Category: Extremes affecting New Zealand

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 7 days

Time span: August 31 2023 to September 06 2023

Statistics over entire affected area:

• Mean temperature anomaly: 1.6 °C
• Mean temperature: 17.5 °C
• Maximum temperature anomaly: 2.0 °C
• Maximum temperature: 19.6 °C

Event center: -34.5°S 173.5°E

Area affected: 100099 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_2023-Aug-31_to_2023-Sep-06_173.5_-34.5

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 14 days

Time span: August 29 2023 to September 11 2023

Statistics over entire affected area:

• Mean temperature anomaly: 2.1 °C
• Mean temperature: 11.4 °C
• Maximum temperature anomaly: 6.1 °C
• Maximum temperature: 15.6 °C

Event center: -45.5°S 167.0°E

Area affected: 1948715 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_2023-Aug-29_to_2023-Sep-11_167.0_-45.5

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 6 days

Time span: August 28 2023 to September 02 2023

Statistics over entire affected area:

• Mean temperature anomaly: 2.1 °C
• Mean temperature: 8.2 °C
• Maximum temperature anomaly: 3.5 °C
• Maximum temperature: 10.7 °C

Event center: -52.0°S 176.5°E

Area affected: 932994 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_2023-Aug-28_to_2023-Sep-02_176.5_-52.0

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 8 days

Time span: August 19 2023 to August 26 2023

Statistics over entire affected area:

• Mean temperature anomaly: 2.3 °C
• Mean temperature: 7.7 °C
• Maximum temperature anomaly: 3.9 °C
• Maximum temperature: 10.6 °C

Event center: -55.0°S 172.5°E

Area affected: 557396 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_2023-Aug-19_to_2023-Aug-26_172.5_-55.0

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 14 days

Time span: August 17 2023 to August 30 2023

Statistics over entire affected area:

• Mean temperature anomaly: 2.3 °C
• Mean temperature: 10.1 °C
• Maximum temperature anomaly: 4.6 °C
• Maximum temperature: 18.7 °C

Event center: -48.5°S 206.0°E

Area affected: 4841627 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_2023-Aug-17_to_2023-Aug-30_206.0_-48.5

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 5 days

Time span: July 28 2023 to August 01 2023

Statistics over entire affected area:

• Mean temperature anomaly: 1.9 °C
• Mean temperature: 9.5 °C
• Maximum temperature anomaly: 3.1 °C
• Maximum temperature: 12.2 °C

Event center: -48.0°S 171.0°E

Area affected: 159375 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_2023-Jul-28_to_2023-Aug-01_171.0_-48.0

Download data: JSON

Event type: Heat wave

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

• New Zealand

Duration: 5 days

Time span: June 07 2023 to June 11 2023

Statistics over entire affected area:

• Mean temperature anomaly: 2.3 °C
• Mean temperature: 8.7 °C
• Maximum temperature anomaly: 3.2 °C
• Maximum temperature: 10.3 °C

Event center: -52.5°S 171.5°E

Area affected: 134825 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_2023-Jun-07_to_2023-Jun-11_171.5_-52.5