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    • World Wide Lightning Location Network (WWLLN) Monthly Thunder Hour Data

    Metadata Updated: April 9, 2026

    The World Wide Lightning Location Network (WWLLN) has monitored global lightning since late 2004. Since 2013, the number of global WWLLN sensors has remained largely consistent. This WWLLN Monthly Thunder Hour dataset is calculated from lightning detections from 1 January 2013 onward and is an ongoing dataset. A thunder hour is an hour during which thunder can be heard at a given location. Thunder hours represent a historical measure of lightning occurrence and a metric of thunderstorm frequency that is comparatively less sensitive to geographic variations in the detection capabilities of a lightning location system. Thunder hours are the number of hours in a given month during which at least two WWLLN strokes were observed within 15 km of each grid point. Each file includes the monthly accumulated thunder hours for one year. The data are provided at 0.05° latitude and longitude resolution.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date April 11, 2025
    Metadata Updated Date April 9, 2026

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 11, 2025
    Metadata Updated Date April 9, 2026
    Publisher NASA/MSFC/GHRC
    Maintainer
    Identifier 10.5067/WWLLN/DATA101
    Data Last Modified 2026-04-06
    Category Earth Science
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 9155d3d0-e686-42a8-a11f-a2b70ff580ce
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    License https://www.usa.gov/government-works
    Old Spatial {"NorthBoundingCoordinate":90,"WestBoundingCoordinate":-180,"SouthBoundingCoordinate":-90,"EastBoundingCoordinate":180},"CARTESIAN"
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 75ef1385a603a3851b01705c836170cd76dfbfb28f5dfe7a4c786748b4d4ec9d
    Source Schema Version 1.1
    Spatial
    Temporal 2013-01-01/2024-12-31

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