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October 22, 2004

Blame dammed air for dreary weather

Drive west across the mountains and you'll find sunshine. Drive to northern New Jersey or the Outer Banks of N.C. and there's sunshine, forecasters say. But from PA to VA and here in Mobtown it's day after day of thick clouds, dark and dreary drizzle. Brian Guyer, a National Weather Service forecaster at Sterling, says the clockwise circulation around high pressure in southeastern Canada is blowing winds off the Atlantic and into our region. The damp air runs upslope into the Appalachians, cooling, forming a dense overcast on the eastern side of the mountains that condenses into fog and drizzle. Until the winds shift, it's stuck there. Meteorologists call it "damming."

"What we need is some front to come blowing through and sweep away the moisture and clear the atmosphere," he said. There is a cold front on the way, but the air behind it is neither dry nor clear. It will bring more rain Saturday night into Sunday, followed by "mostly cloudy" weather the balance of the weekend. It says "partly cloudy" for the start of next week. But that, Guyer says, may be wishful thinking. Dammed indeed.

Posted by Admin at 9:19 AM | | Comments (0)
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About Frank Roylance
Frank Roylance is a reporter for The Baltimore Sun. He came to Baltimore from New Bedford, Mass. in 1980 to join the old Evening Sun. He moved to the morning Sun when the papers merged in 1992, and has spent most of his time since covering science, including astronomy and the weather. One of The Baltimore Sun's first online Web logs, the Weather Blog debuted in October 2004. In June 2006 Frank also began writing comments on local weather and stargazing for The Baltimore Sun's print Weather Page. Frank also answers readers’ weather queries for the newspaper and the blog. Frank Roylance retired in October 2011. Maryland Weather is now being updated by members of The Baltimore Sun staff
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