Category: Extremes affecting New Zealand

Heat wave occuring from February 15 2020 to February 18 2020 at -43.0°S 172.5°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: February 15 2020 to February 18 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 18.7 °C
  • Maximum temperature anomaly: 6.8 °C
  • Maximum temperature: 23.6 °C

Event center: -43.0°S 172.5°E

Area affected: 60491 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_2020-Feb-15_to_2020-Feb-18_172.5_-43.0

Cold spell occuring from February 06 2020 to February 10 2020 at -43.5°S 169.0°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 06 2020 to February 10 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -2.0 °C
  • Mean temperature: 15.5 °C
  • Minimum temperature anomaly: -2.7 °C
  • Minimum temperature: 13.1 °C

Event center: -43.5°S 169.0°E

Area affected: 114351 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_2020-Feb-06_to_2020-Feb-10_169.0_-43.5

Heat wave occuring from January 23 2020 to February 07 2020 at -38.0°S 178.0°E

Download data: JSON

Event type: Heat wave

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

  • New Zealand

Duration: 16 days

Time span: January 23 2020 to February 07 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 19.1 °C
  • Maximum temperature anomaly: 7.8 °C
  • Maximum temperature: 26.6 °C

Event center: -38.0°S 178.0°E

Area affected: 3360233 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_2020-Jan-23_to_2020-Feb-07_178.0_-38.0

Heat wave occuring from January 22 2020 to January 30 2020 at -55.0°S 177.0°E

Download data: JSON

Event type: Heat wave

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

  • New Zealand

Duration: 9 days

Time span: January 22 2020 to January 30 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 1.8 °C
  • Mean temperature: 9.5 °C
  • Maximum temperature anomaly: 3.2 °C
  • Maximum temperature: 13.8 °C

Event center: -55.0°S 177.0°E

Area affected: 1186096 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_2020-Jan-22_to_2020-Jan-30_177.0_-55.0

Heat wave occuring from January 19 2020 to February 03 2020 at -41.5°S 173.5°E

Download data: JSON

Event type: Heat wave

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

  • New Zealand

Duration: 16 days

Time span: January 19 2020 to February 03 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 4.7 °C
  • Mean temperature: 20.0 °C
  • Maximum temperature anomaly: 10.0 °C
  • Maximum temperature: 27.3 °C

Event center: -41.5°S 173.5°E

Area affected: 116829 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_2020-Jan-19_to_2020-Feb-03_173.5_-41.5

Cold spell occuring from January 14 2020 to January 18 2020 at -39.0°S 177.0°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: January 14 2020 to January 18 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -2.3 °C
  • Mean temperature: 15.9 °C
  • Minimum temperature anomaly: -5.8 °C
  • Minimum temperature: 9.0 °C

Event center: -39.0°S 177.0°E

Area affected: 250853 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_2020-Jan-14_to_2020-Jan-18_177.0_-39.0

Cold spell occuring from January 12 2020 to January 18 2020 at -39.5°S 173.0°E

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: January 12 2020 to January 18 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -2.0 °C
  • Mean temperature: 14.7 °C
  • Minimum temperature anomaly: -4.3 °C
  • Minimum temperature: 11.9 °C

Event center: -39.5°S 173.0°E

Area affected: 147244 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_2020-Jan-12_to_2020-Jan-18_173.0_-39.5

Cold spell occuring from January 03 2020 to January 11 2020 at -42.5°S 170.5°E

Download data: JSON

Event type: Cold spell

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

  • New Zealand

Duration: 9 days

Time span: January 03 2020 to January 11 2020

Statistics over entire affected area:

  • Mean temperature anomaly: -2.3 °C
  • Mean temperature: 13.5 °C
  • Minimum temperature anomaly: -5.0 °C
  • Minimum temperature: 6.7 °C

Event center: -42.5°S 170.5°E

Area affected: 113260 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_2020-Jan-03_to_2020-Jan-11_170.5_-42.5