Category: Extremes affecting Hong Kong

Cold spell occuring from October 15 2021 to October 25 2021 at 28.0°N 116.5°E

Download data: JSON

Event type: Cold spell

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

  • China
  • Hong Kong
  • Japan
  • Korea, Democratic People’s Republic of
  • Korea, Republic of
  • Lao People’s Democratic Republic
  • Thailand
  • Viet Nam

Duration: 11 days

Time span: October 15 2021 to October 25 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.1 °C
  • Mean temperature: 14.7 °C
  • Minimum temperature anomaly: -9.1 °C
  • Minimum temperature: -0.8 °C

Event center: 28.0°N 116.5°E

Area affected: 4217639 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-Oct-15_to_2021-Oct-25_116.5_28.0

Heat wave occuring from July 07 2021 to July 17 2021 at 18.0°N 118.5°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Hong Kong
  • Philippines
  • Taiwan, Province of China

Duration: 11 days

Time span: July 07 2021 to July 17 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 1.3 °C
  • Mean temperature: 29.3 °C
  • Maximum temperature anomaly: 3.2 °C
  • Maximum temperature: 32.7 °C

Event center: 18.0°N 118.5°E

Area affected: 627159 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_2021-Jul-07_to_2021-Jul-17_118.5_18.0

Heat wave occuring from June 08 2021 to July 15 2021 at 13.0°N 104.5°E

Download data: JSON

Event type: Heat wave

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

  • Bangladesh
  • Cambodia
  • China
  • Hong Kong
  • India
  • Lao People’s Democratic Republic
  • Myanmar
  • Philippines
  • Taiwan, Province of China
  • Thailand
  • Viet Nam

Duration: 38 days

Time span: June 08 2021 to July 15 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 26.4 °C
  • Maximum temperature anomaly: 7.0 °C
  • Maximum temperature: 35.2 °C

Event center: 13.0°N 104.5°E

Area affected: 7834853 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_2021-Jun-08_to_2021-Jul-15_104.5_13.0

Heat wave occuring from May 03 2021 to June 20 2021 at 17.5°N 121.5°E

Download data: JSON

Event type: Heat wave

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

  • Bangladesh
  • Bhutan
  • Cambodia
  • China
  • Hong Kong
  • India
  • Japan
  • Korea, Democratic People’s Republic of
  • Korea, Republic of
  • Lao People’s Democratic Republic
  • Myanmar
  • Nepal
  • Philippines
  • Russian Federation
  • Taiwan, Province of China
  • Thailand
  • Viet Nam

Duration: 49 days

Time span: May 03 2021 to June 20 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.3 °C
  • Mean temperature: 25.5 °C
  • Maximum temperature anomaly: 9.3 °C
  • Maximum temperature: 37.0 °C

Event center: 17.5°N 121.5°E

Area affected: 16735482 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_2021-May-03_to_2021-Jun-20_121.5_17.5

Heat wave occuring from March 28 2021 to November 10 2022 at 1.0°N 350.0°E

Download data: JSON

Event type: Heat wave

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

  • Afghanistan
  • Albania
  • Algeria
  • Andorra
  • Angola
  • Argentina
  • Armenia
  • Australia
  • Austria
  • Azerbaijan
  • Bahrain
  • Bangladesh
  • Belarus
  • Belgium
  • Benin
  • Bhutan
  • Bolivia, Plurinational State of
  • Bonaire, Sint Eustatius and Saba
  • Bosnia and Herzegovina
  • Botswana
  • Brazil
  • Brunei Darussalam
  • Bulgaria
  • Burkina Faso
  • Burundi
  • Cabo Verde
  • Cambodia
  • Cameroon
  • Canada
  • Central African Republic
  • Chad
  • Chile
  • China
  • Christmas Island
  • Colombia
  • Congo
  • Congo, The Democratic Republic of the
  • Cook Islands
  • Croatia
  • Cyprus
  • Czechia
  • Côte d’Ivoire
  • Denmark
  • Djibouti
  • Dominican Republic
  • Ecuador
  • Egypt
  • Equatorial Guinea
  • Eritrea
  • Estonia
  • Eswatini
  • Ethiopia
  • Fiji
  • Finland
  • France
  • French Guiana
  • French Polynesia
  • French Southern Territories
  • Gabon
  • Gambia
  • Georgia
  • Germany
  • Ghana
  • Greece
  • Greenland
  • Guinea
  • Guinea-Bissau
  • Guyana
  • Haiti
  • Hong Kong
  • Hungary
  • Iceland
  • India
  • Indonesia
  • Iran, Islamic Republic of
  • Iraq
  • Ireland
  • Israel
  • Italy
  • Japan
  • Jordan
  • Kazakhstan
  • Kenya
  • Korea, Democratic People’s Republic of
  • Korea, Republic of
  • Kuwait
  • Kyrgyzstan
  • Lao People’s Democratic Republic
  • Latvia
  • Lebanon
  • Lesotho
  • Liberia
  • Libya
  • Lithuania
  • Luxembourg
  • Madagascar
  • Malawi
  • Malaysia
  • Maldives
  • Mali
  • Martinique
  • Mauritania
  • Mauritius
  • Mexico
  • Moldova, Republic of
  • Mongolia
  • Montenegro
  • Morocco
  • Mozambique
  • Myanmar
  • Namibia
  • Nepal
  • Netherlands
  • New Caledonia
  • New Zealand
  • Niger
  • Nigeria
  • Norfolk Island
  • North Macedonia
  • Northern Mariana Islands
  • Norway
  • Oman
  • Pakistan
  • Palau
  • Papua New Guinea
  • Paraguay
  • Peru
  • Philippines
  • Poland
  • Portugal
  • Puerto Rico
  • Qatar
  • Romania
  • Russian Federation
  • Rwanda
  • Saint Lucia
  • Samoa
  • Saudi Arabia
  • Senegal
  • Serbia
  • Seychelles
  • Sierra Leone
  • Sint Maarten (Dutch part)
  • Slovakia
  • Slovenia
  • Solomon Islands
  • Somalia
  • South Africa
  • South Sudan
  • Spain
  • Sri Lanka
  • Sudan
  • Suriname
  • Svalbard and Jan Mayen
  • Sweden
  • Switzerland
  • Syrian Arab Republic
  • Taiwan, Province of China
  • Tajikistan
  • Tanzania, United Republic of
  • Thailand
  • Timor-Leste
  • Togo
  • Tonga
  • Tunisia
  • Turkmenistan
  • Türkiye
  • Uganda
  • Ukraine
  • United Arab Emirates
  • United Kingdom
  • United States
  • Uzbekistan
  • Vanuatu
  • Venezuela, Bolivarian Republic of
  • Viet Nam
  • Yemen
  • Zambia
  • Zimbabwe

Duration: 593 days

Time span: March 28 2021 to November 10 2022

Statistics over entire affected area:

  • Mean temperature anomaly: 3.2 °C
  • Mean temperature: 20.7 °C
  • Maximum temperature anomaly: 35.1 °C
  • Maximum temperature: 44.7 °C

Event center: 1.0°N 350.0°E

Area affected: 335408961 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_2021-Mar-28_to_2022-Nov-10_350.0_1.0

Cold spell occuring from December 29 2020 to January 03 2021 at 34.5°N 119.0°E

Download data: JSON

Event type: Cold spell

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

  • Cambodia
  • China
  • Hong Kong
  • Lao People’s Democratic Republic
  • Myanmar
  • Taiwan, Province of China
  • Thailand
  • Viet Nam

Duration: 6 days

Time span: December 29 2020 to January 03 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -4.8 °C
  • Mean temperature: 9.5 °C
  • Minimum temperature anomaly: -13.3 °C
  • Minimum temperature: -12.0 °C

Event center: 34.5°N 119.0°E

Area affected: 2208931 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-29_to_2021-Jan-03_119.0_34.5

Heat wave occuring from December 25 2020 to December 29 2020 at 24.0°N 115.0°E

Download data: JSON

Event type: Heat wave

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

  • China
  • Hong Kong

Duration: 5 days

Time span: December 25 2020 to December 29 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 5.3 °C
  • Mean temperature: 13.3 °C
  • Maximum temperature anomaly: 8.6 °C
  • Maximum temperature: 20.6 °C

Event center: 24.0°N 115.0°E

Area affected: 397693 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-Dec-25_to_2020-Dec-29_115.0_24.0

Cold spell occuring from December 19 2020 to February 09 2021 at 49.5°N 147.5°E

Download data: JSON

Event type: Cold spell

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

  • Afghanistan
  • Albania
  • Belarus
  • Bosnia and Herzegovina
  • Bulgaria
  • Cambodia
  • China
  • Croatia
  • Czechia
  • Estonia
  • Finland
  • Greece
  • Hong Kong
  • Hungary
  • India
  • Iran, Islamic Republic of
  • Italy
  • Japan
  • Kazakhstan
  • Korea, Democratic People’s Republic of
  • Korea, Republic of
  • Kyrgyzstan
  • Lao People’s Democratic Republic
  • Latvia
  • Lithuania
  • Moldova, Republic of
  • Mongolia
  • Montenegro
  • Myanmar
  • North Macedonia
  • Oman
  • Pakistan
  • Poland
  • Romania
  • Russian Federation
  • Serbia
  • Slovakia
  • Slovenia
  • Sweden
  • Taiwan, Province of China
  • Tajikistan
  • Thailand
  • Turkmenistan
  • Türkiye
  • Ukraine
  • Uzbekistan
  • Viet Nam

Duration: 53 days

Time span: December 19 2020 to February 09 2021

Statistics over entire affected area:

  • Mean temperature anomaly: -11.0 °C
  • Mean temperature: -25.7 °C
  • Minimum temperature anomaly: -28.3 °C
  • Minimum temperature: -60.6 °C

Event center: 49.5°N 147.5°E

Area affected: 40138019 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-19_to_2021-Feb-09_147.5_49.5

Heat wave occuring from November 17 2020 to April 19 2021 at 16.5°N 134.5°E

Download data: JSON

Event type: Heat wave

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

  • Afghanistan
  • Albania
  • Algeria
  • Andorra
  • Armenia
  • Aruba
  • Austria
  • Azerbaijan
  • Bahamas
  • Bahrain
  • Bangladesh
  • Belarus
  • Belize
  • Bhutan
  • Bonaire, Sint Eustatius and Saba
  • Bosnia and Herzegovina
  • Bulgaria
  • Cambodia
  • Cameroon
  • Canada
  • Central African Republic
  • Chad
  • China
  • Colombia
  • Costa Rica
  • Croatia
  • Cuba
  • Cyprus
  • Czechia
  • Denmark
  • Djibouti
  • Dominican Republic
  • Egypt
  • El Salvador
  • Eritrea
  • Estonia
  • Ethiopia
  • Finland
  • France
  • Georgia
  • Germany
  • Greece
  • Greenland
  • Guatemala
  • Haiti
  • Honduras
  • Hong Kong
  • Hungary
  • India
  • Indonesia
  • Iran, Islamic Republic of
  • Iraq
  • Israel
  • Italy
  • Jamaica
  • Japan
  • Jordan
  • Kazakhstan
  • Korea, Democratic People’s Republic of
  • Korea, Republic of
  • Kuwait
  • Kyrgyzstan
  • Lao People’s Democratic Republic
  • Latvia
  • Lebanon
  • Libya
  • Lithuania
  • Mali
  • Martinique
  • Mauritania
  • Mexico
  • Moldova, Republic of
  • Mongolia
  • Montenegro
  • Morocco
  • Myanmar
  • Nepal
  • Nicaragua
  • Niger
  • Nigeria
  • North Macedonia
  • Northern Mariana Islands
  • Oman
  • Pakistan
  • Palau
  • Philippines
  • Poland
  • Portugal
  • Puerto Rico
  • Qatar
  • Romania
  • Russian Federation
  • Saudi Arabia
  • Serbia
  • Slovakia
  • Slovenia
  • South Sudan
  • Spain
  • Sri Lanka
  • Sudan
  • Sweden
  • Switzerland
  • Syrian Arab Republic
  • Taiwan, Province of China
  • Tajikistan
  • Thailand
  • Tunisia
  • Turkmenistan
  • Turks and Caicos Islands
  • Türkiye
  • Ukraine
  • United Arab Emirates
  • United States
  • Uzbekistan
  • Viet Nam
  • Yemen

Duration: 154 days

Time span: November 17 2020 to April 19 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.3 °C
  • Mean temperature: 16.8 °C
  • Maximum temperature anomaly: 27.4 °C
  • Maximum temperature: 37.1 °C

Event center: 16.5°N 134.5°E

Area affected: 124427445 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-Nov-17_to_2021-Apr-19_134.5_16.5

Heat wave occuring from April 04 2020 to May 12 2020 at 68.0°N 92.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • China
  • Hong Kong
  • Kazakhstan
  • Kyrgyzstan
  • Lao People’s Democratic Republic
  • Mongolia
  • Myanmar
  • Russian Federation
  • Svalbard and Jan Mayen
  • Taiwan, Province of China
  • Viet Nam

Duration: 39 days

Time span: April 04 2020 to May 12 2020

Statistics over entire affected area:

  • Mean temperature anomaly: 8.7 °C
  • Mean temperature: -0.6 °C
  • Maximum temperature anomaly: 18.8 °C
  • Maximum temperature: 34.4 °C

Event center: 68.0°N 92.0°E

Area affected: 20709406 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-Apr-04_to_2020-May-12_92.0_68.0