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Large Language ModelsJapan Times TechPublished: Sep 15, 2026, 13:00 JST

Weathernews' Abe: AI weather models gain ground on traditional forecasting

Weathernews' Abe: AI weather models gain ground on traditional forecasting

3 Key Points

  1. What happened

    AI is gaining ground in weather forecasting, with meteorological agencies and private companies worldwide developing proprietary AI forecasting models, Weathernews' Daisuke Abe explained a model in Chiba in July.

  2. Why it matters

    Forecasts have traditionally relied on numerical weather prediction, where supercomputers process observational data and simulate atmospheric conditions using physics laws. AI models instead analyze vast amounts of historical data to predict future weather patterns.

  3. What to watch

    The shift raises the question of whether AI models can match the physics-based approach in practice, and whether agencies and firms will keep investing in both systems. Watch how development progresses across meteorological agencies and private companies.

WHO IT HITSMeteorological agencies and private-sector companies developing forecasting models are directly affected, as they weigh AI-based approaches against established numerical weather prediction. Businesses and individuals relying on weather forecasts may see changes in how predictions are produced.

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Context & Analysis

Weather forecasting has long depended on numerical weather prediction: supercomputers take observational data and simulate atmospheric conditions using the laws of physics. That approach demands enormous computing power and a deep physical model of the atmosphere.

In recent years, AI-based weather models have emerged as a different path. Instead of simulating physics, these systems analyze vast amounts of historical data to predict future weather patterns. According to the article, meteorological agencies and private-sector companies worldwide are now developing their own proprietary AI forecasting models. Weathernews executive officer Daisuke Abe explained one such model in Chiba in July.

The stakes come down to whether historical-data-driven models can match or complement the physics-based systems that agencies have relied on for decades. The outcome hinges on how well these AI models perform in practice across different weather situations, and on whether agencies and companies continue to invest in both approaches side by side.

FAQ
What is numerical weather prediction?
It is the traditional forecasting method in which supercomputers process observational data and simulate atmospheric conditions based on the laws of physics.
How do AI weather models differ from traditional ones?
AI-based weather models analyze vast amounts of historical data to predict future weather patterns, rather than simulating atmospheric conditions using physics laws.
Who is developing AI forecasting models?
Meteorological agencies and private-sector companies around the world are developing proprietary AI forecasting models.
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