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October 23, 2009

Rain arrives late Friday, departs quickly Sat.


The feature that dominate the weather map today is that big low-pressure system moving out of Missouri and headed north and east into the Great Lakes and Quebec on Saturday.

For now, we're getting into an easterly wind off the ocean, driven by the clockwise flow around a high moving over New England. That means increasing cloud cover, maybe a little rain late this afternoon and evening, and temperatures that won't move much from the mid-60s, where they are now.

But as the Midwestern low moves along, it will drag a cold front across the region on Saturday, and draw more moisture in off the ocean to the southeast. And that's what will produce most of the rain that's headed our way on Saturday. There may even be some thunder. By the time it's all AccuWeather.comover, we could have a half-inch, to as much as an inch of rain from all this.

Here's's take on the rain.

The good news in the morning discussion out of Sterling seems to be that the rain associated with the frontal passage will be relatively brief. We won;t be stuck with it for days on end like we were last week.

Skies should dry out quickly, with sunny skies in the wings for Sunday. If you're eager to get out in the woods or onto the bike trails to enjoy the fall colors, plan it for Sunday - or Monday if you've got the day off.

Posted by Frank Roylance at 10:28 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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