Overview
- The clipper crossing the Northeast into Wednesday is producing mostly light snow, with Boston near 1–3 inches, 3–6 inches north of Route 2, and localized 6–8 inches in parts of Maine as a Gulf of Maine low reinforces bands.
- Following the passage of a cold front, forecasters expect a reinvigorated but minor lake-effect response in portions of the Great Lakes and interior Northeast.
- The Met Office expects a notable drop in temperatures by Friday, increasing the chance of snow over higher ground in Scotland, northern England and parts of Wales, with current warnings highlighting 5–10 cm above 300–400 m in areas including Aberdeenshire, Angus and Perthshire.
- UK flood risk remains elevated after prolonged rain, with dozens of warnings and further rain in the near term before colder conditions bring a risk of wintry showers later in the week.
- In Southern California, the National Weather Service forecasts showers with a slight chance of thunderstorms and strong southerly gusts to 45–55 mph, with heavier rain possible for Wednesday’s morning commute and local totals around a quarter to a half inch or more; localized UK snow totals may vary widely, with some private forecasts flagging heavier pockets in Scotland but with uncertain placement.