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: 3 days

Time span: June 14 2022 to June 16 2022

Statistics over entire affected area:

• Mean temperature anomaly: -2.3 °C
• Mean temperature: 4.6 °C
• Minimum temperature anomaly: -3.4 °C
• Minimum temperature: 3.2 °C

Event center: -49.5°S 177.0°E

Area affected: 67780 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-Jun-14_to_2022-Jun-16_177.0_-49.5

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

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: April 25 2021 to April 27 2021

Statistics over entire affected area:

• Mean temperature anomaly: -3.1 °C
• Mean temperature: 8.2 °C
• Minimum temperature anomaly: -9.4 °C
• Minimum temperature: -5.7 °C

Event center: -44.5°S 168.5°E

Area affected: 170718 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-Apr-25_to_2021-Apr-27_168.5_-44.5

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: February 17 2021 to February 20 2021

Statistics over entire affected area:

• Mean temperature anomaly: -1.7 °C
• Mean temperature: 19.1 °C
• Minimum temperature anomaly: -3.2 °C
• Minimum temperature: 17.1 °C

Event center: -35.0°S 178.5°E

Area affected: 167828 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-Feb-17_to_2021-Feb-20_178.5_-35.0

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 16 2021 to February 20 2021

Statistics over entire affected area:

• Mean temperature anomaly: -2.5 °C
• Mean temperature: 16.1 °C
• Minimum temperature anomaly: -5.1 °C
• Minimum temperature: 9.9 °C

Event center: -38.5°S 174.0°E

Area affected: 144262 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-Feb-16_to_2021-Feb-20_174.0_-38.5

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: January 28 2021 to January 31 2021

Statistics over entire affected area:

• Mean temperature anomaly: -2.9 °C
• Mean temperature: 14.8 °C
• Minimum temperature anomaly: -6.8 °C
• Minimum temperature: 8.9 °C

Event center: -39.5°S 173.5°E

Area affected: 97439 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-Jan-28_to_2021-Jan-31_173.5_-39.5

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: January 18 2021 to January 21 2021

Statistics over entire affected area:

• Mean temperature anomaly: -3.5 °C
• Mean temperature: 12.2 °C
• Minimum temperature anomaly: -8.3 °C
• Minimum temperature: 0.5 °C

Event center: -43.5°S 170.5°E

Area affected: 156757 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-Jan-18_to_2021-Jan-21_170.5_-43.5

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: December 25 2020 to December 29 2020

Statistics over entire affected area:

• Mean temperature anomaly: -2.5 °C
• Mean temperature: 15.3 °C
• Minimum temperature anomaly: -8.2 °C
• Minimum temperature: 5.0 °C

Event center: -39.5°S 175.5°E

Area affected: 696630 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-Dec-25_to_2020-Dec-29_175.5_-39.5