Category: Extremes affecting New Zealand

Cold spell occuring from March 13 2024 to March 22 2024 at -38.0°S 175.5°E

Download data: JSON

Event type: Cold spell

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

  • New Zealand

Duration: 10 days

Time span: March 13 2024 to March 22 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.5 °C
  • Mean temperature: 14.7 °C
  • Minimum temperature anomaly: -6.5 °C
  • Minimum temperature: 5.5 °C

Event center: -38.0°S 175.5°E

Area affected: 508969 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_2024-Mar-13_to_2024-Mar-22_175.5_-38.0

Cold spell occuring from February 09 2024 to February 13 2024 at -41.0°S 172.0°E

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: February 09 2024 to February 13 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -2.2 °C
  • Mean temperature: 16.2 °C
  • Minimum temperature anomaly: -6.4 °C
  • Minimum temperature: 4.3 °C

Event center: -41.0°S 172.0°E

Area affected: 349664 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_2024-Feb-09_to_2024-Feb-13_172.0_-41.0

Cold spell occuring from January 07 2024 to February 07 2024 at -60.5°S 134.0°E

Download data: JSON

Event type: Cold spell

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

  • Antarctica
  • Australia
  • New Zealand

Duration: 32 days

Time span: January 07 2024 to February 07 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -1.8 °C
  • Mean temperature: 0.7 °C
  • Minimum temperature anomaly: -8.4 °C
  • Minimum temperature: -27.9 °C

Event center: -60.5°S 134.0°E

Area affected: 5787034 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_2024-Jan-07_to_2024-Feb-07_134.0_-60.5

Heat wave occuring from November 14 2023 to December 02 2023 at -36.5°S 186.5°E

Download data: JSON

Event type: Heat wave

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

  • New Zealand

Duration: 19 days

Time span: November 14 2023 to December 02 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.0 °C
  • Mean temperature: 14.5 °C
  • Maximum temperature anomaly: 3.8 °C
  • Maximum temperature: 20.6 °C

Event center: -36.5°S 186.5°E

Area affected: 4962961 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-Nov-14_to_2023-Dec-02_186.5_-36.5

Heat wave occuring from October 26 2023 to November 08 2023 at -32.5°S 180.5°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • New Zealand

Duration: 14 days

Time span: October 26 2023 to November 08 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.5 °C
  • Mean temperature: 8.7 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 22.5 °C

Event center: -32.5°S 180.5°E

Area affected: 6275399 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-Oct-26_to_2023-Nov-08_180.5_-32.5

Heat wave occuring from October 23 2023 to October 26 2023 at -46.5°S 181.5°E

Download data: JSON

Event type: Heat wave

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

  • New Zealand

Duration: 4 days

Time span: October 23 2023 to October 26 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 14.4 °C
  • Maximum temperature anomaly: 5.0 °C
  • Maximum temperature: 19.0 °C

Event center: -46.5°S 181.5°E

Area affected: 386013 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-Oct-23_to_2023-Oct-26_181.5_-46.5

Heat wave occuring from October 12 2023 to October 23 2023 at -40.5°S 193.5°E

Download data: JSON

Event type: Heat wave

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

  • New Zealand

Duration: 12 days

Time span: October 12 2023 to October 23 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.0 °C
  • Mean temperature: 13.7 °C
  • Maximum temperature anomaly: 4.9 °C
  • Maximum temperature: 23.4 °C

Event center: -40.5°S 193.5°E

Area affected: 4790750 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-Oct-12_to_2023-Oct-23_193.5_-40.5

Heat wave occuring from October 02 2023 to October 14 2023 at -59.0°S 208.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • Australia
  • New Zealand

Duration: 13 days

Time span: October 02 2023 to October 14 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.4 °C
  • Mean temperature: 2.3 °C
  • Maximum temperature anomaly: 9.2 °C
  • Maximum temperature: 15.9 °C

Event center: -59.0°S 208.0°E

Area affected: 5782954 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-Oct-02_to_2023-Oct-14_208.0_-59.0

Cold spell occuring from September 11 2023 to September 14 2023 at -55.5°S 167.0°E

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

Heat wave occuring from September 01 2023 to September 06 2023 at -36.0°S 175.5°E

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: September 01 2023 to September 06 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 1.6 °C
  • Mean temperature: 15.3 °C
  • Maximum temperature anomaly: 2.3 °C
  • Maximum temperature: 16.3 °C

Event center: -36.0°S 175.5°E

Area affected: 67483 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-Sep-01_to_2023-Sep-06_175.5_-36.0