Category: Heat waves affecting United States

Heat wave occuring from April 21 2021 to April 28 2021 at 68.5°N 197.0°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 8 days

Time span: April 21 2021 to April 28 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.1 °C
  • Mean temperature: 2.3 °C
  • Maximum temperature anomaly: 11.9 °C
  • Maximum temperature: 8.0 °C

Event center: 68.5°N 197.0°E

Area affected: 241518 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-Apr-21_to_2021-Apr-28_197.0_68.5

Heat wave occuring from April 13 2021 to May 02 2021 at 60.5°N 207.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 20 days

Time span: April 13 2021 to May 02 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 4.2 °C
  • Mean temperature: 5.6 °C
  • Maximum temperature anomaly: 12.2 °C
  • Maximum temperature: 20.4 °C

Event center: 60.5°N 207.0°E

Area affected: 3150432 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-Apr-13_to_2021-May-02_207.0_60.5

Heat wave occuring from April 12 2021 to April 16 2021 at 49.5°N 156.5°E

Download data: JSON

Event type: Heat wave

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

  • Russian Federation
  • United States

Duration: 5 days

Time span: April 12 2021 to April 16 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 3.6 °C
  • Maximum temperature anomaly: 5.7 °C
  • Maximum temperature: 7.7 °C

Event center: 49.5°N 156.5°E

Area affected: 929011 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-Apr-12_to_2021-Apr-16_156.5_49.5

Heat wave occuring from April 07 2021 to April 10 2021 at 29.0°N 260.5°E

Download data: JSON

Event type: Heat wave

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

  • Mexico
  • United States

Duration: 4 days

Time span: April 07 2021 to April 10 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 5.1 °C
  • Mean temperature: 28.3 °C
  • Maximum temperature anomaly: 7.4 °C
  • Maximum temperature: 31.9 °C

Event center: 29.0°N 260.5°E

Area affected: 65768 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-Apr-07_to_2021-Apr-10_260.5_29.0

Heat wave occuring from April 02 2021 to May 31 2021 at 27.5°N 313.0°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • Belize
  • Cabo Verde
  • Cuba
  • Dominican Republic
  • France
  • Guatemala
  • Haiti
  • Honduras
  • Jamaica
  • Mexico
  • Morocco
  • Portugal
  • Puerto Rico
  • Spain
  • Turks and Caicos Islands
  • United States

Duration: 60 days

Time span: April 02 2021 to May 31 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 1.7 °C
  • Mean temperature: 21.6 °C
  • Maximum temperature anomaly: 6.9 °C
  • Maximum temperature: 35.4 °C

Event center: 27.5°N 313.0°E

Area affected: 17553386 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-Apr-02_to_2021-May-31_313.0_27.5

Heat wave occuring from April 01 2021 to April 10 2021 at 31.0°N 187.5°E

Download data: JSON

Event type: Heat wave

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

  • United States

Duration: 10 days

Time span: April 01 2021 to April 10 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.2 °C
  • Mean temperature: 20.7 °C
  • Maximum temperature anomaly: 3.4 °C
  • Maximum temperature: 24.0 °C

Event center: 31.0°N 187.5°E

Area affected: 753222 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-Apr-01_to_2021-Apr-10_187.5_31.0

Heat wave occuring from March 28 2021 to April 20 2021 at 49.5°N 315.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • Greenland
  • Iceland
  • Mexico
  • United States

Duration: 24 days

Time span: March 28 2021 to April 20 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 7.4 °C
  • Mean temperature: 6.6 °C
  • Maximum temperature anomaly: 19.7 °C
  • Maximum temperature: 30.5 °C

Event center: 49.5°N 315.0°E

Area affected: 11417545 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_2021-Apr-20_315.0_49.5

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

Heat wave occuring from March 19 2021 to April 02 2021 at 26.5°N 288.5°E

Download data: JSON

Event type: Heat wave

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

  • Bahamas
  • Cuba
  • Mexico
  • United States

Duration: 15 days

Time span: March 19 2021 to April 02 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 2.9 °C
  • Mean temperature: 23.1 °C
  • Maximum temperature anomaly: 10.6 °C
  • Maximum temperature: 32.1 °C

Event center: 26.5°N 288.5°E

Area affected: 3728399 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-19_to_2021-Apr-02_288.5_26.5

Heat wave occuring from March 17 2021 to March 28 2021 at 39.0°N 290.0°E

Download data: JSON

Event type: Heat wave

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

  • Canada
  • United States

Duration: 12 days

Time span: March 17 2021 to March 28 2021

Statistics over entire affected area:

  • Mean temperature anomaly: 9.1 °C
  • Mean temperature: 6.2 °C
  • Maximum temperature anomaly: 20.1 °C
  • Maximum temperature: 21.7 °C

Event center: 39.0°N 290.0°E

Area affected: 6527984 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-17_to_2021-Mar-28_290.0_39.0