Category: Extremes affecting United States

Cold spell occuring from February 24 2012 to March 10 2012 at 69.0°N 198.0°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: February 24 2012 to March 10 2012

Statistics over entire affected area:

  • Mean temperature anomaly: -12.8 °C
  • Mean temperature: -35.9 °C
  • Minimum temperature anomaly: -18.5 °C
  • Minimum temperature: -42.0 °C

Event center: 69.0°N 198.0°E

Area affected: 278708 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_2012-Feb-24_to_2012-Mar-10_198.0_69.0

Cold spell occuring from February 24 2012 to March 04 2012 at 59.0°N 183.5°E

Download data: JSON

Event type: Cold spell

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

  • United States

Duration: 10 days

Time span: February 24 2012 to March 04 2012

Statistics over entire affected area:

  • Mean temperature anomaly: -10.7 °C
  • Mean temperature: -15.7 °C
  • Minimum temperature anomaly: -22.1 °C
  • Minimum temperature: -31.6 °C

Event center: 59.0°N 183.5°E

Area affected: 651801 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_2012-Feb-24_to_2012-Mar-04_183.5_59.0

Heat wave occuring from February 22 2012 to February 25 2012 at 39.5°N 238.0°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: February 22 2012 to February 25 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 5.2 °C
  • Mean temperature: 13.5 °C
  • Maximum temperature anomaly: 7.4 °C
  • Maximum temperature: 19.0 °C

Event center: 39.5°N 238.0°E

Area affected: 55313 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_2012-Feb-22_to_2012-Feb-25_238.0_39.5

Cold spell occuring from February 09 2012 to March 16 2012 at 11.0°N 227.5°E

Download data: JSON

Event type: Cold spell

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

  • Canada
  • Mexico
  • United States

Duration: 37 days

Time span: February 09 2012 to March 16 2012

Statistics over entire affected area:

  • Mean temperature anomaly: -1.6 °C
  • Mean temperature: 19.8 °C
  • Minimum temperature anomaly: -7.6 °C
  • Minimum temperature: 0.5 °C

Event center: 11.0°N 227.5°E

Area affected: 10676150 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_2012-Feb-09_to_2012-Mar-16_227.5_11.0

Heat wave occuring from February 05 2012 to February 20 2012 at 61.0°N 273.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland
  • United States

Duration: 16 days

Time span: February 05 2012 to February 20 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 10.5 °C
  • Mean temperature: -17.0 °C
  • Maximum temperature anomaly: 20.6 °C
  • Maximum temperature: 1.2 °C

Event center: 61.0°N 273.0°E

Area affected: 4742218 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_2012-Feb-05_to_2012-Feb-20_273.0_61.0

Heat wave occuring from February 01 2012 to February 07 2012 at 31.5°N 279.0°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: February 01 2012 to February 07 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 19.6 °C
  • Maximum temperature anomaly: 7.1 °C
  • Maximum temperature: 23.5 °C

Event center: 31.5°N 279.0°E

Area affected: 105244 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_2012-Feb-01_to_2012-Feb-07_279.0_31.5

Heat wave occuring from January 31 2012 to February 04 2012 at 38.5°N 271.5°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: January 31 2012 to February 04 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 8.7 °C
  • Mean temperature: 10.2 °C
  • Maximum temperature anomaly: 13.4 °C
  • Maximum temperature: 15.0 °C

Event center: 38.5°N 271.5°E

Area affected: 391481 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_2012-Jan-31_to_2012-Feb-04_271.5_38.5

Heat wave occuring from January 31 2012 to February 05 2012 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):

  • Mexico
  • United States

Duration: 6 days

Time span: January 31 2012 to February 05 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 7.3 °C
  • Mean temperature: 19.9 °C
  • Maximum temperature anomaly: 10.5 °C
  • Maximum temperature: 25.5 °C

Event center: 30.0°N 270.5°E

Area affected: 512191 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_2012-Jan-31_to_2012-Feb-05_270.5_30.0

Heat wave occuring from January 30 2012 to February 04 2012 at 40.0°N 268.5°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: January 30 2012 to February 04 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 10.2 °C
  • Mean temperature: 7.8 °C
  • Maximum temperature anomaly: 15.1 °C
  • Maximum temperature: 14.4 °C

Event center: 40.0°N 268.5°E

Area affected: 207356 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_2012-Jan-30_to_2012-Feb-04_268.5_40.0

Heat wave occuring from January 30 2012 to February 03 2012 at 46.5°N 266.5°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: January 30 2012 to February 03 2012

Statistics over entire affected area:

  • Mean temperature anomaly: 10.4 °C
  • Mean temperature: 0.7 °C
  • Maximum temperature anomaly: 14.4 °C
  • Maximum temperature: 6.2 °C

Event center: 46.5°N 266.5°E

Area affected: 62780 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_2012-Jan-30_to_2012-Feb-03_266.5_46.5