There is the potential for a severe weather outbreak spanning through Sunday across the northern tier of the United States and neighboring Canada.
The outbreak includes the risk of strong straight-line winds, large hail and a few tornadoes.
An unusually potent disturbance for early August will swing from northwest to southeast across the northern Plains and adjacent Prairies in southern Canada during the latter part of this week to the Great Lakes, St. Lawrence Valley and central Appalachians spanning this weekend.
This feature is likely to produce both complexes of thunderstorms with high winds, hail and flash flooding on a regional level, as well as isolated intense thunderstorms capable of bringing a tornado to a few communities.
The feature, which resembles a storm system from the springtime, was rolling eastward into Saskatchewan early Friday morning.
Power outages, property damage and frequent lightning strikes can occur with some of the storms.
The risk area today be found in the eastern Dakotas, western and central Minnesota, southeastern Manitoba and part of northwestern Ontario.
The area from central Iowa to eastern Wisconsin, including Des Moines, Minneapolis and Madison, Wis., could be in the crosshairs of the nasty storms during Saturday.
Ominous storms could be in the vicinity of Chicago Saturday evening.
There is the potential for more of a squall line setup later this weekend around the central and eastern Great Lakes and Ohio Valley and into the central Appalachians.
Approximate timing for the severe storms from Indianapolis to Detroit, Toronto and Ottawa would be Saturday evening into early Sunday.
During Sunday, the storms would affect areas from Nashville to Cincinnati, Pittsburgh, Buffalo, Scranton, Albany and Montreal.
During Sunday evening into Monday, the storms would advance across the Appalachians into the I-95 zone, after a weekend of heat, humidity and spotty drenching storms.
People in the path of this potentially damaging and life-threatening storm system should keep up to date on the latest weather information.
Spotty and locally strong thunderstorms will fire ahead of this event in portions of the Plains, Midwest and the East.
Travel hazards, delays and disruptions associated with rain, ice and snow will continue over the Central states through the balance of the Thanksgiving weekend.
Following a mild Thanksgiving and Black Friday, noticeably cooler air will return to the Northeast this weekend.
Sandra remains on track to make landfall in northern Mexico on Saturday, but it will be much weaker than its current major hurricane status.
The current reprieve from heavy rain across southern India will not last long with the threat for flooding downpours set to return for the final days of November.
Several days of heavy rain will bring the potential to cause flooding from the southern Plains to the middle Mississippi Valley into early next week.
Compared to Thanksgiving Day in 2014, this Thanksgiving will be substantially warmer in the Northeast.
Thanksgiving Weekend blizzard begins. A total of 21.5 inches of snow in Denver (26th-27th). Zero visibility at Limen, Co, for 24 consecutive hours.
New England (1888)
Hurricane passed inside Nantucket over Cape Cod. Later crossed Nova Scotia Block Island- 84 mph wind gust.
North Dakota (1896)
Thanksgiving Day Blizzard. "Wind Velocity and snowfall never equalled before."