Observed arrival · 2026-09-12

Season Forecasts, Side by Side

seasonforecasts.com Observed source

Editorial interest 84/100 Selection signal · not a rating of the site

A browser-based tool for comparing seasonal forecast models and monthly initialization runs on synchronized maps.

Landing page captured for the 2026-09-12 issue.

Field notes

The tool aligns seasonal model panels to a common valid period and colour scale, allowing visitors to compare both different forecast systems and successive monthly initializations. It covers ECMWF SEAS5, UK Met Office GloSea6-GC5.1, Météo-France System 9, DWD GCFS 2.2 and CMCC SPS4. Its documentation distinguishes ensemble-mean anomalies from probability products and explains the use of each system’s 1993–2016 hindcast climatology.

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○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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