Rounds of snow and flurries are forecast for central and western Pennsylvania through next week.
The snowy episodes are being caused by storms originating from Western Canada and are known as Alberta Clippers.
Most storms will struggle to bring a flurry. However, a small number of the storms can bring accumulating snow.
On such storm will swing through later Friday night into Saturday morning with a quick 1 to 3 inches of snow. Locally higher amounts are possible in the mountains.
Because some of the snow can be briefly heavy and will fall during the evening and early morning hours, when temperatures are at their lowest point, there can be slippery travel. The snow will tend to melt off during the midday and afternoon hours.
Another weak storm can bring a couple of snow showers Sunday into Monday.
The pattern will also favor bouts of brisk winds.
After moderate cold through Monday, more substantial cold follows later next week.
Later in the month, frigid air that pushes southward over the Midwest will turn eastward and could alter the weak storm pattern to one that favors more potent storms and heavier snow.
Hurricane Ignacio may enhance showers and stir rough surf for the Hawaiian Islands as it approaches next week.
After Erika brings heavy rain and locally gusty winds from Hispaniola eastern Cuba into Friday night, the system will move toward the Bahamas, the Keys and South Florida this weekend.
As many as seven tropical cyclones were churning throughout the world this past week, while smoke from wildfires across the Pacific Northwest led to poor air quality across the region.
Heat and humidity will return to Harrisburg this weekend and hang on into next week.
Heat will linger in Eastern Europe for much of the fall season; meanwhile, the British Isles and northwestern Europe can expect a stormy end to the season.
As Hurricane Katrina barreled towards the Gulf Coast, peaking at Category 5 strength while feasting on the warm waters of the Gulf of Mexico, meteorologists around the country prepared to deliver one of the most crucial and life-saving forecasts in history.
New England (1965)
A total of 2.5 inches of snow on top of Mt. Washington set an August record. Vermont had a reading of only 25 degrees, while Nantucket had a chilly 39 degrees. Earliest freeze on record at many stations.
Houston, TX (1980)
2.23 inches of rain fell in less than 1 hour. Streets were flooded in the downtown district and a tornado touched down briefly west of Houston at Sealy, TX.
Pittsburgh, PA (1982)
39 degrees, coldest ever in August.