A break from the cold, snowy weather is in store for much of the balance of this week around Pittsburgh but problems are possible.
Temperatures are forecast to reach the 50s on Thursday.
Due to the extensive snow cover and the cold ground, the pattern will pose some problems.
Temperatures will dip to or below freezing in some communities through midweek. Motorists and pedestrians should be on the lookout for areas of black ice, especially since ice-melting chemicals are becoming scarce.
Along with the mild weather and cold ground will come areas of fog. The fog could be dense enough at times in parts of the Midwest, South and East to cause flight delays.
A potent storm moving through Thursday into Friday will boost the chance of fog and raise the likelihood of rain. That storm will bring the potential for a severe thunderstorm with damaging wind gusts. Winds can become strong enough with the storm system Thursday night to cause sporadic power outages.
Enough melting will occur this week to bring the risk of street and highway flooding. At this time, major river flooding is not expected.
Cold weather will return in stages this weekend into next week.
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As a strengthening storm system converges on the Atlantic coast, pockets of severe weather will develop in the eastern part of the United States into Friday evening.
A rare storm for late July will deliver drenching rain and miserable conditions to a large part of the mid-Atlantic and southern coast of New England to end the week and start the weekend.
Firefighters were gaining control of the massive wildfires raging across southeastern France on Thursday, but warned that the fire danger remains high.
Even though Hurricane Hilary remains well away from the southwestern United States, the storm could still bring hazards to swimmers and surfers in the final days of July.
Summer warmth vanished from the United Kingdom since the middle of the month and is not expected to return anytime soon.
While the north-central United States will get a break from storms in some locations and heat in others late this weekend, the pattern will resume as July ends and August begins.