Thunderstorm Potential Index

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Thunderstorm Potential Index (K-Index / George’s Index)

The K-Index, also known as George’s Index, is a meteorological measure used to assess the potential for thunderstorm development for the current forecast period. Data from the Canadian Regional Deterministic Prediction System (RDPS).

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Data updates 4 times daily: at approximately midnight, 6 a.m., noon, and 6 p.m. UTC.