Category: Extremes affecting Norway

Cold spell occuring from October 18 2023 to October 24 2023 at 66.5°N 19.5°E

Download data: JSON

Event type: Cold spell

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

  • Finland
  • Norway
  • Sweden

Duration: 7 days

Time span: October 18 2023 to October 24 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -7.1 °C
  • Mean temperature: -7.7 °C
  • Minimum temperature anomaly: -12.5 °C
  • Minimum temperature: -15.0 °C

Event center: 66.5°N 19.5°E

Area affected: 180263 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-Oct-18_to_2023-Oct-24_19.5_66.5

Cold spell occuring from September 29 2023 to October 09 2023 at 77.0°N 356.0°E

Download data: JSON

Event type: Cold spell

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

  • Norway
  • Svalbard and Jan Mayen
  • Sweden

Duration: 11 days

Time span: September 29 2023 to October 09 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.7 °C
  • Mean temperature: 1.3 °C
  • Minimum temperature anomaly: -9.7 °C
  • Minimum temperature: -13.3 °C

Event center: 79.0°N 1.5°E

Area affected: 876173 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-29_to_2023-Oct-09_356.0_77.0

Heat wave occuring from August 26 2023 to August 29 2023 at 68.0°N 14.0°E

Download data: JSON

Event type: Heat wave

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

  • Norway

Duration: 4 days

Time span: August 26 2023 to August 29 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.7 °C
  • Mean temperature: 14.3 °C
  • Maximum temperature anomaly: 4.4 °C
  • Maximum temperature: 16.4 °C

Event center: 68.0°N 14.0°E

Area affected: 174133 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-Aug-26_to_2023-Aug-29_14.0_68.0

Cold spell occuring from August 03 2023 to August 20 2023 at 58.0°N 17.0°E

Download data: JSON

Event type: Cold spell

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

  • Albania
  • Austria
  • Belgium
  • Bosnia and Herzegovina
  • Bulgaria
  • Croatia
  • Czechia
  • Denmark
  • Finland
  • France
  • Germany
  • Greece
  • Hungary
  • Italy
  • Latvia
  • Lithuania
  • Luxembourg
  • Montenegro
  • Netherlands
  • North Macedonia
  • Norway
  • Poland
  • Romania
  • Russian Federation
  • Serbia
  • Slovakia
  • Slovenia
  • Sweden
  • Switzerland
  • Ukraine
  • United Kingdom

Duration: 18 days

Time span: August 03 2023 to August 20 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 15.9 °C
  • Minimum temperature anomaly: -9.0 °C
  • Minimum temperature: 1.6 °C

Event center: 58.0°N 17.0°E

Area affected: 2653339 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-Aug-03_to_2023-Aug-20_17.0_58.0

Cold spell occuring from July 20 2023 to July 25 2023 at 68.5°N 24.5°E

Download data: JSON

Event type: Cold spell

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

  • Finland
  • Norway
  • Sweden

Duration: 6 days

Time span: July 20 2023 to July 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.7 °C
  • Mean temperature: 10.2 °C
  • Minimum temperature anomaly: -6.0 °C
  • Minimum temperature: 7.8 °C

Event center: 68.5°N 24.5°E

Area affected: 125726 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-Jul-20_to_2023-Jul-25_24.5_68.5

Cold spell occuring from July 18 2023 to July 24 2023 at 58.0°N 8.0°E

Download data: JSON

Event type: Cold spell

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

  • Denmark
  • Norway
  • Sweden

Duration: 7 days

Time span: July 18 2023 to July 24 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -3.4 °C
  • Mean temperature: 12.7 °C
  • Minimum temperature anomaly: -6.1 °C
  • Minimum temperature: 4.5 °C

Event center: 58.0°N 8.0°E

Area affected: 176002 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-Jul-18_to_2023-Jul-24_8.0_58.0

Cold spell occuring from April 22 2023 to May 06 2023 at 62.5°N 13.5°E

Download data: JSON

Event type: Cold spell

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

  • Finland
  • Iceland
  • Norway
  • Sweden
  • United Kingdom

Duration: 15 days

Time span: April 22 2023 to May 06 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -4.0 °C
  • Mean temperature: 0.4 °C
  • Minimum temperature anomaly: -8.4 °C
  • Minimum temperature: -10.6 °C

Event center: 62.5°N 13.5°E

Area affected: 1985165 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-Apr-22_to_2023-May-06_13.5_62.5

Heat wave occuring from April 15 2023 to April 22 2023 at 56.0°N 8.0°E

Download data: JSON

Event type: Heat wave

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

  • Denmark
  • Norway

Duration: 8 days

Time span: April 15 2023 to April 22 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 8.6 °C
  • Maximum temperature anomaly: 6.3 °C
  • Maximum temperature: 10.7 °C

Event center: 56.0°N 8.0°E

Area affected: 205429 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-Apr-15_to_2023-Apr-22_8.0_56.0

Heat wave occuring from April 07 2023 to April 22 2023 at 64.5°N 359.5°E

Download data: JSON

Event type: Heat wave

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

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

Duration: 16 days

Time span: April 07 2023 to April 22 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 7.1 °C
  • Mean temperature: -5.9 °C
  • Maximum temperature anomaly: 14.9 °C
  • Maximum temperature: 9.1 °C

Event center: 64.5°N 359.5°E

Area affected: 4517853 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-Apr-07_to_2023-Apr-22_359.5_64.5

Heat wave occuring from April 06 2023 to April 11 2023 at 68.5°N 41.5°E

Download data: JSON

Event type: Heat wave

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

  • Finland
  • Norway
  • Russian Federation

Duration: 6 days

Time span: April 06 2023 to April 11 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.8 °C
  • Mean temperature: 2.7 °C
  • Maximum temperature anomaly: 7.7 °C
  • Maximum temperature: 4.9 °C

Event center: 68.5°N 41.5°E

Area affected: 130729 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-Apr-06_to_2023-Apr-11_41.5_68.5