The recent study by Kantar gathered, analyzed and compared the on-air televised weather forecast presentations of WCAU-TV, KYW-TV and WTXF-TV local stations with the AccuWeather forecast on WPVI-TV to determine which had the most accurate forecast.
For maximum consistency, the 6 pm local time, Monday to Friday, on-air TV weathercast, which most stations provide, was viewed, and the forecast from this telecast was recorded and compared and the results verified.
Forecasts were verified by comparing them to observed data from US National Weather Service official data sources.
For a complete glossary of all terms, calculations and data sources see Appendix A and Appendix B
The graph shows the overall accuracy of the AccuWeather/WPVI-TV weathercast vs. other local TV stations in the Philadelphia market. The AccuWeather/WPVI-TV forecasts were the most accurate overall by 24%. AccuWeather/WPVI-TV weather forecast was 16.7% more accurate than WTXF-TV, 26.9% more accurate than KYW-TV and 27% more accurate than WCAU-TV.
In Philadelphia, the AccuWeather/ABC station, WPVI-TV, provided the most impact-driven weathercasts with much more useful and localized forecast detail and important information than the other Philadelphia stations.
The AccuWeather/WPVI-TV weathercast was ranked #1 in providing the most detail:
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