Category: Cold spells affecting United States

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: October 01 2011 to October 05 2011

Statistics over entire affected area:

• Mean temperature anomaly: -4.5 °C
• Mean temperature: 18.4 °C
• Minimum temperature anomaly: -8.3 °C
• Minimum temperature: 11.7 °C

Event center: 33.0°N 283.0°E

Area affected: 582258 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_2011-Oct-01_to_2011-Oct-05_283.0_33.0

Download data: JSON

Event type: Cold spell

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

• United States

Duration: 8 days

Time span: September 20 2011 to September 27 2011

Statistics over entire affected area:

• Mean temperature anomaly: -1.0 °C
• Mean temperature: 24.7 °C
• Minimum temperature anomaly: -2.1 °C
• Minimum temperature: 20.6 °C

Event center: 16.5°N 204.5°E

Area affected: 268242 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_2011-Sep-20_to_2011-Sep-27_204.5_16.5

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: September 15 2011 to September 19 2011

Statistics over entire affected area:

• Mean temperature anomaly: -5.4 °C
• Mean temperature: 14.9 °C
• Minimum temperature anomaly: -9.2 °C
• Minimum temperature: 6.2 °C

Event center: 36.0°N 278.5°E

Area affected: 659921 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_2011-Sep-15_to_2011-Sep-19_278.5_36.0

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: September 15 2011 to September 17 2011

Statistics over entire affected area:

• Mean temperature anomaly: -6.2 °C
• Mean temperature: 13.6 °C
• Minimum temperature anomaly: -9.1 °C
• Minimum temperature: 10.2 °C

Event center: 39.0°N 277.0°E

Area affected: 91192 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_2011-Sep-15_to_2011-Sep-17_277.0_39.0

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: September 08 2011 to September 11 2011

Statistics over entire affected area:

• Mean temperature anomaly: -1.8 °C
• Mean temperature: 10.3 °C
• Minimum temperature anomaly: -2.9 °C
• Minimum temperature: 7.7 °C

Event center: 58.5°N 215.5°E

Area affected: 205995 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_2011-Sep-08_to_2011-Sep-11_215.5_58.5

Download data: JSON

Event type: Cold spell

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

• United States

Duration: 8 days

Time span: September 05 2011 to September 12 2011

Statistics over entire affected area:

• Mean temperature anomaly: -2.8 °C
• Mean temperature: 13.2 °C
• Minimum temperature anomaly: -6.1 °C
• Minimum temperature: 4.4 °C

Event center: 36.0°N 192.5°E

Area affected: 4081603 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_2011-Sep-05_to_2011-Sep-12_192.5_36.0