Home › Weather › Moderate Rainfall Warning
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the MarketUK weather desk. Data from national met services via Open-Meteo.
A moderate rainfall warning, typically a Met Office yellow alert, indicates that 15–40 mm of rain is expected within a 6–12 hour period, potentially causing localised flooding and travel disruption. This is a standard autumn/winter warning across the UK, not a rare event, but one that warrants checking your route and property.
What does a moderate rainfall warning mean for my area?
For most of England, Wales and Scotland, a moderate (yellow) warning means spray and sudden flooding on roads, with a small chance of homes and businesses being affected. In London, the primary risk is surface water flooding on low-lying roads and underpasses. For Scotland, the warning often combines with melting snow, increasing runoff. Check the 10 Day Weather Forecast UK for your specific location.
How does this compare to other storm warnings?
A moderate rainfall warning is less severe than an amber warning, which indicates risk to life and property. It is often issued alongside a Storm Floris Edinburgh type event or a storm to hit Britain this weekend scenario. While not a met office snow warning, heavy rain on frozen ground can be equally hazardous. For current alerts, see UK weather hub.
Is a moderate rainfall warning the same as a yellow warning?
Yes. The Met Office uses a three-tier system: yellow (moderate), amber (severe), and red (extreme). A moderate rainfall warning is always a yellow alert, meaning “be aware” rather than “take immediate action.”
How long does a moderate rainfall warning last?
Most warnings cover a 12 to 24-hour window. The Met Office updates them every six hours. A moderate rainfall warning today may be downgraded or extended depending on how the weather system develops.
What does amber weather warning meaning differ from yellow?
An amber warning means “be prepared” for significant disruption, including potential power cuts and danger to life. A yellow (moderate) warning is a heads-up for minor disruption like slower travel times and localised flooding.