Forecast

Long-range pattern trends and seasonal outlooks.

Lightning and tornado hitting village

Long-Range Outlook: What This Fall's Pattern Signals

Early signals point to an active pattern shift heading into autumn. Here's what the guidance suggests so far.

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Dramatic lightning over Palmas Brazil

Model Guidance Explained: GFS vs ECMWF for Everyday Readers

A plain-language comparison of the two most-cited global forecast models and how to interpret their differences.

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