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.
A couple of gusty, drenching storms will reach as far south as Massachusetts from near Worcester to Boston.
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.
This weekend will feel more like September around Boston, but the return of summer warmth is on the horizon for next week.
As temperatures rise through the weekend in the South, so will the risk for heat-related dangers.
While a tropical low is expected to brew into Tropical Storm Cristobal this weekend, the East Coast of the U.S. is being monitored for future impacts -- even if the storm remains well offshore.
United States residents may pay higher heating costs this fall as colder air is expected to grip the Rockies and Plains at times and some quick-hitting chilly shots may impact the Northeast.
A swath of soaking rain will slowly shift from the northern Plains to the Canadian Prairies this weekend, making people reach for their umbrellas and heightening concerns for flooding.
Hurricane season is reaching its historical peak; are you prepared?
San Lorenzo, Puerto Rico (1906)
103 degrees, hottest ever in Puerto Rico.
East-Central Kentucky (1980)
2-1/2 to 3 inches of rain in 45 minutes. 75 homes were flooded and one was washed off its foundation, ending up blocking a roadway in the community of Beauty (near the WV-KY line). Heavy damage was reported, there including a washed-out bridge.
Wichita Falls, TX (1980)
108 degrees -- new record high for this date, also the 56th day of the last 59 days that they have reached 100 degrees or more.