Cyclone Lekima

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General Information

Cyclone Lekima Response is an Activation of the Humanitarian OpenStreetMap Team (HOT) to improve the basemap in areas of Japan affected by Cyclone Lekima, which reached top speeds of 240km/h.

The Humanitarian Map Style in Taiwan and China

For Aid Organizations

Map and Data Services

Map showing the editing activity of OSM contributors during Typhoon Haiyan

About OpenStreetMap

OpenStreetMap offers an online map (and spatial database) which is updated by the minute. Various tools and services allow data extracts for GIS specialists, Routable Garmin GPS data, Smartphone GPS navigation, and other device-compatible downloads. With an internet connection, regular syncing is possible with open access to the community contributed data as it comes in, with OpenStreetMap's bulk data downloads ideal for use offline. In addition, maps can also be printed to paper.

Browse the Activation Area to get a feel for the data that is currently available. Different map styles including an Humanitarian style can be selected on the right side, and some data may not render (appear) on the map, but could be exported from the underlying database (See export section below).

Paper Maps

Poster size Maps and normal sized paper atlases of custom areas can be printed:

  • See OSM_on_Paper for an overview and list of platforms and services for printing maps.
  • We suggest FieldPapers Paper Maps with grid for field survey or general navigation purposes.

Exporting OpenStreetMap data

See Downloading data for instructions on getting large scale map data, or see the focused exports below:

Offline Road Navigation with small devices

With the availibility of Small communication devices, Navigation Offline data proves to be very useful to the humanitarians deployed in foreign countries. We support the humanitarian NGO's using navigation data and invite them to give us feedback on the utilization of these devices in the context of field deployment.

  • See Software/Mobile for more information on using OSM in portable devices.
  • See also Mobile Mapping on for information on mapping in the field.

Usage of OSM data for Humanitarian Missions

About This Disaster Mapping Project

About HOT

Hot logo with text.svg
  • To learn more about the Humanitarian OpenStreetMap Team (HOT), explore more of our wiki-pages (root: HOT) or our website We are a global community of mostly volunteers, we are also a US Nonprofit able to contract with organizations (email info at to contact our staff), we are also a 501-c-3 charitable organization.

History of this Activation

Reactivity of the OSM Community

  • 8th August 2019 the impending Cyclone was brought to the attention of the Disaster Activation Team. A size-up was conducted, and an initial project for the small island of Tarama was created, as this was directly hit by the path of the Cyclone. However, with the Cyclone so far out from China, and path therefore fluctuating, the decision was made to hold on other other projects until more information was attained.
  • 9th August 2019 northern and southern projects were created for the island of Ishigaki.
  • 11th August 2019 the final two activation projects were created for the Miyako Islands and the Iriomote and Hateruma Islands. After this, we were informed by a local OSM member that damage on this chain of islands for not as serious as predicted, and therefore no more projects were scheduled after this.


  • HOT Disaster Coordinators: Theo Andrae (Activation Team Lead), Russell Deffner (HOT Disaster Coordinator)
  • Local Leads: Taichi Furuhashi and Satoshi IIDA (OSM&CrisisMappers Japan, HOT)

Support Team

  • HOT Support Team: Ralph Aytoun, David Garcia, Greg Rose, Jarmo Kivekas, Simon Wilde, Harry Mahardhika M

Effort made - #cyclone-lekima

  • In the first 24 hours of the response, 29 mappers have made over 24,000 changes to the map included the addition of 260+ roadways, and 2220+ buildings.
  • August 11 - 77 mappers have made over 100,000 changes to the map: 500 roadways, 14,000+ buildings
  • August 13 - 95 mappers have made over 125,000 changes to the map: 500+ roadways, 16,500+ buildings
  • August 15 - 106 mappers have made over 143,500 changes to the map: 600+ roadways, 19,000 buildings
  • August 17 - 116 mappers have made over 170,000 changes to the map: 600+ roadways, 23,000+ buildings
  • August 19 - 129 mappers have made over 192,500 changes to the map: 650+ roadways, 25,700+ buildings
  • August 21 - 139 mappers have made over 201,500 changes to the map: 650+ roadways, 26,800+ buildings
  • August 24 - 154 mappers have made over 217,000 changes to the map: 695+ roadways, 28,500 buildings
  • August 28 - 179 Mappers have made over 245,000 changes to the map: 730+ roadways, 31,400+ buildings
  • September 7 - 238 Mappers have made over 306,000 changes to the map: 911+ roadways, 39,150+ buildings

(Source until 9/7: resultmaps)

  • October 1 - 249 Mappers have contributed over 50,000 features including 45,000+ buildings

(Source: Missing Maps)

For Mappers

  • This response has concluded, thank you!

How You Can Contribute

Learn to Map

  • Most of our volunteer needs are for remote OSM contributors, visit to get started.


We’re available to support you with any questions on these activities, please fill out this form and join us on the HOT Slack Channel: and head to #mapper-support for assistance.

Host a Mapathon

Instructions on the Missing Maps website.


Experienced mappers of at least Intermediate level can apply to be validator on this activation, double checking mapping and helping new mappers grow their skills:

Register to become a validator on the HOT Tasking Manager.

Information on validating can be found here

Spread the Word

  • Follow us on Twitter, Facebook and Instagram and share our messages to encourage more mappers! Use the HOT hashtag #mapthedifference

Mapping Priority

  • Please choose from highest priority first
  • Experienced mappers are also asked to participate in validating completed tasks. Information on validating can be found here
Project Priority Location What to map Imagery Source Task Mapping Status Task Validation Status
6383 Complete Miyako Islands, Japan Buildings MAXAR Premium Complete (100%) Complete (100%)
6384 Complete Iriomote & Hateruma Islands, Japan Buildings MAXAR Premium Complete (100%) Complete (100%)
6382 Complete South of Ishigaki Island, Japan Buildings MAXAR Premium Complete (100%) Complete (100%)
6381 Complete North of Ishigaki Island, Japan Buildings MAXAR Premium Complete (100%) Complete (100%)
6370 Complete Tarama Island, Japan Buildings MAXAR Premium Complete (100%) Complete (100%)

Available Imagery

OSM Default Imagery Sources


Bing provides a global imagery data source that is the 'default' Imagery available for OSM (default option in most editors).


Mapbox provides a global imagery source and should be compared to Bing (typically use Bing for alignment if available and not instructed otherwise).

Alternative Imagery Sources

How to add/use Alternative Imagery

In many cases better imagery is available than the default; when possible we set up a remote link directly via the Tasking Manager, so there is nothing to do, the iD editor and (as long as enabled) JOSM will automatically add the imagery.

Additionally, with JOSM, it's relatively easy to add special imagery if the license is appropriate for tracing into OSM. For more details see JOSM Imagery Help