Heavy, gusty thunderstorms will affect parts of northern New England and neighboring Canada into Monday evening.
The storms bring a risk of flash and urban flooding, hail and damaging wind gusts in localized areas.
Some towns and cities in portions of Vermont, New Hampshire, central and northern Maine to southeastern Quebec and New Brunswick can be hit by the storms. Some cities that can be hit by the strong storms include, Montpelier, Vt., Berlin, N.H., Caribou, Maine, and Quebec City, Quebec.
A few communities can be hit with power outages and travel delays.
The main threat area will be north of the heavily populated areas from Hartford, Conn., to Boston. However, a couple of locally drenching thunderstorms can also affect these areas.
The storms are firing on the leading edge of another push of cooler and less humid air pushing eastward from the Great Lakes.
In the wake of the front, nighttime lows will be in the 50s in the major cities, but in the 40s in many rural areas.