Warm weather is in store for the Pittsburgh area through Labor Day, but there will also be a few rounds of thunderstorms that may cause some disruptions.
Downpours early Wednesday morning caused widespread flash flooding in Bridgeport, W.Va., where 2.83 inches of rain fell in a little over three hours. Basement flooding occurred in Jenners, Pa.
The periodic storms will help to keep the worst of a large heat wave at bay over the Central States, where temperatures will surge to near 100 each day through the holiday weekend.
Around western Pennsylvania, eastern Ohio and northern West Virginia, despite the risk of spotty strong storms, the weather pattern should be great most of the time for late-summer activities such as swimming, amusement parks, evening ball games and camping. However, it may be a tad warm for folks without air conditioning during the afternoon hours.
Temperatures will be in contrast to much of the first three weeks of August, when readings averaged between 2 and 3 degrees below normal. Temperatures will average 3 to 5 degrees above normal over the next week or so. Normal temperatures for the last week of August range from a low of 60 to a high of 80.
High temperatures most days through the last unofficial weekend of summer will be in the middle 80s. Nighttime lows will generally be in the middle 60s.
Humidity levels will be typical of late August.
There can be a couple of days where downpours are persistent enough to cause minor flash and urban flooding problems, as well as travel delays at the airport and along the Turnpike, 22 and 28. A few communities can also be hit with strong, gusty winds that cause sporadic power outages.
After the showers and thunderstorms Wednesday, another episode or two is likely to affect the area at some point over the Labor Day weekend.
An unusually strong push of cool air for early September will move southward along the Atlantic Seaboard into the Labor Day weekend, before July-like heat returns by next week.
While lulls in tropical activity in the Atlantic will continue, a rapid end to the hurricane season in September does not always occur during an El Nino.
After heat has dominated headlines this summer, cool air has finally taken control of the northern half of Europe with no signs of departing anytime soon.
While Tropical Storm Kevin will stay well away from Mexico, its moisture will still lead to an increase in showers and thunderstorms from Baja California to the Four Corners region of the United States.
A stormy weather pattern will prevail through September across much of southern South America.
Steering winds could take Ignacio, as a remnant storm, into the southeastern arm of Alaska or British Columbia during the middle days of next week.
Denver, CO (1961)
Earliest snow on record; a total of 4.2 inches. A great storm raged at high elevations with 2-3 feet of snow closing roads on Labor Day weekend.
Coffeyville, KS (1970)
Hailstone 17.5/44 cm in circumference 1.671 lb/757 gm.
Long Island NY (1821)
Long Island hurricane of 1821 struck western Long Island. The storm affected a densely populated area where weather observers were common.