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August 18, 2011

Rain risk continues through Monday

With warm, humid winds continuing to flow out of the south and southeast, Central Maryland is expected to remain in a period of persistent rain threats through Monday, as a series of Rain chances Fridaydisturbances set off scattered showers and storms. The best chances are focused on the period from tonight through Friday.

The National Weather Service regional forecast office in Sterling, Va. says Thursday will be the hottest day of the period, with forecast highs near 90. Rain chances are put at 40 percent today, rising to 50 percent tonight and 60 percent on Friday (map).  As much as a quarter inch is possible Friday, with more in thunderstorms.

So we can look forward to periods of sunshine, followed by showers and storms, most likely in the afternoon and evening. Some may produce localized heavy rain and flash flooding. Daytime highs will be in the upper 80s at BWI-Marshall Airport.

The next cold front, arriving late Sunday into Monday, should clear the air and deliver a couple of days of sunny skies and seasonable temperatures.

In the meantime, Central Maryland is under a Code Orange Air Quality Alert through Thursday. So breathe as little as possible if you go outdoors. 

Recent rains have sharply reduced the percentage of Maryland experiencing "Moderate" drought conditions, from 84 percent to just under 18 percent, according to the new Drought Monitor Map released this morning. But the portion still rated as "Abnormally dry," which includes the Baltimore metro area, was put at 91 percent, down only slightly from last week's 95 percent. 

Posted by Frank Roylance at 10:40 AM | | Comments (0)
Categories: Forecasts

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About Frank Roylance
This site is the Maryland Weather archive. The current Maryland Weather blog can be found here.
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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