East Coast Cool Down on the Way
After a hot and humid start to June across the East Coast, significantly cooler temperatures will move into the region in time for the weekend – but not before another round of powerful thunderstorms later this week.
Strong storms moved through New England and the mid-Atlantic on Tuesday afternoon, knocking out power to tens of thousands in Pennsylvania, New Jersey, New York and Connecticut as a potent cold front swept through the region. That initial front will help bring some cooler temperatures by Wednesday and Thursday, but a secondary system will set the region up for cooler conditions through the weekend.
The primary reason for the cooler weather will be the jet stream – a fast current of winds at the upper levels of the atmosphere – moving overhead. That will usher in cloudier conditions, meaning highs in New York City, Boston and even Philadelphia and Baltimore may not make their way out of the 60s or low 70s through Sunday. Cloudy weather with showers, as opposed to Tuesday’s stronger storms, will become more widespread for the weekend, although a chance for severe weather will be in play for Washington DC and Baltimore on Thursday before the cooler, more spring-like air mass moves in by Friday and lasts through the weekend.
New York City has already reached 85° or above eight days so far in June (average June 23rd high: 81°), and Washington DC has really baked in June, with 11 days at 90° or above (average overall June high temperature: 84°) – fresh off of the city’s warmest May on record.
For the heat-laden southeast, where temperatures soared to 100° again in Charlotte, North Carolina on Tuesday, a more gradual cool down arrives by the weekend as well, with highs dipping into the 80s in both Birmingham, Alabama and Atlanta, Georgia by Saturday. However, those temperatures are closer to seasonal averages for this time of year rather than dipping below average, as is the expectation for the Northeast urban corridor.
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Meteorologist Chris Bianchi