Colder air will blast into Pittsburgh this weekend with a chance of accumulating snow.
Prior to the arrival of the arctic air, temperatures will reach the 50s Friday.
A moist flow from the Gulf of Mexico will bring clouds with the warmup, and may bring spotty rain to the area Thursday night and Friday.
The first push of cold air will arrive on Saturday with gusty winds and a period or two of snow.
Temperatures will likely hold in the 30s Saturday and could actually fall during the day. Motorists should be on the lookout for slippery spots developing, especially in the higher elevations east of the city.
A second push of cold air from the Arctic will arrive Saturday night and will be accompanied by gusty winds lasting into Sunday. Gusts can top 40 mph. RealFeel® temperatures will plunge into the teens and even the single digits at times.
Any untreated surfaces made initially made wet by the snow will freeze.
It is this second blast that will set up locally heavy lake-effect snow in parts of eastern Ohio and western Pennsylvania to northern West Virginia. Several inches of snow could fall where the bands of snow persist.
Temperatures will stay below freezing (32 degrees Fahrenheit) throughout the day Sunday.
Winds and temperatures will ease up early next week.
Joaquin continues its journey across the northern Atlantic toward Europe, where it is expected to impact Spain and Portugal this weekend.
Winter will kick off with mild weather in the Northeast and mid-Atlantic as an intensifying El Nino influences the weather pattern across the country.
A fall-like weekend is in store for the Northeast, after rain and thunderstorms will dampen the region on Friday.
Another round of rain is expected to move through the Carolinas on Saturday, which may lead to rises on some small streams and creeks.
Oho will hit parts of British Columbia and Alaska with drenching rain, gusty winds and pounding seas before the week comes to an end.
“It was by far the most intimidating natural disaster I have ever chased,” Storm Chaser and Extreme Meteorologist Reed Timmer said of the historic flooding in South Carolina.
Black Hills, SD (1982)
3-6 feet of wet snow fell. Lead, S.D. had 36 inches. Rapid City had only a trace of snow.
Cheyenne, WY (1990)
All-time October snowfall for 24 hours - a total of 7.9 inches fell. The total for the entire storm was 9 inches.
Fort Wayne, IN (1992)
Straight - line thunderstorm winds of 125 mph destroyed 5 homes and damaged 99.