Category: Extremes affecting New Zealand

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 5 days

Time span: December 16 2011 to December 20 2011

Statistics over entire affected area:

• Mean temperature anomaly: -3.6 °C
• Mean temperature: 11.9 °C
• Minimum temperature anomaly: -6.7 °C
• Minimum temperature: 5.4 °C

Event center: -38.5°S 177.5°E

Area affected: 154756 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-Dec-16_to_2011-Dec-20_177.5_-38.5

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 4 days

Time span: September 25 2011 to September 28 2011

Statistics over entire affected area:

• Mean temperature anomaly: -2.0 °C
• Mean temperature: 13.9 °C
• Minimum temperature anomaly: -4.5 °C
• Minimum temperature: 8.3 °C

Event center: -35.0°S 173.5°E

Area affected: 262482 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-25_to_2011-Sep-28_173.5_-35.0

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 3 days

Time span: September 02 2011 to September 04 2011

Statistics over entire affected area:

• Mean temperature anomaly: -2.9 °C
• Mean temperature: 5.7 °C
• Minimum temperature anomaly: -5.0 °C
• Minimum temperature: -0.7 °C

Event center: -45.0°S 189.0°E

Area affected: 494979 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-02_to_2011-Sep-04_189.0_-45.0

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 7 days

Time span: July 29 2011 to August 04 2011

Statistics over entire affected area:

• Mean temperature anomaly: -1.8 °C
• Mean temperature: 14.3 °C
• Minimum temperature anomaly: -3.1 °C
• Minimum temperature: 10.6 °C

Event center: -33.0°S 167.0°E

Area affected: 936717 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-Jul-29_to_2011-Aug-04_167.0_-33.0

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 6 days

Time span: July 21 2011 to July 26 2011

Statistics over entire affected area:

• Mean temperature anomaly: -2.6 °C
• Mean temperature: 8.7 °C
• Minimum temperature anomaly: -11.3 °C
• Minimum temperature: -13.6 °C

Event center: -44.5°S 169.5°E

Area affected: 1411794 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-Jul-21_to_2011-Jul-26_169.5_-44.5

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 13 days

Time span: July 02 2011 to July 14 2011

Statistics over entire affected area:

• Mean temperature anomaly: -4.2 °C
• Mean temperature: 0.3 °C
• Minimum temperature anomaly: -12.5 °C
• Minimum temperature: -20.0 °C

Event center: -53.5°S 142.5°E

Area affected: 5390539 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-Jul-02_to_2011-Jul-14_142.5_-53.5