Maryland Weather: Frost advisories up for Central Maryland tonight - Sun reporter Frank Roylance blogs on meteorology

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October 19, 2009

Frost advisories up for Central Maryland tonight

Frost advisories in blue If last night's frost didn't kill them, you'd best cover or bring those tender plants indoors tonight.

The National Weather Service has just posted frost advisories (blue area on the map) for all of Central Maryland between 2 a.m. and 9 a.m. Tuesday morning.

With clear skies ahead, temperatures are expected to drop deep into the 30s tonight, cold enough for frost that will kill vulnerable and exposed plants.

The record low for an Oct. 20 at BWI is 28 degrees, reached most recently in 1992.

We're still about nine days ahead of the average first-frost date for Baltimore. The forecast low tonight for the city is 40 degrees, but we don't need to reach an air temperature of 32 degrees to form frost on some exposed surfaces.

Posted by Frank Roylance at 3:08 PM | Permalink | Comments (0)
Categories: Watches and warnings

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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.

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