected: 202103 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-Jul-26_to_2015-Jul-28_267.5_48.5

Cold spell occuring from July 26 2015 to August 10 2015 at 56.0°N 185.5°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 16 days

Time span: July 26 2015 to August 10 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -1.8 °C
  • Mean temperature: 7.5 °C
  • Minimum temperature anomaly: -3.2 °C
  • Minimum temperature: 6.0 °C

Event center: 56.0°N 185.5°E

Area affected: 792814 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-Jul-26_to_2015-Aug-10_185.5_56.0

Cold spell occuring from July 26 2015 to July 28 2015 at 50.0°N 244.0°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: July 26 2015 to July 28 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -6.0 °C
  • Mean temperature: 11.6 °C
  • Minimum temperature anomaly: -8.4 °C
  • Minimum temperature: 3.5 °C

Event center: 50.0°N 244.0°E

Area affected: 118905 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-Jul-26_to_2015-Jul-28_244.0_50.0

Heat wave occuring from July 25 2015 to July 30 2015 at 47.0°N 276.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 6 days

Time span: July 25 2015 to July 30 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 4.9 °C
  • Mean temperature: 23.4 °C
  • Maximum temperature anomaly: 8.0 °C
  • Maximum temperature: 26.7 °C

Event center: 47.0°N 276.5°E

Area affected: 419214 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-Jul-25_to_2015-Jul-30_276.5_47.0

Cold spell occuring from July 22 2015 to July 30 2015 at 61.0°N 191.0°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 9 days

Time span: July 22 2015 to July 30 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -2.1 °C
  • Mean temperature: 6.1 °C
  • Minimum temperature anomaly: -3.0 °C
  • Minimum temperature: 5.3 °C

Event center: 61.0°N 191.0°E

Area affected: 104502 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-Jul-22_to_2015-Jul-30_191.0_61.0

Heat wave occuring from July 20 2015 to July 24 2015 at 26.5°N 280.5°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: July 20 2015 to July 24 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 1.1 °C
  • Mean temperature: 28.7 °C
  • Maximum temperature anomaly: 2.3 °C
  • Maximum temperature: 29.9 °C

Event center: 26.5°N 280.5°E

Area affected: 81048 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-Jul-20_to_2015-Jul-24_280.5_26.5

Heat wave occuring from July 18 2015 to July 20 2015 at 48.5°N 237.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 3 days

Time span: July 18 2015 to July 20 2015

Statistics over entire affected area:

  • Mean temperature anomaly: 4.8 °C
  • Mean temperature: 19.5 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: 25.0 °C

Event center: 48.5°N 237.0°E

Area affected: 91262 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-Jul-18_to_2015-Jul-20_237.0_48.5

Cold spell occuring from July 17 2015 to August 01 2015 at 48.0°N 305.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • United States

Duration: 16 days

Time span: July 17 2015 to August 01 2015

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 12.7 °C
  • Minimum temperature anomaly: -9.4 °C
  • Minimum temperature: 5.1 °C

Event center: 48.0°N 305.5°E

Area affected: 1665375 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-Jul-17_to_2015-Aug-01_305.5_48.0