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June has arrived, bringing summer-like weather

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After a cool and unsettled start to June, a significant warmup is expected to sweep across the eastern United States this weekend, bringing the first widespread taste of summer to South Central Pennsylvania and much of the Mid-Atlantic.

Forecasters say a large dome of warm air will expand across the region through Saturday, sending temperatures well into the 80s and low 90s from Pennsylvania to New England. Around 150 million Americans are expected to experience temperatures in the 90s or even 100s through early next week.

In South Central Pennsylvania, including Adams, York, Cumberland and Franklin counties, highs are expected to climb into the upper 80s and lower 90s by Friday and Saturday, marking a sharp contrast from the cooler conditions that prevailed earlier this week.

The warmup follows an unusually cool start to meteorological summer. Temperatures struggled to reach seasonal levels across much of the Northeast during the opening days of June, but a strengthening ridge of high pressure is now allowing significantly warmer air to spread northward.

The hottest conditions are expected from Washington, D.C., through Baltimore and into parts of New York, where some daily temperature records could be challenged. Forecasters expect temperatures in the nation’s capital to reach the lower to mid-90s on both Friday and Saturday.

Relief may arrive by the end of the weekend as a cold front moves eastward. The front is expected to trigger showers and thunderstorms across the Northeast on Saturday before pushing into the Mid-Atlantic on Sunday. The system should bring slightly cooler temperatures to Pennsylvania and much of the East Coast early next week.

However, meteorologists caution that the cooldown may be brief.

Long-range forecasts suggest another, potentially stronger surge of heat and humidity could develop across the central and eastern United States by the middle of June. Some forecasting models indicate a developing heat dome could bring another round of unusually warm temperatures to the region.

The upcoming warmth is part of a broader pattern affecting much of the country. Forecasters expect repeated waves of above-normal temperatures through mid-June as the storm track shifts northward and warmer air spreads across the nation.

Source: Weather Channel

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