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Data

Times people were forced from home by weather-related disasters, by hazard (estimated)

How many times people were forced to leave their homes, staying within their own country, because of floods, storms, wildfires, landslides, droughts and other weather-related disasters, worldwide, each year since 2008, by hazard. Calculated from IDMC's event data by adding up IDMC's estimate for each event with a reported figure. These are movements, not people: one person displaced twice is counted twice, and pre-emptive evacuations are included. IDMC records far more events than it did as monitoring and reporting widened (its file has 1,044 weather-related event rows for 2008 and 7,064 for 2025), so a rise is not evidence that disasters are becoming more frequent. The figures are weather-related; they are not attributed to climate change. For 2008 and 2010–2016, IDMC gives China's displacement as one figure a year that is not split by hazard, so it is not in those years' sums and they are not comparable with later ones; each year's note gives the figures left out. 701 weather-related event rows in this release have no reported figure and are left out, not counted as zero. Totals printed in IDMC's Global Report on Internal Displacement are built differently and are not used.

Latest value

26,933,321displacements

World: the countries and territories in IDMC's event file (ISO 3166 codes, plus AB9 for the Abyei Area), 2025. Version GIDD disaster export, last update 2026-08-31.

Times people were forced from home by weather-related disasters, by hazard (estimated) (internal displacements (movements, not people))

155 values from 2008 to 2025. Lines: All weather-related hazards, Flood, Storm, Wildfire, Landslide or avalanche (wet mass movement).
Show as a table
Times people were forced from home by weather-related disasters, by hazard (estimated), every value
PeriodHazardValue (displacements)Status
2008All weather-related hazards29,709,695final
2009All weather-related hazards19,144,966final
2010All weather-related hazards36,324,757final
2011All weather-related hazards19,150,823final
2012All weather-related hazards24,891,656final
2013All weather-related hazards17,225,903final
2014All weather-related hazards15,806,980final
2015All weather-related hazards15,319,094final
2016All weather-related hazards19,203,454final
2017All weather-related hazards17,893,168final
2018All weather-related hazards16,372,137final
2019All weather-related hazards24,307,174final
2020All weather-related hazards30,332,603final
2021All weather-related hazards22,353,710final
2022All weather-related hazards31,805,864final
2023All weather-related hazards20,552,745final
2024All weather-related hazards45,509,095final
2025All weather-related hazards26,933,321final
2008Flood17,060,536final
2009Flood7,655,061final
2010Flood33,251,287final
2011Flood16,045,550final
2012Flood19,512,354final
2013Flood4,579,471final
2014Flood8,573,286final
2015Flood11,085,086final
2016Flood9,498,315final
2017Flood8,630,028final
2018Flood5,378,600final
2019Flood9,960,313final
2020Flood14,125,158final
2021Flood10,054,670final
2022Flood19,127,044final
2023Flood9,709,295final
2024Flood18,501,319final
2025Flood7,774,297final
2008Storm12,592,199final
2009Storm10,997,806final
2010Storm2,928,967final
2011Storm3,002,115final
2012Storm5,266,186final
2013Storm12,570,924final
2014Storm7,018,803final
2015Storm4,070,823final
2016Storm8,982,621final
2017Storm7,533,655final
2018Storm9,585,689final
2019Storm13,425,174final
2020Storm14,780,213final
2021Storm11,513,287final
2022Storm10,037,029final
2023Storm9,743,022final
2024Storm25,785,689final
2025Storm18,003,987final
2008Wildfire23,840final
2009Wildfire66,496final
2010Wildfire52,216final
2011Wildfire27,513final
2012Wildfire45,898final
2013Wildfire17,691final
2014Wildfire36,178final
2015Wildfire52,932final
2016Wildfire333,625final
2017Wildfire407,619final
2018Wildfire425,268final
2019Wildfire532,727final
2020Wildfire1,217,986final
2021Wildfire469,756final
2022Wildfire372,895final
2023Wildfire475,703final
2024Wildfire425,055final
2025Wildfire694,094final
2008Landslide or avalanche (wet mass movement)6,703final
2009Landslide or avalanche (wet mass movement)34,236final
2010Landslide or avalanche (wet mass movement)85,740final
2011Landslide or avalanche (wet mass movement)63,743final
2012Landslide or avalanche (wet mass movement)30,554final
2013Landslide or avalanche (wet mass movement)35,468final
2014Landslide or avalanche (wet mass movement)170,433final
2015Landslide or avalanche (wet mass movement)74,223final
2016Landslide or avalanche (wet mass movement)55,677final
2017Landslide or avalanche (wet mass movement)37,467final
2018Landslide or avalanche (wet mass movement)192,286final
2019Landslide or avalanche (wet mass movement)66,544final
2020Landslide or avalanche (wet mass movement)101,429final
2021Landslide or avalanche (wet mass movement)37,281final
2022Landslide or avalanche (wet mass movement)35,555final
2023Landslide or avalanche (wet mass movement)119,588final
2024Landslide or avalanche (wet mass movement)389,949final
2025Landslide or avalanche (wet mass movement)40,448final
2008Drought13,674final
2009Drought367,250final
2010Drought128final
2012Drought20,000final
2013Drought3,072final
2014Drought2,405final
2015Drought14,893final
2016Drought185,918final
2017Drought1,278,832final
2018Drought766,095final
2019Drought294,188final
2020Drought61,510final
2021Drought256,192final
2022Drought2,215,416final
2023Drought490,767final
2024Drought385,740final
2025Drought322,745final
2008Erosion341final
2009Erosion1,138final
2010Erosion515final
2011Erosion4,035final
2012Erosion4,938final
2013Erosion3,187final
2014Erosion987final
2015Erosion14,088final
2016Erosion133,656final
2017Erosion630final
2022Erosion2,485final
2023Erosion7,120final
2024Erosion1,895final
2025Erosion93,425final
2008Extreme temperature (cold wave or heat wave)12,354final
2009Extreme temperature (cold wave or heat wave)22,979final
2010Extreme temperature (cold wave or heat wave)5,904final
2011Extreme temperature (cold wave or heat wave)3,462final
2012Extreme temperature (cold wave or heat wave)11,726final
2013Extreme temperature (cold wave or heat wave)16,090final
2014Extreme temperature (cold wave or heat wave)4,524final
2015Extreme temperature (cold wave or heat wave)7,049final
2016Extreme temperature (cold wave or heat wave)13,642final
2017Extreme temperature (cold wave or heat wave)4,309final
2018Extreme temperature (cold wave or heat wave)23,872final
2019Extreme temperature (cold wave or heat wave)24,493final
2020Extreme temperature (cold wave or heat wave)46,091final
2021Extreme temperature (cold wave or heat wave)20,419final
2022Extreme temperature (cold wave or heat wave)14,883final
2023Extreme temperature (cold wave or heat wave)4,726final
2024Extreme temperature (cold wave or heat wave)8,436final
2025Extreme temperature (cold wave or heat wave)4,323final
2008Wave action10final
2011Wave action296final
2014Wave action216final
2017Wave action628final
2018Wave action327final
2019Wave action3,735final
2020Wave action216final
2021Wave action2,105final
2022Wave action557final
2023Wave action2,524final
2024Wave action534final
2008Sea level rise38final
2011Sea level rise4,109final
2014Sea level rise148final
2024Sea level rise10,478final
2025Sea level rise2final
Calculated by Environment Dashboard from Internal Displacement Monitoring Centre (IDMC) data: Global Internal Displacement Database, https://www.internal-displacement.org/database/displacement-data/, accessed 2026-10-12. CC BY-NC-SA 3.0 IGO. Changes: Calculated from IDMC event data: added up the raw displacement figures of weather-related disaster events by year and hazard type, and over all types. CC BY-NC-SA 3.0 IGO (IDMC API documentation; the export's own README states CC BY-NC).

Notes on individual values

  • Also not in this sum: 26,822,000 displacements in 1 row IDMC files for 2008 under 'Mixed disasters', not assigned to one hazard (the largest: China, 26,822,000).
  • 1 of the 1,577 weather-related event rows IDMC lists for 2009 has no reported figure and is not in this sum. Also not in this sum: 130,000 displacements in 1 row IDMC files for 2009 under 'Mixed disasters', not assigned to one hazard (the largest: Burkina Faso, 130,000).
  • Also not in this sum: 18,584,000 displacements in 1 row IDMC files for 2010 under 'Mixed disasters', not assigned to one hazard (the largest: China, 18,584,000).
  • 2 of the 1,657 weather-related event rows IDMC lists for 2011 have no reported figure and are not in this sum. Also not in this sum: 9,402,232 displacements in 2 rows IDMC files for 2011 under 'Mixed disasters', not assigned to one hazard (the largest: China, 9,394,000).
  • 3 of the 1,678 weather-related event rows IDMC lists for 2012 have no reported figure and are not in this sum. Also not in this sum: 11,135,953 displacements in 2 rows IDMC files for 2012 under 'Mixed disasters', not assigned to one hazard (the largest: China, 11,096,000).
  • 65 of the 2,130 weather-related event rows IDMC lists for 2013 have no reported figure and are not in this sum. Also not in this sum: 12,168,639 displacements in 3 rows IDMC files for 2013 under 'Mixed disasters', not assigned to one hazard (the largest: China, 12,150,000).
  • 42 of the 2,404 weather-related event rows IDMC lists for 2014 have no reported figure and are not in this sum. Also not in this sum: 6,150,513 displacements in 2 rows IDMC files for 2014 under 'Mixed disasters', not assigned to one hazard (the largest: China, 6,017,000).
  • 5 of the 1,882 weather-related event rows IDMC lists for 2015 have no reported figure and are not in this sum. Also not in this sum: 6,444,000 displacements in 1 row IDMC files for 2015 under 'Mixed disasters', not assigned to one hazard (the largest: China, 6,444,000).
  • 26 of the 2,208 weather-related event rows IDMC lists for 2016 have no reported figure and are not in this sum. Also not in this sum: 9,143,000 displacements in 2 rows IDMC files for 2016 under 'Mixed disasters', not assigned to one hazard (the largest: China, 9,101,000).
  • 32 of the 1,867 weather-related event rows IDMC lists for 2019 have no reported figure and are not in this sum.
  • 25 of the 1,821 weather-related event rows IDMC lists for 2020 have no reported figure and are not in this sum.
  • 368 of the 1,544 weather-related event rows IDMC lists for 2021 have no reported figure and are not in this sum.
  • 16 of the 2,279 weather-related event rows IDMC lists for 2022 have no reported figure and are not in this sum.
  • 57 of the 3,831 weather-related event rows IDMC lists for 2023 have no reported figure and are not in this sum.
  • 33 of the 4,811 weather-related event rows IDMC lists for 2024 have no reported figure and are not in this sum. Also not in this sum: 19,132 displacements in 15 rows IDMC files for 2024 under 'Mixed disasters', not assigned to one hazard (the largest: Zambia, 9,029).
  • 26 of the 7,064 weather-related event rows IDMC lists for 2025 have no reported figure and are not in this sum. Also not in this sum: 531,353 displacements in 247 rows IDMC files for 2025 under 'Mixed disasters', not assigned to one hazard (the largest: Afghanistan, 252,815).
  • 1 of the 276 flood event rows IDMC lists for 2009 has no reported figure and is not in this sum.
  • 2 of the 426 flood event rows IDMC lists for 2011 have no reported figure and are not in this sum.
  • 19 of the 912 flood event rows IDMC lists for 2013 have no reported figure and are not in this sum.
  • 9 of the 951 flood event rows IDMC lists for 2014 have no reported figure and are not in this sum.
  • 1 of the 770 flood event rows IDMC lists for 2015 has no reported figure and is not in this sum.
  • 10 of the 774 flood event rows IDMC lists for 2016 have no reported figure and are not in this sum.
  • 6 of the 747 flood event rows IDMC lists for 2019 have no reported figure and are not in this sum.
  • 7 of the 916 flood event rows IDMC lists for 2020 have no reported figure and are not in this sum.
  • 123 of the 648 flood event rows IDMC lists for 2021 have no reported figure and are not in this sum.
  • 11 of the 1,014 flood event rows IDMC lists for 2022 have no reported figure and are not in this sum.
  • 36 of the 1,747 flood event rows IDMC lists for 2023 have no reported figure and are not in this sum.
  • 19 of the 2,778 flood event rows IDMC lists for 2024 have no reported figure and are not in this sum.
  • 8 of the 4,391 flood event rows IDMC lists for 2025 have no reported figure and are not in this sum.
  • 2 of the 637 storm event rows IDMC lists for 2012 have no reported figure and are not in this sum.
  • 24 of the 830 storm event rows IDMC lists for 2013 have no reported figure and are not in this sum.
  • 9 of the 914 storm event rows IDMC lists for 2014 have no reported figure and are not in this sum.
  • 4 of the 763 storm event rows IDMC lists for 2015 have no reported figure and are not in this sum.
  • 7 of the 758 storm event rows IDMC lists for 2016 have no reported figure and are not in this sum.
  • 15 of the 686 storm event rows IDMC lists for 2019 have no reported figure and are not in this sum.
  • 15 of the 449 storm event rows IDMC lists for 2020 have no reported figure and are not in this sum.
  • 166 of the 550 storm event rows IDMC lists for 2021 have no reported figure and are not in this sum.
  • 5 of the 686 storm event rows IDMC lists for 2022 have no reported figure and are not in this sum.
  • 11 of the 1,200 storm event rows IDMC lists for 2023 have no reported figure and are not in this sum.
  • 8 of the 984 storm event rows IDMC lists for 2024 have no reported figure and are not in this sum.
  • 2 of the 1,755 storm event rows IDMC lists for 2025 have no reported figure and are not in this sum.
  • 1 of the 388 wildfire event rows IDMC lists for 2012 has no reported figure and is not in this sum.
  • 1 of the 65 wildfire event rows IDMC lists for 2013 has no reported figure and is not in this sum.
  • 1 of the 100 wildfire event rows IDMC lists for 2014 has no reported figure and is not in this sum.
  • 6 of the 100 wildfire event rows IDMC lists for 2016 have no reported figure and are not in this sum.
  • 4 of the 153 wildfire event rows IDMC lists for 2019 have no reported figure and are not in this sum.
  • 1 of the 254 wildfire event rows IDMC lists for 2020 has no reported figure and is not in this sum.
  • 3 of the 127 wildfire event rows IDMC lists for 2021 have no reported figure and are not in this sum.
  • 1 of the 295 wildfire event rows IDMC lists for 2023 has no reported figure and is not in this sum.
  • 1 of the 522 wildfire event rows IDMC lists for 2024 has no reported figure and is not in this sum.
  • 1 of the 374 wildfire event rows IDMC lists for 2025 has no reported figure and is not in this sum.
  • 21 of the 238 mass movement event rows IDMC lists for 2013 have no reported figure and are not in this sum.
  • 23 of the 355 mass movement event rows IDMC lists for 2014 have no reported figure and are not in this sum.
  • 3 of the 304 mass movement event rows IDMC lists for 2016 have no reported figure and are not in this sum.
  • 6 of the 248 mass movement event rows IDMC lists for 2019 have no reported figure and are not in this sum.
  • 2 of the 179 mass movement event rows IDMC lists for 2020 have no reported figure and are not in this sum.
  • 72 of the 184 mass movement event rows IDMC lists for 2021 have no reported figure and are not in this sum.
  • 4 of the 314 mass movement event rows IDMC lists for 2023 have no reported figure and are not in this sum.
  • 1 of the 255 mass movement event rows IDMC lists for 2025 has no reported figure and is not in this sum.
  • 1 of the 15 drought event rows IDMC lists for 2019 has no reported figure and is not in this sum.
  • 1 of the 13 drought event rows IDMC lists for 2021 has no reported figure and is not in this sum.
  • 5 of the 200 drought event rows IDMC lists for 2023 have no reported figure and are not in this sum.
  • 5 of the 155 drought event rows IDMC lists for 2024 have no reported figure and are not in this sum.
  • 14 of the 209 drought event rows IDMC lists for 2025 have no reported figure and are not in this sum.
  • 3 of the 8 wave action event rows IDMC lists for 2021 have no reported figure and are not in this sum.

Where it comes from

Producer
Internal Displacement Monitoring Centre (IDMC), Norwegian Refugee Council · Global Internal Displacement Database (GIDD)
Version
GIDD disaster export, last update 2026-08-31
File
https://www.internal-displacement.org/database/displacement-data/
Fetched
2026-10-12 (by a person), 2,968,931 bytes
Fingerprint
sha256 25c78f150cffef0fac7b2c860d07738cf4a52da9bfe1bb1cc6a976c41ad0d2d3
Copies
No Wayback copy recorded yet.Our copy of the exact file
Cite the producer
Internal Displacement Monitoring Centre. Global Internal Displacement Database. IDMC (2026). Available at: https://www.internal-displacement.org/database/displacement-data/ (Accessed: 2026-10-12).

What was done to it

  1. Read the sheet '1_Disaster_Displacement_data' of IDMC's GIDD disaster export (README: last update 2026-08-31, extracted 2026-10-05; recorded 2026-10-12, sha256 25c78f150cff…): 44,335 rows for 2008–2025, one per disaster event in a country and year.

    Code: pipeline/src/envdash/transforms/impacts/idmc_gidd.py · code sha256 0e992bbeff94140a… · inputs 25c78f150cff…

  2. Kept the 41,821 rows whose Hazard Category is 'Weather related' (IDMC's own category, CRED EM-DAT classification). Left out 2,084 'Geophysical' rows (earthquakes, volcanic activity and dry mass movement) and 430 'Mixed disasters' rows (displacement IDMC does not assign to one hazard). For China, IDMC gives one 'Mixed disasters' row a year in 2008 and 2010–2016, so China's displacement in those years is not in the sums; nothing is estimated in its place. 'Mixed disasters' figures left out, by year: 2008 26,822,000; 2009 130,000; 2010 18,584,000; 2011 9,402,232; 2012 11,135,953; 2013 12,168,639; 2014 6,150,513; 2015 6,444,000; 2016 9,143,000; 2024 19,132; 2025 531,353; each year's total carries a note with them.

    Code: pipeline/src/envdash/transforms/impacts/idmc_gidd.py · code sha256 0e992bbeff94140a… · inputs 25c78f150cff…

  3. Added up the raw figure (Disaster Internal Displacements (Raw)) of these rows by Year, the year IDMC reports the displacement in, and by IDMC's Hazard Type, and over all nine types, as whole numbers. The rounded column is not used.

    Code: pipeline/src/envdash/transforms/impacts/idmc_gidd.py · code sha256 0e992bbeff94140a… · inputs 25c78f150cff…

  4. Left out the 701 weather-related rows with no reported figure; they are never counted as zero, and each value whose rows include some carries a note with their number. Rows with a figure and without one, by year: 2008 1,044/0; 2009 1,576/1; 2010 1,609/0; 2011 1,655/2; 2012 1,675/3; 2013 2,065/65; 2014 2,362/42; 2015 1,877/5; 2016 2,182/26; 2017 867/0; 2018 1,548/0; 2019 1,835/32; 2020 1,796/25; 2021 1,176/368; 2022 2,263/16; 2023 3,774/57; 2024 4,778/33; 2025 7,038/26.

    Code: pipeline/src/envdash/transforms/impacts/idmc_gidd.py · code sha256 0e992bbeff94140a… · inputs 25c78f150cff…

  5. A hazard type with no row in a year has no value for that year. No check against the totals printed in IDMC's Global Report on Internal Displacement: they are built differently and are not used.

    Code: pipeline/src/envdash/transforms/impacts/idmc_gidd.py · code sha256 0e992bbeff94140a… · inputs 25c78f150cff…

What it covers

Geography
World: the countries and territories in IDMC's event file (ISO 3166 codes, plus AB9 for the Abyei Area)
Basis
IDMC's estimates of internal displacements (forced movements within a country, pre-emptive evacuations included) for disaster events whose Hazard Category is 'Weather related' (CRED EM-DAT classification), added up by the year IDMC reports them in and by IDMC's Hazard Type. Geophysical events (earthquakes, volcanic activity, dry mass movement) and IDMC's 'Mixed disasters' (displacement not assigned to one hazard, including China's yearly figure for 2008 and 2010–2016) are left out. Mass movement here is landslides, wet mass movement and avalanches; extreme temperature is cold waves and heat waves. Only events with a reported figure are counted. Displacement by drought, which builds up slowly, is harder to monitor than displacement by sudden events. Weather-related, not attributed to climate change.
Unit
internal displacements (movements, not people) (displacements)