Strong and gusty thunderstorms will roar through portions of the eastern Great Lakes, Northeast, Dakotas and Minnesota today into tonight.
Gusty Thunderstorms for the Northeast
After a week full of unsettled weather, another round of showers and thunderstorms will cross through parts of New York, Pennsylvania and New Jersey today.
These storms will fire and ride along a nearly stationary cold front which will be draped across the region. As warm air surges northward towards the front, showers and thunderstorms will develop.
While a widespread severe weather outbreak is unlikely, a few of the thunderstorms will be strong to perhaps severe producing gusty winds and hail from Lake Ontario to the New York City area and southwestern New England.
Cities which may be impacted by these storms today include Buffalo, Syracuse, Scranton and Allentown.
Those planning on attending the Belmont Stakes outside of New York City this afternoon and evening in Elmont, N.Y., will lie in the path of these storms.
The threat for severe weather is expected to end across these areas shortly after sunset.
Strong Storms to Rattle the Northern Plains
Just a couple of days after severe storms rocked portions of the northern Plains, another potent storm system sliding out of the Rockies into the northern Plains and Canadian Prairies will bring more strong storms to the region.
Unlike the Northeast, the majority of the day will remain dry across the Dakotas and northern Minnesota.
Most of the activity will not begin to fire until late in the afternoon and evening as hot and humid air surges northward ahead of a cold front sliding into the western Dakotas. After the storms fire, they will continue to track eastward throughout the course of the night.
These storms will have the potential of producing damaging winds capable of causing damage to trees, power lines and homes. These storms will also produce large hail which could damage crops across the region. It is not out of the realm of possibilities that the strongest storms could spawn a tornado.
Cities which will be at risk late this afternoon and evening include Bismarck, Fargo and Grand Forks. Towns and communities in northwestern Minnesota and the eastern and central Dakotas will have to contend with these storms through the night.
On Sunday, the focus of these strong thunderstorms will shift to the east into the Midwest affecting Minnesota, Iowa, Wisconsin and parts of eastern Nebraska and northeastern Kansas. Damaging winds and hail will once again be the primary threat on Sunday.
Dry and sunny conditions will continue in San Francisco for the the official start to winter and the Christmas holiday.
Sunshine will return in full force for the weekend, the official start to winter, and Christmas in Los Angeles.
Big changes are on the way for parts of the Western and Central states late this week and into this weekend.
Similar to the days prior to Thanksgiving, the worst weather will focus on the days prior to Christmas as millions of travelers take to the roads and skies in the U.S. and southern Canada.
Warm air is forecast to surge into much of the eastern half of the nation by the weekend and will be accompanied by heavy rain and flooding risk in some locations.
Thunderstorms in parts of the South this weekend may become strong enough to threaten lives and property.
Arctic blast causes temperatures to plunge to 20 to 30 below zero.
Lancaster, CA (1984)
Ended up with about a foot of snow. One spot in Kern County (North of LA) had 19" of snow.
West Palm Beach, FL (1989)
Record high of 88 degrees.