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    "headline": "Google Unveils WeatherNext 3 AI Model with Sharper Forecasts",
    "dek": "Google launches WeatherNext 3, an AI weather model offering five times sharper resolution and 50% more accurate precipitation forecasts.",
    "prose": "Google announced the release of WeatherNext 3, which the company describes as its most advanced and accurate global weather AI model. [^1]\n\nArtificial intelligence weather prediction systems now surpass state-of-the-art physical models for medium-range weather forecasting. [^2]\n\nGoogle claims that in medium-range global forecasts, WeatherNext 3 shows a Continuous Ranked Probability Score improvement of up to 50% against IMERG, 30% for MRMS, and 10% against rain gauge measurements for early lead times. [^3]\n\nThe new model generates hourly forecasts at multiple spatial resolutions, including temperature and moisture at 5-kilometer resolution, surface variables at 10 kilometers, and wind speed at 25 kilometers. [^4]\n\nWeatherNext 3 utilizes a mosaic of live, global geostationary satellite data to learn directly from real-time observations rather than relying solely on numerical weather prediction models. [^5]\n\nCurrent global AIWP models are trained almost exclusively using one reanalysis dataset, ERA5, but it has known biases, particularly for precipitation. [^6]\n\nThe model exceeds the Brier skill score of state-of-the-art operational models on extreme rainfall prediction by 57% globally. [^7]\n\nThe resulting model improves medium-range continuous ranked probability scores by up to 19%. [^8]",
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