Category: Extremes affecting New Zealand

Heat wave occuring from March 19 2022 to March 26 2022 at -48.0°S 171.0°E

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: March 19 2022 to March 26 2022

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 12.6 °C
  • Maximum temperature anomaly: 6.0 °C
  • Maximum temperature: 18.6 °C

Event center: -48.0°S 171.0°E

Area affected: 1176535 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_2022-Mar-19_to_2022-Mar-26_171.0_-48.0

Heat wave occuring from February 21 2022 to February 23 2022 at -31.5°S 185.5°E

Download data: JSON

Event type: Heat wave

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

  • New Zealand

Duration: 3 days

Time span: February 21 2022 to February 23 2022

Statistics over entire affected area:

  • Mean temperature anomaly: 1.6 °C
  • Mean temperature: 23.5 °C
  • Maximum temperature anomaly: 2.1 °C
  • Maximum temperature: 24.5 °C

Event center: -31.5°S 185.5°E

Area affected: 141733 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_2022-Feb-21_to_2022-Feb-23_185.5_-31.5

Heat wave occuring from February 20 2022 to February 25 2022 at -35.0°S 173.0°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: February 20 2022 to February 25 2022

Statistics over entire affected area:

  • Mean temperature anomaly: 1.4 °C
  • Mean temperature: 21.6 °C
  • Maximum temperature anomaly: 2.3 °C
  • Maximum temperature: 22.2 °C

Event center: -35.0°S 173.0°E

Area affected: 108548 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_2022-Feb-20_to_2022-Feb-25_173.0_-35.0

Heat wave occuring from February 19 2022 to January 25 2023 at -11.0°S 150.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • Australia
  • Bangladesh
  • Bhutan
  • Cambodia
  • Canada
  • China
  • Christmas Island
  • Cook Islands
  • Fiji
  • French Polynesia
  • Hong Kong
  • India
  • Indonesia
  • Japan
  • Kazakhstan
  • Korea, Democratic People’s Republic of
  • Korea, Republic of
  • Kyrgyzstan
  • Lao People’s Democratic Republic
  • Malaysia
  • Maldives
  • Mongolia
  • Myanmar
  • Nepal
  • New Caledonia
  • New Zealand
  • Norfolk Island
  • Northern Mariana Islands
  • Oman
  • Pakistan
  • Papua New Guinea
  • Philippines
  • Russian Federation
  • Solomon Islands
  • Sri Lanka
  • Taiwan, Province of China
  • Thailand
  • Timor-Leste
  • Tonga
  • United States
  • Vanuatu
  • Viet Nam

Duration: 341 days

Time span: February 19 2022 to January 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.6 °C
  • Mean temperature: 19.0 °C
  • Maximum temperature anomaly: 33.4 °C
  • Maximum temperature: 37.4 °C

Event center: -11.0°S 150.0°E

Area affected: 154052228 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_2022-Feb-19_to_2023-Jan-25_150.0_-11.0

Heat wave occuring from November 23 2021 to November 25 2021 at -50.5°S 176.5°E

Download data: JSON

Event type: Heat wave

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

  • New Zealand

Duration: 3 days

Time span: November 23 2021 to November 25 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 9.1 °C
  • Maximum temperature anomaly: 2.9 °C
  • Maximum temperature: 13.1 °C

Event center: -50.5°S 176.5°E

Area affected: 419292 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_2021-Nov-23_to_2021-Nov-25_176.5_-50.5

Heat wave occuring from November 16 2021 to November 21 2021 at -49.0°S 181.0°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: November 16 2021 to November 21 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 11.2 °C
  • Maximum temperature anomaly: 3.7 °C
  • Maximum temperature: 18.6 °C

Event center: -49.0°S 181.0°E

Area affected: 1203301 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_2021-Nov-16_to_2021-Nov-21_181.0_-49.0

Heat wave occuring from October 05 2021 to October 08 2021 at -45.0°S 171.5°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 05 2021 to October 08 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 12.8 °C
  • Maximum temperature anomaly: 3.5 °C
  • Maximum temperature: 14.4 °C

Event center: -45.0°S 171.5°E

Area affected: 62861 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_2021-Oct-05_to_2021-Oct-08_171.5_-45.0

Heat wave occuring from October 02 2021 to October 08 2021 at -45.0°S 167.5°E

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: October 02 2021 to October 08 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.1 °C
  • Mean temperature: 13.7 °C
  • Maximum temperature anomaly: 5.8 °C
  • Maximum temperature: 17.8 °C

Event center: -45.0°S 167.5°E

Area affected: 675232 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_2021-Oct-02_to_2021-Oct-08_167.5_-45.0

Cold spell occuring from September 14 2021 to September 18 2021 at -42.0°S 174.0°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: September 14 2021 to September 18 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -2.7 °C
  • Mean temperature: 7.5 °C
  • Minimum temperature anomaly: -5.6 °C
  • Minimum temperature: 1.6 °C

Event center: -42.0°S 174.0°E

Area affected: 103956 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_2021-Sep-14_to_2021-Sep-18_174.0_-42.0

Heat wave occuring from August 19 2021 to September 09 2021 at -41.5°S 166.0°E

Download data: JSON

Event type: Heat wave

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

  • Antarctica
  • Australia
  • New Zealand

Duration: 22 days

Time span: August 19 2021 to September 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 10.0 °C
  • Mean temperature: -23.0 °C
  • Maximum temperature anomaly: 25.3 °C
  • Maximum temperature: 26.2 °C

Event center: -41.5°S 166.0°E

Area affected: 17185095 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_2021-Aug-19_to_2021-Sep-09_166.0_-41.5