Category: Extremes affecting Svalbard and Jan Mayen

Heat wave occuring from January 08 2026 to February 05 2026 at 58.0°N 142.5°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Russian Federation
  • Svalbard and Jan Mayen
  • United States

Duration: 29 days

Time span: January 08 2026 to February 05 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 11.4 °C
  • Mean temperature: -10.1 °C
  • Maximum temperature anomaly: 32.3 °C
  • Maximum temperature: 17.2 °C

Event center: 58.0°N 142.5°E

Area affected: 11950817 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_2026-Jan-08_to_2026-Feb-05_142.5_58.0

Cold spell occuring from December 27 2025 to January 05 2026 at 79.0°N 1.5°E

Download data: JSON

Event type: Cold spell

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

  • Svalbard and Jan Mayen

Duration: 10 days

Time span: December 27 2025 to January 05 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -7.8 °C
  • Mean temperature: -13.7 °C
  • Minimum temperature anomaly: -12.8 °C
  • Minimum temperature: -22.3 °C

Event center: 79.0°N 1.5°E

Area affected: 98666 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_2025-Dec-27_to_2026-Jan-05_1.5_79.0

Heat wave occuring from November 06 2025 to November 09 2025 at 78.0°N 38.0°E

Download data: JSON

Event type: Heat wave

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

  • Svalbard and Jan Mayen

Duration: 4 days

Time span: November 06 2025 to November 09 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.7 °C
  • Mean temperature: 0.4 °C
  • Maximum temperature anomaly: 8.7 °C
  • Maximum temperature: 1.9 °C

Event center: 78.0°N 38.0°E

Area affected: 98814 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_2025-Nov-06_to_2025-Nov-09_38.0_78.0

Cold spell occuring from June 07 2025 to July 07 2025 at 82.5°N 50.0°E

Download data: JSON

Event type: Cold spell

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

  • Russian Federation
  • Svalbard and Jan Mayen

Duration: 31 days

Time span: June 07 2025 to July 07 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -1.0 °C
  • Mean temperature: -0.4 °C
  • Minimum temperature anomaly: -3.4 °C
  • Minimum temperature: -2.7 °C

Event center: 82.5°N 50.0°E

Area affected: 642392 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_2025-Jun-07_to_2025-Jul-07_50.0_82.5

Cold spell occuring from May 26 2025 to June 03 2025 at 73.5°N 347.0°E

Download data: JSON

Event type: Cold spell

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

  • Greenland
  • Svalbard and Jan Mayen

Duration: 9 days

Time span: May 26 2025 to June 03 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -2.6 °C
  • Mean temperature: -4.5 °C
  • Minimum temperature anomaly: -5.9 °C
  • Minimum temperature: -13.6 °C

Event center: 73.5°N 347.0°E

Area affected: 227570 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_2025-May-26_to_2025-Jun-03_347.0_73.5

Cold spell occuring from April 20 2025 to April 29 2025 at 75.0°N 21.0°E

Download data: JSON

Event type: Cold spell

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

  • Norway
  • Russian Federation
  • Svalbard and Jan Mayen

Duration: 10 days

Time span: April 20 2025 to April 29 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.0 °C
  • Mean temperature: -6.5 °C
  • Minimum temperature anomaly: -8.6 °C
  • Minimum temperature: -16.4 °C

Event center: 75.0°N 21.0°E

Area affected: 348423 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_2025-Apr-20_to_2025-Apr-29_21.0_75.0

Cold spell occuring from April 06 2025 to April 17 2025 at 74.5°N 351.0°E

Download data: JSON

Event type: Cold spell

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

  • Greenland
  • Norway
  • Svalbard and Jan Mayen

Duration: 12 days

Time span: April 06 2025 to April 17 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.7 °C
  • Mean temperature: -8.6 °C
  • Minimum temperature anomaly: -11.5 °C
  • Minimum temperature: -27.2 °C

Event center: 75.5°N 0.0°E

Area affected: 1031928 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_2025-Apr-06_to_2025-Apr-17_351.0_74.5

Cold spell occuring from June 16 2024 to June 24 2024 at 79.0°N 24.0°E

Download data: JSON

Event type: Cold spell

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

  • Svalbard and Jan Mayen

Duration: 9 days

Time span: June 16 2024 to June 24 2024

Statistics over entire affected area:

  • Mean temperature anomaly: -1.5 °C
  • Mean temperature: -1.0 °C
  • Minimum temperature anomaly: -3.4 °C
  • Minimum temperature: -3.0 °C

Event center: 79.0°N 24.0°E

Area affected: 80786 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-Jun-16_to_2024-Jun-24_24.0_79.0

Heat wave occuring from June 11 2024 to July 05 2024 at 80.0°N 13.5°E

Download data: JSON

Event type: Heat wave

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

  • Finland
  • Greenland
  • Norway
  • Russian Federation
  • Svalbard and Jan Mayen
  • Sweden

Duration: 25 days

Time span: June 11 2024 to July 05 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 6.6 °C
  • Maximum temperature anomaly: 9.2 °C
  • Maximum temperature: 19.1 °C

Event center: 80.0°N 13.5°E

Area affected: 1851783 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_2024-Jun-11_to_2024-Jul-05_13.5_80.0

Heat wave occuring from May 02 2024 to May 14 2024 at 80.0°N 90.0°E

Download data: JSON

Event type: Heat wave

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

  • Greenland
  • Russian Federation
  • Svalbard and Jan Mayen

Duration: 13 days

Time span: May 02 2024 to May 14 2024

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: -3.4 °C
  • Maximum temperature anomaly: 9.6 °C
  • Maximum temperature: 4.5 °C

Event center: 80.0°N 90.0°E

Area affected: 1451744 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_2024-May-02_to_2024-May-14_90.0_80.0