Category: Cold spells affecting New Zealand

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 11 2023 to September 14 2023

Statistics over entire affected area:

• Mean temperature anomaly: -3.5 °C
• Mean temperature: 1.4 °C
• Minimum temperature anomaly: -4.6 °C
• Minimum temperature: -2.3 °C

Event center: -55.5°S 167.0°E

Area affected: 222106 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_2023-Sep-11_to_2023-Sep-14_167.0_-55.5

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: June 29 2023 to July 02 2023

Statistics over entire affected area:

• Mean temperature anomaly: -3.2 °C
• Mean temperature: 3.4 °C
• Minimum temperature anomaly: -4.4 °C
• Minimum temperature: 0.2 °C

Event center: -46.5°S 171.0°E

Area affected: 504152 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_2023-Jun-29_to_2023-Jul-02_171.0_-46.5

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: March 28 2023 to March 30 2023

Statistics over entire affected area:

• Mean temperature anomaly: -6.7 °C
• Mean temperature: 4.3 °C
• Minimum temperature anomaly: -11.4 °C
• Minimum temperature: -3.1 °C

Event center: -43.5°S 171.0°E

Area affected: 80029 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_2023-Mar-28_to_2023-Mar-30_171.0_-43.5

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: March 28 2023 to March 30 2023

Statistics over entire affected area:

• Mean temperature anomaly: -3.5 °C
• Mean temperature: 13.0 °C
• Minimum temperature anomaly: -6.9 °C
• Minimum temperature: 5.1 °C

Event center: -39.0°S 175.5°E

Area affected: 84356 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_2023-Mar-28_to_2023-Mar-30_175.5_-39.0

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: December 29 2022 to December 31 2022

Statistics over entire affected area:

• Mean temperature anomaly: -1.7 °C
• Mean temperature: 19.0 °C
• Minimum temperature anomaly: -2.1 °C
• Minimum temperature: 17.4 °C

Event center: -31.5°S 184.0°E

Area affected: 221152 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_2022-Dec-29_to_2022-Dec-31_184.0_-31.5

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: October 05 2022 to October 07 2022

Statistics over entire affected area:

• Mean temperature anomaly: -4.7 °C
• Mean temperature: 6.1 °C
• Minimum temperature anomaly: -7.7 °C
• Minimum temperature: 0.2 °C

Event center: -41.0°S 175.0°E

Area affected: 61937 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_2022-Oct-05_to_2022-Oct-07_175.0_-41.0

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: October 05 2022 to October 07 2022

Statistics over entire affected area:

• Mean temperature anomaly: -3.2 °C
• Mean temperature: 7.3 °C
• Minimum temperature anomaly: -6.0 °C
• Minimum temperature: 2.6 °C

Event center: -46.5°S 186.5°E

Area affected: 185108 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_2022-Oct-05_to_2022-Oct-07_186.5_-46.5

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 03 2022 to September 05 2022

Statistics over entire affected area:

• Mean temperature anomaly: -3.3 °C
• Mean temperature: 3.5 °C
• Minimum temperature anomaly: -5.1 °C
• Minimum temperature: 0.9 °C

Event center: -50.0°S 172.0°E

Area affected: 668556 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_2022-Sep-03_to_2022-Sep-05_172.0_-50.0

Download data: JSON

Event type: Cold spell

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

• New Zealand

Duration: 8 days

Time span: August 07 2022 to August 14 2022

Statistics over entire affected area:

• Mean temperature anomaly: -2.4 °C
• Mean temperature: 5.2 °C
• Minimum temperature anomaly: -7.2 °C
• Minimum temperature: -6.3 °C

Event center: -42.5°S 173.0°E

Area affected: 358815 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_2022-Aug-07_to_2022-Aug-14_173.0_-42.5