Category: Extremes affecting Slovakia

(ongoing) Cold spell occuring from April 26 2026 to May 03 2026 at 49.0°N 32.0°E

Download data: JSON

Event type: Cold spell

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

  • Albania
  • Belarus
  • Bosnia and Herzegovina
  • Bulgaria
  • Croatia
  • Czech Republic
  • Greece
  • Hungary
  • Kazakhstan
  • Latvia
  • Lithuania
  • Moldova
  • Montenegro
  • North Macedonia
  • Poland
  • Romania
  • Russian Federation
  • Serbia
  • Slovakia
  • Slovenia
  • Turkiye
  • Ukraine

Duration: 8 days

Time span: April 26 2026 to May 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -6.7 °C
  • Mean temperature: 5.9 °C
  • Minimum temperature anomaly: -10.7 °C
  • Minimum temperature: -0.6 °C

Event center: 49.0°N 32.0°E

Area affected: 3624817 km$^2$


Fig. 1: unavailable since event is ongoing.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Apr-26_to_2026-May-03_32.0_49.0

(ongoing) Heat wave occuring from October 16 2022 to May 03 2026 at 10.5°N 294.0°E

Download data: JSON

Event type: Heat wave

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

  • Afghanistan
  • Albania
  • Algeria
  • Andorra
  • Angola
  • Antarctica
  • Argentina
  • Armenia
  • Aruba
  • Australia
  • Austria
  • Azerbaijan
  • Azores
  • Bahamas
  • Bahrain
  • Bangladesh
  • Belarus
  • Belgium
  • Belize
  • Benin
  • Bhutan
  • Bolivia
  • Bosnia and Herzegovina
  • Botswana
  • Brazil
  • Brunei Darussalam
  • Bulgaria
  • Burkina Faso
  • Burundi
  • Cabo Verde
  • Cambodia
  • Cameroon
  • Canada
  • Canarias
  • Central African Republic
  • Chad
  • Chile
  • China
  • Colombia
  • Congo
  • Congo DRC
  • Costa Rica
  • Croatia
  • Cuba
  • Cyprus
  • Czech Republic
  • Côte d’Ivoire
  • Denmark
  • Djibouti
  • Dominican Republic
  • Ecuador
  • Egypt
  • El Salvador
  • Equatorial Guinea
  • Eritrea
  • Estonia
  • Eswatini
  • Ethiopia
  • Falkland Islands
  • Faroe Islands
  • Fiji
  • Finland
  • France
  • French Guiana
  • French Southern Territories
  • Gabon
  • Gambia
  • Georgia
  • Germany
  • Ghana
  • Greece
  • Greenland
  • Guatemala
  • Guinea
  • Guinea-Bissau
  • Guyana
  • Haiti
  • Honduras
  • Hungary
  • Iceland
  • India
  • Indonesia
  • Iran
  • Iraq
  • Ireland
  • Israel
  • Italy
  • Jamaica
  • Japan
  • Jordan
  • Kazakhstan
  • Kenya
  • Kuwait
  • Kyrgyzstan
  • Laos
  • Latvia
  • Lebanon
  • Lesotho
  • Liberia
  • Libya
  • Lithuania
  • Luxembourg
  • Madagascar
  • Madeira
  • Malawi
  • Malaysia
  • Mali
  • Martinique
  • Mauritania
  • Mauritius
  • Mexico
  • Moldova
  • Mongolia
  • Montenegro
  • Morocco
  • Mozambique
  • Myanmar
  • Namibia
  • Nepal
  • Netherlands
  • New Caledonia
  • New Zealand
  • Nicaragua
  • Niger
  • Nigeria
  • North Korea
  • North Macedonia
  • Norway
  • Oman
  • Pakistan
  • Palau
  • Palestinian Territory
  • Panama
  • Papua New Guinea
  • Paraguay
  • Peru
  • Philippines
  • Poland
  • Portugal
  • Puerto Rico
  • Qatar
  • Romania
  • Russian Federation
  • Rwanda
  • Réunion
  • Saint Eustatius
  • Saint Lucia
  • Samoa
  • Saudi Arabia
  • Senegal
  • Serbia
  • Sierra Leone
  • Slovakia
  • Slovenia
  • Solomon Islands
  • Somalia
  • South Africa
  • South Georgia and the South Sandwich Islands
  • South Korea
  • South Sudan
  • Spain
  • Sri Lanka
  • Sudan
  • Suriname
  • Sweden
  • Switzerland
  • Syria
  • Tajikistan
  • Tanzania
  • Thailand
  • Timor-Leste
  • Togo
  • Tunisia
  • Turkiye
  • Turkmenistan
  • Turks and Caicos Islands
  • Uganda
  • Ukraine
  • United Arab Emirates
  • United Kingdom
  • United States
  • Uruguay
  • Uzbekistan
  • Vanuatu
  • Venezuela
  • Vietnam
  • Yemen
  • Zambia
  • Zimbabwe

Duration: 1296 days

Time span: October 16 2022 to May 03 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: 18.1 °C
  • Maximum temperature anomaly: 33.2 °C
  • Maximum temperature: 46.7 °C

Event center: 10.5°N 294.0°E

Area affected: 509588681 km$^2$


Fig. 1: unavailable since event is ongoing.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2022-Oct-16_to_2026-May-03_294.0_10.5

Heat wave occuring from February 23 2026 to April 16 2026 at 46.0°N 52.0°E

Download data: JSON

Event type: Heat wave

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

  • Afghanistan
  • Austria
  • Azerbaijan
  • Belarus
  • Bhutan
  • China
  • Czech Republic
  • Denmark
  • Estonia
  • Finland
  • Georgia
  • Germany
  • Greenland
  • Hungary
  • India
  • Iran
  • Italy
  • Kazakhstan
  • Kyrgyzstan
  • Latvia
  • Lithuania
  • Mongolia
  • Nepal
  • Norway
  • Pakistan
  • Poland
  • Romania
  • Russian Federation
  • Slovakia
  • Sweden
  • Tajikistan
  • Turkiye
  • Turkmenistan
  • Ukraine
  • United Kingdom
  • Uzbekistan

Duration: 53 days

Time span: February 23 2026 to April 16 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 10.3 °C
  • Mean temperature: -4.0 °C
  • Maximum temperature anomaly: 22.3 °C
  • Maximum temperature: 27.7 °C

Event center: 46.0°N 52.0°E

Area affected: 23119180 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-Feb-23_to_2026-Apr-16_52.0_46.0

Heat wave occuring from February 12 2026 to February 15 2026 at 46.5°N 25.0°E

Download data: JSON

Event type: Heat wave

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

  • Romania
  • Slovakia
  • Ukraine

Duration: 4 days

Time span: February 12 2026 to February 15 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 6.8 °C
  • Mean temperature: 5.2 °C
  • Maximum temperature anomaly: 8.9 °C
  • Maximum temperature: 10.0 °C

Event center: 46.5°N 25.0°E

Area affected: 90458 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-Feb-12_to_2026-Feb-15_25.0_46.5

Heat wave occuring from February 04 2026 to February 08 2026 at 46.5°N 22.5°E

Download data: JSON

Event type: Heat wave

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

  • Romania
  • Slovakia
  • Ukraine

Duration: 5 days

Time span: February 04 2026 to February 08 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 6.9 °C
  • Mean temperature: 5.1 °C
  • Maximum temperature anomaly: 10.2 °C
  • Maximum temperature: 8.8 °C

Event center: 46.5°N 22.5°E

Area affected: 50132 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-Feb-04_to_2026-Feb-08_22.5_46.5

Cold spell occuring from January 09 2026 to January 23 2026 at 51.5°N 26.0°E

Download data: JSON

Event type: Cold spell

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

  • Austria
  • Belarus
  • Bulgaria
  • Croatia
  • Estonia
  • Greece
  • Hungary
  • Kazakhstan
  • Latvia
  • Lithuania
  • Moldova, Republic of
  • Poland
  • Romania
  • Russian Federation
  • Serbia
  • Slovakia
  • Slovenia
  • Türkiye
  • Ukraine

Duration: 15 days

Time span: January 09 2026 to January 23 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -9.4 °C
  • Mean temperature: -11.7 °C
  • Minimum temperature anomaly: -18.6 °C
  • Minimum temperature: -22.5 °C

Event center: 51.5°N 26.0°E

Area affected: 2552543 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_2026-Jan-09_to_2026-Jan-23_26.0_51.5

Cold spell occuring from January 08 2026 to January 14 2026 at 48.0°N 21.0°E

Download data: JSON

Event type: Cold spell

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

  • Hungary
  • Poland
  • Romania
  • Slovakia
  • Ukraine

Duration: 7 days

Time span: January 08 2026 to January 14 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -7.5 °C
  • Mean temperature: -7.8 °C
  • Minimum temperature anomaly: -12.4 °C
  • Minimum temperature: -13.2 °C

Event center: 48.0°N 21.0°E

Area affected: 114485 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_2026-Jan-08_to_2026-Jan-14_21.0_48.0

Heat wave occuring from December 17 2025 to December 23 2025 at 49.0°N 23.0°E

Download data: JSON

Event type: Heat wave

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

  • Hungary
  • Poland
  • Slovakia
  • Ukraine

Duration: 7 days

Time span: December 17 2025 to December 23 2025

Statistics over entire affected area:

  • Mean temperature anomaly: 6.5 °C
  • Mean temperature: 4.1 °C
  • Maximum temperature anomaly: 9.4 °C
  • Maximum temperature: 7.8 °C

Event center: 49.0°N 23.0°E

Area affected: 69291 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-Dec-17_to_2025-Dec-23_23.0_49.0

Cold spell occuring from September 29 2025 to October 10 2025 at 40.5°N 17.5°E

Download data: JSON

Event type: Cold spell

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

  • Albania
  • Austria
  • Bosnia and Herzegovina
  • Bulgaria
  • Croatia
  • Czechia
  • France
  • Germany
  • Greece
  • Hungary
  • Italy
  • Moldova, Republic of
  • Montenegro
  • North Macedonia
  • Poland
  • Romania
  • Serbia
  • Slovakia
  • Slovenia
  • Ukraine

Duration: 12 days

Time span: September 29 2025 to October 10 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -5.1 °C
  • Mean temperature: 10.0 °C
  • Minimum temperature anomaly: -12.5 °C
  • Minimum temperature: -4.1 °C

Event center: 40.5°N 17.5°E

Area affected: 2031067 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-Sep-29_to_2025-Oct-10_17.5_40.5

Cold spell occuring from August 19 2025 to August 28 2025 at 60.0°N 19.0°E

Download data: JSON

Event type: Cold spell

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

  • Belarus
  • Denmark
  • Estonia
  • Finland
  • Germany
  • Hungary
  • Latvia
  • Lithuania
  • Norway
  • Poland
  • Romania
  • Russian Federation
  • Slovakia
  • Sweden
  • Ukraine

Duration: 10 days

Time span: August 19 2025 to August 28 2025

Statistics over entire affected area:

  • Mean temperature anomaly: -4.3 °C
  • Mean temperature: 11.1 °C
  • Minimum temperature anomaly: -8.3 °C
  • Minimum temperature: 1.3 °C

Event center: 60.0°N 19.0°E

Area affected: 3064720 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-Aug-19_to_2025-Aug-28_19.0_60.0