Regional weather impact scores are computed in a similar manner to our other weather impact scores except for a predefined region. Each region is defined as a weighted collection of airspace and airports which are a prime focus of national air traffic management planning/actions when severe weather threatens the region. Forecast impact scores are generated for the next day using 12Z forecast data and updated hourly during the Day of Operations starting with 8Z and at the conclusion of the Day of Operations the “actual” weather impact score is generated using observed data. These scores are computed for each hour and the ‘Early Day’ & ‘Primetime’ 8-hour time periods. Score values are assigned based on comparing to a five-year historical distribution (2020-2024) using the percentile ranges shown to the right.

Regional Impact Scores

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