generated: '2026-07-22'
method: searched
source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/<slug>/release-notes/<version>
scheme: semver (per API; each DTN Developer Portal API publishes its own dated release notes)
notes: DTN publishes dated release notes per API on devportal.dtn.com (releases tab). 21 of 36 published APIs currently ship release notes. Recent window
  captured below (up to 3 versions per API).
entries:
- api: DTN ABA WebSocket
  version: 1.0.0
  date: December 1, 2025
  breaking: false
  highlights:
  - Initial release
  - ''
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/agency-bulletin-websocket-api/release-notes/1.0.0
- api: DTN Lightning WebSocket
  version: 1.0.0
  date: '2025-05-30'
  breaking: false
  highlights:
  - Initial version (V1)
  - Added `startTime` input for replay of lightning data
  - Added `geolocation` search
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-lightning-websocket/release-notes/1.0.0
- api: DTN Map Tile API
  version: 2.0.16
  date: March 30th, 2026
  breaking: false
  highlights:
  - 'Layer enhancements :'
  - Added more pavement conditions to the Pavement Conditions layer
  - Reduced timestamp interval of Synthetic Radar - Contour (Global) from 10 minutes to 5 minutes
  - Moved Total Cloud Cover layer to dynamic contouring approach
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-map-tile-api/release-notes/2.0.16
- api: DTN Map Tile API
  version: 2.0.15
  date: March 16th, 2026
  breaking: false
  highlights:
  - 'New Layer :'
  - Air Quality Index Observation Layer
  - 'Layer enhancements :'
  - Accommodate SPC Outlook CIG changes
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-map-tile-api/release-notes/2.0.16
- api: DTN Map Tile API
  version: 2.0.14
  date: Feb 16th, 2026
  breaking: false
  highlights:
  - 'Layer enhancements :'
  - Updated NWS weather bulletin alert types
  - Aesthetic improvement in precipitation probability
  - 'Security updates :'
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-map-tile-api/release-notes/2.0.16
- api: DTN Observation API
  version: 2.3.9
  date: '2024-05-30'
  breaking: false
  highlights:
  - Added feelsLikeTemp, wbgt and wetBulb as supported parameters
  - Added model gapFilling support for cloudCover and precipAcc60Min
  - 'Added hourly aggregated parameters for stations reporting every 10 minutes. Example: stations that report precipAcc10Min and sunshine10Min now automat'
  - Significant latency improvement on requests for archived obs (more than 45 days old)
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-observation-api/release-notes/2.0.0
- api: DTN Observation API
  version: 2.3.8
  date: '2024-04-02'
  breaking: true
  highlights:
  - WCA API has been upgraded to v2.
  - Removed `interval` from parameters sent to WCA API v2.
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-observation-api/release-notes/2.0.0
- api: DTN Observation API
  version: 2.3.7
  date: '2023-08-09'
  breaking: true
  highlights:
  - Update changes on documentation swagger by following MWA template.
  - The API now handles `wild card` search for tags.
  - Tag filter now strips leading 0 in the IDs or `wild card` searches.
  - The API now allows for setting the `interval` to `1h` to snap observations to the top of the hour
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-observation-api/release-notes/2.0.0
- api: DTN Tropical Cyclone API
  version: 1.0.6
  date: April 3, 2025
  breaking: true
  highlights:
  - Renamed query parameter `stormNumber` to `stormNum`
  - ''
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-tropical-api/release-notes/1.0.6
- api: DTN Tropical Cyclone API
  version: 1.0.5
  date: April 1, 2025
  breaking: false
  highlights:
  - Radii endpoints will now return the 'CURRENT_RADII', which is the radii for the storms current position.
  - Bug Fixes
  - ''
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-tropical-api/release-notes/1.0.6
- api: DTN Tropical Cyclone API
  version: 1.0.3
  date: December 16, 2024
  breaking: true
  highlights:
  - 'Response Metadata : Storm metadata will now contain `stormNum` and `stormId`'
  - ''
  - For Agency endpoints, BOM is now an allowed storm source agency.
  - Bug Fixes
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-tropical-api/release-notes/1.0.6
- api: DTN Weather Conditions API
  version: 2.2.0
  date: November 4, 2024
  breaking: false
  highlights:
  - 'Base Hub-Height Wind Parameters : Added wind speed, wind direction, and wind gust parameters to the current conditions and historical datasets at vari'
  - ''
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-weather-conditions-api/release-notes/2.2.0
- api: DTN Weather Conditions API
  version: 2.1.0
  date: October 22, 2024
  breaking: false
  highlights:
  - 'Extended Historical Dataset : The historical dataset has been expanded from 1 year to 10 years, now starting from `2013-01-01T00:00:00Z`, providing
    mo'
  - 'New Parameters : Over 10 new parameters have been added to both current conditions and historical datasets, including radiation parameters, enhancing '
  - 'Performance Enhancements : General performance improvements for faster data retrieval.'
  - 'Bug Fixes : Several bugs have been resolved to improve overall API stability.'
  source: https://dev-portal-api.prd.coreservices.zones.dtn.com/v1/apis/dtn-weather-conditions-api/release-notes/2.2.0